Single-wheel net sealing pulley

Abstract

The utility model discloses a single-wheel net sealing pulley which comprises a net sealing pulley mechanism and is characterized in that the net sealing pulley mechanism is installed on two groups of main ropes, the two groups of main ropes are arranged in parallel, a net rope is arranged between the two main ropes, an insulating supporting rod is further arranged between the two main ropes, and the insulating supporting rod is connected with the net sealing pulley mechanism. The net rope and the insulating supporting rod are connected with the main rope through a net blocking pulley mechanism, and one end of the net blocking pulley mechanism is connected with a connecting rope. The net sealing pulley is small in size, light in weight, low in cost, convenient to carry and capable of well adapting to different capping net structures, and standardized capping nets of different sizes are formed. The rotating part adopts the design that the miniature bearing is matched with the MC nylon pulley, the friction coefficient is small, the rotating precision is high, the pulley groove is in surface contact with the main rope, the resistance of the pulley on the main rope in the walking process and the abrasion to the main rope can be reduced, the main rope is effectively protected, and the construction safety is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission line engineering construction, in particular to a single-wheel net-sealing pulley. Background Art

[0002] With the rapid expansion of my country's high-speed railway network, the construction of new transmission lines and the maintenance of existing lines are increasingly involving the crossing of other transmission lines, high-speed railways, and other electrified railways. This necessitates effective safety measures to protect the safety of the railway power supply network, ensure power supply stability, and avoid power outages and operational disruptions. A commonly used approach in the industry is to erect spanning frames and safety nets. Specifically, a safety net of a certain width is erected at a safe distance above the lines and facilities being crossed. This net is strong and impact-resistant enough to reliably support the conductors in the event of a conductor accidentally falling during the construction process, effectively protecting the objects being crossed.

[0003] Current net-sealing technology, tools, and construction methods lack unified standards. Despite years of continuous exploration by many domestic companies, existing pulleys have drawbacks, such as being long and heavy, lacking loops and poorly designed, and making it difficult to connect the front, back, left, and right ropes. Therefore, those skilled in the art have developed a single-wheel net-sealing pulley to address the issues raised in the background art. Utility Model Content

[0004] The purpose of the utility model is to provide a single-wheel net closing pulley to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A single-wheel net-closing pulley comprises a net-closing pulley mechanism, wherein the net-closing pulley mechanism is installed on a main rope, wherein two groups of main ropes are provided, and the two groups of main ropes are arranged in parallel, a net rope is provided between the two main ropes, and an insulating strut is also provided between the two main ropes, the net rope and the insulating strut are connected to the main rope via the net-closing pulley mechanism, one end of the net-closing pulley mechanism is connected to a connecting rope, and one end of the two outer net-closing pulley mechanisms is respectively provided with a net-collecting rope and a net-pulling rope.

[0007] As a further solution of the present invention: the net closing pulley mechanism is connected to the net rope and the insulating support rod through a safety buckle.

[0008] As a further solution of the present invention: the net sealing pulley mechanism includes a bracket, a pulley is provided inside the bracket, and a lock is provided on one side of the bracket, a pulley shaft passes through the center of the pulley, a spacer is provided on the outside of the pulley shaft, and one end of the pulley shaft is fixed by a lock nut, a second flat washer is provided between the lock nut and the bracket, a rolling bearing is provided on the outside of the spacer, a loose-leaf is provided on one side of the bracket near the bottom of the lock, and a connecting rope pull plate is provided at the lower end of the bracket, and the connecting rope pull plate and the bracket are fixed by a hexagonal nut, a first flat washer is provided between the hexagonal nut and the connecting rope pull plate, and a net rope hanging ring is provided at the lower end of the connecting rope pull plate.

[0009] As a further solution of the present invention: the lock includes a paddle, a fixing sleeve and a pin, the lower end of the paddle is provided with a fixing sleeve, and the lower end of the fixing sleeve is provided with a pin.

[0010] As a further solution of the present invention: the paddle and the pin are an integrated structure, fixed and welded to the bracket via a fixing sleeve, and a spring is provided inside the fixing sleeve.

[0011] As a further solution of the present invention: both ends of the connecting rope pull plate are provided with connecting holes. As a further solution of the present invention: one end of the loose leaf is provided with a loose leaf rotating shaft, and a circular hole is opened in the middle of the loose leaf.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The net-sealing pulley is small in size, light in weight, low in cost, and easy to carry. It can adapt to different capping net structures and form capping nets of different sizes and standards.

