Multi-step guide winding drum and crane

Abstract

The utility model relates to a multi-step guide winding drum and a crane. The multi-step guide winding drum comprises a drum body of the winding drum, a left baffle and a right baffle, a plurality of layers of guide bosses are arranged on the inner sides of the left baffle and the right baffle corresponding to the straight rope groove areas, each layer of guide boss and the lower-layer steel wire rope jointly support the upper-layer steel wire rope, gaps between the steel wire ropes and the baffles are filled, and the upper-layer steel wire rope is prevented from falling into the lower-layer steel wire rope; reversing strips are symmetrically arranged on the outer edges of the inner sides of the left baffle and the right baffle corresponding to the inclined rope grooves and guide the steel wire ropes to reverse when passing through the inclined rope groove areas, so that the steel wire ropes on the upper layer are arranged in the rope grooves formed by the steel wire ropes on the lower layer. The winding drum can effectively solve the problem of rope disorder of the winding drum with the double-folding-line rope grooves, and the rope disorder phenomenon is avoided.

Description

Technical Field

[0001] This utility model relates to a multi-stage guide drum and crane, belonging to the technical field of wire rope drum devices. Background Technology

[0002] Currently, the most commonly used wire rope drums in lifting machinery are double-groove drums. For double-groove drums, the grooves are divided into two oblique groove areas and two straight groove areas around the drum. When the wire rope is wound on the drum, the first layer of wire rope is arranged along the drum's grooves, and the second layer is arranged according to the grooves formed by the first layer. That is, the upper layer of wire rope is pressed between the adjacent turns of the lower layer of wire rope to form a stable position. When the wire rope is wound to the end plates and reversed direction, the change of direction through the oblique grooves creates a gap between the outermost wire rope and the plate. This means that each layer of wire rope will have a gap between itself and the drum plate in the straight groove area, which poses a risk of the upper layer of wire rope getting trapped under the lower layer.

[0003] Chinese patent application CN116040515A discloses a drum device for improving rope routing and preventing rope tangling, which sets a herringbone-shaped inclined plate at the corresponding left and right baffles in the inclined rope groove area to prevent rope tangling at that location. However, this technical solution cannot eliminate the rope block gaps corresponding to the straight rope groove area, which can still lead to rope tangling phenomena such as rope trapping.

[0004] Chinese patent CN211813166U discloses a wire rope drum and lifting machinery, which sets guide bosses corresponding to the number of wire rope layers at the left and right baffles in the inclined rope groove area. The bosses are in the shape of sequentially connected inclined section one, parallel section, and inclined section two to avoid rope tangling in the inclined rope groove area. However, since the rope block gaps in the corresponding straight rope groove area cannot be eliminated, rope tangling phenomena such as rope trapping can still occur.

[0005] Chinese patent CN106348192B discloses an automatic wire rope winding drum with wavy protrusions on the inner side of the baffle. The protrusions are arranged in the entire circumference. When changing direction in the inclined rope groove area, the wire rope will interfere with the protrusions. Moreover, there is no changing direction guide mechanism in the inclined rope groove area, which poses a risk of not changing direction according to the rope groove.

[0006] Therefore, there is an urgent need for a multi-stage guide drum that can effectively solve the problem of rope tangling in double-folded groove drums. Summary of the Invention

[0007] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a multi-stage guide drum and crane that can effectively solve the problem of rope tangling in double-folded rope groove drums, thus avoiding rope tangling.

[0008] The purpose of this utility model is achieved as follows:

[0009] A multi-stage guide drum includes a drum body, a left baffle and a right baffle respectively disposed at the left and right ends of the drum body, and a drum body rope groove including an inclined rope groove and a straight rope groove is provided on the outer circle of the drum body.

[0010] Several layers of guide bosses are set on the inner side of the left and right baffles corresponding to the straight rope groove area. Each layer of guide bosses and the lower layer of wire rope jointly support the upper layer of wire rope, fill the gap between the wire rope and the baffle, and prevent the upper layer of wire rope from sinking into the lower layer of wire rope.

[0011] Reversing bars are symmetrically arranged on the inner outer edges of the left and right baffles, corresponding to the positions of the inclined rope grooves. The reversing bars guide the wire rope to reverse direction when passing through the inclined rope groove area, so that the upper wire rope is arranged in the rope groove formed by the lower wire rope.

