Connecting structure of high-voltage brake pull-rod

Abstract

The utility model discloses a connecting structure of a high-voltage brake pull-rod, and aims to provide an efficient, safe and reliable connecting structure of the high-voltage brake pull-rod, the connecting structure of the high-voltage brake pull-rod is characterized by comprising a connecting pipe and a brake pull-rod which are connected in sequence, one end of the connecting pipe is provided with an opening and is used for accommodating a connector at the end part of the brake pull-rod; an elastic clamping layer is arranged in the connector, the connector is sleeved with a fixing sleeve ring, the fixing sleeve ring is provided with a plurality of locking assemblies, and the locking assemblies are evenly distributed in the radial direction of the connector. The locking assembly comprises a locking bolt and an arc-shaped plate, the locking bolt is in threaded connection with the fixing sleeve ring, the arc-shaped plate is fixed to one end of the locking bolt and arranged in the fixing sleeve ring, the arc-shaped plate is matched with the outer wall of the connector, and anti-skid lines are arranged on the side, abutting against the connector, of the arc-shaped plate.

Description

Technical Field

[0001] This utility model relates to the technical field of a switch rod connection structure, and more specifically, it relates to a connection structure for a high-voltage switch rod. Background Technology

[0002] In the past, the connection structure of switch levers was often quite simple, mostly using a single nesting or welding method. For example, after long-term use, simple nesting connections are prone to loosening due to the frequent external forces during switch operation. This not only affects the accuracy of switch operation but may also cause the switch lever to accidentally fall off during operation, posing a serious safety hazard to the operator.

[0003] Moreover, traditional connection methods typically require specialized tools for installing and removing switch arms, making the process cumbersome, complex, and time-consuming. Especially in emergency repair situations where every second is crucial, inefficient connection methods can delay repairs, further expanding the impact of power outages and posing a significant challenge to the stability and reliability of power supply. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a connection structure for a high-efficiency, safe and reliable high-voltage switch rod.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a connection structure for a high-voltage switch rod, comprising a connecting pipe and a switch rod connected in sequence, one end of the connecting pipe having an opening for accommodating a connector at the end of the switch rod, the connector having an elastic clamping layer inside, and a fixing collar being fitted over the connector, the fixing collar having a plurality of locking components evenly distributed along the radial direction of the connector, the locking components including a locking bolt threadedly connected to the fixing collar and an arc-shaped plate fixed to one end of the locking bolt and disposed within the fixing collar, the arc-shaped plate being adapted to the outer wall of the connector, and the side of the arc-shaped plate that abuts against the connector having anti-slip texture.

[0006] The present invention is further configured such that: the opening end of the connector is in the shape of a horn, and the edge of the horn-shaped opening is chamfered.

[0007] The present invention is further configured such that: the elastic clamping layer is made of wear-resistant rubber material with spiral protrusions, and the length of the fixing collar is 0.5-0.8 times the length of the connector.

[0008] The present invention is further configured such that: the depth of the connector is 1.2-1.5 times the diameter of the lever rod, and the inner diameter of the connector opening in the fully open state is not less than 1.2 times the outer diameter of the lever rod.

[0009] The present invention is further configured such that the connecting pipe and the fixing ring are made of high-strength insulating material.

[0010] The present invention is further provided with a rotating handle at the end of the locking bolt for easy operation.

[0011] The beneficial effects of this utility model are:

[0012] 1. One end of the connecting tube is open to accommodate the connector of the pull rod end. The connector has an elastic clamping layer inside, which can initially clamp and fix the inserted pull rod end. Combined with a fixing collar and evenly distributed locking components, which are evenly distributed along the radial direction of the connector, the force is relatively balanced in all directions when fixing the pull rod. Tightening the locking bolts ensures that the arc-shaped plate and the outer wall of the connector are in close contact. Multiple locking components apply force from different directions, firmly fixing the pull rod to the connecting tube, effectively preventing loosening or falling off during use, ensuring safety. The side of the arc-shaped plate that contacts the connector has anti-slip texture, further enhancing the friction between the connector and the fixing collar. The locking components use locking bolts that are threaded to the fixing collar. When installing the pull rod, simply insert the pull rod end into the connector and then tighten each locking bolt in sequence to complete the fixation. When disassembly is required, loosening the locking bolts in the opposite direction allows the pull rod to be easily removed, facilitating maintenance and replacement.