[0014] 2. The rotating part adopts the design of miniature bearing and MC nylon pulley, which has low friction coefficient and high rotation precision. The pulley groove and the main rope are in surface contact, which can reduce the resistance and wear of the main rope during the movement of the pulley, effectively protect the main rope and ensure construction safety.

[0015] 3. The side of the pulley is designed with an opening and closing hinge structure, which makes it easy to hook the pulley into and out of the main rope without having to pass the main rope in advance. The width of the net can be dynamically increased according to actual needs, flexibly adapting to different application scenarios and greatly improving work efficiency.

[0016] 4. The pulley is not prone to deflection, so that the overall force of the net sealing device is balanced, uniform, stable and reliable during the pulling process;

[0017] 5. The design features a connecting rope pull plate and net rope hanging rings for easy connection of front, rear, left, and right ropes. The front and rear connecting ropes can dynamically adapt to the arc shape of the main rope, so that the center of force is always on the same arc and parallel to the main rope. The pulley is less likely to deflect, ensuring that the overall force of the net closing device is balanced, uniform, stable and reliable during the pulling process.

[0018] 6. The side hinges are opened and closed with a highly reliable self-resetting elastic lock, which provides better safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a single-wheel net-sealing pulley;

[0020] Figure 2 This is a schematic diagram of the installation structure of a net-sealing pulley mechanism in a single-wheel net-sealing pulley;

[0021] Figure 3 This is a structural diagram of a net-sealing pulley mechanism in a single-wheel net-sealing pulley; Figure 4 It is a schematic cross-sectional structure diagram of a net-sealing pulley mechanism in a single-wheel net-sealing pulley; Figure 5 This is an exploded view of a net-sealing pulley mechanism in a single-wheel net-sealing pulley; Figure 6 This is a schematic diagram of the structure of a lock in a single-wheel net-sealing pulley;

[0022] Figure 7 This is a schematic diagram of the structure of a net-sealing pulley mechanism in a single-wheel net-sealing pulley in use;

[0023] Figure 8 This is a schematic diagram of a single-wheel net-sealing block in the lifted and locked state; Figure 9 This is a schematic diagram of a single-wheel net-sealing block in an open-leaf state;

[0024] Figure 10 This is a schematic diagram of a single-wheel net-sealing block in the state of being hooked onto the main rope;

[0025] Figure 11 The figure is a schematic diagram of the state of the closed hinge lock of a single-wheel net sealing pulley being reset.

[0026] In the figure: 11. Main rope; 22. Net closing pulley mechanism; 33. Net rope; 44. Insulating strut; 55. Net collecting rope; 66. Connecting rope; 77. Net pulling rope; 1. Bracket; 2. Lock; 3. Pulley; 4. Pulley shaft; 5. Spacer; 6. Rolling bearing; 7. Loose-leaf; 8. Loose-leaf rotating shaft; 9. Connecting rope pull plate; 10. Net rope hanging ring; 101. Hexagonal nut; 12. First flat washer; 13. Anti-loosening nut; 14. Second flat washer; 15. Safety buckle; 16. Pick; 17. Fixing sleeve; 18. Pin shaft. DETAILED DESCRIPTION

[0027] See also Figures 1 to 11 In an embodiment of the present invention, a single-wheel net-closing pulley includes a net-closing pulley mechanism 22, which is installed on the main rope 11. There are two groups of main ropes 11, and the two groups of main ropes 11 are arranged in parallel. A net rope 33 is arranged between the two main ropes 11, and an insulating strut 44 is also arranged between the two main ropes 11. The net rope 33 and the insulating strut 44 are connected to the main rope 11 through the net-closing pulley mechanism 22, one end of the net-closing pulley mechanism 22 is connected to the connecting rope 66, and one end of the two outer net-closing pulley mechanisms 22 are respectively provided with a net-collecting rope 55 and a net-pulling rope 77, and the net-closing pulley mechanism 22 is connected to the net rope 33 and the insulating strut 44 through a safety buckle 15.

