High sealing wear-resistant spacer rod for wind-sand environment

Abstract

The utility model relates to spacer technology field discloses a kind of high sealing resistance wear spacers for wind-sand environment including main body frame and clamping assembly. Multiple connecting parts are distributed with the circumferential interval of main body frame, connecting part is provided with accommodating cavity, connecting part is provided with hinged hole, and hinged hole penetrates accommodating cavity. The first end of first clamping piece is located in accommodating cavity, the first end of first clamping piece is provided with connecting hole, and first clamping piece and connecting part pass through the pin shaft of hinged hole and connecting hole, pin shaft is rotatably connected with hinged hole, pin shaft is connected with first clamping piece, arc slot is set on first clamping piece and second clamping piece, and arc slot on first clamping piece and second clamping piece is buckled to form clamping cavity, and clamping cavity is suitable for clamping wire. Wherein, between the hole wall of hinged hole and the outer wall of pin shaft, multiple sealing elements are arranged along the axial direction of pin shaft with interval. The utility model can realize long life, high reliable operation of spacer.

Description

Technical Field

[0001] This utility model relates to the field of spacer technology, specifically to a high-sealing, wear-resistant spacer for use in windy and sandy environments. Background Technology

[0002] Spacer bars are important hardware components in overhead transmission lines, mainly used to fix the relative positions of split conductors, prevent conductors from whipping each other, reduce the damage caused by wind vibration and galloping, and ensure the safe and stable operation of the line. In arid and semi-arid regions with frequent sandstorms, such as transmission corridors in deserts, Gobi, and grasslands, spacer bars are exposed to high-velocity air rich in fine dust for extended periods, making their working environment extremely harsh.

[0003] In existing technologies, spacer bars typically address wear by increasing material hardness or adding wear-resistant coatings. For example, the main frame is made of galvanized steel or aluminum alloy, and high-hardness metal inserts or tungsten carbide coatings are embedded in the hinge joints and wire clamps. Regarding sealing, most products rely on a single O-ring for protection, while some designs use an integral rubber sleeve to cover moving parts. While these methods slow down the wear process to some extent, they fail to fundamentally block the path of sand and dust into the moving parts, especially at the frequently rotating hinge shaft hole and wire clamp assembly interface, where the sealing measures are often weak.

[0004] Because existing spacers generally lack effective multi-stage sealing mechanisms, sand and dust can easily penetrate the hinge joints and clamps, mixing with grease to form an abrasive, causing severe abrasive wear, leading to joint jamming, reduced clamping force, and bolt loosening. Therefore, achieving long service life and high reliability of spacers in strong wind and sand environments remains a pressing technical challenge in current power transmission projects. Utility Model Content

[0005] This invention provides a high-sealing, wear-resistant spacer for use in windy and sandy environments, to solve the problems of long service life and high-reliability operation of spacers.

[0006] This utility model provides a high-sealing, wear-resistant spacer bar for use in windy and sandy environments, comprising: The main frame has multiple connecting parts distributed at intervals along its circumference. Each connecting part is provided with a receiving cavity and a hinge hole is provided on the connecting part, with the hinge hole penetrating through the receiving cavity. A clamping assembly includes a first clamping member and a second clamping member. The first clamping member has a first end and a second end opposite to each other. The first end of the first clamping member is located in the receiving cavity. The first end of the first clamping member is provided with a connecting hole. The first clamping member and the connecting part are connected by a pin inserted into the hinge hole and the connecting hole. The pin is rotatably connected to the hinge hole and connected to the first clamping member. Both the first clamping member and the second clamping member are provided with arc-shaped grooves. The first clamping member and the second clamping member are detachably connected. The arc-shaped grooves on the first clamping member and the second clamping member engage to form a clamping cavity. The clamping cavity is suitable for clamping wires. Among them, multiple sealing elements are provided at intervals along the axial direction of the pin between the wall of the hinge hole and the outer wall of the pin.

[0007] Beneficial Effects: By incorporating multiple axially spaced seals within the hinge holes of the main frame connection and the clamping pin, a multi-layered, integrated dynamic sealing system is constructed. This structure effectively prevents the intrusion of fine sand and dust from the hinge joint in a windy and sandy environment, preventing sand and dust from entering the moving parts and mixing with the lubricating grease to form an abrasive. This avoids problems such as joint jamming, pin wear, and decreased clamping force caused by abrasive wear. Compared to the single or missing sealing designs in existing technologies, this improves the sealing reliability and durability of the spacer's core moving components in windy and sandy environments, extending its maintenance cycle and service life.

