Pulley assembly

Abstract

The utility model relates to the technical field of pulleys, and discloses a pulley assembly which comprises a pulley base, a connecting shaft and a pulley, the connecting shaft is installed on the pulley base, a bearing is installed in the pulley, the pulley is arranged on the connecting shaft through the bearing, connecting ends are eccentrically arranged at the two ends of the connecting shaft, and the connecting ends are connected with the pulley. A shaft sleeve and an end cover are respectively arranged on the two connecting ends, the two connecting ends are respectively connected with the pulley base through the shaft sleeve and the end cover, and the connecting ends and the middle part of the connecting shaft body are not on the same circle center, namely, the axis of the connecting shaft body deviates between the two ends and the middle part to form an eccentric structure; the tower clearance adjusting device effectively solves the problems that the existing tower clearance adjustment is mainly realized by manually adjusting fasteners such as bolts and nuts, the method is time-consuming and labor-consuming, the adjusting precision is limited, and the high requirements of modern engineering on precision and efficiency are difficult to meet.

Description

Technical Field

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

[0002] Adjusting the gap between towers is a crucial step in the construction and maintenance of large structures such as tower cranes, wind turbines, and communication towers. This adjustment not only affects the stability of the tower structure but also directly impacts the equipment's operating efficiency and service life. Traditionally, tower gap adjustment is primarily achieved by manually adjusting fasteners such as bolts and nuts. This method is not only time-consuming and labor-intensive, but also offers limited accuracy, making it difficult to meet the high precision and efficiency requirements of modern engineering. Utility Model Content

[0003] The purpose of the present utility model is to solve the problem mentioned in the above background technology that the adjustment of the existing tower gap is mainly achieved by manually adjusting fasteners such as bolts and nuts. This method is not only time-consuming and labor-intensive, but also has limited adjustment accuracy, which makes it difficult to meet the high requirements of modern engineering for accuracy and efficiency.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A pulley assembly includes a pulley base, a connecting shaft and a pulley, the connecting shaft is installed on the pulley base, a bearing is installed inside the pulley, the pulley is arranged on the connecting shaft through the bearing, connecting ends are eccentrically provided at both ends of the connecting shaft, a shaft sleeve and an end cover are respectively provided on the two connecting ends, the two connecting ends are connected to the pulley base through the shaft sleeve and the end cover respectively, the connecting ends and the middle part of the connecting shaft body are not on the same center, that is, the axis of the connecting shaft body is offset between the two ends and the middle part, forming an eccentric structure.

[0006] Preferably, one of the connecting ends is provided with a positioning end, and a positioning plate is provided on the positioning end. The positioning plate is mounted on the pulley base through an adjusting screw, and the connecting shaft can be positioned through the positioning plate.

[0007] Preferably, a movable hole is provided on the positioning plate, the adjusting screw passes through the movable hole and is connected to the pulley base, and the positioning plate is connected to the connecting end with the positioning end through the connecting screw. The movable hole allows the adjusting screw to not affect the rotation of the positioning plate when the positioning plate is rotated for adjustment.

[0008] Preferably, the sleeve is arranged on one side of the connecting end with a positioning end, and the sleeve is used to provide additional support and lubrication. The end cover is provided with a connecting bolt, and the connecting bolt passes through the end cover and is connected to the connecting end without a positioning end. The end cover is installed by the connecting bolt, and the end cover is used to protect the internal structure and prevent debris from entering.

[0009] Preferably, a lubrication channel is provided on the connecting shaft, and an oil cup is provided on one end of the lubrication channel close to the connecting bolt, and lubricating oil can be provided into the lubrication channel through the oil cup, thereby lubricating the bearing.

[0010] The pulley is provided with a clamping ring, which can fix the position of the bearing to prevent it from moving horizontally on the connecting shaft.

[0011] Preferably, the pulley is symmetrically provided with mounting grooves, the bearing is placed in the mounting grooves, a clamping groove is provided in the mounting groove, the clamping ring is in the clamping groove, the clamping ring can be stably fixed and installed through the clamping groove, and the clamping ring can fix the position of the bearing.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model provides a connecting shaft with an eccentric shaft structure, so that the operator can accurately control the height of the pulley and thereby achieve fine adjustment of the gap between the towers by simply adjusting the eccentricity of the eccentric shaft without disassembling or adjusting the tower structure on a large scale. This design greatly improves the flexibility and accuracy of adjustment, meets the strict requirements for the tower gap under different working environments and operation needs, and can ensure that the gap is uniform and reasonable when the tower is at different height positions, effectively reducing the shaking and vibration caused by excessive or insufficient gap, thereby significantly improving the stability and safety of the tower operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a position view of the positioning plate of the utility model;

[0017] Figure 3 It is a partial structural sectional view of the utility model;

[0018] Figure 4 This is a cross-sectional view of the pulley of the utility model;

[0019] Figure 5 This is a structural view of the connecting shaft of the utility model;

[0020] Figure 6 It is a cross-sectional view of the connecting shaft of the present utility model.

[0021] Explanation of the figure numbers: 1. Pulley base; 2. Pulley; 21. Mounting groove; 22. Clamping groove; 3. Bearing; 4. Clamping ring; 5. End cover; 6. Connecting shaft; 61. Connecting end; 62. Positioning end; 63. Lubrication channel; 7. Bushing; 8. Positioning plate; 81. Moving hole; 9. Connecting screw; 10. Adjusting screw; 11. Connecting bolt; 12. Oil cup. DETAILED DESCRIPTION

[0022] The present invention is described in further detail below with reference to the accompanying drawings.