[0028] The net-sealing pulley mechanism 22 includes a bracket 1, shaped like a hook with four curved lines. It is constructed from a long, rectangular strip of high-strength thin steel plate, formed through a sheet metal bending and hemming process. The bracket's steel plate width is equal to the pulley's outer diameter, effectively protecting it from deformation and damage caused by external forces during storage, transportation, and construction. A concentric circular hole is provided in the center of the bracket for mounting the pulley shaft, providing support. A circular hole is provided in the center of the bottom plane for mounting the connecting rope pull plate and the net rope hook. The sides of the bracket are machined into hems, commonly used for loose-leaf leaf hinges, for mounting the leaf hinges and hinge shafts. To increase strength, the rear end of the frill is spot welded to the bracket steel plate base after forming. The middle position of the top of the front wide surface of the bracket is also welded to the lock buckle to provide support. The edges of the steel plate on the inside of the bracket are processed with arc processing technology. Even if the pulley deflects, it will not cut the main rope, ensuring the safety of the main rope. The main function of the entire bracket is to provide a skeleton support for the key components of the pulley, giving it sufficient strength. The interior of the bracket 1 is equipped with a pulley 3, which is made of MC nylon. The inner hole is machined with stepped holes on both sides for installing rolling bearings. The outer edge is machined with a groove. The size of the groove is determined by the diameter of the main rope, allowing the pulley to roll smoothly on the main rope. Its function is to install rolling bearings and support the entire pulley to roll on the main rope. A lock buckle 2 is set on one side of the bracket 1. The lock buckle 2 has a stepped cylindrical shape and consists of a paddle 16, a fixing sleeve 17, a pin 18 and its internal spring mechanism. The paddle and pin are fixed together and are produced by a professional manufacturer using high-quality steel and welded to the bracket. Its function is to limit the rotation of the hinge once it is in place, providing a safe and reliable locking mechanism. During operation, the operator uses their thumb and index finger to lift the paddle and the pin a certain distance, allowing the hinge to rotate freely around the hinge's pivot. After the pulley is hooked onto the main rope and in place, the paddle and the pin are released, allowing the internal spring to automatically reset them. This component is manufactured by a professional manufacturer, and batch processing ensures quality and helps reduce costs. The center of the pulley 3 is penetrated by a pulley shaft 4, which is surrounded by a spacer sleeve 5. The spacer sleeve 5 is made of standard steel and is cylindrical with a central through-hole. It is loosely mounted on the middle section of the pulley shaft, between two rolling bearings. Its function is to press the inner races of the two bearings against each other via the spacer sleeve, thus fixing the relative position of the two bearings and preventing axial movement, only rotational movement. One end of the pulley shaft 4 is fixed by a locknut 13, and a second flat washer 14 is provided between the locknut 13 and the bracket 1. A rolling bearing 6 is sleeved on the outside of the spacer sleeve 5. A loose-leaf 7 is provided on one side of the bracket 1, below the lock buckle 2. The loose-leaf 7 can rotate around the loose-leaf axis to facilitate the insertion and removal of the main rope 1 into and out of the pulley. It is also used for installing other components of the pulley. It is made of high-strength thin steel plate. One end is processed into a frill commonly used for loose-leaf.To increase strength, the rear end of the frill is spot-welded to the bracket steel plate base after it is formed. The circular frill is connected to the bracket and the hinge shaft, respectively, allowing the hinge to rotate freely around the hinge shaft. A circular hole is opened in the middle of the steel plate. The gap between the hole and the pulley shaft head is only about 0.5 mm, which is enough to ensure that the inner wall of the circular hole does not interfere with the pulley head during the hinge rotation around the hinge shaft. The function of this component is to allow construction workers to easily insert or remove the pulley from the main rope, improve work efficiency, facilitate the expansion of the sealing net width, and share half of the load of the pulley, so that the forces on both sides of the bracket are balanced. A connecting rope pull plate 9 is provided at the lower end of the bracket 1, and the connecting rope pull plate 9 is fixed to the bracket 1 by a hexagonal nut 101. A first flat washer 12 is provided between the hexagonal nut 101 and the connecting rope pull plate 9.

[0029] The lock buckle 2 includes a paddle 16, a fixing sleeve 17 and a pin 18. The lower end of the paddle 16 is provided with a fixing sleeve 17, and the lower end of the fixing sleeve 17 is provided with a pin 18. The paddle 16 and the pin 18 are an integrated structure, which is fixed and welded to the bracket 1 through the fixing sleeve 17. A spring is provided inside the fixing sleeve 17, which can be pulled up by hand to make a linear motion and can be reset automatically when the hand is released. It is used to prevent the loose-leaf 7 from opening by itself during the operation of the pulley, causing the pulley to fall, thereby ensuring the normal operation of the pulley.

