Quick-mounting multi-directional positioning electric power clamp

Abstract

This invention discloses a quick-installation multi-directional positioning power clamp, comprising an annular clamp body, fastening lugs disposed on both sides of the open end of the annular clamp body, and an upwardly extending cantilever bracket. A locking sleeve is embedded in the mounting hole of the fastening lugs. The inner wall of the locking sleeve has a groove and a wedge-shaped pawl driven by an elastic element. Initially, the pawl protrudes from the inner wall surface. When the fastening bolt passes through the pawl, the pawl elastically resets and engages with the threaded outer wall. The insertion end of the locking sleeve has a tapered guide flare for suspending the bolt in the mounting hole to prevent it from falling from a height. The inner wall of the annular clamp body is covered with an adaptive insulating pad, which elastically deforms under pressure to conform to tubular components of different diameters. The top of the cantilever bracket has a hidden blind hole filled with insulating sealant and pre-embedded with a passive RFID chip. This invention achieves both quick, hands-free installation at heights and physical anti-loosening, while also possessing multi-diameter adaptability and digital maintenance traceability functions.

Description

Technical Field

[0001] This invention belongs to the field of power fittings technology, and particularly relates to a quick-installation multi-directional positioning power clamp. Background Technology

[0002] In power line construction, cable clamps are commonly used to secure cables or fittings to poles or steel pipes. Existing cable clamps have a relatively simple structure, typically using a metal ring and bolts for tightening. However, traditional clamps have several drawbacks.

[0003] When working at heights, workers need to use both hands to insert bolts into the flange holes on the opposite side. The bolts are very easy to slip out of the holes, which not only increases the difficulty of construction but also poses a safety hazard.

[0004] During long-term outdoor operation, the bolts of the clamps are prone to loosening due to wind vibration and temperature changes, which can lead to clamp detachment and cause power accidents.

[0005] Traditional metal clamps cannot adapt to tubular components of different diameters, and direct metal-to-metal contact easily leads to electrochemical corrosion. Furthermore, existing clamps lack information traceability capabilities, posing significant challenges to subsequent digital operation and maintenance of the power grid. Summary of the Invention

[0006] The purpose of this invention is to solve the problems of difficult high-altitude installation, easy loosening of bolts, limited applicable pipe diameter, and lack of digital means for operation and maintenance, and proposes a quick-installation multi-directional positioning power clamp.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A quick-installation multi-directional positioning power clamp includes an annular clamp body and fastening ear plates disposed on both sides of the open end of the annular clamp body. A locking sleeve is embedded in the mounting hole of the fastening ear plate. The inner wall of the locking sleeve is provided with a groove. A wedge-shaped pawl is installed in the groove through an elastic element. The wedge-shaped pawl protrudes from the inner wall surface of the locking sleeve when not under force. When the fastening bolt passes through the locking sleeve and over the wedge-shaped pawl, the wedge-shaped pawl is reset under the action of the elastic element and engages with the outer thread of the fastening bolt. The inner wall of the annular clamp body is covered with an adaptive insulating pad. The adaptive insulating pad undergoes elastic deformation when compressed to fit the outer wall of tubular components of different diameters.

[0008] Preferably, the number of wedge-shaped pawls is at least three, and the plurality of wedge-shaped pawls are evenly distributed along the circumferential direction of the inner wall of the locking sleeve.

[0009] Preferably, the elastic element is a return spring; when the fastening bolt is inserted into the locking sleeve, the wedge-shaped pawl is squeezed and retracts into the groove, compressing the return spring; when the fastening bolt passes through the wedge-shaped pawl, the return spring releases its elastic force, driving the wedge-shaped pawl to return to its original position and protrude from the inner wall of the locking sleeve, so as to engage with the thread of the fastening bolt.

[0010] Preferably, the locking sleeve has an outwardly expanding tapered guide flare at the end facing the insertion of the fastening bolt; after the fastening bolt passes through the locking sleeve and is engaged by the wedge-shaped pawl, the edge of the tapered guide flare forms a blocking step to suspend the fastening bolt in the assembly hole.

[0011] Preferably, when the fastening bolt is inserted into the locking sleeve and engaged by the wedge-shaped pawl, there is a gap between the outer peripheral wall of the fastening bolt and the inner peripheral wall of the locking sleeve; when the fastening bolt is subjected to external force and tends to loosen outward, the fastening bolt drives the wedge-shaped pawl to move outward, so that the back of the wedge-shaped pawl forms a rigid stop interference with the inner wall of the groove, thereby achieving wedge tightening and preventing loosening.

[0012] Preferably, the adaptive insulating pad is made of a high-polymer elastic insulating material, and the adaptive insulating pad is arc-shaped and fits into the inner wall of the annular clamp body.

[0013] Preferably, the annular clamp body is further provided with an upwardly extending cantilever bracket, the top of the cantilever bracket is provided with a hidden blind hole, and a passive RFID chip is pre-embedded in the hidden blind hole; the hidden blind hole is filled with insulating and waterproof sealant to seal the passive RFID chip inside the hidden blind hole.