[0008] In one alternative implementation, the main frame includes: A pair of plates are spaced apart along the axial direction of the pin. The shapes of the two plates are adapted to each other. A weight-reducing hole is provided in the middle of the plate. Multiple connecting plates are spaced apart along the circumference of the plate. The connecting plates and the plate are constructed as an integral structure. Multiple connecting plates on one plate are respectively arranged in one-to-one correspondence with multiple connecting plates on the other plate. The gap between two opposing connecting plates forms the receiving cavity.

[0009] In one optional embodiment, each of the pair of plates is provided with a hinge hole, and the two ends of the pin are respectively rotatably connected to the two opposite hinge holes.

[0010] In one optional implementation, a vibration damping component is further included, the vibration damping component comprising: A damping wheel is disposed between the pair of plates; A pair of rotating shafts are respectively disposed at both ends of the damping wheel along its axial direction and are both connected to the damping wheel. A pair of plates are respectively provided with rotating holes, and the pair of rotating shafts are respectively provided with a one-to-one correspondence with the pair of rotating holes. The rotating shafts are rotatably connected to the rotating holes.

[0011] In one alternative embodiment, a plurality of vibration damping components are provided, and the plurality of vibration damping components are distributed at intervals along the circumference of the plate.

[0012] In one optional embodiment, the plate body is provided with a recessed portion, the recessed portion is recessed in a direction away from the damping wheel, a pair of the recessed portions of the plate body form a receiving space, the damping wheel is located in the receiving space, and the rotating hole is provided on the recessed portion.

[0013] In one alternative embodiment, a reinforcing rib is provided on the side of the plate facing away from the damping wheel, and the reinforcing rib extends circumferentially along the plate.

[0014] In one alternative embodiment, both the hinge hole and the rotation hole penetrate the reinforcing rib.

[0015] In one optional embodiment, the second clamping member is provided with a first fixing hole and a second fixing hole, and the first clamping member and the second clamping member are connected by a first fastener inserted into the first fixing hole and the second fixing hole.

[0016] In one alternative embodiment, a liner is provided inside the arcuate groove. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a high-sealing, wear-resistant spacer for use in sandy environments, according to an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Main frame; 101. Plate; 102. Weight reduction hole; 103. Connecting plate; 104. Recessed part; 105. Reinforcing rib; 2. Clamping assembly; 201. First clamping member; 202. Second clamping member; 203. Arc-shaped groove; 3. Pin; 4. Damping wheel; 5. Shaft; 6. First fastener; 7. Second fastener. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] The following is combined with Figure 1 The following describes embodiments of the present invention.

[0022] According to an embodiment of the present invention, a high-sealing, wear-resistant spacer bar for use in windy and sandy environments is provided, comprising a main frame 1 and a clamping assembly 2. The main frame 1 has multiple connecting portions spaced apart along its circumference, each connecting portion having a receiving cavity, and a hinge hole penetrating through the receiving cavity. The clamping assembly 2 includes a first clamping member 201 and a second clamping member 202. The first clamping member 201 has a first end and a second end opposite to each other. The first end of the first clamping member 201 is located in the receiving cavity and has a connecting hole. The first clamping member 201 and the connecting part are connected by a pin 3 inserted into the hinge hole and the connecting hole. The pin 3 is rotatably connected to the hinge hole and connected to the first clamping member 201. Both the first clamping member 201 and the second clamping member 202 are provided with arc-shaped grooves 203. The first clamping member 201 and the second clamping member 202 are detachably connected. The arc-shaped grooves 203 on the first clamping member 201 and the second clamping member 202 engage to form a clamping cavity, which is suitable for clamping the wire. Among them, multiple sealing elements are provided at intervals along the axial direction of the pin 3 between the wall of the hinge hole and the outer wall of the pin 3.

[0023] It should be noted that a bushing is fitted on the outside of the pin 3, and the pin 3 and the bushing are rotatably engaged, while the bushing is fixedly connected to the inner wall of the hinge hole.