[0030] A net rope hanging ring 10 is provided at the lower end of the connecting rope pull plate 9. The net rope hanging ring 10 has a screw at one end and is installed at the bottom of the bracket for connecting the net rope or insulating support rod. Both ends of the connecting rope pull plate 9 are provided with connection holes, and hanging holes are opened at both ends and in the middle. It is installed on the inner side of the bottom of the bracket 1 for convenient connection of the front and rear connecting ropes 66.

[0031] The working principle of this pulley is to use a pulley in conjunction with a rolling bearing to convert the linear motion of the net pulling or collecting process into the circular motion of the pulley 3, thereby effectively reducing the pulling resistance. The use of a self-resetting lock buckle in conjunction with a loose-leaf 7 makes the installation and removal of the pulley very convenient, safe and reliable. The connecting rope pull plate 9 and the net rope hanging ring 10 can easily connect the front and rear connecting ropes 66 and the connecting net rope 33 or the insulating support rod 44. When using, first manually pull the lock buckle 2 to the top and open the loose-leaf 7. At this time, the pulley can be hung on the main rope 11, and then the loose-leaf 7 is covered and the lock buckle is reset to complete the installation. At this time, the pulley can move freely on the main rope 1, and the connecting rope 66, net rope 33 and other ropes can be installed at this time; repeat the above steps to remove the net.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A single-wheel net-sealing pulley, comprising a net-sealing pulley mechanism (22), characterized in that: The net-sealing pulley mechanism (22) is installed on the main rope (11). The main rope (11) is provided with two groups, and the two groups of main ropes (11) are arranged in parallel. A net rope (33) is provided between the two main ropes (11), and an insulating support rod (44) is also provided between the two main ropes (11). The net rope (33) and the insulating support rod (44) are connected to the main rope (11) through the net-sealing pulley mechanism (22). One end of the net-sealing pulley mechanism (22) is connected to a connecting rope (66), and one end of the two outer net-sealing pulley mechanisms (22) is respectively provided with a net-collecting rope (55) and a net-pulling rope (77).

2. A single-wheel net-sealing pulley according to claim 1, characterized in that: The net-sealing pulley mechanism (22), the net rope (33), and the insulating support rod (44) are connected via a safety buckle (15).

3. The single-wheel net-sealing pulley according to claim 1, characterized in that: The net-sealing pulley mechanism (22) comprises a bracket (1), a pulley (3) is provided inside the bracket (1), and a lock buckle (2) is provided on one side of the bracket (1), a pulley shaft (4) is passed through the center of the pulley (3), a spacer (5) is provided on the outside of the pulley shaft (4), and one end of the pulley shaft (4) is fixed by a locking nut (13), a second flat washer (14) is provided between the locking nut (13) and the bracket (1), a rolling bearing (6) is provided on the outside of the spacer (5), a hinge (7) is provided on one side of the bracket (1) at a position below the lock buckle (2), and a connecting rope pull plate (9) is provided at the lower end of the bracket (1), and the connecting rope pull plate (9) and the bracket (1) are fixed by a hexagonal nut (101), a first flat washer (12) is provided between the hexagonal nut (101) and the connecting rope pull plate (9), and a net rope hanging ring (10) is provided at the lower end of the connecting rope pull plate (9).

4. The single-wheel net-sealing pulley according to claim 3, characterized in that: The lock buckle (2) comprises a paddle (16), a fixing sleeve (17) and a pin (18); the fixing sleeve (17) is provided at the lower end of the paddle (16); and the pin (18) is provided at the lower end of the fixing sleeve (17).

5. The single-wheel net-sealing pulley according to claim 4, characterized in that: The paddle (16) and the pin (18) are an integrated structure and are fixedly welded to the bracket (1) via a fixing sleeve (17), wherein a spring is provided inside the fixing sleeve (17).

6. The single-wheel net-sealing pulley according to claim 3, characterized in that: Both ends of the connecting rope pull plate (9) are provided with connecting holes.

7. The single-wheel net-sealing tackle according to claim 3, characterized in that: A loose-leaf rotating shaft (8) is provided at one end of the loose-leaf (7), and a circular hole is opened in the middle of the loose-leaf (7).

Images