Composite insulator for low-voltage overhead insulated wire

Abstract

The composite insulator comprises an upper element and a lower element which are arranged on a guide in a combined mode, one side of the lower element is fixedly provided with a connector, the connector is provided with an adaptive hole, the adaptive hole is in sliding fit with a hinge joint fixedly arranged on the upper element, and the length of the adaptive hole is smaller than the outer diameter of a wire; locking frames are arranged on the upper element and the lower element in a sliding mode, and the opposite ends of the two locking frames are connected through two binding rings. The problem that a buckling-pressing type insulator in the prior art cannot be conveniently installed by a worker is solved.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, and in particular to a composite insulator for a low-voltage overhead insulated conductor. Background Art

[0002] An insulator is a special insulating control component that can play an important role in an overhead conductor (8). Traditional insulators require the wires to be tied when in use, which is cumbersome and inconvenient to use, so a new type of buckled insulator has emerged.

[0003] The existing buckled insulator includes a double-headed screw, both ends of which are screwed with nuts. The double-headed screw is inserted into two opposite clamping blocks, and the two nuts are rotated relative to or in reverse to control the distance between the two clamping blocks, so that the two clamping blocks clamp the transmission line to achieve the insulation effect. This process requires the worker to hold the operation with both hands at the same time to complete the installation, thereby reducing the installation efficiency of the worker. At the same time, the two nuts are more likely to loosen during long-term use, so the cycle of inspection and maintenance required by the worker is shorter, thereby improving the work efficiency of the worker to a certain extent. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the buckled insulator in the prior art cannot be easily installed by workers, and to provide a composite insulator for low-voltage overhead insulated conductors.

[0005] The present invention solves the above-mentioned technical problems and adopts the following technical solutions: a composite insulator for a low-voltage overhead insulated conductor, comprising an upper element and a lower element which are combined on a guide, a connector fixedly provided on one side of the lower element, an adapting hole provided on the connector, the adapting hole slidably matches with a hinged head fixedly provided on the upper element, and the length of the adapting hole is smaller than the outer diameter of the conductor;

[0006] The upper element and the lower element are both slidably provided with locking frames, and the opposite ends of the two locking frames are connected by two restraining rings.

[0007] As a further optimization of the composite insulator for low-voltage overhead insulated conductors of the present invention: sliding grooves are provided on the opposite surfaces of the upper element and the lower element, the sliding grooves extend along the length or width direction of the upper element or the lower element, and the sliding grooves are slidably matched with the locking frame.

[0008] As a further optimization of the composite insulator for low-voltage overhead insulated conductors of the present invention: through holes are provided on the upper element and the lower element. When the upper element and the lower element clamp the conductor in parallel, the two through holes are concentric for connecting the latch rod.

[0009] As a further optimization of the composite insulator for low-voltage overhead insulated conductors of the present invention: docking holes are provided on the two locking frames, and the inner diameter of the docking holes is the same as that of the through holes. When the two locking frames slide and drive the upper element and the lower element to clamp the conductors in parallel, the docking holes correspond to the through holes for connecting the latch rods.

[0010] As a further optimization of the composite insulator for low-voltage overhead insulated conductors of the present invention: the latch rod can be a double-headed stud, and the double-headed stud is threadedly matched with a nut.

[0011] As a further optimization of the composite insulator for low-voltage overhead insulated conductors of the present invention: the opposite surfaces of the upper element and the lower element are respectively fixedly connected with two sides of the clamping clips distributed along the direction of the hinged head.

[0012] As a further optimization of the composite insulator for a low-voltage overhead insulated conductor of the present invention: the snap-on clamp includes a clamping portion arranged toward the connecting head and a closing portion connected to the clamping portion, the clamping portion is a diamond shape with an opening and closing arranged toward the closing portion, and the closing portion is an expansion shape extending from the opening of the clamping portion and connected to the upper element and the lower element.

[0013] As a further optimization of the composite insulator for low-voltage overhead insulated conductors of the present invention: a through slot is provided on the clamping clamp, and the through slot corresponds to the through holes provided on both the upper element and the lower element.

