Hoop structure for adjusting axial displacement limit of multi-rope friction type head sheave device

Abstract

The utility model provides a hoop structure for adjusting the axial displacement limit of a multi-rope friction type head sheave device, which belongs to the technical field of head sheave equipment, and comprises a main shaft, a fixed wheel, a traveling wheel and hoops which are of a circular ring structure, are fixedly arranged on the main shaft and are respectively positioned on the two sides of the fixed wheel or the traveling wheel; each fastener comprises a threaded column and a lifting pin arranged on the threaded column, a pin hole is formed in the position, corresponding to the lifting pin, of the main shaft, a threaded hole is further formed in the position, corresponding to the threaded column, of the hoop in a penetrating mode, and when the threaded column is screwed into the threaded hole, the lifting pin can be inserted into the pin hole; according to the head sheave device, the hoop can be fixed through the fastener, and then the position of the fixed wheel or the traveling wheel can be axially fixed through the hoop, so that the damage to the main shaft structure can be reduced, and the stability of the head sheave device during operation can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of sheave device technology, specifically to a clamp structure for adjusting the axial displacement limit of a multi-rope friction sheave device. Background Technology

[0002] In multi-rope friction sheave systems, the installation of the clamps is a crucial step, directly affecting the performance and service life of the sheave shaft. Traditional clamp installation methods require machining an annular groove on the main shaft to accommodate the clamps; however, this approach has several drawbacks.

[0003] First, machining the annular groove reduces the cross-sectional area of ​​the sheave shaft, potentially decreasing its strength and stiffness. Under high-speed rotation or heavy loads, the sheave shaft may experience significant deformation, affecting the machining accuracy of other parts. Furthermore, machining the annular groove alters the mass distribution of the sheave shaft, impacting its balance. If the imbalance exceeds the allowable range, the sheave shaft may vibrate at high speeds, affecting not only the machining quality of other parts but also threatening the stable operation of the entire equipment.

[0004] Secondly, the machining accuracy of the annular groove directly affects the installation position accuracy of other components on the shear shaft. For example, the installation position accuracy of components such as bearings will be affected by the machining accuracy of the annular groove, which in turn affects the rotational accuracy of the spindle. This will not only reduce the working efficiency of the equipment but may also increase the failure rate of the equipment.

[0005] Furthermore, the annular groove may alter the natural frequency of the shear shaft. If the operating frequency approaches the natural frequency, resonance may occur, causing serious damage to the equipment. In addition, the dynamic characteristics of the shear shaft will change after it is mounted on the annular groove, which may be transmitted to the main unit and cage through the steel wire ropes that apply the load on the shear assembly, thus affecting the overall dynamic performance of the equipment.

[0006] To address these issues, existing designs often resort to simply increasing the safety factor by thickening the diameter of the sheave shaft. While this approach improves the strength and rigidity of the sheave shaft to some extent, it makes the overall design bulky and cumbersome, increasing manufacturing costs and affecting the equipment's aesthetics. Furthermore, traditional two-piece clamps present numerous inconveniences during installation and disassembly, reducing the equipment's maintenance efficiency.

[0007] Therefore, there is an urgent need for a new type of clamp installation structure that can ensure the strength and rigidity of the sheave shaft, improve the balance and precision of the equipment, and reduce manufacturing costs and maintenance difficulty. Utility Model Content

[0008] In view of this, the present invention provides a clamp structure for adjusting the axial displacement limit of a multi-rope friction sheave device. The present invention can fix the clamp with fasteners, thereby fixing the position of the fixed wheel or the floating wheel axially, which can reduce damage to the main shaft structure and ensure the stability of the sheave device during operation.

[0009] To solve the above-mentioned technical problems, this utility model provides a clamp structure for adjusting the axial displacement limit of a multi-rope friction type sheave device, including a main shaft, a fixed wheel, and a floating wheel. The fixed wheel and the floating wheel are fixed on the main shaft, and the device also includes:

[0010] The clamps are circular structures that are fixedly mounted on the main shaft and located on both sides of the fixed wheel or the floating wheel. Two clamps can fix the position of one floating wheel.

