Pulley assembly

Abstract

The invention provides a pulley assembly, comprising: a support, the support comprising a mounting plate, a first vertical plate and a second vertical plate, the first vertical plate and the second vertical plate being arranged on the mounting plate at an interval; the wheel body is rotatably arranged between the first vertical plate and the second vertical plate; the first stopping plate is arranged on the first vertical plate and located between the first vertical plate and the first end of the wheel body, and the first stopping plate upwards protrudes out of the wheel body; the second stopping plate is arranged on the second vertical plate and located between the second vertical plate and the second end of the wheel body, and the second stopping plate protrudes out of the wheel body upwards. According to the technical scheme, the problem that in the prior art, a rope may be clamped between the pulley and the support is effectively solved.

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, objects need to be transferred up and down through pulley structures and ropes.

[0003] The pulley structure includes a bracket and a pulley arranged on the bracket. The pulley is provided with a pulley groove. When transferring objects up and down, the pulley groove and the lifting rope often do not match, and the rope often moves out of the pulley groove, causing the rope to get stuck between the pulley and the bracket, resulting in the pulley being unable to rotate, and then causing the objects to be unable to be transferred up and down, greatly reducing work efficiency. In addition, during the construction of the tensioning line of the transmission line, the tensioning line traction rope or the towed ground wire often moves out of the pulley groove, causing the pulley to get stuck and the tensioning line to be unable to continue. If it is not discovered in time, it will also lead to accidents such as broken wires and falling 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 are arranged on the mounting plate with an interval; a wheel body, the wheel body is rotatably arranged between the first vertical plate and the second vertical plate; a first stop plate, the first stop plate is arranged on the first vertical plate and is located between the first vertical plate and the first end of the wheel body, the first stop plate protrudes upward from the wheel body; a second stop plate, the second stop plate is arranged on the second vertical plate and is located between the second vertical plate and the second end of the wheel body, the second stop plate protrudes 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 also includes a hanging frame body arranged on a side of the mounting plate away from the wheel body, and a hanging through hole is arranged 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 rotating 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 disposed on the first vertical plate, the first end of the second shaft is rotatably disposed 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 is 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 is located between the second vertical plate and the second end of the wheel body, and the first stop plate and the second stop plate both 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 stop plate can fill the gap between the first vertical plate and the wheel body, and the second stop plate can fill the gap between the second vertical plate and the wheel body, so as to prevent 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 drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the 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 Shows Figure 1 A schematic cross-sectional view of a pulley assembly;

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

[0020] Figure 4 Shows Figure 3 A schematic cross-sectional view of a pulley assembly;

[0021] Figure 5 Shows Figure 1 A 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 body; 24. Second shaft body; 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 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 described embodiments 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 by no means 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 creative work 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, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, 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 the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method 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 exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain 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, and the first vertical plate 12 and the second vertical plate 13 are arranged on the mounting plate 11 at intervals. The wheel body 20 is rotatably arranged between the first vertical plate 12 and the second vertical plate 13. The first stop plate 30 is arranged on the first vertical plate 12 and is located between the first vertical plate 12 and the first end of the wheel body 20, and the first stop plate 30 protrudes upward from the wheel body 20. The second stop plate 40 is arranged 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.

[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 arranged between the first vertical plate 12 and the second vertical plate 13. A first stop plate 30 is arranged 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 arranged 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 stop plate 30 can fill the gap between the first vertical plate 12 and the wheel body 20, and the second stop plate 40 can fill the gap between the second vertical plate 13 and the wheel body 20, so as to prevent the cable from falling off the wheel body 20 and moving 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 that the cable may be stuck between the pulley and the bracket in the related art.

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

[0030] like Figure 1 and Figure 4 As shown, in this embodiment, the first stop plate 30 is an arc-shaped plate with a convex middle portion. Through the above arrangement, the overall structure of the first stop plate 30 is smaller, and the cable can also be stopped.

[0031] like Figure 3 and Figure 4 As shown, in this embodiment, 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 arc surface, and the second end of the first stop plate 30 is a second arc surface. In this way, the first end and the second end of the first stop plate 30 can be smoother, avoiding injuries to operators when they come into contact with the first stop plate 30. It can also prevent the rope and the first stop plate 30 from piercing the rope.

