pulley assembly

Abstract

The present invention provides a pulley assembly, comprising: a bracket, the bracket comprising a mounting plate, a first upright plate, and a second upright plate, the first upright plate and the second upright plate being spaced apart from each other on the mounting plate; a wheel body, the wheel body being rotatably disposed between the first upright plate and the second upright plate; a first stop plate, the first stop plate being disposed on the first upright plate and positioned between the first upright plate and a first end of the wheel body, the first stop plate protruding upward from the wheel body; and a second stop plate being disposed on the second upright plate and positioned between the second upright plate and a second end of the wheel body, the second stop plate protruding upward from the wheel body. The technical solution of the present application effectively solves the problem in the related art of cables being stuck between the pulley and the bracket.

Description

Technical Field

[0001] The present invention relates to the technical field of pulleys, and in particular to a pulley assembly. Background Art

[0002] During the high-altitude maintenance and construction of power transmission lines, items must be transferred up and down through pulley structures and ropes.

[0003] The pulley structure consists of a bracket and a pulley mounted on the bracket. The pulley is equipped with a pulley groove. When transferring objects up and down, the pulley groove often does not match the lifting rope, and the rope often moves out of the pulley groove, causing it to get stuck between the pulley and the bracket, preventing the pulley from rotating. This, in turn, prevents the objects from being transferred up and down, significantly reducing work efficiency. Furthermore, during the construction of transmission line tensioning lines, the tensioning line traction rope or the grounding wire being pulled often moves out of the pulley groove, causing the pulley to get stuck and preventing further tensioning. If not discovered in time, it can lead to accidents such as broken wires and fallen poles. Summary of the Invention

[0004] The main purpose of the present invention is to provide a pulley assembly to solve the problem in the related art that the cable may be stuck between the pulley and the bracket.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a pulley assembly is provided, including: a bracket, the bracket including a mounting plate, a first vertical plate and a second vertical plate, the first vertical plate and the second vertical plate being spaced apart on the mounting plate; a wheel body, the wheel body being rotatably arranged between the first vertical plate and the second vertical plate; a first stop plate, the first stop plate being arranged on the first vertical plate and being located between the first vertical plate and the first end of the wheel body, the first stop plate protruding upward from the wheel body; a second stop plate, the second stop plate being arranged on the second vertical plate and being located between the second vertical plate and the second end of the wheel body, the second stop plate protruding upward from the wheel body.

[0006] Furthermore, the first stop plate is an arc-shaped plate with a convex middle portion.

[0007] Furthermore, the direction from the first end of the first vertical plate to the second end of the first vertical plate is perpendicular to the direction from the first vertical plate to the second vertical plate, the first end of the first stop plate is a first arcuate surface, and the second end of the first stop plate is a second arcuate surface.

[0008] Furthermore, the distance between any position on the outer contour surface of the first stop plate and the axis of the wheel body is greater than the outer diameter of the wheel body.

[0009] Furthermore, the pulley assembly further comprises a hanging frame body provided on a side of the mounting plate away from the wheel body, and a hanging through hole is provided on the hanging frame body.

[0010] Furthermore, the mounting plate is located between the top of the first vertical plate and the top of the second vertical plate, the bracket also includes a connecting plate arranged between the bottom end of the first vertical plate and the bottom end of the second vertical plate, and the wheel body is located between the mounting plate and the connecting plate.

[0011] Furthermore, the distance between the first vertical plate and the second vertical plate can be adjusted, the wheel body includes a first half wheel and a second half wheel that rotates synchronously with the first half wheel, the first half wheel is rotatably set on the first vertical plate, and the second half wheel is rotatably set on the second vertical plate.

[0012] Furthermore, the wheel body also includes a first shaft and a second shaft, the first end of the first shaft is rotatably set on the first vertical plate, the first end of the second shaft is rotatably set on the second vertical plate, the second end of the first shaft is fixedly connected to the first half wheel, and the second end of the second shaft is fixedly connected to the second half wheel.

[0013] Furthermore, a first avoidance recess is provided on a side of the first stop plate away from the mounting plate to avoid the first shaft, and / or a second avoidance recess is provided on a side of the second stop plate away from the mounting plate to avoid the second shaft.

