Cross arm fixing device

Abstract

The utility model relates to the field of electric power safety technology, in order to solve the problem that the existing electric power porcelain bottle fixing device is difficult to adapt to different shapes and sizes of cross arm, provide a cross arm fixing device, the device includes one base, two base, height adjusting assembly, three base and lock arm, by the adjusting module that constitutes by two base, height adjusting assembly, three base, and the automatic locking structure controlled by the trigger mechanism with lock arm, make device can quickly adapt and firmly lock on the cross arm of different shapes and sizes, significantly improve the operation convenience and installation efficiency, greatly simplify the operation process, reduce the high altitude operation time and personnel's operation burden, especially suitable for the urgent working condition of electric power emergency repair.

Description

Technical Field

[0001] This utility model relates to the field of power safety technology, specifically to a crossarm fixing device. Background Technology

[0002] In power distribution lines, drop-out fuses are critical overload and short-circuit protection devices, typically installed on iron crossarms via porcelain insulators. A typical installation structure involves a pre-drilled mounting hole in the center of the porcelain insulator. One end of a metal connector is secured to the hole using adhesive, while the other end is rigidly connected to the crossarm. While this cement-based bonding process provides sufficient mechanical strength initially, long-term outdoor operation exposes the adhesive to various factors such as temperature cycling, rain erosion, mechanical vibration, and material aging. This can cause the adhesive to crack, powder, or even fail, reducing the bond strength between the connector and the insulator and leading to loosening of the insulator. If these hazards are not detected and addressed promptly, they can cause electrical accidents such as equipment tilting, lead wire breakage, or even insulator detachment, seriously threatening the safe and stable operation of the power line.

[0003] Therefore, during regular power line inspections, once loose porcelain insulators are detected, rapid and effective temporary reinforcement measures must be taken. However, existing devices for securing loose porcelain insulators generally suffer from poor adaptability in practical applications, making it difficult to meet complex on-site installation conditions. Specifically, this manifests as: challenges related to the diversity of crossarm structures and dimensions: Crossarms used in power lines have diverse cross-sectional shapes, commonly including angle steel and rectangular tubes, with significant differences in their specifications and dimensions (such as the side width of angle steel and the length and width of rectangular tubes). Existing fixing devices often have base structures designed for specific crossarms, lacking necessary adjustment mechanisms, making it difficult to reliably clamp or fix them to crossarms of different shapes and sizes, resulting in insufficient versatility and low ease of installation.

[0004] In conclusion, developing a base that can adapt to various crossarms (different shapes and sizes) is an urgent practical need for improving the efficiency of power emergency maintenance and ensuring the safe operation of power lines. Utility Model Content

[0005] To address the aforementioned technical deficiencies, this utility model provides a crossbeam fixing device that can adapt to crossbeams of different specifications and sizes.