[0014] The present invention has the following beneficial effects: This invention, through its built-in elastic pawl and sleeve structure, enables high-altitude installation to lock in place immediately, eliminating the need for manual bolt support and significantly improving construction efficiency and safety.

[0015] This invention uses a wedge-shaped pawl to generate rigid resistance when the bolt comes loose, achieving absolute anti-loosening at the physical level and eliminating the hidden danger of bolt loosening caused by wind vibration.

[0016] The adaptive insulating pad layer on the inner wall of the annular main body of this invention can adaptively fit tubular components of different diameters, while also serving as an insulating and corrosion-resistant layer.

[0017] The RFID chip is embedded in the hidden blind hole, which gives the power clamp the ability to digitally trace without changing the shape of the clamp, and provides a data foundation for smart grid operation and maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a magnified left view of the locking sleeve of the present invention; Figure 3 This is a right-side enlarged view of the locking sleeve of the present invention; Figure 4 This is a cross-sectional view of the locking sleeve of the present invention; Figure 5 This is a cross-sectional view of the passive RFID chip embedded in the fastening ear plate of the present invention.

[0019] In the diagram: 1. Ring clamp body; 2. Fastening ear plate; 3. Locking sleeve; 31. Conical guide flare; 4. Elastic element; 5. Wedge-shaped pawl; 6. Adaptive insulating pad; 7. Cantilever bracket; 8. Concealed blind hole; 9. Passive RFID chip. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] This invention provides a quick-installation multi-directional positioning power clamp, mainly comprising an annular clamp body 1 for wrapping tubular components. The open ends of the annular clamp body 1 extend outwards on both sides to form two opposing fastening lugs 2. At the upper end of the annular clamp body 1, an upwardly extending cantilever bracket 7 is integrally formed or welded.

[0022] The fastening lug 2 has an assembly hole for the fastening bolt to pass through. A locking sleeve 3 is embedded inside the assembly hole. The outer diameter of the locking sleeve 3 matches the inner diameter of the assembly hole, thus securing it firmly inside the fastening lug 2. At the end of the locking sleeve 3 facing the fastening bolt insertion, there is an outwardly expanding tapered guide flare 31. The tapered guide flare 31 is trumpet-shaped. During high-altitude construction, the fastening bolt can be easily and smoothly slid into the center of the locking sleeve 3 simply by aligning it with the edge of the tapered guide flare 31, providing good guidance and centering.

[0023] Four grooves are evenly distributed on the inner wall of the locking sleeve 3, along the circumference of the locking sleeve 3. An elastic element 4 is installed inside each groove; in this embodiment, the elastic element 4 is a cylindrical compression return spring. A wedge-shaped pawl 5 is connected to the end of each spring.

[0024] In the initial state without the fastening bolt installed, the wedge-shaped pawl 5 is subjected to the outward elastic force of the elastic element 4, with its tip protruding outward from the inner wall surface of the locking sleeve 3. When the fastening bolt is forced into the locking sleeve 3 under external force along the tapered guide flare 31, the bolt shank presses against the wedge-shaped inclined surface of the wedge-shaped pawl 5. At this time, the wedge-shaped pawl 5 retracts into the groove, simultaneously compressing the elastic element 4. After the fastening bolt has passed through the entire area where the wedge-shaped pawl 5 is located, the bolt shank no longer obstructs the wedge-shaped pawl 5. At this time, the elastic element 4 releases the accumulated elastic force, instantly pushing the wedge-shaped pawl 5 back to its initial position. After returning to its original position, the wedge-shaped pawl 5 tightly engages with the threaded outer wall of the fastening bolt.

[0025] Because the wedge-shaped pawl 5 has unidirectional guiding properties, it engages with the thread after the bolt is inserted. At this time, the outermost edge of the tapered guide flare 31 forms a blocking step, which works in conjunction with the biting force of the internal wedge-shaped pawl 5 to firmly suspend and hold the bolt in the assembly hole. Workers can completely release their hands, and the bolt will never slip out of the hole, achieving hands-free, quick installation during high-altitude operations.

[0026] When the fastening bolt is inserted into the locking sleeve 3 and engaged by the wedge-shaped pawl 5, a small overhanging gap is reserved between the outer wall of the fastening bolt and the inner cylindrical wall of the locking sleeve 3. This design minimizes friction during bolt insertion and provides space for the wedge-shaped anti-loosening mechanism. When the clamp is subjected to long-term alternating wind loads outdoors, causing the fastening bolt to tend to pull outward, the fastening bolt will drive the wedge-shaped pawl 5 to move outward. Since the wedge-shaped pawl 5 is an inclined wedge shape, the outward pulling force not only fails to pull the pawl out but also causes a strong, rigid interference between the flat back of the wedge-shaped pawl 5 and the inner wall of the groove. This mechanical-physical interference completely blocks the path of the fastening bolt to continue to pull outward, achieving a purely physical wedge-tight anti-loosening mechanism.