[0024] The seal can be configured as a labyrinthine non-contact sealing structure, with multiple continuous annular grooves designed at the end of the bushing, and the groove gap controlled at 0.1-0.2mm. Utilizing the principles of fluid dynamics, sand and dust are separated from the airflow and deposited in the tortuous channel due to centrifugal force and inertia. CNC precision machining ensures uniform gaps, and the inner wall of the groove is polished to reduce sand and dust adhesion.

[0025] The seal can also be configured as a magnetohydrodynamic (MHD) seal structure, with an annular permanent magnet and a magnetic pole shoe installed inside the bushing to form a high-strength magnetic field gap. A special magnetohydrodynamic fluid is injected to form a liquid O-ring. Multi-stage magnetic poles (typically 2-3 stages) are calculated and designed to accommodate pressure differences caused by wind pressure fluctuations.

[0026] The seal can also be configured as a lip seal structure, with a double-lip fluororubber sealing ring installed on the innermost side. The main lip faces outward, and a grease cavity is formed between the secondary lip and the main lip. During assembly, the grease cavity must be filled with a long-lasting, wide-temperature-range silicone-based grease.

[0027] It is understandable that labyrinth-type non-contact sealing structures, magnetohydrodynamic sealing structures, and lip sealing structures are all existing technologies, so they will not be elaborated on further.

[0028] In this embodiment, a multi-layered, integrated dynamic sealing system is constructed by setting multiple axially spaced seals in the hinge holes of the main frame 1 connection and the clamping pin 3. This structure effectively blocks the intrusion of fine sand and dust from the hinge joint in a sandy environment, preventing sand and dust from entering the moving parts and mixing with the lubricating grease to form an abrasive. This avoids problems such as joint jamming, pin 3 wear, and decreased clamping force caused by abrasive wear. Compared with the single or missing sealing design in the prior art, this improves the sealing reliability and durability of the core moving parts of the spacer bar in a sandy environment, and extends its maintenance cycle and service life.

[0029] In one embodiment, the main frame 1 includes a pair of plates 101, which are spaced apart along the axial direction of the pin 3. The pair of plates 101 are shaped to fit each other. A weight-reducing hole 102 is provided in the middle of the plate 101. Multiple connecting plates 103 are spaced apart along the circumference of the plate 101. The connecting plates 103 and the plate 101 are constructed as an integral structure. The multiple connecting plates 103 on one plate 101 are respectively arranged in correspondence with the multiple connecting plates 103 on the other plate 101. The gap between the two opposite connecting plates 103 forms a receiving cavity.

[0030] In this embodiment, by specifically defining the main frame 1 as a pair of integral plates 101 with connecting plates 103, a stable and robust frame structure is formed. This design not only ensures the overall mechanical strength and stability of the spacer bar, enabling it to withstand various dynamic loads transmitted from the conductors, but also provides effective space and protection for the internal hinge components and sealing structure through the accommodating cavity. The integrated plate 101 and connecting plate 103 design simplifies the manufacturing process, enhances the overall structural integrity, and is beneficial for resisting vibration and impact in windy and sandy environments.

[0031] In one embodiment, each of the pair of plates 101 is provided with a hinge hole, and the two ends of the pin 3 are respectively rotatably connected to the two opposite hinge holes.

[0032] In this embodiment, by rotatably connecting both ends of the pin 3 to the hinge holes on a pair of plates 101, stable and symmetrical support is achieved between the clamping assembly 2 and the main frame 1. This dual-point support structure makes the force on the pin 3 more even, reducing the uneven wear and jamming that may occur due to single-point support, and ensuring the smoothness and reliability of the hinge joint rotation. At the same time, this structure also provides a basis for the simultaneous implementation of sealing measures at both ends, further enhancing the sealing and protection effect of the entire joint area.

[0033] In one embodiment, a vibration damping assembly is further included, comprising a damping wheel 4 and a pair of rotating shafts 5. The damping wheel 4 is disposed between a pair of plates 101. The pair of rotating shafts 5 are respectively disposed at both ends of the damping wheel 4 along its axial direction and are both connected to the damping wheel 4. The pair of plates 101 are respectively provided with rotating holes, and the pair of rotating shafts 5 are respectively provided with a pair of rotating holes corresponding one-to-one, and the rotating shafts 5 are rotatably connected to the rotating holes.

