Windproof ring for elevator cable

Abstract

The utility model discloses an elevator cable windproof ring, which belongs to the technical field of elevator accessories, and comprises a main body part connected with a tower and an opening and closing part for a cable pulley or a cage take-up frame to pass through, the opening and closing part comprises two oppositely arranged swing rods, and the swing rods are in running fit with the free end of the main body part through an elastic reset component; a balance adjusting head is arranged at the free end of the body part and used for adjusting the swing rod to the horizontal position. The opening and closing part composed of the two swing rods facilitates passing of the cable tackle, and after the cable tackle passes, the swing rods automatically reset under the action of the elastic reset assembly. As the service time is prolonged, the swing rod deviates from the horizontal state, and the swing rod can be adjusted to the horizontal position through the balance adjusting head. According to the utility model, the displacement of the cable can be limited, the cable can move at a preset position, and compared with a rubber strip type windproof ring, the rubber strip type windproof ring has the advantages of small temperature influence, good anti-fatigue performance, long service life and wide application range.

Description

Technical Field

[0001] This utility model belongs to the technical field of elevator accessories, and in particular relates to a windproof ring for elevator cables. Background Technology

[0002] Construction hoists used in open-air operations require a power unit to drive their cage up and down. However, the power cables supplying this unit are susceptible to wind damage during hoisting due to their height, causing them to shift significantly and easily become entangled in other components, leading to hoist malfunction or even serious damage. Therefore, it is necessary to install windproof rings at intervals along the guide rails to protect and guide the cables, ensuring safe operation of the hoist under certain wind conditions.

[0003] Currently, rubber strips (or polyurethane strips) are commonly used as the opening and closing mechanism for cable windproof rings installed on elevator frames, a practice that has continued for decades; hence, they are called rubber strip-type cable windproof rings. However, this type of rubber strip-type opening and closing windproof ring has the following drawbacks:

[0004] 1. The rubber strips have strict quality requirements. High rigidity is necessary to prevent the cable from being blown out of the wind ring. However, increased rigidity also increases the force exerted on the rubber strips as the cable carrier passes through the wind ring, causing greater swaying of the wind ring.

[0005] 2. Temperature has a significant impact on the performance of the rubber strip. In summer, under direct sunlight, the temperature of the rubber strip reaches 50-60℃, making it very soft and severely reducing its ability to prevent cables from running out of the coil. In winter, in Northeast China, at -20-30℃, the rubber strip becomes very hard, with poor elasticity and is prone to breakage.

[0006] 3. The rubber strip has poor fatigue resistance. When inserting and removing cables within the wind cage, the rubber strip deforms significantly, requiring a deformation angle of approximately 45° to slide over the cable pick-up frame and pulley frame of the hoist cage. Frequent and repeated bending of the rubber strip easily causes it to break. Once the rubber strip is damaged, the cable may escape to the outside of the wind cage, resulting in a scraping and breakage accident. Utility Model Content

[0007] The purpose of this utility model is to provide a windproof ring for elevator cables, which aims to solve the technical problems of existing rubber strip type cable windproof rings, such as the large rigidity of the rubber strip used for opening and closing, which leads to increased ring swaying, large temperature influence, and poor fatigue resistance.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0009] A windproof ring for elevator cables includes a main body connected to a tower and an opening / closing part for cable trolleys or cable lifting cages to pass through. The opening / closing part includes two opposing swing arms, which are rotatably engaged with the free end of the main body via an elastic reset assembly. The free end of the main body is provided with a balance adjustment head for adjusting the swing arms to a horizontal position.

[0010] Preferably, the free end of the swing arm is provided with a roller, which is connected to the free end of the swing arm via a wheel axle; the connecting end of the swing arm is rotatably engaged with the free end of the main body via a spindle, the connecting end of the swing arm is provided with a mounting hole that matches the spindle, and the end of the spindle is provided with a backstop plate.

[0011] Preferably, the elastic reset assembly includes a first torsion spring and a second torsion spring, which are respectively disposed on both sides of the connecting end of the rocker arm.

