A pulley anti - detachment device for a self - disassembling device

Abstract

The present invention discloses a pulley anti - detachment device for a self - disassembling device. The pulley includes a wheel, side plates installed on both sides of the wheel, and a rotating shaft fixedly connecting the wheel and the side plates; the wheel is installed on the rotating shaft through a bearing; a steel wire rope for hoisting is placed on the wheel; anti - detachment blocks are respectively installed on the side plates on both sides of the wheel; the anti - detachment blocks are in a circular - ring sector structure; an inclined - angle notch in the tangential direction with the same angle as the wheel is provided on the upper part of the anti - detachment blocks. The present invention adds the design of anti - detachment blocks on both sides of the pulley. The anti - detachment blocks correspond to both sides of the pulley in the pulley structure. While ensuring the smooth and normal operation of the pulley, it prevents the steel wire rope from detaching from the pulley groove, moving to the gap between the side plate and the pulley and wearing, and also prevents the detachment and eccentricity between the bearing and the pulley structure that may be caused in the gap, realizing the side anti - detachment of the steel wire rope and the pulley, thereby improving the disassembly safety and disassembly efficiency of the self - disassembling tower crane.

Description

Technical Field

[0001] The present invention relates to an anti - detachment device for the pulley of a self - dismantling device, belonging to the technical field of the upper - structure self - dismantling device of tower cranes. Background Art

[0002] For tower cranes with self - dismantling upper structures, during self - dismantling, the self - dismantling device is within a continuously changing angular range. In the past, the design of the rope - blocking rod device would interfere with the steel wire rope at this time. When interference occurs, it will exacerbate the wear of the steel wire rope, and at the same time affect the lifting load and is prone to lifting load hazards. In addition, due to the extremely high working height, when the force on the steel wire rope is small, the steel wire rope is prone to swing with the wind. Therefore, when designing the pulley structure of the self - dismantling device, it is necessary to consider the lateral movement of the steel wire rope during lifting and the swing of the steel wire rope when not lifting. In view of this, an anti - detachment block is designed for side anti - detachment to meet the safety operation and disassembly efficiency of the self - dismantling device.

[0003] In the existing pulley structure, when the gap between the side plates and the pulley changes, it cannot well ensure the gap distance. When the distance between the two side plates becomes larger, the distance between the pulley and the side plates also becomes larger. To avoid safety accidents, it is necessary to redesign the structure, which is time - consuming and laborious and increases costs. For ultra - high - altitude self - dismantling lifting, the distance between the two side plates of the pulley on the pulley structure will change with different disassembly positions. At this time, the change in the side - plate gap is prone to cause the steel wire rope to disengage from the pulley groove, and this disengagement is prone to cause the deep - groove ball bearing to bear the axial component force and be damaged, triggering safety accidents; in addition, the rope - blocking rods installed on both sides in the existing pulley structure will interfere with the steel wire rope when the angle of the self - dismantling device changes. If a single rope - blocking rod with a short distance from the pulley is installed at the end, it will also interfere with the steel wire rope when the lifting angle changes. When the lifting angle changes greatly, it will cause wear of the steel wire rope and reduce the service life. Therefore, it is not suitable for ultra - high - altitude lifting. Summary of the Invention

[0004] In order to overcome the deficiencies of the above - mentioned prior art, considering that the self - dismantling of tower cranes is high - altitude operation and the lifting height of the steel wire rope is high, for the situation where the distance between the pulley structure and the side plates on the jib of the self - dismantling device is large and will change, anti - detachment blocks are added to both sides of the pulley. The anti - detachment blocks correspond to both sides of the pulley on the pulley structure. While ensuring the smooth and normal operation of the pulley, it prevents the steel wire rope from disengaging from the pulley groove, moving laterally to the gap between the side plate and the pulley and wearing, as well as the possible disengagement and eccentricity between the bearing and the pulley structure in the gap, realizing the side anti - detachment of the steel wire rope and the pulley, thereby improving the disassembly safety and disassembly efficiency of the self - dismantling tower crane.

[0005] The present invention is realized through the following technical solutions. A pulley anti - detachment device for a self - dismantling device, the pulley includes a wheel, side plates installed on both sides of the wheel, and a rotating shaft fixedly connecting the wheel and the side plates; the wheel is installed on the rotating shaft through a bearing; a steel wire rope for hoisting is placed on the wheel; anti - detachment blocks are respectively installed on the side plates on both sides of the wheel.

[0006] The anti - detachment block is of an annular sector structure; an inclined notch in the tangential direction with the same angle as the wheel is provided on the upper part of the anti - detachment block.

[0007] As a preferred scheme of the pulley anti - detachment device for a self - dismantling device of the present invention: a rope - blocking rod is installed on the upper part of the side plate;

[0008] The distance from the rope - blocking rod to the outer edge of the wheel is 2.5 - 3 times the diameter of the steel wire rope.