[0012] Furthermore, the number of guide bosses corresponds one-to-one with the number of wire rope layers, with each layer of wire rope corresponding to one guide boss; each guide boss and the lower layer of wire rope jointly support the upper layer of wire rope, fill the gap between the wire rope and the baffle, and prevent the upper layer of wire rope from sinking into the lower layer of wire rope.

[0013] Furthermore, the rope groove on the side of the cylinder serves as the first layer of bosses, and a second layer of bosses is provided in the contact area with the root of the left and right baffles.

[0014] Furthermore, guide bosses A and B are symmetrically arranged at the midpoints of the two straight rope groove areas on the inner side of the left baffle, respectively; guide bosses C and D are symmetrically arranged at the midpoints of the straight rope groove areas on the inner side of the right baffle. Guide bosses A and D correspond to odd-numbered layers of wire rope, while guide bosses B and C correspond to even-numbered layers of wire rope; the odd-numbered and even-numbered layer bosses are arranged alternately, corresponding to the winding state of the wire rope.

[0015] Furthermore, guide boss A and guide boss C correspond to the same straight rope groove area, and guide boss B and guide boss D correspond to another straight rope groove area.

[0016] Furthermore, the guide bosses of each layer are arranged in concentric arcs from the inside to the outside in the radial direction, and the curvature of the concentric arcs is smaller than the angle of the straight rope groove area.

[0017] Furthermore, the starting point of the reversing bar corresponds to the middle position of the inclined rope groove area, and the ending point corresponds to the straight rope groove area.

[0018] Furthermore, both ends of the reversing bar are provided with reversing ramps to guide the wire ropes to reverse in the direction of the reversing ramps, so that the upper wire ropes are arranged in the rope groove formed by the lower wire ropes.

[0019] A crane equipped with any of the aforementioned multi-stage guide drums.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This utility model relates to a multi-stage guide drum and crane. Guide bosses are installed at corresponding positions in the straight rope groove area of ​​the drum to fill the gap between the wire rope and the baffle, preventing the upper wire rope from sinking into the lower wire rope in the straight rope groove area. Reversing bars are symmetrically installed along the inner outer edges of the left and right baffles at positions corresponding to the inclined rope groove areas. Reversing ramps are installed at both ends of the reversing bars to guide the wire rope to reverse direction according to the reversing ramps, ensuring that the upper wire rope is arranged within the rope groove formed by the lower wire rope, preventing the upper wire rope from sinking into the lower wire rope in the inclined rope groove area. Cranes equipped with this multi-stage guide drum can effectively avoid rope tangling problems. Attached Figure Description

[0022] Figure 1 This is a front cross-sectional view of a multi-stage guide drum according to the present invention.

[0023] Figure 2 This is a plan view of the rope groove of a multi-stage guide drum according to this utility model.

[0024] Figure 3 This is a schematic diagram of the left baffle structure of a multi-stage guide drum according to this utility model.

[0025] Figure 4 This is a schematic diagram of the right baffle structure of a multi-stage guide drum according to this utility model.

[0026] Figure 5 This is a schematic diagram of an odd-numbered layer boss structure for a multi-stage guide drum according to this utility model.

[0027] Figure 6 This is a schematic diagram of an even-numbered layer boss structure for a multi-stage guide drum according to this utility model.

[0028] Figure 7 This is a schematic diagram of the reversing bar structure of a multi-stage guide drum according to this utility model.

[0029] Figure 8 This is a schematic diagram of the planar structure of the guide boss and reversing bar of a multi-stage guide drum according to this utility model.

[0030] in:

[0031] Guide boss A1, guide boss B2, guide boss C3, guide boss D4, left baffle 5, right baffle 6, cylinder 7, cylinder rope groove 8, reversing bar 9;

[0032] First guide boss A11, second guide boss A12, third guide boss A13, first guide boss B21, second guide boss B22, third guide boss B23, first layer boss 71, second layer boss 72, reversing ramp 91. Detailed Implementation Example

[0033] See Figures 1-8 The present invention relates to a multi-stage guide drum, comprising a drum body 7, a left baffle 5 and a right baffle 6 respectively disposed at the left and right ends of the drum body 7, and a drum rope groove 8 comprising an inclined rope groove and a straight rope groove on the outer circle of the drum body 7.