[0012] Preferably, both the first torsion spring and the second torsion spring are provided with positioning stops on their outer sides. The positioning stops are provided on the outer wall of the free end of the main body and are used to limit and fix the ends of the first torsion spring and the second torsion spring, respectively.

[0013] Preferably, the connecting end of the balance adjustment head is fixedly connected to the free end of the main body, and the free end of the balance adjustment head is provided with a plurality of adjustment holes, which can be used to install adjustment screws.

[0014] Preferably, the main body is a semi-enclosed U-shaped frame, and the closed end of the frame is semi-circular, square, or rectangular.

[0015] Preferably, the main body is made of Q235 steel; or the main body is made of round steel pipe or square steel pipe, and the outer surface of the main body is galvanized or powder coated.

[0016] Preferably, the opening and closing part is made of a round tube or strip steel.

[0017] Preferably, the cable windproof rings are in two sets, and the two sets of cable windproof rings are connected in series on the mounting bracket on one side of the tower.

[0018] Preferably, there are two sets of cable windproof rings, which are arranged side by side and staggered vertically.

[0019] The beneficial effects of adopting the above technical solution are as follows: Compared with the prior art, this utility model sets two swing rods in the opening and closing part of the cable windproof ring, allowing the cable trolley to pass between the two swing rods. After the cable trolley passes, the swing rods automatically reset under the action of the elastic reset component. As the usage time increases, the swing rods will deviate from the horizontal state, and the balance adjustment head at the free end of the main body can be used to adjust the swing rods to the horizontal position. This utility model can limit the displacement of the cable, allowing the cable to move in a predetermined position. Compared with rubber strip type cable windproof rings, this utility model is less affected by temperature, has better fatigue resistance, longer service life, and a wider range of applications. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of a windproof ring for a lifting cable provided in Embodiment 1 of this utility model;

[0022] Figure 2 yes Figure 1 Rear view of the windproof ring for the central cable;

[0023] Figure 3 This is an application state diagram of a hoist cable windproof ring provided in Embodiment 2 of this utility model;

[0024] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0025] Figure 5 yes Figure 3 Side view;

[0026] Figure 6 This is a schematic diagram of the cooperation between the main body and the swing arm in a windproof ring for a lifting cable provided in Embodiment 2 of this utility model;

[0027] Figure 7 This is an application state diagram of the cable windproof ring in Embodiment 2 of this utility model;

[0028] Figure 8 yes Figure 7 Top view;

[0029] Figure 9 yes Figure 8 The right view.

[0030] In the diagram: 00-Tower, 01-Cable trolley, 02-Mounting bracket; 100-Cable windproof ring, 1-Main body, 2-Opening and closing part, 3-Swing rod, 4-Balance adjustment head, 5-Roller, 6-Anti-back plate, 7-First torsion spring, 8-Second torsion spring, 9-Positioning stop, 10-Adjusting hole, 11-Adjusting screw, 12-Reinforcing plate, 13-Angle steel, 14-Rectangular frame, 15-Connecting rod, 16-Straight rod. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] See Figure 1 , 2 3.6. This utility model provides a cable windproof ring for a hoist. The cable windproof ring 100 includes a main body 1 connected to the tower 00 and an opening / closing part 2 for the cable trolley 01 or the cable lifting cage to pass through. The opening / closing part 2 includes two opposing swing rods 3. The swing rods 3 are rotatably engaged with the free end of the main body 1 through an elastic reset component. The free end of the main body 1 is provided with a balance adjustment head 4 for adjusting the swing rods 3 to a horizontal position. During the hoist's lifting process, the cable trolley can freely pass between the two swing rods. With prolonged use, the torsion spring of the elastic reset component will experience aging fatigue, and the friction force when the hoist rises and falls through the swing rods is different, causing the swing rods to deviate from a horizontal state. By rotating the balance adjustment head, the swing rods can be adjusted to a horizontal position, facilitating maintenance and adjustment. Furthermore, this cable windproof ring has a long service life and a wide range of applications.