[0006] This utility model discloses a crossbeam fixing device, including a first base, a second base, a height adjustment component, a third base, and a locking arm; the first base is horizontally arranged, the second base is vertically arranged and horizontally slidably arranged below the first base, and locked by a locking structure; the height adjustment component is vertically slidably arranged on the second base and locked by a locking structure; the third base is horizontally arranged and horizontally slidably arranged on the height adjustment component and locked by a locking structure; the locking arm is horizontally arranged, and the locking arm includes a... A first locking arm is hinged to a first base, and a second locking arm is horizontally slidably mounted on the first locking arm. The first and second locking arms are locked together by a locking structure. The second base, height adjustment assembly, third base, and second locking arm allow for flexible adjustment and locking, enabling the device base to precisely adapt to crossbeams of different cross-sectional shapes (such as angle steel and rectangular tubes) and different sizes. A first torsion spring is provided at the hinge point between the first locking arm and the first base, giving the locking arm a downward pressing tendency. A fastening part is provided at the end of the second locking arm. The third base... The base is provided with a latching part that cooperates with the latching part; a locking rod is also hinged to the first locking arm, and a buckle is provided on the first base. The end of the locking rod is bent and fastened to the buckle, and a second torsion spring is provided at the hinge point between the locking rod and the first locking arm to keep the locking rod in the latched state. When the device is not installed, its locking rod is tightly fastened to the buckle under the action of the second torsion spring. At this time, the locking arm is raised and kept in the open state. Under the preload of the first torsion spring, the locking arm has a tendency to automatically press down; the first base is corresponding to A trigger mechanism is installed at the bend of the locking lever to disengage it from the latch. The trigger point of the mechanism is located on the lower side of base number one. Base number two has a horizontal slot on the upper part near the locking arm for inserting one side of the angle steel. When the base is inserted into the target crossarm, the crossarm naturally presses against the trigger point on the lower side of base number one. This pressure drives the trigger mechanism, which in turn lifts the bend of the locking lever, disengaging it from the latch. Once the locking lever disengages, the locking arm, previously restrained by it, quickly rotates downwards and closes under the strong force of torsion spring number one. The latching part at the end of locking arm number two then automatically latches with the latched part on base number three, instantly and securely "locking" the device onto the crossarm.

[0007] To facilitate precise control of the displacement of each adjusting component of the base, one surface of the No. 1, No. 2, and No. 3 bases and the locking arm are provided with graduations for accommodating angle steel crossarms, while the other surface is provided with graduations for accommodating rectangular tube crossarms. This design allows operators to quickly and accurately adjust for different types of crossarms.

[0008] For stable engagement, the engagement part includes a latch, a first rod, a pull ring, and a first spring. A receiving cavity penetrating the second locking arm is provided on the second locking arm. A stepped hole is provided outward on the side wall of the receiving cavity. The latch is installed in the larger hole of the stepped hole, and the first rod is installed in the smaller hole of the stepped hole. One end of the first rod is connected to the latch, and the other end of the first rod is provided with a pull ring. A first spring is provided between the latch and the shoulder of the stepped hole. The engagement part includes a protrusion provided on the third base. The protrusion matches the receiving cavity. A groove is provided on the protrusion corresponding to the position of the latch. When engaged, the protrusion is located in the receiving cavity and the latch is located in the groove.

[0009] To effectively trigger the locking lever to disengage from the latch, the triggering mechanism includes a second lever body, a top block, a trigger block, and a second spring. A vertical mounting through hole is provided on the first base corresponding to the position of the bent part of the locking lever. The second lever body is slidably installed in the mounting through hole. A top block is provided at the upper end of the second lever body, and the top block contacts the bent part of the locking lever. A trigger block is provided at the lower end of the second lever body. A guide slope is provided on the trigger block to facilitate the upward lifting of the trigger block when the crossbeam contacts the trigger block. A second spring is provided on the second lever body between the trigger block and the first base.

[0010] The crossarm fixing device obtained by this utility model has the following advantages: it can flexibly adapt to crossarms with different cross-sectional shapes (such as angle steel and rectangular tube) and different specifications and sizes; it significantly improves the ease of operation and installation efficiency, greatly simplifies the operation process, reduces the time spent working at height and the operational burden on personnel, and is particularly suitable for urgent work conditions of power emergency maintenance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a top view of the present invention; Figure 4 This is sectional view AA in the top view of this utility model. Detailed Implementation