[0014] Furthermore, the pulley assembly also includes a transition shaft arranged between the first half wheel and the second half wheel. When the distance between the first vertical plate and the second vertical plate is adjusted, the transition shaft moves toward or away from the second half wheel, or the transition shaft moves toward or away from the first half wheel.

[0015] Applying the technical solution of the present invention, the pulley assembly includes a bracket, a wheel body, a first stop plate, and a second stop plate. The bracket includes a mounting plate and a first vertical plate and a second vertical plate spaced apart on the mounting plate. The wheel body is rotatably disposed between the first vertical plate and the second vertical plate. A first stop plate is disposed on the first vertical plate, the first stop plate being located between the first vertical plate and the first end of the wheel body. A second stop plate is disposed on the second vertical plate, the second stop plate being located between the second vertical plate and the second end of the wheel body. Both the first stop plate and the second stop plate protrude upward from the wheel body. Through the above-mentioned arrangement, the mounting vertical plate can support the first vertical plate and the second vertical plate. The first vertical plate and the second vertical plate can support the wheel body. The first stopper plate can fill the gap between the first vertical plate and the wheel body, and the second stopper plate can fill the gap between the second vertical plate and the wheel body, thereby preventing the cable from falling off the wheel body and moving between the first end of the wheel body and the first vertical plate, or between the second end of the wheel body and the second vertical plate, thereby preventing the cable from being stuck between the first end of the wheel body and the first vertical plate or between the second end of the wheel body and the second vertical plate, thereby preventing the wheel body from being stuck. Therefore, the technical solution of the present application effectively solves the problem in the related art that the cable may be stuck between the pulley and the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a pulley assembly according to the present invention is shown;

[0018] Figure 2 Shown Figure 1 A schematic cross-sectional view of a pulley assembly;

[0019] Figure 3 Shown Figure 1 A schematic diagram of the three-dimensional structure of the pulley assembly after the distance between the first vertical plate and the second vertical plate bracket is adjusted;

[0020] Figure 4 Shown Figure 3 A schematic cross-sectional structural diagram of a pulley assembly;

[0021] Figure 5 Shown Figure 1 Schematic diagram of the three-dimensional structure of the first stop plate of the pulley assembly.

[0022] The above drawings include the following reference numerals:

[0023] 10. Bracket; 11. Mounting plate; 12. First vertical plate; 13. Second vertical plate; 14. Connecting plate; 20. Wheel body; 21. First half wheel; 22. Second half wheel; 23. First shaft; 24. Second shaft; 30. First stop plate; 31. First avoidance recess; 40. Second stop plate; 41. Second avoidance recess; 50. Lifting frame; 51. Lifting through hole; 60. Transition shaft. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0027] like Figure 1 As shown, the pulley assembly of this embodiment includes: a bracket 10, a wheel body 20, a first stop plate 30, and a second stop plate 40. The bracket 10 includes a mounting plate 11, a first vertical plate 12, and a second vertical plate 13. The first vertical plate 12 and the second vertical plate 13 are spaced apart on the mounting plate 11. The wheel body 20 is rotatably disposed between the first vertical plate 12 and the second vertical plate 13. The first stop plate 30 is disposed on the first vertical plate 12 and is located between the first vertical plate 12 and the first end of the wheel body 20. The first stop plate 30 protrudes upward from the wheel body 20. The second stop plate 40 is disposed on the second vertical plate 13 and is located between the second vertical plate 13 and the second end of the wheel body 20. The second stop plate 40 protrudes upward from the wheel body 20.