[0023] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0024] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate directions or positions are based on the directions or positional relationships shown in the accompanying drawings, which are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0025] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity. Example

[0026] See also Figures 1-6 A pulley assembly includes a pulley base 1, a connecting shaft 6 and a pulley 2. The connecting shaft 6 is installed on the pulley base 1. A bearing 3 is installed inside the pulley 2. The pulley 2 is arranged on the connecting shaft 6 through the bearing 3. Connecting ends 61 are eccentrically provided at both ends of the connecting shaft 6. The two connecting ends 61 are respectively provided with shaft sleeves 7 and end covers 5. The two connecting ends 61 are respectively connected to the pulley base 1 through the shaft sleeves 7 and the end covers 5. The connecting ends 61 and the middle part of the connecting shaft 6 body are not on the same center, that is, the axis of the connecting shaft 6 body is offset between the two ends and the middle part, forming an eccentric structure.

[0027] Furthermore, a positioning end 62 is provided on one of the connection ends 61 , and a positioning plate 8 is provided on the positioning end 62 . The positioning plate 8 is mounted on the pulley base 1 through an adjusting screw 10 , and the connecting shaft 6 can be positioned through the positioning plate 8 .

[0028] A movable hole 81 is provided on the positioning plate 8, and the adjusting screw 10 passes through the movable hole 81 and is connected to the pulley base 1. The positioning plate 8 is connected to the connecting end 61 with the positioning end 62 through the connecting screw 9. The movable hole 81 ensures that when the positioning plate 8 is rotated for adjustment, the adjusting screw 10 will not affect the rotation of the positioning plate 8.

[0029] Furthermore, the sleeve 7 is arranged on one side of the connecting end 61 with the positioning end 62, and the sleeve 7 is used to provide additional support and lubrication. The end cover 5 is provided with a connecting bolt 11, which passes through the end cover 5 and is connected to the connecting end 61 without the positioning end 62. The end cover 5 is installed through the connecting bolt 11, and the end cover 5 is used to protect the internal structure and prevent debris from entering.

[0030] It should be added that a lubrication channel 63 is provided on the connecting shaft 6 , and an oil cup 12 is provided on one end of the lubrication channel 63 close to the connecting bolt 11 , through which lubricating oil can be provided into the lubrication channel 63 , thereby lubricating the bearing 3 .

[0031] A clamping ring 4 is provided on the pulley 2, which can fix the position of the bearing 3 to prevent it from moving laterally on the connecting shaft 6. The clamping ring 4 is a spring clamping ring when in use.

[0032] Among them, the pulley 2 is symmetrically provided with a placement groove 21, the bearing 3 is placed in the placement groove 21, and a clamping groove 22 is provided in the placement groove 21. The clamping ring 4 is in the clamping groove 22. The clamping ring 4 can be stably fixed and installed through the clamping groove 22, and the clamping ring 4 can fix the position of the bearing 3.

[0033] When the present invention is in use, the pulley 2 is installed on the tower. When adjusting the tower gap, the adjusting screw 10 is rotated so that the end of the adjusting screw 10 is away from the positioning plate 8. Then the positioning plate 8 can be rotated, and the positioning plate 8 drives the connecting shaft 6 to rotate. When the connecting shaft 6 rotates, it rotates with the axis of the connecting end 61 as the turning point. Because the connecting end 61 and the pulley 2 are not on the same center of a circle, when the connecting shaft 6 rotates, the middle part of the connecting shaft 6 can drive the pulley 2 to rotate upward or downward, so that the height of the pulley 2 can be adjusted, and then the tower gap can be adjusted more conveniently, ensuring the stability of the tower structure and the operation efficiency.

[0034] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A pulley assembly, characterized in that: It includes a pulley base (1); A connecting shaft (6) mounted on the pulley base (1); A pulley (2) having a bearing (3) mounted therein, wherein the pulley (2) is mounted on a connecting shaft (6) via the bearing (3); The connecting shaft (6) is eccentrically provided with connecting ends (61) at both ends, and the two connecting ends (61) are respectively provided with shaft sleeves (7) and end covers (5), and the two connecting ends (61) are respectively connected to the pulley base (1) through the shaft sleeves (7) and the end covers (5).

2. A pulley assembly according to claim 1, characterized in that: A positioning end (62) is provided on one of the connecting ends (61), a positioning plate (8) is provided on the positioning end (62), and the positioning plate (8) is mounted on the pulley base (1) via an adjusting screw (10).

3. A pulley assembly according to claim 2, characterized in that: The positioning plate (8) is provided with a movable hole (81), the adjusting screw (10) passes through the movable hole (81) and is connected to the pulley base (1), and the positioning plate (8) is connected to the connecting end (61) with the positioning end (62) via a connecting screw (9).

4. A pulley assembly according to claim 3, characterized in that: The shaft sleeve (7) is provided on one side of the connecting end (61) with the positioning end (62), and the end cover (5) is provided with a connecting bolt (11), and the connecting bolt (11) passes through the end cover (5) and is connected to the connecting end (61) without the positioning end (62).

5. A pulley assembly according to claim 4, characterized in that: A lubrication channel (63) is provided on the connecting shaft (6), and an oil cup (12) is provided on one end of the lubrication channel (63) close to the connecting bolt (11).

6. A pulley assembly according to claim 5, characterized in that: The pulley (2) is provided with a clamping ring (4) for fixing the position of the bearing (3).

7. A pulley assembly according to claim 6, characterized in that: The pulley (2) is symmetrically provided with a placement groove (21), the bearing (3) is placed in the placement groove (21), a clamping groove (22) is provided in the placement groove (21), and the clamping ring (4) is located in the clamping groove (22).

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