[0033] As a preferred structure, such as Figure 1 , 2 As shown in Figure 6, the free end of the swing arm 3 is provided with a roller 5, which is connected to the free end of the swing arm 3 via an axle. The connecting end of the swing arm 3 is rotatably engaged with the free end of the main body 1 via a spindle. The connecting end of the swing arm 3 is provided with a mounting hole that matches the spindle, and the end of the spindle is provided with a backstop plate 6. The roller can be a nylon wheel or a small bearing, which can convert the sliding friction of the cable trolley or cable lifting cage during passage into rolling friction, reducing the resistance to passage. This structure of cable windproof ring is suitable for high-speed elevators.

[0034] When the hoist cage cable-raising frame stops precisely at the transition position of the swing arm, that is, at the torsional position of the swing arm, the advantage of the rolling friction of the small rollers comes into play when the hoist is restarted. This is because the hoist may be moving upwards or downwards. The pair of small rollers on the swing arm, in a rolling state, achieve perfect forward or reverse (ascending or descending) rolling friction through the hoist cage cable-raising frame structure and the cable trolley structure.

[0035] In addition, the anti-reverse plate 6 is fixed to the end of the spindle by locking bolts. In actual manufacturing, the spindle is welded and fixed to the end of the main body, the rocker arm mounting hole is fitted onto the spindle, the rocker arm uses the spindle as the rotation support point, and the end of the spindle is machined with internal threads that mate with the locking bolts, so as to facilitate fixing the anti-reverse plate to the end of the spindle.

[0036] In one specific embodiment of this utility model, such as Figure 1 As shown, both the first torsion spring 7 and the second torsion spring 8 are provided with positioning stops 9 on their outer sides. These stops are located on the outer wall of the free end of the main body 1 and are used to limit and fix the ends of the first torsion spring 7 and the second torsion spring 8, respectively. The positioning stops are U-shaped, allowing the ends of the torsion springs to be placed within them. The positioning stops 9 limit the rotation of the first torsion spring 7 and the second torsion spring 8 on both sides, fixing the rotational position of the swing arm and preventing it from deviating from its correct working position. After the cable trolley 01 or the cable lifting cage passes through, the two swing arms automatically reset under the action of the first torsion spring 7 and the second torsion spring 8, ensuring the cable remains within the space enclosed by the swing arms and the main body, effectively guaranteeing the cable's wind resistance.

[0037] When the mandrel is installed at the end of the anti-reverse plate, a fixed positioning stop 9 is welded to the outer wall of the mandrel to limit the end of the second torsion spring 8 on the outside.

[0038] Given that the swing arm 3 has its own weight, during use, one end of the swing arm is positioned while the other end experiences a downward force. Additionally, there are errors in the manufacturing and installation of the torsion spring, which will age and fatigue over time. Therefore, the friction force experienced by the elevator as it ascends and descends through the swing arm is different. A balance adjustment head 4 should be installed at the connection end of the swing arm. Figure 1 , 6 As shown, the connecting end of the balance adjustment head 4 is fixedly connected to the free end of the main body 1. The free end of the balance adjustment head 4 is provided with multiple adjustment holes 10, and adjustment screws 11 can be installed in the adjustment holes 10. In specific manufacturing, the length of the anti-reverse plate 6 is the same as that of the balance adjustment head 4, and the end of the anti-reverse plate 6 is provided with corresponding adjustment holes. In use, the adjustment screws 11 can pass through the adjustment holes on both the anti-reverse plate 6 and the balance adjustment head 4 simultaneously.

[0039] In the specific design, the main body 1 is a semi-enclosed U-shaped frame, and the closed end of the frame is semi-circular (e.g., Figure 1 , 2The illustrated embodiment 1) is square or rectangular. The main body 1 can be made of Q235 steel, which is more suitable for coastal and humid tropical regions. Alternatively, the main body 1 can be made of round or square steel tubing, and its outer surface can be galvanized or powder-coated to extend its service life. During installation, a reinforcing plate 12 is fixed to the outer wall of the straight section of the main body 1, and the reinforcing plate 12 is then fixed to the tower 00 by angle steel 13. Furthermore, the opening / closing part 2 is made of round tubing or steel strip.