[0028] Applying the technical solution of this embodiment, the pulley assembly includes a bracket 10, a wheel body 20, a first stop plate 30, and a second stop plate 40. The bracket 10 includes a mounting plate 11 and a first vertical plate 12 and a second vertical plate 13 spaced apart on the mounting plate 11. The wheel body 20 is rotatably disposed between the first vertical plate 12 and the second vertical plate 13. A first stop plate 30 is disposed on the first vertical plate 12, and the first stop plate 30 is located between the first vertical plate 12 and the first end of the wheel body 20. A second stop plate 40 is disposed on the second vertical plate 13, and the second stop plate 40 is located between the second vertical plate 13 and the second end of the wheel body 20. The first stop plate 30 and the second stop plate 40 both protrude upward from the wheel body 20. Through the above arrangement, the mounting plate 11 can support the first vertical plate 12 and the second vertical plate 13. The first vertical plate 12 and the second vertical plate 13 can support the wheel body 20. The first stopper plate 30 can fill the gap between the first vertical plate 12 and the wheel body 20, and the second stopper plate 40 can fill the gap between the second vertical plate 13 and the wheel body 20. This prevents the cable from falling off the wheel body 20 and moves between the first end of the wheel body 20 and the first vertical plate 12, or between the second end of the wheel body 20 and the second vertical plate 13, thereby preventing the cable from being stuck between the first end of the wheel body 20 and the first vertical plate 12 or the second end of the wheel body 20 and the second vertical plate 13, thereby preventing the wheel body 20 from being stuck. Therefore, the technical solution of this embodiment effectively solves the problem in the related art that the cable may be stuck between the pulley and the bracket.

[0029] The pulley assembly in this embodiment is a fixed pulley assembly.

[0030] like Figure 1 and Figure 4 As shown, in the present embodiment, the first stop plate 30 is a curved plate with a convex middle portion. By the above arrangement, the overall structure of the first stop plate 30 is made smaller, and the stopping of the rope can also be achieved.

[0031] like Figure 3 and Figure 4 As shown, in this embodiment, the direction from the first end of the first upright plate 12 to the second end of the first upright plate 12 is perpendicular to the direction from the first upright plate 12 to the second upright plate 13. The first end of the first stop plate 30 is a first curved surface, and the second end of the first stop plate 30 is a second curved surface. This ensures smoother contact between the first and second ends of the first stop plate 30, preventing injuries to operators from coming into contact with the first stop plate 30. It also prevents the cable from being punctured by the first stop plate 30.

[0032] like Figure 1 and Figure 4As shown, in this embodiment, the distance between any position on the outer contour surface of the first stop plate 30 and the axis of the wheel body 20 is greater than the outer diameter of the wheel body 20. This allows the first stop plate 30 to stop more areas and more effectively limit the cable.

[0033] The second stop plate 40 has the same structure as the first stop plate 30. The thickness of the first stop plate 30 is between 3 mm and 6 mm, specifically, 3 mm, 4 mm, 5 mm or 6 mm. In this embodiment, the thickness of the first stop plate 30 is 5 mm.

[0034] like Figure 3 As shown, in this embodiment, the pulley assembly further comprises a hoisting frame 50 provided on a side of the mounting plate 11 away from the wheel body 20, and a hoisting through hole 51 is provided on the hoisting frame 50. Through the hoisting through hole 51, the pulley assembly can be driven to rise and fall.

[0035] The material of the bracket 10 , the wheel body 20 , the first stop plate 30 , the second stop plate 40 and the hanging frame 50 is 304 stainless steel.

[0036] like Figure 3 As shown, in this embodiment, the mounting plate 11 is located between the top of the first upright plate 12 and the top of the second upright plate 13. The bracket 10 also includes a connecting plate 14 disposed between the bottom end of the first upright plate 12 and the bottom end of the second upright plate 13. The wheel body 20 is located between the mounting plate 11 and the connecting plate 14. The connecting plate 14 can connect the bottom end of the first upright plate 12 and the bottom end of the second upright plate 13, thereby making the overall structure of the bracket 10 more stable.

[0037] like Figure 2 and Figure 4 As shown, in this embodiment, the distance between the first upright plate 12 and the second upright plate 13 is adjustable, and the pulley body 20 includes a first half pulley 21 and a second half pulley 22 that rotates synchronously with the first half pulley 21. The first half pulley 21 is rotatably mounted on the first upright plate 12, and the second half pulley 22 is rotatably mounted on the second upright plate 13. The adjustable distance between the first upright plate 12 and the second upright plate 13 allows the distance between the first half pulley 21 and the second half pulley 22 to be adjusted, thereby allowing the pulley body 20 to adapt to different cables, making the pulley assembly more versatile.