[0013] 2. The connector's open end has a flared structure with chamfered edges. This structure provides excellent guidance, making it easier to smoothly insert the switch rod end into the connector during installation. This improves installation convenience and reduces the probability of damage to the switch rod and connector during installation. The elastic clamping layer is made of wear-resistant rubber with spiral protrusions. The rubber material itself has a certain degree of elasticity, which can better fit and clamp the switch rod. The spiral protrusions further increase the friction with the switch rod surface, making the switch rod more securely fixed in the connector. When the length of the retaining collar is less than 0.5 times the length of the connector, the connection strength decreases, and the effective fixation of the connector and the lever cannot be guaranteed. When the length of the retaining collar is greater than 0.8 times the length of the connector, the entire connection structure becomes too bulky, increasing manufacturing costs. Therefore, the optimal length of the retaining collar is 0.5-0.8 times the length of the connector, which ensures that the retaining collar can fully perform its fixing function without making the entire connection structure too bulky, resulting in a more compact and reasonable overall connection structure.

[0014] 3. When the inner diameter of the connector opening in its fully open state is not less than 1.2 times the outer diameter of the lever arm, the connection structure can adapt to lever arms with various outer diameters, making it more versatile. In practical applications, when faced with lever arms of different sizes, there is no need to frequently replace the connector, making it more convenient and flexible to use. When the depth of the connector is less than 1.2 times the diameter of the lever arm, there is insufficient contact length, which reduces the strength of the connection structure and increases the risk of the lever arm coming out of the connector. When the depth of the connector is greater than 1.5 times the diameter of the lever arm, the excessive depth affects installation efficiency and greatly increases manufacturing costs. Therefore, when the depth of the connector is 1.2-1.5 times the diameter of the lever arm, sufficient depth allows the end of the lever arm to be fully inserted. Combined with the elastic clamping layer and external fixing collar, the lever arm has sufficient contact length within the connector, ensuring the stability of the connection, effectively dispersing the pulling force and other external forces generated during the lever operation, reducing the risk of the lever arm coming out of the connector, and ensuring safe use.

[0015] 4. The connecting pipe and fixing ring are made of high-strength insulating material. In high-voltage environments such as high-voltage switch-off operations, they can effectively block current and prevent electric shock to operators, greatly improving operational safety and allowing users to perform switch-off related operations with peace of mind. The locking bolt end is equipped with an easy-to-operate rotating handle. When installing or removing the switch rod, and when it is necessary to tighten or loosen the locking bolt, the operator can more easily and effortlessly hold the rotating handle to operate without the need for additional tools, improving operational efficiency and making the entire connection structure more convenient to use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 A schematic diagram of the connection structure for the fixed ring sleeve;

[0018] Figure 1-2 Reference numerals: 1. Connecting pipe; 2. Pulling lever; 3. Connecting head; 4. Elastic clamping layer; 5. Fixing ring; 6. Locking bolt; 7. Curved plate; 8. Opening; 9. Rotating handle. Detailed Implementation

[0019] Reference Figures 1 to 2 The embodiments of this utility model will be further described below.

[0020] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0021] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0022] Figures 1 to 2 The diagram illustrates a connection structure for a high-voltage switch rod, comprising a connecting pipe 1 and a switch rod 2 connected sequentially. One end of the connecting pipe 1 has an opening 8 for accommodating a connector 3 at the end of the switch rod 2. The connector 3 contains an elastic clamping layer 4, which provides initial clamping and fixing of the inserted switch rod 2. A fixing collar 5 is fitted over the connector 3. The fixing collar 5 has several locking components evenly distributed radially along the connector 3. Each locking component includes a locking bolt 6 threaded to the fixing collar and an arc-shaped plate 7 fixed to one end of the locking bolt 6 and disposed within the fixing collar 5. When fixing the switch rod 2, the force is relatively balanced in all directions. Tightening the locking bolt 6 causes the arc-shaped plate 7 to engage with the connecting pipe 1. The outer wall of the head 3 is tightly pressed against the connecting head 3, and multiple locking components apply force from different directions to firmly fix the lever 2 to the connecting pipe 1, effectively preventing the lever 2 from loosening or falling off during use and ensuring safe use. The arc-shaped plate 7 is adapted to the outer wall of the connecting head 3, and the locking components adopt the form of locking bolts 6 that are threadedly connected to the fixing collar. When installing the lever 2, simply insert the end of the lever 2 into the connecting head 3 and then tighten each locking bolt 6 in sequence to complete the fixation. When disassembly is required, the lever 2 can be easily removed by loosening the locking bolts 6 in the opposite direction, which is convenient for maintenance, replacement and other operations. The side of the arc-shaped plate 7 that abuts against the connecting head 3 is provided with anti-slip texture, which further enhances the friction between the connecting head 3 and the fixing collar.

[0023] The opening 8 of the connector 3 has a flared structure, and the edge of the flared opening 8 is chamfered. This structure can play a good guiding role, making it easier to smoothly insert the end of the switch rod 2 into the connector 3 when installing it. This improves the convenience of installation and reduces the probability of damage to the switch rod 2 and connector 3 during the installation process.