[0011] Several fasteners, each fastener including a threaded post and a top pin set on the threaded post, the threaded post and the top pin are coaxially arranged, the top pin is provided with a pin hole on the main shaft, and the threaded post is also provided with a threaded hole through the clamp. When the threaded post is screwed into the threaded hole, the top pin can be inserted into the pin hole, thereby fixing the clamp on the main shaft.

[0012] Fasteners also include nuts, which can be screwed onto threaded posts to reinforce the position of the threaded posts.

[0013] Fasteners also include a tail post set on the threaded post, which facilitates the rotation of the threaded post, i.e., facilitates the application of force to the threaded post.

[0014] The tailstock has a square cross-section, which makes it easy to attach a wrench to the tailstock.

[0015] The top pin and the pin hole are connected by an interference fit.

[0016] The clamp and the spindle are connected by an interference fit.

[0017] Each clamp has at least three fasteners arranged in a circular array.

[0018] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0019] 1. Enhanced Structural Stability: The innovative combination of clamps and fasteners eliminates the need for machining annular grooves on the main shaft, effectively avoiding problems such as reduced sheave cross-sectional area, strength, and stiffness caused by annular groove machining. This not only improves the overall structural stability of the sheave assembly but also ensures its reliable operation under high-speed rotation or heavy loads.

[0020] 2. Optimized balance and precision: By avoiding the impact of annular groove machining on the mass distribution of the sheave shaft, the excellent balance of the sheave shaft is maintained. Furthermore, since there is no need to rely on annular grooves to position other components, this invention improves the installation position accuracy of the spindle and other key components, ensuring the rotational accuracy and working efficiency of the equipment.

[0021] 3. Reduced manufacturing costs and maintenance difficulty: The new clamp structure eliminates the need for complex spindle machining processes, simplifying the manufacturing process and reducing manufacturing costs. Simultaneously, the fastener design makes clamp installation and removal easier and faster, significantly improving equipment maintenance efficiency and reducing maintenance costs.

[0022] 4. Improved Dynamic Performance: By reducing damage to the main shaft structure, this invention helps maintain the stability of the sheave shaft's natural frequency, avoiding equipment damage caused by resonance. Furthermore, this design helps maintain the overall dynamic performance of the equipment, improving its safety and reliability.

[0023] 5. Enhanced Flexibility and Adaptability: The fastener design allows for adjustment of the clamp tightness according to actual conditions, thus providing additional flexibility and adaptability. This design ensures that the sheave assembly maintains optimal operating condition under various working conditions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a clamp structure for adjusting the axial displacement limit of a multi-rope friction sheave device according to the present invention.

[0025] Figure 2 This is a structural schematic diagram of a cross-sectional view of the present invention;

[0026] Figure 3 This utility model Figure 2 Schematic diagram of the structure at point A;

[0027] Figure 4 This is a structural schematic diagram of the side view of the clamp of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Fixed wheels;

[0030] 20. Cruise ship;

[0031] 30. Clamp; 31. Threaded hole;

[0032] 40. Spindle; 41. Pin hole;

[0033] 50. Fasteners; 51. Threaded post; 52. Top pin; 53. Tail post; 54. Nut. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0035] A clamp structure 30 for adjusting the axial displacement limit of a multi-rope friction sheave device, such as Figure 1 , 2 As shown: It includes a main shaft 40, on which a fixed wheel 10 and three movable wheels 20 are provided. The fixed wheel 10 is located on the side of the three movable wheels 20. The fixed wheel 10 is fixedly connected to the main shaft 40, and the three movable wheels 20 are movably connected to the main shaft 40. That is, the main shaft 40 can drive the fixed wheel 10 to rotate synchronously, while the three movable wheels 20 rotate relative to each other on the main shaft 40.

[0036] Specifically, the main shaft 40 is provided with 5 clamps 30, which are arranged in a linear array. The fixed wheel 10 and 3 floating wheels 20 are located between the 5 clamps 30, so that the clamps 30 can axially limit the fixed wheel 10 and the floating wheels 20, thus preventing the fixed wheel 10 or the floating wheels 20 from moving along the axis of the main shaft 40 when rotating.

