CN217650753U - Lifting device capable of being tilted at multiple lifting points - Google Patents

Abstract

The utility model relates to a many hoisting points elevating gear that can tumble relates to the stage equipment field, hoist engine and roof-rack fixed connection, at least one two-degree-of-freedom loose pulley assembly and roof-rack fixed connection and/or with gallows fixed connection, wire rope's one end and hoist engine fixed connection, the other end walk around two-degree-of-freedom loose pulley assembly and with gallows fixed connection, two-degree-of-freedom loose pulley assembly have around X axle and two rotational degrees of freedom of Y axle pivoted. The beneficial effects are that: the lifting and tipping actions of the lifting frame can be realized. When the lifting frame is tilted, the two-freedom-degree pulley assembly has two rotational degrees of freedom and can rotate adaptively, so that the bending moment acting on the installation position of the two-freedom-degree pulley assembly is eliminated, and the multi-lifting-point tilting lifting device is safe and reliable.

Description

Lifting device capable of being tilted at multiple lifting points

Technical Field

The utility model relates to a stage equipment field, concretely relates to many hoisting points can topple over elevating gear.

Background

The hanger for hanging the lamp holder or the prop during stage performance can only vertically lift, and can not realize the movement transformation such as tipping, so that the performance form is single. The existing lifting device capable of tipping (the lifting frame inclines for a certain angle instead of turning over up and down) only utilizes a plurality of steel wire ropes to be fixedly connected with the lifting frame at different positions, and the hoisting machine adopts different speeds to wind and unwind the steel wire ropes so as to tip over. Because of can lead to the hoisting point to receive the moment of flexure because of the position change in the process of tumbling to there is the rupture risk, wire rope uses for a long time also can cause wearing and tearing, has cracked danger.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of how to reduce the moment of flexure that the gallows tumbles the in-process and produces the hoisting point.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a multi-lifting point tilting lifting device comprises a lifting frame, a top frame and at least three groups of lifting components, wherein each lifting component comprises a winch, at least one two-degree-of-freedom pulley assembly and a steel wire rope, the winch is fixedly connected with the top frame,

at least one double-freedom-degree pulley assembly is fixedly connected with the top frame and/or the hanging frame,

one end of the steel wire rope is fixedly connected with the winch, the other end of the steel wire rope bypasses the two-degree-of-freedom pulley assembly and is fixedly connected with the hanging bracket, and the two-degree-of-freedom pulley assembly has two rotational degrees of freedom rotating around an X axis and a Y axis.

The utility model has the advantages that: the hoisting machines of at least three groups of hoisting components synchronously receive and release the steel wire rope, so that the hoisting frame ascends or descends. The hoisting machines of at least three groups of lifting components receive and release the steel wire ropes at different speeds, so that the positions where the corresponding steel wire ropes are connected with the hoisting frame are hoisted or lowered, and the hoisting frame is tilted. When the lifting frame is tilted, the two-freedom-degree pulley assembly has two rotational degrees of freedom and can rotate adaptively, so that the bending moment acting on the installation position of the two-freedom-degree pulley assembly is eliminated, and the multi-lifting-point tilting lifting device is safe and reliable.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, the two-degree-of-freedom pulley assembly comprises a pulley, a pulley frame and a pulley base shaft, wherein the pulley can be installed on the pulley frame in a manner of rotating around a Y axis, the pulley base shaft is horizontally arranged and fixedly connected with the pulley frame, the pulley frame can be installed on the pulley base shaft in a manner of rotating around an X axis, the pulley base shaft is vertical to the axis of the pulley, and the steel wire rope bypasses the pulley.

The beneficial effect of adopting the further scheme is that: the pulley rotates around the axis of the pulley as a first rotational degree of freedom, and the pulley frame rotate around the pulley base shaft as a second rotational degree of freedom, so that when the pulley is subjected to bending moment, the pulley can rotate around the two shafts to eliminate the bending moment.

Furthermore, the lifting component also comprises a steering pulley, the steering pulley is rotatably arranged on the top frame, and the other end of the steel wire rope sequentially bypasses the steering pulley and the two-degree-of-freedom pulley assembly.

The beneficial effect of adopting the above further scheme is: the diverting pulleys are arranged, so that the steel wire rope can be conveniently connected with the winch, and the winch can be arranged at a proper position.

Further, the axis of the diverting pulley is vertical.

Furthermore, the lifting component also comprises a fixed lifting point support, the fixed lifting point support is fixedly connected with the lifting frame, and the other end of the steel wire rope is fixedly connected with the fixed lifting point support.