[0034] This utility model's multi-stage guide drum is a double-folded grooved drum. The drum body groove 8 is divided into two oblique groove areas and two straight groove areas around the circumference of the drum, with the oblique and straight grooves alternating. An oblique groove refers to a groove that is oblique to the drum's main axis, while a straight groove refers to a groove that is perpendicular to the drum's main axis or parallel to the flange. The axial displacement of the two oblique grooves forms a groove spacing. In this embodiment, the double-folded grooved drum can wind eight layers of wound steel wire rope. The drum body groove 8 located at the edge of the drum body 7 serves as the first-layer boss 71, and a second-layer boss 72 is provided in the contact area with the roots of the left baffle 5 and right baffle 6. The reinforced weld structure can be used as the second-layer boss 72. (See [reference]). Figure 1 ;

[0035] On the inner sides of the left baffle 5 and right baffle 6, corresponding to the straight rope groove area, several layers of guide protrusions are provided. Each layer of guide protrusions, together with the lower layer of wire rope, supports the upper layer of wire rope, filling the gap between the wire rope and the baffle, and preventing the upper layer of wire rope from sinking into the lower layer of wire rope. The number of layers of guide protrusions corresponds one-to-one with the number of layers of wire rope, with one layer of guide protrusion for each layer of wire rope. Each layer of guide protrusions, together with the lower layer of wire rope, supports the upper layer of wire rope, filling the gap between the wire rope and the baffle, and preventing the upper layer of wire rope from sinking into the lower layer of wire rope. The guide protrusions are arranged in concentric arcs from the inside to the outside in the radial direction, see [reference]. Figure 5 , Figure 6 and Figure 8 Furthermore, the radius of the concentric circular arc is less than the angle of the straight rope groove region, see [reference]. Figure 8 The angle of the concentric circular arcs lies within the straight rope groove area;

[0036] Specifically, guide bosses A1 and B2 are symmetrically arranged on the inner side of the left baffle 5 at the midpoints of the two straight rope groove areas, respectively. (See [reference]) Figure 5 The guide boss A1 includes a first guide boss A11, a second guide boss A12, and a third guide boss A13; see also Figure 6The guide boss B2 includes a first guide boss B21, a second guide boss B22, and a third guide boss B23; guide bosses C3 and D4 are symmetrically arranged in the middle of the straight rope groove area corresponding to the inner side of the right baffle 6. Guide bosses A1 and D4 are corresponding to odd-numbered layers of wire rope, while guide bosses B2 and C3 are corresponding to even-numbered layers of wire rope; the odd-numbered and even-numbered layer bosses are arranged alternately, corresponding to the winding state of the wire rope, that is: the first layer boss 71, guide boss A1, and guide boss D4 are all corresponding to odd-numbered layers of wire rope and are arranged in the same location area; the second layer boss 72, guide boss B2, and guide boss C3 are all corresponding to even-numbered layers of wire rope and are arranged in another same location area, see [reference]. Figure 1 The guide boss A1 and guide boss C3 correspond to the same straight rope groove area, and guide boss B2 and guide boss D4 correspond to another straight rope groove area. See [link / reference] Figure 1 and Figure 2 When a layer of wire rope is wound to the outermost side and passes through the straight rope groove area, the guide boss at the corresponding position of the straight rope groove area fills the gap between the wire rope and the baffle, preventing the newly wound wire rope from sinking into the lower layer of wire rope.

[0037] Reversing bars 9 are symmetrically arranged along the inner outer edges of the left baffle 5 and the right baffle 6, corresponding to the positions of the inclined rope grooves. The starting point of the reversing bar 9 corresponds to the middle position of the inclined rope groove area, and the ending point corresponds to the straight rope groove area. See [reference needed]. Figure 3 , Figure 4 and Figure 8 Both ends of the reversing bar 9 are provided with reversing ramps 91, see [link / reference]. Figure 7 The guide wire rope is reversed along the direction of the reversing ramp 91, so that the upper layer of wire rope is arranged in the rope groove formed by the lower layer of wire rope. When a layer of wire rope is wound to the outermost side and passes through the inclined rope groove, the guide wire rope is deflected and reversed by the reversing ramp 91, so that it can smoothly pass through the inclined rope groove area and start winding the upper layer of wire rope, and arrange the upper layer of wire rope in the rope groove formed by the upper layer of wire rope, so as to prevent the newly wound outermost wire rope from falling into the gap between the wire rope and the baffle and causing rope tangling.