[0012] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0013] Example 1: like Figure 1 , 2As shown in Figures 3 and 4, this utility model discloses a crossbeam fixing device, including a first base 1, a second base 2, a height adjustment component, a third base 9, and a locking arm. The first base 1 is horizontally arranged, and a first sliding groove is horizontally arranged on the lower side of the first base 1. A first elongated hole 25 is arranged on the first base 1 above the first sliding groove along the direction of the first sliding groove. The second base 2 is vertically arranged, and the upper end of the second base 2 is slidably arranged in the first sliding groove. A first through hole is vertically arranged on the upper end of the second base 2. A first bolt 24 passes through the first elongated hole 25 and the first through hole and is fixed by a nut to form a locking structure. The height adjustment assembly includes a first slider 5 and a second slider 6, which are located on opposite sides of a second base 2 and can slide up and down along the second base 2. A second elongated hole 3 is vertically provided on the second base 2, and a second through hole is horizontally provided on the first slider 5 and the second slider 6. A second bolt 4 passes through the second through hole and the second elongated hole 3 and is fixed by a nut to form a locking structure. Second sliding grooves are provided on both sides of the first slider 5 and the second slider 6. The third base 9 has a U-shaped structure and is horizontally positioned, with sliding side arms on both sides. Within the second groove, a third elongated hole 8 is provided on the side arm along its length. A third through hole is provided on the first slider 5 corresponding to the position of the elongated hole. The third bolt 7 passes through the third elongated hole 8 and the third through hole and is fixed by a nut to form a locking structure. The locking arm is horizontally arranged and includes a first locking arm 18 hinged to the first base 1 and a second locking arm 15 slidably arranged on the first locking arm 18. The first locking arm 18 has third grooves on both sides along its length. The second locking arm 15 has a U-shaped structure, with its side arms slidably arranged within the third grooves. A fourth elongated hole 12 is provided on the side arm along the length direction of the side arm. A fourth through hole is provided on the first locking arm 18 at the position corresponding to the fourth elongated hole 12. The fourth bolt 16 passes through the fourth elongated hole 12 and the fourth through hole and is fixed by a nut to form a locking structure. The upper part of the second base 2 is provided with a horizontal groove on the side near the locking arm to allow one side of the angle steel to be inserted. In order to facilitate precise control of the displacement of each adjustment component of the base, the first base 1, the second base 2, the third base 9 and the locking arm are provided with a scale for adapting to the angle steel crossarm, and the other side is provided with a scale for adapting to the rectangular tube crossarm.At the hinge point between the first locking arm 18 and the first base 1, a first torsion spring 26 is provided to give the locking arm a downward pressing tendency. Specifically, the first torsion spring 26 is sleeved on the pivot at the hinge point. One end of the first torsion spring 26 is fixed to the locking arm, and the other end is fixed to the first base 1. The first torsion spring 26 has a torque that gives the locking arm a downward pressing tendency. A fastening part is provided at the end of the second locking arm 15. The fastening part is designed such that a receiving cavity 13 penetrating the second locking arm 15 is provided. A stepped hole is provided outwardly on the side wall of the receiving cavity 13. The larger hole of the stepped hole... A locking tongue 27 is provided, and a first rod is installed in the small hole of the stepped hole. One end of the first rod is connected to the locking tongue 27, and the other end of the first rod is provided with a pull ring 14. A first spring is provided between the locking tongue 27 and the shoulder of the stepped hole. The third base 9 is provided with a fastened part 10 that cooperates with the fastening part. The fastened part 10 is a protrusion that matches the receiving cavity 13. A groove 11 is provided on the protrusion corresponding to the position of the locking tongue 27. When fastened, the protrusion is located in the receiving cavity 13 and the locking tongue 27 is located in the groove 11. A locking rod 19 is also hinged to the first locking arm 18. A buckle 20 is provided on the first base 1. The end of the locking rod 19 is bent and fastened to the buckle 20. A second torsion spring 17 is provided at the hinge between the locking rod 19 and the first locking arm 18 to keep the locking rod 19 in the engaged state. That is, the second torsion spring 17 is sleeved on the pivot at the hinge. One end of the second torsion spring 17 is fixed to the first locking arm 18, and the other end of the second torsion spring 17 is fixed to the locking rod 19. The second torsion spring 17 has a torque to keep the locking rod 19 in the engaged state. A position on the first base 1 corresponding to the bent part of the locking rod 19 is provided for... The trigger mechanism that drives the locking lever 19 to disengage from the latch 20 is designed as follows: A vertical mounting through hole is provided on the first base 1 corresponding to the bent portion of the locking lever 19. A second lever body is slidably mounted within the mounting through hole. A top block 21 is provided at the upper end of the second lever body, contacting the bent portion of the locking lever 19. A trigger block 22 is provided at the lower end of the second lever body, with a guide slope on the trigger block 22 to facilitate upward lifting of the trigger block 22 when the crossbeam contacts it. A second spring 23 is provided on the second lever body between the trigger block 22 and the first base 1.