The beneficial effect of adopting the above further scheme is: the fixed hoisting point support is used for connecting and fixing the end part of the steel wire rope.

Furthermore, the number of the two-degree-of-freedom pulley assemblies is two, one of the two-degree-of-freedom pulley assemblies is fixedly connected with the top frame, and the other one of the two-degree-of-freedom pulley assemblies is fixedly connected with the hanging bracket.

The beneficial effect of adopting the further scheme is that: and bending moment of the turning position of the steel wire rope is reduced on the top frame and the hanging bracket.

Further, the steel wire rope positioned between the two-degree-of-freedom pulley assemblies is vertically arranged.

The beneficial effect of adopting the further scheme is that: the steel wire rope has high strength of bearing tension, reduces the oblique acting force of the steel wire rope, enables the steel wire rope to bear tension as much as possible and ensures the hoisting strength.

Further, at least three sets of lifting members are evenly distributed on the top surface of the hanging bracket, and at least three sets of lifting members are not on the same straight line.

The beneficial effect of adopting the above further scheme is: the acting force of at least three groups of lifting components on the lifting frame is uniform.

Further, the lifting components are three groups, and the three groups of lifting components are uniformly distributed around the gravity center of the hanging bracket along the circumference.

Further, the hanger is a circular or rectangular hanger body.

Drawings

FIG. 1 is a front view of the multi-suspension-point tiltable lifting device of the present invention;

FIG. 2 is a top perspective view of the multiple suspension point tiltable lift of the present invention;

FIG. 3 is a front view of the lifting member of the present invention;

fig. 4 is a top view of the two degree-of-freedom sheave assembly of fig. 3 mounted on a hanger.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a hanger; 2. a lifting member; 3. a winch; 4. a two degree of freedom sheave assembly; 401. a pulley; 402. a pulley yoke; 403. a pulley base shaft; 5. a wire rope; 6. a top frame; 7. a diverting pulley; 8. and fixing the hoisting point support.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1-4, the present embodiment provides a multi-hanging point tiltable lifting device, which comprises a hanger 1, a top frame 6, and at least three sets of lifting members 2, wherein each lifting member 2 comprises a winch 3, at least one two-degree-of-freedom pulley assembly 4, and a steel wire rope 5, the winch 3 is fixedly connected to the top frame 6,

at least one pulley assembly 4 with two degrees of freedom is fixedly connected with the top frame 6 and/or the hanging bracket 1,

one end of the steel wire rope 5 is fixedly connected with the winch 3, the other end of the steel wire rope bypasses the two-degree-of-freedom pulley assembly 4 and is fixedly connected with the hanging bracket 1, and the two-degree-of-freedom pulley assembly 4 has two rotational degrees of freedom rotating around an X axis and a Y axis.

The hoisting machine 3 of at least three groups of hoisting components 2 synchronously receive and release the steel wire rope 5, so that the hoisting frame 1 ascends or descends. The hoisting machines 3 of at least three groups of hoisting parts 2 receive and release the steel wire ropes 5 at different speeds, so as to hoist or lower the positions where the corresponding steel wire ropes 5 are connected with the hoisting frame 1, and realize the tipping of the hoisting frame 1. The multi-hanging-point tilting lifting device integrates two actions of lifting and tilting, and can make the actions of props or lamp holders arranged on the hanging bracket 1 displayed in the air more colorful.

If the traditional fixed hoisting point is adopted, the position of the hoisting point in the horizontal direction is changed along with the change of the inclination angle of the hoisting frame 1 in the tipping process, and the hoisting point can generate compound bending moment, so that potential safety hazards exist; if a traditional single-shaft pulley is adopted, bending moment in one direction still exists. In the embodiment, ten thousand two-degree-of-freedom pulley assemblies 4 are adopted, and the two-degree-of-freedom pulley assemblies 4 release rotational degrees of freedom in two directions, so that bending moment is perfectly eliminated, and potential safety hazards are eliminated. When the hanger 1 is tilted, the two-degree-of-freedom pulley assembly 4 has two rotational degrees of freedom, and the two-degree-of-freedom pulley assembly 4 can rotate adaptively, so that the bending moment acting on the installation position of the two-degree-of-freedom pulley assembly 4 is eliminated, and the multi-hanging-point tilting lifting device is safe and reliable.