[0038] This utility model features a multi-stage guide drum with guide protrusions at corresponding positions in the straight rope groove area to fill the gap between the wire rope and the baffle, preventing the upper wire rope from sinking into the lower wire rope in the straight rope groove area. Reversing bars are symmetrically arranged at corresponding positions in the inclined rope groove area on the inner and outer edges of the left and right baffles, with reversing ramps at both ends to guide the wire rope to reverse direction according to the reversing ramps, ensuring that the upper wire rope is arranged within the rope groove formed by the lower wire rope, thus preventing the upper wire rope from sinking into the lower wire rope in the inclined rope groove area. Example

[0039] This utility model relates to a crane equipped with a multi-stage guide drum as described in the above embodiment. It can prevent rope tangling in both the straight rope groove area and the inclined rope groove area of ​​the drum, effectively solving the rope tangling problem of the double-folded rope groove drum and avoiding the occurrence of rope tangling.

[0040] Additionally, it should be noted that the above-described specific implementation is merely an optimized solution of this patent, and any modifications or improvements made by those skilled in the art based on the above concept are within the scope of protection of this patent.

Claims

1. A multi-order guide reel, comprising a reel body (7), a left baffle (5) and a right baffle (6) respectively arranged at the left and right ends of the reel body (7), and a reel groove (8) comprising an inclined rope groove and a straight rope groove arranged on the outer circle of the reel body (7), characterized in that: a plurality of layers of guide bosses are arranged on the inner side of the left baffle (5) and the right baffle (6) corresponding to the straight rope groove area, each layer of guide boss and the lower layer of steel wire rope jointly support the upper layer of steel wire rope, fill the gap between the steel wire rope and the baffle, and prevent the upper layer of steel wire rope from sinking into the lower layer of steel wire rope; a reversing strip (9) is symmetrically arranged on the inner side of the left baffle (5) and the right baffle (6) corresponding to the position of the inclined rope groove, the reversing strip (9) guides the steel wire rope to reverse when passing through the inclined rope groove area, so that the upper layer of steel wire rope is arranged in the rope groove formed by the lower layer of steel wire rope. The number of layers of the guide boss corresponds to the number of layers of the steel wire rope, and each layer of steel wire rope corresponds to a layer of guide boss; each layer of guide boss and the lower layer of steel wire rope jointly support the upper layer of steel wire rope, fill the gap between the steel wire rope and the baffle, and prevent the upper layer of steel wire rope from sinking into the lower layer of steel wire rope. The reel groove (8) on the edge of the reel body (7) is used as the first layer of boss (71), and the second layer of boss (72) is arranged at the contact area between the left baffle (5) and the right baffle (6) and the root.

2. The multi-stage guide reel of claim 1, wherein: The left baffle (5) is symmetrically provided with a guide boss A (1) and a guide boss B (2) corresponding to the middle positions of the two straight rope groove areas on the inner side; the right baffle (6) is symmetrically provided with a guide boss C (3) and a guide boss D (4) corresponding to the middle positions of the straight rope groove areas on the inner side. The guide boss A (1) and the guide boss D (4) are odd layer steel wire rope corresponding bosses, the guide boss B (2) and the guide boss C (3) are even layer steel wire rope corresponding bosses; the odd layer bosses and the even layer bosses are arranged in cross, corresponding to the winding state of the steel wire rope.

3. The multi-stage guide reel of claim 1, wherein: The guide boss A (1) and the guide boss C (3) correspond to the same rope groove area, and the guide boss B (2) and the guide boss D (4) correspond to another rope groove area.

4. The multi-stage guide reel of claim 1, wherein: Each layer of guide boss is arranged in a concentric circular arc from the inner to the outer in the radial direction, and the radian of the concentric circular arc is smaller than the angle of the straight rope groove area.

5. The multi-stage guide reel of claim 1, wherein: The starting point of the reversing strip (9) corresponds to the middle position of the inclined rope groove area, and the end point corresponds to the inner straight rope groove area.

6. The multi-stage guide reel of claim 1, wherein: The reversing slope (91) is arranged at both ends of the reversing strip (9), which guides the steel wire rope to reverse in the direction of the reversing slope (91), so that the upper layer of steel wire rope is arranged in the rope groove formed by the lower layer of steel wire rope.

7. The multi-stage guide reel of claim 1, wherein: The multi-order guide reel of any one of claims 1 to 8 is installed.

8. The multi-stage guide reel of claim 1, wherein: ​ 9. A crane characterized by: ​

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