[0027] The inner wall of the annular clamp body 1 is covered with an adaptive insulating pad 6. The adaptive insulating pad 6 is made of a high-polymer elastic insulating material and is distributed in an arc shape, closely adhering to the inner wall of the annular clamp body 1. When the tubular component is fitted onto the annular clamp body 1 and the fastening bolts are tightened, the adaptive insulating pad 6 undergoes elastic deformation under pressure as the annular clamp body 1 tightens. Due to its high deformation capacity, this pad can adaptively conform to tubular components of different diameters and different outer wall surface roughness. Simultaneously, the adaptive insulating pad 6 completely isolates the direct contact between the metal annular clamp body 1 and the metal tubular component, effectively preventing galvanic corrosion and providing insulation protection.

[0028] A concealed blind hole 8 is provided on the top end face of the cantilever bracket 7. The concealed blind hole 8 has a small diameter and shallow depth, and does not penetrate the metal plate. A passive RFID chip 9 is pre-embedded inside the concealed blind hole 8. After the chip is installed, industrial-grade insulating and waterproof sealant is filled into the concealed blind hole 8. The cured waterproof sealant completely seals the passive RFID chip 9 inside the concealed blind hole 8, leaving a smooth and seamless exterior that is waterproof and dustproof. During use, maintenance personnel only need to use a handheld RFID reader to scan near the top of the cantilever bracket 7 to quickly read information such as the manufacturer's serial number, installation time, and design torque of the clamp, greatly reducing the cost of subsequent power grid inspection and maintenance, and realizing the digital and intelligent management of power fittings.

[0029] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A quick-installation multi-directional positioning power clamp, comprising an annular clamp body (1) and fastening ear plates (2) disposed on both sides of the open end of the annular clamp body (1), characterized in that: The fastening ear plate (2) has a locking sleeve (3) embedded in its assembly hole. The inner wall of the locking sleeve (3) has a groove. A wedge-shaped pawl (5) is installed in the groove through an elastic element (4). The wedge-shaped pawl (5) protrudes from the inner wall of the locking sleeve (3) when it is not under force. When the fastening bolt passes through the locking sleeve (3) and over the wedge-shaped pawl (5), the wedge-shaped pawl (5) is reset under the action of the elastic element (4) and engages with the threaded outer wall of the fastening bolt. The inner wall of the annular clamp body (1) is covered with an adaptive insulating pad (6). The adaptive insulating pad (6) undergoes elastic deformation when compressed to fit the outer wall of tubular components of different diameters.

2. The quick-installation multi-directional positioning power clamp according to claim 1, characterized in that: The number of the wedge-shaped pawls (5) is at least three, and the plurality of the wedge-shaped pawls (5) are evenly distributed along the circumferential direction of the inner wall of the locking sleeve (3).

3. The quick-installation multi-directional positioning power clamp according to claim 1, characterized in that: The elastic element (4) is a return spring; when the fastening bolt is inserted into the locking sleeve (3), the wedge-shaped pawl (5) is squeezed into the groove and compresses the return spring; when the fastening bolt passes through the wedge-shaped pawl (5), the return spring releases its elastic force, drives the wedge-shaped pawl (5) to reset and protrude out of the inner wall of the locking sleeve (3) to engage with the thread of the fastening bolt.

4. The quick-installation multi-directional positioning power clamp according to claim 1, characterized in that: The locking sleeve (3) has an outwardly expanding tapered guide flare (31) at the end facing the insertion of the fastening bolt; after the fastening bolt passes through the locking sleeve (3) and is engaged by the wedge-shaped pawl (5), the edge of the tapered guide flare (31) forms a blocking step to suspend the fastening bolt in the assembly hole.

5. A quick-installation multi-directional positioning power clamp according to claim 1, characterized in that: When the fastening bolt is inserted into the locking sleeve (3) and engaged by the wedge-shaped pawl (5), there is a gap between the outer peripheral wall of the fastening bolt and the inner peripheral wall of the locking sleeve (3); when the fastening bolt is subjected to external force and tends to disengage outward, the fastening bolt drives the wedge-shaped pawl (5) to move outward, so that the back of the wedge-shaped pawl (5) forms a hard stop interference with the inner wall of the groove, thereby achieving wedge tightening and preventing loosening.

6. A quick-installation multi-directional positioning power clamp according to claim 1, characterized in that: The adaptive insulating pad (6) is made of a polymer elastic insulating material and is arc-shaped and attached to the inner wall of the annular clamp body (1).

7. A quick-installation multi-directional positioning power clamp according to claim 1, characterized in that: The ring-shaped clamp body (1) is also provided with an upwardly extending cantilever bracket (7). The top of the cantilever bracket (7) is provided with a hidden blind hole (8). A passive RFID chip (9) is pre-embedded in the hidden blind hole (8). The hidden blind hole (8) is filled with insulating and waterproof sealant to seal the passive RFID chip (9) inside the hidden blind hole (8).

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