Specifically, the two-degree-of-freedom pulley assembly 4 is one and is fixedly connected with the top frame 6 or fixedly connected with the hanging bracket 1; or, the number of the two-degree-of-freedom pulley assemblies 4 is multiple, at least one of the two-degree-of-freedom pulley assemblies is fixedly connected with the top frame 6, at least one of the two-degree-of-freedom pulley assemblies is fixedly connected with the hanger 1, and a path of the other end of the steel wire rope 5 passing around the multiple two-degree-of-freedom pulley assemblies 4 is not limited, for example, the other end of the steel wire rope may sequentially pass around all the two-degree-of-freedom pulley assemblies 4 on the top frame 6 and then sequentially pass around all the two-degree-of-freedom pulley assemblies 4 on the hanger 1, or alternatively pass around the two-degree-of-freedom pulley assemblies 4 on the top frame 6 and the two-degree-of-freedom pulley assemblies 4 on the hanger 1, and form a shape similar to an S shape on a vertical plane of the steel wire rope 5.

The two-degree-of-freedom pulley assembly 4 has two rotational degrees of freedom that rotate around an X axis and a Y axis, as shown in fig. 4, the Y axis represents a pulley axis direction of the two-degree-of-freedom pulley assembly 4, the X axis represents a direction that is horizontal and mutually perpendicular to the Y axis, as shown in fig. 3, and the Z axis is a vertical direction.

On the basis of any scheme, the two-degree-of-freedom pulley assembly 4 comprises a pulley 401, a pulley frame 402 and a pulley base shaft 403, the pulley 401 is rotatably mounted on the pulley frame 402 around a Y axis, the pulley base shaft 403 is horizontally arranged and fixedly connected with the pulley frame 402, the pulley frame 402 is rotatably mounted on the pulley base shaft 403 around an X axis, the pulley base shaft 403 is perpendicular to the axis of the pulley 401, and the steel wire rope 5 is wound around the pulley 401.

The pulley 401 rotates around its axis with a first degree of rotational freedom and the pulley 401 and the pulley holder 402 rotate around the pulley base shaft 403 with a second degree of rotational freedom, whereby the pulley 401, when subjected to a bending moment, can rotate around both shafts to cancel the bending moment. As shown in fig. 4, the Y axis represents the pulley axial direction of the pulley 401, and the X axis represents the axial direction of the pulley base shaft 403, i.e., the direction that is horizontally arranged and perpendicular to the Y axis. The X axis and the Y axis in the drawing are only coordinate systems of the two-degree-of-freedom pulley assemblies 4 themselves, not coordinate systems of the whole multi-suspension-point tiltable lifting device, that is, the directions of the X axis and the Y axis of the multiple two-degree-of-freedom pulley assemblies 4 pointed in the multi-suspension-point tiltable lifting device may be different or the same, and the placing angle of each two-degree-of-freedom pulley assembly 4 around its Z axis is not limited.

Alternatively, the two-degree-of-freedom pulley assembly 4 may also be formed by fixedly connecting a pulley base shaft 403 with a pulley frame 402, and the pulley frame 402 is rotatably connected with the hanger 1 or the top frame 6 through the pulley base shaft 403.

On the basis of any scheme, the lifting component 2 further comprises a diverting pulley 7, the diverting pulley 7 is rotatably arranged on the top frame 6, and the other end of the steel wire rope 5 sequentially bypasses the diverting pulley 7 and the two-degree-of-freedom pulley assembly 4.

The diverting pulley 7 is arranged to facilitate the connection of the steel wire rope 5 and the winch 3, and the winch 3 can be arranged at a proper position.

On the basis of either of the solutions described above, the axis of the diverting pulley 7 is vertical.

On the basis of any one of the above schemes, the lifting component 2 further comprises a fixed lifting point support 8, the fixed lifting point support 8 is fixedly connected with the lifting frame 1, and the other end of the steel wire rope 5 is fixedly connected with the fixed lifting point support 8.

The fixed hoisting point support 8 is used for connecting and fixing the end of the wire rope 5.

On the basis of any scheme, the number of the two-degree-of-freedom pulley assemblies 4 is two, wherein one of the two-degree-of-freedom pulley assemblies 4 is fixedly connected with the top frame 6, and the other one of the two-degree-of-freedom pulley assemblies is fixedly connected with the hanging bracket 1.

And the bending moment of the turning position of the steel wire rope 5 is reduced on the top frame 6 and the hanging bracket 1.

Preferably, as shown in fig. 1 and 3, the steel wire rope 5 is connected to a fixed suspension point support 8 having a certain height, and the fixed suspension point support 8 is set to have a suitable height, so that the steel wire rope 5 between the fixed suspension point support 8 and the two-degree-of-freedom pulley assembly 4 on the suspension bracket 1 is horizontal, and the steel wire rope 5 is pulled along its axis direction, thereby reducing the stress of the steel wire rope 5 in other directions.