[0034] It should be noted that the damping wheel 4 is made of wear-resistant engineering plastic or metal, with a grooved or toothed surface. A damping structure is provided between the rotating shaft 5 and the rotating hole, which can be a rubber pad, a metal damper, or a friction plate.

[0035] In this embodiment, by adding a vibration damping assembly including a damping wheel 4 and a rotating shaft 5, an effective vibration suppression function is introduced into the spacer. When the conductor experiences light wind vibration, the damping wheel 4 can consume and absorb vibration energy through its own rotation and the friction or deformation of its internal damping elements, thereby reducing the dynamic stress transmitted to the spacer's main frame 1 and the conductor. This not only protects the conductor from fatigue damage but also reduces the loosening and wear that may occur in the spacer's own structure (especially the hinge joints and sealing components) due to long-term vibration, improving overall reliability.

[0036] In one embodiment, multiple vibration damping components are provided, and the multiple vibration damping components are distributed at intervals along the circumference of the plate 101.

[0037] In this embodiment, by setting multiple vibration damping components spaced circumferentially, the synergistic suppression of multi-directional and multi-modal vibrations of the spacer bar is achieved. Multiple damping rollers 4 can work together to more effectively disperse and dissipate vibration energy from conductors in different directions, providing a more comprehensive and balanced vibration damping effect. This layout significantly enhances the spacer bar's adaptability to complex wind-induced vibrations, further improving its protection level for the line and itself.

[0038] In one embodiment, a recess 104 is provided on the plate 101. The recess 104 is recessed in a direction away from the damping wheel 4. A pair of recesses 104 on the plate 101 form a receiving space. The damping wheel 4 is located in the receiving space, and a rotation hole is provided on the recess 104.

[0039] In this embodiment, by providing recesses 104 on a pair of plates 101 to form a space to accommodate the damping wheel 4, a compact and integrated structure is achieved. This design embeds the vibration damping components within the main frame 1, reducing the overall protrusion of the spacer bars. This not only makes the structure more streamlined and helps reduce wind resistance and dust accumulation, but also lowers the risk of interference with surrounding components. This built-in layout optimizes space utilization, making the product structure more compact and reliable.

[0040] In one embodiment, a reinforcing rib 105 is provided on the side of the plate 101 facing away from the damping wheel 4, and the reinforcing rib 105 extends circumferentially along the plate 101.

[0041] In this embodiment, by providing circumferentially extending reinforcing ribs 105 on the back of the plate 101, the structural rigidity and resistance to bending deformation of the plate 101 are enhanced without significantly increasing the amount of material used or the weight. This ensures that the main frame 1 can maintain its shape stability when subjected to conductor tension and wind loads over a long period of time, preventing the flexibility and sealing effect of the hinge joints from being affected by frame deformation, thereby improving the overall structural integrity and long-term service performance of the product.

[0042] In one embodiment, both the hinge hole and the rotating hole penetrate the reinforcing rib 105.

[0043] In this embodiment, by having both the hinge hole and the rotation hole penetrate the reinforcing rib 105, the reinforcing structure is combined with the functional holes. This allows the high-stress hinge points and rotation points to be directly supported by the reinforcing rib 105, effectively reducing the risk of wear, loosening, or out-of-roundness of these critical holes due to deformation of the base material under long-term cyclic loads. This further ensures the alignment accuracy and operational stability of the moving parts and extends their service life.

[0044] In one embodiment, the second clamping member 202 is provided with a first fixing hole and a second fixing hole, and the first clamping member 201 and the second clamping member 202 are connected by a first fastener 6 inserted into the first fixing hole and the second fixing hole.

[0045] In this embodiment, the specific structure of connecting the first clamping member 201 and the second clamping member 202 with the first fastener 6 provides a reliable and easy-to-implement method for applying and adjusting clamping force. This structure ensures that the two clamping members can be tightly and securely engaged to form an effective clamping of the wire, while facilitating on-site installation, debugging, and maintenance. It is simple to operate and has a reliable connection.

[0046] In one embodiment, a liner is provided inside the arc-shaped groove 203.

[0047] It should be noted that both the first fastener 6 and the second fastener 7 are bolts or screws.