Claims

1. A crossbeam fixing device, characterized in that: The system includes a first base, a second base, a height adjustment component, a third base, and a locking arm. The first base is horizontally positioned, and the second base is vertically positioned and slidably mounted horizontally below the first base, secured by a locking structure. The height adjustment component is slidably mounted on the second base and secured by the locking structure. The third base is horizontally positioned and slidably mounted on the height adjustment component and secured by the locking structure. The locking arm is horizontally positioned and includes a first locking arm hinged to the first base and a second locking arm slidably mounted on the first locking arm. The first and second locking arms are secured by the locking structure. The first locking arm is connected to the first base. A first torsion spring is provided at the hinge to give the locking arm a downward pressing tendency. The end of the second locking arm is provided with a fastening part. The third base is provided with a fastened part that cooperates with the fastening part. A locking rod is also hinged to the first locking arm. A buckle is provided on the first base. The end of the locking rod is bent and fastened to the buckle. A second torsion spring is provided at the hinge between the locking rod and the first locking arm to keep the locking rod in a fastened state. A triggering mechanism for driving the locking rod to disengage from the buckle is provided on the first base at the position corresponding to the bent part of the locking rod. The triggering point of the triggering mechanism is located on the lower side of the first base. A slot for inserting one side of the angle steel is provided horizontally on the upper part of the second base near the locking arm.

2. The crossbeam fixing device according to claim 1, characterized in that: The first base, the second base, the third base, and the locking arm have graduations on one side for accommodating angle steel crossarms, and graduations on the other side for accommodating rectangular tube crossarms.

3. A crossbeam fixing device according to claim 1 or 2, characterized in that: The fastening part includes a latch, a first rod, a pull ring, and a first spring. A receiving cavity is provided on the second locking arm, and a stepped hole is provided outward on the side wall of the receiving cavity. The latch is provided in the larger hole of the stepped hole, and the first rod is provided in the smaller hole of the stepped hole. One end of the first rod is connected to the latch, and the other end of the first rod is provided with a pull ring. A first spring is provided between the latch and the shoulder of the stepped hole. The fastened part includes a protrusion provided on the third base. The protrusion matches the receiving cavity, and a groove is provided on the protrusion corresponding to the position of the latch. When fastened, the protrusion is located in the receiving cavity and the latch is located in the groove.

4. A crossbeam fixing device according to claim 1 or 2, characterized in that: The triggering mechanism includes a second rod, a top block, a trigger block, and a second spring. A vertical mounting through hole is provided on the first base corresponding to the position of the bent part of the locking rod. The second rod is slidably installed in the mounting through hole. A top block is provided at the upper end of the second rod, and the top block contacts the bent part of the locking rod. A trigger block is provided at the lower end of the second rod, and a guide slope is provided on the trigger block. A second spring is provided on the second rod between the trigger block and the first base.

5. A crossbeam fixing device according to claim 3, characterized in that: The triggering mechanism includes a second rod, a top block, a trigger block, and a second spring. A vertical mounting through hole is provided on the first base corresponding to the position of the bent part of the locking rod. The second rod is slidably installed in the mounting through hole. A top block is provided at the upper end of the second rod, and the top block contacts the bent part of the locking rod. A trigger block is provided at the lower end of the second rod, and a guide slope is provided on the trigger block. A second spring is provided on the second rod between the trigger block and the first base.

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