On the basis of any scheme, the steel wire rope 5 positioned between the two-degree-of-freedom pulley assemblies 4 is vertically arranged. That is, the leading-out position of the steel wire rope 5 of one of the two-degree-of-freedom pulley assemblies 4 is vertically opposite to the penetrating position of the steel wire rope 5 of the other two-degree-of-freedom pulley assembly 4.

The steel wire rope 5 has high tensile strength, the oblique acting force on the steel wire rope 5 is reduced, the steel wire rope 5 is stressed as much as possible, and the hoisting strength is ensured.

On the basis of any scheme, at least three groups of lifting members 2 are uniformly distributed on the top surface of the hanger 1, and the at least three groups of lifting members 2 are not in the same straight line.

The acting force of at least three groups of lifting components 2 on the hanger 1 is uniform.

At least three sets of lifting components 2 are arranged on the top surface of the hanger 1 in a circular array or a rectangular array.

Specifically, at least three groups of the lifting components 2 are not in the same straight line along the horizontal direction.

Alternatively, at least three sets of lifting members 2 may be unevenly distributed on the top surface of the lifting frame 1.

On the basis of any scheme, the lifting components 2 are divided into three groups, and the three groups of lifting components 2 are uniformly distributed around the gravity center of the hanger 1 along the circumference.

On the basis of any scheme, the hanging bracket 1 is a circular or rectangular bracket body.

In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "axial", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A multi-lifting-point tilting lifting device is characterized by comprising a lifting frame (1), an upper frame (6) and at least three groups of lifting components (2), wherein each lifting component (2) comprises a winch (3), at least one two-degree-of-freedom pulley assembly (4) and a steel wire rope (5), the winch (3) is fixedly connected with the upper frame (6),

at least one pulley component (4) with two degrees of freedom is fixedly connected with the top frame (6) and/or the hanging bracket (1),

one end of the steel wire rope (5) is fixedly connected with the winch (3), the other end of the steel wire rope bypasses the two-degree-of-freedom pulley assembly (4) and is fixedly connected with the hanging bracket (1), and the two-degree-of-freedom pulley assembly (4) has two rotational degrees of freedom rotating around an X axis and a Y axis.

2. The multi-suspension-point tiltable lifting device as claimed in claim 1, wherein said two-degree-of-freedom pulley assembly (4) comprises a pulley (401), a pulley frame (402), and a pulley base shaft (403), said pulley (401) is rotatably mounted on said pulley frame (402) around the Y-axis, said pulley base shaft (403) is horizontally disposed and fixedly connected with said pulley frame (402), said pulley frame (402) is rotatably mounted on said pulley base shaft (403) around the X-axis, said pulley base shaft (403) is perpendicular to the axis of said pulley (401), and said wire rope (5) is wound around said pulley (401).

3. A multiple suspension point tiltable lifting device as in claim 1, wherein said lifting member (2) further comprises a diverting pulley (7), said diverting pulley (7) being rotatably mounted on said head frame (6), the other end of said wire rope (5) passing over said diverting pulley (7) and said two degree of freedom pulley assembly (4) in turn.

4. A multi-lifting-point tiltable lifting device as claimed in claim 3, characterized in that the axis of the diverting pulley (7) is vertical.

5. A multiple suspension point tiltable lifting device as claimed in claim 1, wherein said lifting member (2) further comprises a fixed suspension point support (8), said fixed suspension point support (8) being fixedly connected to said lifting frame (1), the other end of said wire rope (5) being fixedly connected to said fixed suspension point support (8).

6. The multi-suspension-point tiltable lifting device as claimed in claim 1, wherein the two-degree-of-freedom pulley assembly (4) is two, one of the two-degree-of-freedom pulley assembly (4) is fixedly connected to the top frame (6), and the other one is fixedly connected to the lifting frame (1).

7. A multi-drop tiltable lifting device according to claim 6, wherein said wire rope (5) between two said two degree of freedom sheave assemblies (4) is arranged vertically.

8. A multi-lifting-point tiltable lifting device as claimed in any of claims 1-7, characterized in that at least three sets of said lifting members (2) are evenly distributed on the top surface of said lifting frame (1) and at least three sets of said lifting members (2) are not in the same line.

9. A multi-lifting-point tiltable lifting device as claimed in claim 8, characterized in that said lifting members (2) are in three groups, said three groups of lifting members (2) being evenly distributed circumferentially around the centre of gravity of said lifting frame (1).

10. A multi-point tiltable lifting device as claimed in any of claims 1-7, wherein said lifting frame (1) is a circular or rectangular frame.

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