[0048] In this embodiment, by providing a pad within the arc-shaped groove 203, the protective capability of the clamping assembly 2 for the conductor is directly enhanced. This pad increases friction with the conductor surface, preventing the conductor from sliding or rotating within the clamping cavity. Simultaneously, its flexible material prevents direct contact and damage to the conductor's surface insulation layer by the hard metal clamps, playing a crucial role in ensuring the integrity of the conductor and the safety of power transmission.

[0049] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A high-sealing, wear-resistant spacer bar for use in windy and sandy environments, characterized in that, include: The main frame (1) has multiple connecting parts distributed at intervals along its circumference. Each connecting part is provided with a receiving cavity and a hinge hole is provided on the connecting part, with the hinge hole penetrating through the receiving cavity. The clamping assembly (2) includes a first clamping member (201) and a second clamping member (202). The first clamping member (201) includes a first end and a second end opposite to each other. The first end of the first clamping member (201) is located in the receiving cavity. The first end of the first clamping member (201) is provided with a connecting hole. The first clamping member (201) and the connecting part are connected by a pin (3) inserted into the hinge hole and the connecting hole. The pin (3) is rotatably connected to the hinge hole and connected to the first clamping member (201). Both the first clamping member (201) and the second clamping member (202) are provided with arc-shaped grooves (203). The first clamping member (201) and the second clamping member (202) are detachably connected. The arc-shaped grooves (203) on the first clamping member (201) and the second clamping member (202) are engaged to form a clamping cavity. The clamping cavity is suitable for clamping wires. Among them, a plurality of sealing elements are provided at intervals along the axial direction of the pin (3) between the wall of the hinge hole and the outer wall of the pin (3).

2. The high-sealing, wear-resistant spacer for sandy environments according to claim 1, characterized in that, The main framework (1) includes: A pair of plates (101) are spaced apart along the axial direction of the pin (3). The shapes of the pair of plates (101) are adapted to each other. A weight-reducing hole (102) is provided in the middle of the plate (101). A plurality of connecting plates (103) are spaced apart along the circumference of the plate (101). The connecting plates (103) and the plate (101) are constructed as an integral structure. The plurality of connecting plates (103) on one of the plates (101) are respectively arranged in correspondence with the plurality of connecting plates (103) on the other plate (101). The gap between the two opposite connecting plates (103) forms the receiving cavity.

3. The high-sealing, wear-resistant spacer for sandy environments according to claim 2, characterized in that, The two plates (101) are provided with hinge holes, and the two ends of the pin (3) are respectively rotatably connected to the two opposite hinge holes.

4. The high-sealing, wear-resistant spacer for sandy environments according to claim 2, characterized in that, It also includes a vibration damping component, which includes: A damping wheel (4) is disposed between a pair of said plates (101); A pair of rotating shafts (5) are respectively set at both ends of the damping wheel (4) along its axial direction and are both connected to the damping wheel (4). A pair of plates (101) are respectively provided with rotating holes. A pair of rotating shafts (5) are respectively provided with a pair of rotating holes. The rotating shafts (5) are rotatably connected to the rotating holes.

5. The high-sealing, wear-resistant spacer for sandy environments according to claim 4, characterized in that, Multiple vibration damping components are provided, and the multiple vibration damping components are distributed at intervals along the circumference of the plate (101).

6. The high-sealing, wear-resistant spacer for sandy environments according to claim 4, characterized in that, The plate (101) is provided with a recess (104), the recess (104) is recessed in a direction away from the damping wheel (4), a pair of the recesses (104) of the plate (101) form a receiving space, the damping wheel (4) is located in the receiving space, and the rotating hole is provided on the recess (104).

7. The high-sealing, wear-resistant spacer for sandy environments according to claim 4, characterized in that, The plate (101) is provided with a reinforcing rib (105) on the side facing away from the damping wheel (4), and the reinforcing rib (105) extends circumferentially along the plate (101).

8. The high-sealing, wear-resistant spacer for sandy environments according to claim 7, characterized in that, Both the hinge hole and the rotating hole penetrate the reinforcing rib (105).

9. The high-sealing, wear-resistant spacer for sandy environments according to claim 1, characterized in that, The second clamping member (202) is provided with a first fixing hole and a second fixing hole. The first clamping member (201) and the second clamping member (202) are connected by a first fastener (6) inserted into the first fixing hole and the second fixing hole.

10. The high-sealing, wear-resistant spacer for sandy environments according to claim 1, characterized in that, A liner is provided inside the arc-shaped groove (203).

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