[0038] like Figures 2 to 4As shown, in this embodiment, the wheel body 20 further includes a first shaft 23 and a second shaft 24. The first end of the first shaft 23 is rotatably disposed on the first vertical plate 12, and the first end of the second shaft 24 is rotatably disposed on the second vertical plate 13. The second end of the first shaft 23 is fixedly connected to the first half wheel 21, and the second end of the second shaft 24 is fixedly connected to the second half wheel 22. The first shaft 23 enables the first half wheel 21 to rotate relative to the first vertical plate 12. The second shaft 24 enables the second half wheel 22 to rotate relative to the second vertical plate 13.

[0039] like Figure 1 and Figure 5 As shown, in this embodiment, a first relief recess 31 is provided on the side of the first stop plate 30 away from the mounting plate 11 to provide clearance for the first shaft 23. A second relief recess 41 is provided on the side of the second stop plate 40 away from the mounting plate 11 to provide clearance for the second shaft 24. The first relief recess 31 can provide clearance for the first shaft 23, allowing the first shaft 23 to rotate smoothly. The second relief recess 41 can provide clearance for the second shaft 24, allowing the second shaft 24 to rotate smoothly.

[0040] like Figure 2 and Figure 3 As shown, in this embodiment, the pulley assembly further includes a transition shaft 60 disposed between the first half pulley 21 and the second half pulley 22. When the distance between the first upright plate 12 and the second upright plate 13 is adjusted, the transition shaft 60 moves toward or away from the second half pulley 22, or the transition shaft 60 moves toward or away from the first half pulley 21. When the distance between the first half pulley 21 and the second half pulley 22 is adjusted, the transition shaft 60 can fill the gap between the first half pulley 21 and the second half pulley 22, thereby preventing the cable from being stuck between the first half pulley 21 and the second half pulley 22.

[0041] The pulley assembly also includes an adjusting screw, the first end of which is rotatably disposed in the first shaft 23, and the middle part of the adjusting screw is threadedly engaged with the second half wheel 22, so that when the adjusting screw rotates, it can drive the second half wheel 22 closer to or away from the first half wheel 21.

[0042] In this embodiment, the first end of the transition shaft 60 is disposed on the first half wheel 21 , and the second end of the transition shaft 60 extends into the second half wheel 22 .

[0043] A mounting hole is provided on the side of the first half wheel 21 facing the second half wheel 22, and an avoidance hole is provided on the side of the second half wheel 22 facing the first half wheel 21. The first end of the transition shaft 60 is located in the mounting hole, and the second end of the transition shaft 60 extends into the avoidance hole.

[0044] The diameter of the mounting hole on the side facing the second sheave half 22 is the same as the outer diameter of the first sheave half 21 on the side facing the second sheave half 22. The intersection of the mounting hole and the outer surface of the first sheave half forms an arc transition. This prevents the cable from being scratched by the intersection of the mounting hole and the outer surface of the first sheave half.

[0045] The diameter of the side of the avoidance hole facing the first half wheel 21 is the same as the outer diameter of the side of the second half wheel 22 facing the first half wheel 21. The intersection of the avoidance hole and the outer surface of the second half wheel forms an arc transition. This can prevent the cable from being scratched at the intersection of the avoidance hole and the outer surface of the second half wheel.

[0046] The pulley assembly also includes a bellows connected to the outer surface of the first half wheel 21 and the second half wheel 22. The middle part of the bellows is sleeved on the outer circumference of the transition shaft. This can prevent the rope from being scratched by the intersection of the installation hole and the outer surface of the first half wheel and the intersection of the avoidance hole and the outer surface of the second half wheel, that is, it can protect the rope.

[0047] The top end of the second vertical plate 13 is movably disposed on the mounting plate 11 , and the bottom end of the second vertical plate 13 is movably disposed on the connecting plate 14 .

[0048] The bracket 10 further includes a first connection frame disposed at the top end of the second vertical plate 13, into which the mounting plate 11 is inserted. The mounting plate 11 is provided with an anti-slip plate that cooperates with the first connection frame to prevent slipping.

[0049] An open slot is provided in the middle of the connecting plate 14 , and the bracket 10 further includes an inserting plate provided at the bottom end of the second vertical plate 13 , which is inserted into the open slot.