[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. In this way, the first stop plate 30 can stop more areas and limit the cable more effectively.

[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 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 arranged on the hanging frame 50. Through the hanging 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 vertical plate 12 and the top of the second vertical plate 13, the bracket 10 further includes a connecting plate 14 disposed between the bottom of the first vertical plate 12 and the bottom of the second vertical plate 13, and the wheel body 20 is located between the mounting plate 11 and the connecting plate 14. The connecting plate 14 can connect the bottom of the first vertical plate 12 and the bottom of the second vertical plate 13, so that the overall structure of the bracket 10 is more stable.

[0037] like Figure 2 and Figure 4 As shown, in this embodiment, the distance between the first vertical plate 12 and the second vertical plate 13 is adjustable, 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 arranged on the first vertical plate 12, and the second half wheel 22 is rotatably arranged on the second vertical plate 13. The distance between the first vertical plate 12 and the second vertical plate 13 is adjustable, so that the distance between the first half wheel 21 and the second half wheel 22 can be adjusted, and then the wheel body 20 can adapt to different cables, so that the pulley assembly has better versatility.

[0038] like Figures 2 to 4As shown, in this embodiment, the wheel body 20 further includes a first shaft body 23 and a second shaft body 24, 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. The first shaft body 23 enables the first half wheel 21 to rotate relative to the first vertical plate 12. The second shaft body 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 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 body 23, and 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 body 24. The first avoidance recess 31 can avoid the first shaft body 23, so that the first shaft body 23 can rotate smoothly. The second avoidance recess 41 can avoid the second shaft body 24, so that the second shaft body 24 can 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 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. When the distance between the first half wheel 21 and the second half wheel 22 is adjusted, the transition shaft 60 can fill the gap between the first half wheel 21 and the second half wheel 22 to prevent the cable from being stuck between the first half wheel 21 and the second half wheel 22.

[0041] The pulley assembly also includes an adjusting screw, the first end of which is rotatably disposed in the first shaft body 23, and the middle part of the adjusting screw is threadably engaged with the second half wheel 22, so that when the adjusting screw rotates, it can drive the second half wheel 22 to approach or move 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 half wheel 22 is the same as the outer diameter of the first half wheel 21 on the side facing the second half wheel 22. The intersection of the mounting hole and the outer surface of the first half wheel is an arc transition, which can prevent the cable from being scratched by the intersection of the mounting hole and the outer surface of the first half wheel.

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

[0046] The pulley assembly also includes a bellows connected to the outer surfaces of the first half wheel 21 and the second half wheel 22, and the middle part of the bellows is sleeved on the outer circumference of the transition shaft, so as to prevent the rope from being cut 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 also includes a first connection frame arranged at the top end of the second vertical plate 13, and the mounting plate 11 is inserted into the first connection frame. The mounting plate 11 is provided with an anti-drop plate, which cooperates with the first connection frame to prevent it from dropping out.

[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 , and the inserting plate is inserted into the open slot.

[0050] The pulley assembly can withstand a pulling force of 1,000 kg and can ensure that the equipment is pulled up and is corrosion-free when used outdoors.

[0051] The first stop plate 30 and the second stop plate 40 are integrally bent 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 is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the 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 devices or elements 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 contours 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 here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. 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 figure. For example, if the device in the accompanying 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. If not 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 above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope 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), the first vertical plate (12) and the second vertical plate (13) being arranged on the mounting plate (11) at intervals; 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 arranged 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), the second stop plate (40) is arranged 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, characterized in that: The first stop plate (30) is an arc-shaped plate with a 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 arranged 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, characterized in that The distance between the first vertical plate (12) and the second vertical plate (13) is adjustable, the wheel body (20) comprises a first half wheel (21) and a second half wheel (22) which rotates synchronously with the first half wheel (21), the first half wheel (21) is rotatably arranged on the first vertical plate (12), and the second half wheel (22) is rotatably arranged on the second vertical plate (13).

8. The pulley assembly according to claim 7, characterized in that: The wheel body (20) further comprises 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, characterized in that 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, characterized in that The pulley assembly also includes 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 in a direction approaching or moving away from the second half wheel (22), or the transition shaft (60) moves in a direction approaching or moving away from the first half wheel (21).

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