[0037] Specifically, the clamp 30 is a ring-shaped structure located on both sides of the fixed wheel 10 or the floating wheel 20. The clamp 30 is fixed to the main shaft 40 by interference fit. The clamp 30 is also provided with at least three fasteners 50, which are arranged in a ring array. Each fastener 50 includes a threaded post 51 and a top pin 52 coaxially connected to the threaded post 51. The top pin 52 is also provided with a pin hole 41 on the outer surface of the main shaft 40, and the threaded post 51 is also provided with a threaded hole 31 through the clamp 30. That is, the threaded post 51 can be screwed into the threaded hole 31. At this time, the top pin 52 is located in the pin hole 41. Thus, the clamp 30 can be fixed to the main shaft 40 by the fasteners 50, so that the clamp 30 can axially limit the fixed wheel 10 or the floating wheel 20.

[0038] Furthermore, fastener 50 also includes nut 54, such as Figure 3 , 4 As shown: Nut 54 can be screwed onto threaded post 51 until the end of nut 54 abuts against the outer surface of clamp 30, thereby further reinforcing the position of threaded post 51 through nut 54, thus indirectly ensuring the stability of clamp 30 on spindle 40.

[0039] Furthermore, the fastener 50 also includes a tail post 53 disposed at the end of the threaded post 51. The tail post 53 is located at the end of the threaded post 51 away from the top pin 52. That is, the tail post 53 facilitates the application of force to the threaded post 51, which makes it easy to drive the threaded post 51 to rotate. Specifically, the tail post 53 is designed as a cuboid structure, which makes it easy to embed a wrench in the tail post 53, thereby making it easy to fix the fastener 50 to the clamp 30 and the main shaft 40 by using a wrench.

[0040] It is worth mentioning that the clamp 30 and the main shaft 40 are connected by an interference fit, and the top pin 52 and the pin hole 41 are connected by an interference fit, which can further fix the position of the clamp 30, thereby ensuring that the sheave device operates more stably.

[0041] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A clamp structure for adjusting the axial displacement limit of a multi-rope friction sheave device, comprising a main shaft (40), a fixed wheel (10), and a floating wheel (20), characterized in that: Also includes; The clamp (30) is a ring-shaped structure fixedly mounted on the main shaft (40) and located on both sides of the fixed wheel (10) or the floating wheel (20); Several fasteners (50), each fastener (50) includes a threaded post (51) and a top pin (52) provided on the threaded post (51). The top pin (52) is provided with a pin hole (41) on the spindle (40). The threaded post (51) is also provided with a threaded hole (31) through the clamp (30). When the threaded post (51) is screwed into the threaded hole (31), the top pin (52) can be inserted into the pin hole (41).

2. The clamp structure for adjusting the axial displacement limit of a multi-rope friction sheave device as described in claim 1, characterized in that: The fastener (50) also includes a nut (54) that can be screwed onto a threaded post (51).

3. A clamp structure for adjusting the axial displacement limit of a multi-rope friction sheave device as described in claim 1 or 2, characterized in that: The fastener (50) also includes a tail post (53) disposed on the threaded post (51), which facilitates the rotation of the threaded post.

4. The clamp structure for adjusting the axial displacement limit of a multi-rope friction sheave device as described in claim 3, characterized in that: The tail column (53) has a square cross-section.

5. The clamp structure for adjusting the axial displacement limit of a multi-rope friction sheave device as described in claim 1, characterized in that: The top pin (52) and the pin hole (41) are connected by an interference fit.

6. The clamp structure for adjusting the axial displacement limit of a multi-rope friction sheave device as described in claim 1, characterized in that: The clamp (30) and the main shaft (40) are connected by an interference fit.

7. The clamp structure for adjusting the axial displacement limit of a multi-rope friction sheave device as described in claim 1, characterized in that: Each clamp (30) has at least three fasteners (50).

Images