[0050] The pulley assembly can withstand a pulling force of 1000 kg and can ensure that the equipment is pulled up and will not corrode when used outdoors.

[0051] The first stop plate 30 and the second stop plate 40 are bent in one piece, and have strong impact resistance and strength.

[0052] The mounting plate 11, the first vertical plate 12 and the connecting plate 14 are connected by welding, the hanging frame 50 and the mounting plate 11 are connected by welding, the second vertical plate 13, the connecting frame and the plug plate are connected by welding, and the welds are polished after welding.

[0053] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0055] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0056] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A pulley assembly, characterized in that: include: A bracket (10), the bracket (10) comprising a mounting plate (11), a first vertical plate (12), and a second vertical plate (13), wherein the first vertical plate (12) and the second vertical plate (13) are spaced apart and arranged on the mounting plate (11); a wheel body (20), the wheel body (20) being rotatably disposed between the first vertical plate (12) and the second vertical plate (13); a first stop plate (30), the first stop plate (30) being disposed on the first vertical plate (12) and being located between the first vertical plate (12) and the first end of the wheel body (20), the first stop plate (30) protruding upward from the wheel body (20); A second stop plate (40) is provided on the second vertical plate (13) and is located between the second vertical plate (13) and the second end of the wheel body (20), and the second stop plate (40) protrudes upward from the wheel body (20).

2. The pulley assembly according to claim 1, wherein: The first stop plate (30) is an arc-shaped plate with an upward convex middle portion.

3. The pulley assembly according to claim 1 or 2, characterized in that: The direction from the first end of the first vertical plate (12) to the second end of the first vertical plate (12) is perpendicular to the direction from the first vertical plate (12) to the second vertical plate (13), the first end of the first stop plate (30) is a first arcuate surface, and the second end of the first stop plate (30) is a second arcuate surface.

4. The pulley assembly according to claim 1 or 2, characterized in that: The distance between any position on the outer contour surface of the first stop plate (30) and the axis of the wheel body (20) is greater than the outer diameter of the wheel body (20).

5. The pulley assembly according to claim 1 or 2, characterized in that: The pulley assembly further comprises a hanging frame (50) arranged on a side of the mounting plate (11) away from the wheel body (20), and a hanging through hole (51) is provided on the hanging frame (50).

6. The pulley assembly according to claim 1 or 2, characterized in that: The mounting plate (11) is located between the top end of the first vertical plate (12) and the top end of the second vertical plate (13); the bracket (10) further includes a connecting plate (14) arranged between the bottom end of the first vertical plate (12) and the bottom end of the second vertical plate (13); and the wheel body (20) is located between the mounting plate (11) and the connecting plate (14).

7. The pulley assembly according to claim 6, wherein: The distance between the first vertical plate (12) and the second vertical plate (13) is adjustable, and the wheel body (20) includes a first half wheel (21) and a second half wheel (22) that rotates synchronously with the first half wheel (21), the first half wheel (21) is rotatably set on the first vertical plate (12), and the second half wheel (22) is rotatably set on the second vertical plate (13).

8. The pulley assembly according to claim 7, wherein: The wheel body (20) further includes a first shaft body (23) and a second shaft body (24), wherein the first end of the first shaft body (23) is rotatably disposed on the first vertical plate (12), the first end of the second shaft body (24) is rotatably disposed on the second vertical plate (13), the second end of the first shaft body (23) is fixedly connected to the first half wheel (21), and the second end of the second shaft body (24) is fixedly connected to the second half wheel (22).

9. The pulley assembly according to claim 8, wherein: A first avoidance recess (31) is provided on a side of the first stop plate (30) away from the mounting plate (11) to avoid the first shaft (23), and / or a second avoidance recess (41) is provided on a side of the second stop plate (40) away from the mounting plate (11) to avoid the second shaft (24).

10. The pulley assembly according to claim 8, wherein: The pulley assembly further comprises a transition shaft (60) arranged between the first half wheel (21) and the second half wheel (22); when the distance between the first vertical plate (12) and the second vertical plate (13) is adjusted, the transition shaft (60) moves toward or away from the second half wheel (22); or, the transition shaft (60) moves toward or away from the first half wheel (21).

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