[0009] As a preferred scheme of the pulley anti - detachment device for a self - dismantling device of the present invention: at least two mounting holes are provided on the anti - detachment block;

[0010] The side plate is fixedly connected to the mounting holes on the anti - detachment block through bolts.

[0011] As a preferred scheme of the pulley anti - detachment device for a self - dismantling device of the present invention: the mounting holes are threaded through - holes or threaded blind - holes.

[0012] [[ID=2I]]Advantages of the present invention:

[0013] 1. Through the design of the anti - detachment block, the gap between the side plate and the pulley is reduced, for side anti - detachment, improving the hoisting efficiency and operation safety.

[0014] 2. The modular design of the anti - detachment block enables the combination of anti - detachment blocks when the gap changes, quickly compensating for different gaps to achieve the purpose of preventing the steel wire rope from detaching.

[0015] 3. The installation of the anti - detachment block is convenient, safe and efficient, reducing the repeated design of the structure and saving costs.

[0016] 4. The installation of the anti - detachment block facilitates the maintenance of the pulley and improves the device disassembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the present invention;

[0018] Figure 2 is the left view of the present invention;

[0019] Figure 3 is the front view of the anti - detachment block;

[0020] Figure 4 is the schematic diagram of the threaded through - hole of the mounting hole;

[0021] Figure 5 This is a schematic diagram of the mounting hole being a threaded blind hole;

[0022] In the figure: 1-wheel; 2-side panel; 3-rotating shaft; 4-rope stop rod; 5-anti-fall block; 6-mounting hole.

[0023] Explanation of related terms

[0024] Pulley: A structure on a tower crane that assists the wire rope in lifting. The wire rope passes through the pulley to arrange, lift and lower the wire rope, completing the lifting operation of the tower crane. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0028] Reference Figures 1-5 As a first embodiment of the present invention, a self-detaching pulley anti-slip device is provided, wherein the pulley comprises a wheel 1, side plates 2 mounted on both sides of the wheel 1, and a rotating shaft 3 fixedly connecting the wheel 1 and the side plates 2; the wheel 1 is mounted on the rotating shaft 3 via a bearing; a steel wire rope for hoisting is placed on the wheel 1; and anti-slip blocks 5 are respectively mounted on the side plates 2 on both sides of the wheel 1;

[0029] The anti-slip block 5 is a circular sector structure; an oblique notch is provided on the upper portion of the anti-slip block 5 in the same tangential direction as the wheel 1 at the same angle.

[0030] A rope blocking rod 4 is installed on the upper part of the side plate 2;

[0031] The distance between the rope blocking rod 4 and the outer edge of the wheel 1 is 2.5-3 times the diameter of the wire rope.

[0032] The anti-drop block 5 is provided with at least two mounting holes 6;

[0033] The side panels 2 are fixedly connected to the mounting holes 6 on the anti-slip blocks 5 by means of bolts.

[0034] The mounting hole 6 is a threaded through hole or a threaded blind hole.

[0035] Specifically, in order to increase the contact area between the wheel 1 and the wire rope, a wheel groove is provided on the wheel 1. The design of the anti - detachment block 5 extends the wheel groove of the wheel 1, preventing the wire rope from disengaging into the gap between the wheel 1 and the side plate, facilitating the wire arrangement and rope retraction during wire rope hoisting. Therefore, the present invention is applicable to a pulley structure with a relatively large gap between the two plates 2 and the wheel 1. The anti - detachment block 5 is designed as an annular sector, which not only reduces the use of anti - detachment block materials and saves costs, but also reduces the weight of the pulley.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A self-detaching pulley anti-slip device, the pulley comprising a wheel (1), side plates (2) mounted on both sides of the wheel (1), and a rotating shaft (3) fixedly connecting the wheel (1) and the side plates (2); the wheel (1) is mounted on the rotating shaft (3) via a bearing; a steel wire rope for hoisting is placed on the wheel (1); the characteristics are: Anti-slip blocks (5) are respectively installed on the side plates (2) on both sides of the wheel (1); The anti-slip block (5) is a circular sector structure; the upper portion of the anti-slip block (5) is provided with an oblique notch in the same tangential direction as the wheel (1); the upper portion of the side plate (2) is provided with a rope blocking rod (4); The distance between the rope blocking rod (4) and the outer edge of the wheel (1) is 2.5-3 times the diameter of the wire rope; the anti-fall-off block (5) is provided with at least two mounting holes (6); The side plate (2) is fixedly connected to the mounting hole (6) on the anti-slip block (5) via bolts.

2. The pulley anti-slip device of the self-detaching device according to claim 1, characterized in that: The mounting hole (6) is a threaded through hole or a threaded blind hole.

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