[0040] Example 2: As Figure 3-8 As shown, the cable windproof rings 100 consist of two sets, which are connected in series on the mounting bracket 02 on one side of the tower 00. In a specific design, the cable windproof rings 100 are arranged in two sets, horizontally and vertically, with the two sets staggered. This structure allows for parallel connection of two rings or pairing, providing flexibility and convenience, and allowing cable trolleys to pass through.

[0041] In the specific manufacturing of Example 2, the mounting frame 02 includes a rectangular frame 14, a connecting rod 15, and a straight rod 16. Two sets of cable windproof rings are installed alternately on both sides of the straight rod 16. Each set of cable windproof rings contains two sets of cable windproof rings 100. The main body parts 1 on both sides of the two sets of cable windproof rings 100 are respectively installed on the front and rear frames of the two parallel rectangular frames 14. The main body part 1 of the rear set of cable windproof rings 100 extends to the outside of the frame and is connected to the end of the connecting rod 15. The adjacent rectangular frames 14, which are used to fix the two sets of cable windproof rings, are arranged vertically side by side and are fixed on the upper and lower sides of the straight rod 16. By using rectangular frames to connect the two sets of cable windproof rings, the required size distance can be achieved. This structure is suitable for double-cage double-cable trolleys.

[0042] In summary, this utility model has the advantages of simple and compact structure, low resistance, long service life, and wide application range. The roller at the free end of the swing arm reduces the resistance when the cable trolley 01 or cable lifting cage passes through. The torsion spring provides automatic reset, resulting in good wind protection for the cable. The balance adjustment head allows for easy adjustment of the swing arm's working position, effectively ensuring the cable's wind protection effect. Furthermore, compared to tension spring-type cable wind rings, this utility model occupies less space, has wider applications, and is more convenient to use.

[0043] Many specific details have been set forth in the above description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed above.

Claims

1. A windproof ring for elevator cables, characterized in that: The cable windproof ring includes a main body connected to the tower and an opening / closing part for the cable trolley or cable cage to pass through. The opening / closing part includes two opposing swing rods, which are rotatably engaged with the free end of the main body via an elastic reset assembly. The free end of each swing rod is provided with a roller, which is connected to the free end of the swing rod via an axle. The connecting end of each swing rod is rotatably engaged with the free end of the main body via a spindle. The connecting end of each swing rod is provided with a mounting hole that matches the spindle. The end of the spindle is provided with a backstop plate. The free end of the main body is provided with a balance adjustment head for adjusting the swing rod to a horizontal position.

2. The windproof ring for the elevator cable according to claim 1, characterized in that: The elastic reset assembly includes a first torsion spring and a second torsion spring, which are respectively disposed on both sides of the connecting end of the swing arm.

3. The windproof ring for the elevator cable according to claim 2, characterized in that: Both the first torsion spring and the second torsion spring are provided with positioning stops on their outer sides. The positioning stops are located on the outer wall of the free end of the main body and are used to limit and fix the ends of the first torsion spring and the second torsion spring, respectively.

4. The windproof ring for the elevator cable according to claim 1, characterized in that: The connecting end of the balance adjustment head is fixedly connected to the free end of the main body. The free end of the balance adjustment head is provided with multiple adjustment holes, and adjustment screws can be installed in the adjustment holes.

5. The windproof ring for the elevator cable according to claim 1, characterized in that: The main body is a semi-enclosed U-shaped frame, and the closed end of the frame is semi-circular, square, or rectangular.

6. The windproof ring for the elevator cable according to claim 5, characterized in that: The main body is made of Q235 steel; or the main body is made of round or square steel pipe, and the outer surface of the main body is galvanized or powder coated.

7. The windproof ring for the elevator cable according to claim 1, characterized in that: The opening and closing part is made of round tube or strip steel.

8. The elevator cable windproof ring according to any one of claims 1-6, characterized in that: The cable windproof rings are in two sets, and the two sets of cable windproof rings are connected in series on the mounting bracket on one side of the tower.

9. The windproof ring for the elevator cable according to claim 8, characterized in that: The cable windproof rings are in two sets, arranged side by side and staggered vertically.

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