[0024] The elastic clamping layer 4 is made of wear-resistant rubber material with spiral protrusions. The rubber material itself has a certain elasticity, which can better fit and clamp the lever 2. The spiral protrusions further increase the friction with the surface of the lever 2, making the lever 2 more securely fixed in the connector 3.

[0025] When the length of the fixing collar is less than 0.5 times the length of the connector 3, the connection strength is reduced, and the effective fixing of the connector 3 and the lever 2 cannot be guaranteed. When the length of the fixing collar is greater than 0.8 times the length of the connector 3, the entire connection structure becomes too bulky, increasing manufacturing costs. Therefore, the optimal length of the fixing collar is 0.5-0.8 times the length of the connector 3, which ensures that the fixing collar can fully perform its fixing function without making the entire connection structure too bulky, resulting in a more compact and reasonable overall connection structure.

[0026] When the inner diameter of the opening 8 of the connector 3 in the fully open state is not less than 1.2 times the outer diameter of the lever 2, the connection structure can be adapted to levers 2 with different outer diameters, making it more versatile. In practical applications, when faced with levers 2 of different sizes, there is no need to frequently replace the connector 3, making it more convenient and flexible to use.

[0027] When the depth of connector 3 is less than 1.2 times the diameter of the lever 2, there is insufficient contact length, which reduces the strength of the connection structure and increases the risk of lever 2 detaching from connector 3. When the depth of connector 3 is greater than 1.5 times the diameter of lever 2, the excessive depth affects installation efficiency and significantly increases manufacturing costs. Therefore, when the depth of connector 3 is 1.2-1.5 times the diameter of lever 2, sufficient depth allows the end of lever 2 to be fully inserted. Combined with the elastic clamping layer 4 and external fixing collar, the lever 2 has sufficient contact length within connector 3, ensuring connection stability, effectively dispersing external forces such as tension generated during lever operation, reducing the risk of lever 2 detaching from connector 3, and ensuring safe use.

[0028] The connecting pipe 1 and the fixing ring 5 are made of high-strength insulating material. In high-voltage environments such as high-voltage switch-off operations, they can effectively block current and prevent electric shock to operators, greatly improving operational safety and allowing users to perform switch-off related operations with peace of mind. The locking bolt 6 has a convenient rotating handle 9 at its end. When installing or removing the switch rod 2 and needing to tighten or loosen the locking bolt 6, the operator can more easily and effortlessly hold the rotating handle 9 to operate without the need for additional tools, improving operational efficiency and making the entire connection structure more convenient to use.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connection structure of a high-voltage drawout lever comprising a connection pipe (1) and a drawout lever (2) connected in sequence, characterized in that, One end of the connecting pipe (1) is provided with an opening (8) and is used for accommodating the connecting head (3) of the end of the pull lever (2), the connecting head (3) is provided with an elastic clamping layer (4) inside, the connecting head (3) is provided with a fixed ring sleeve (5) outside, the fixed ring sleeve (5) is provided with a plurality of group locking assemblies, the locking assemblies are uniformly distributed along the radial direction of the connecting head (3), the locking assembly comprises a locking bolt (6) which is threadedly connected with the fixed sleeve ring and an arc-shaped plate (7) which is fixed at one end of the locking bolt (6) and is arranged in the fixed ring sleeve (5), the arc-shaped plate (7) is matched with the outer wall of the connecting head (3), and the side of the arc-shaped plate (7) which abuts against the connecting head (3) is provided with anti-skid lines.

2. The connecting structure of a high-voltage drawout bushing rod according to claim 1, characterized in that, The opening (8) end of the connecting head (3) is in a horn-shaped structure, and the edge of the horn-shaped opening (8) is provided with a chamfer.

3. The connecting structure of a high-voltage drawout bushing rod according to claim 1, wherein The elastic clamping layer (4) is composed of rubber material which is wear-resistant and has spiral convex points, and the length of the fixed sleeve ring is 0.5-0.8 times the length of the connecting head (3).

4. The connecting structure of a high-voltage drawout bushing rod according to claim 1, wherein The depth of the connecting head (3) is 1.2-1.5 times the diameter of the pull lever (2), and the inner diameter of the opening (8) of the connecting head (3) in the fully open state is not less than 1.2 times the outer diameter of the pull lever (2).

5. The connecting structure of a high-voltage drawout bushing rod according to claim 1, wherein The connecting pipe (1) and the fixed ring sleeve (5) are made of high-strength insulating material.

6. The connecting structure of a high-voltage drawout bushing rod according to claim 1, wherein The end of the locking bolt (6) is provided with a rotating handle (9) which is convenient to operate.

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