[0014] As a further optimization of the composite insulator for a low-voltage overhead insulated conductor of the present invention: the snap-on clamp is made of an insulating elastic material.

[0015] As a further optimization of the composite insulator for low-voltage overhead insulated conductors of the present invention: closing blocks are fixedly connected to the opposite surfaces of the upper element and the lower element, grooves are provided on the two closing blocks, and the two grooves are arranged opposite to each other to limit the position of the conductor.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention connects the wires by arranging a snap-on clip to assist the staff to conveniently position the upper component and the lower component on the wires with one hand, and hinges the hinged head arranged on the lower component by arranging a connector with an adapter hole on the upper component, thereby closing the corresponding sides of the upper component and the lower component. Subsequently, the staff can slide the locking frame and the restraining ring on the upper component and the lower component to move the locking frame and the restraining ring to the side of the upper component and the lower component away from the hinged head, and then quickly and preliminarily lock and position the upper component and the lower component on the guide, thereby facilitating the staff to perform subsequent latch rod installation operations.

[0018] The present invention arranges an upper element and a lower element as the insulator body, and arranges a connector with an adapting hole on the upper element to hinge a hinged head arranged on the lower element, and the sliding amount of the hinged head provided by the adapting hole is smaller than the outer diameter of the guide, so that when the upper element and the lower element are parallel to the guide, the hinged head and the connector press against each other to drive the upper element and the lower element to have a separation force, and then press the two ends of the latch rod connecting the upper element and the lower element, and then the probability of the latch rod loosening can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the present invention in use state;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention in use state;

[0023] Figure 5 This is a schematic diagram of the structure of the closing block of the present invention in use state;

[0024] Markings in the figure: 1, upper component; 2, snap-on clip; 201, clamping part; 202, closing part; 203, through slot; 301, locking frame; 302, restraining ring; 303, docking hole; 304, sliding slot; 401, connector; 402, adapter hole; 403, hinged head; 5, lower component; 6, through hole; 7, latch rod; 8, wire; 9, closing block. DETAILED DESCRIPTION

[0025] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with embodiments, but the content of the present invention is not limited to the following embodiments.

[0026] like Figure 1-4 As shown, a composite insulator for low-voltage overhead insulated conductors is similar to the prior art in that an upper element 1 and a lower element 5 are provided with through holes 6. The upper element 1 and the lower element 5 cooperate with the through holes 6 and corresponding stud bolts to be connected to the conductor 8 to act as an insulator.

[0027] Different from the prior art, a hinge head 403 is fixedly provided on one side of the upper component 1, and a connecting head 401 is fixedly provided on the corresponding side of the lower component 5. An adapter hole 402 that slidably cooperates with the hinge head 403 is opened on the connecting head 401. The sliding amount of the hinge head 403 provided by the adapter hole 402 is smaller than the outer diameter of the wire 8, that is, the length of the adapter hole 402 is smaller than the outer diameter of the wire 8. When the upper component 1 and the lower component 5 clamp the wire 8 in parallel, the upper component 1 and the lower component 5 will be relatively parallel. At this time, the connecting head 401 and the hinge head 403 will generate a separation force on the corresponding sides of the upper component 1 and the lower component 5 to push the two away. The two sides of the snap clamp 2 are fixedly connected to the opposite surfaces of the upper component 1 and the lower component 5, and the snap clamp 2 can be quickly connected to the wire 8, so that the staff can position the upper component 1 and the lower component 5 on the wire 8 with one hand.

[0028] There are sliding locking frames 301 at the opposite ends of the upper component 1 and the lower component 5, and the opposite ends of the two locking frames 301 are connected by a restraining ring 302. The two locking frames 301 are slidably connected to the sliding grooves 304 provided on the upper component 1 and the lower component 5. After the clamping clamp 2 positions the upper component 1 and the lower component 5 on the wire 8, the staff can use the guide as a support and pull the two locking frames 301 to the side of the upper component 1 and the lower component 5 away from the hinge head 403 with one hand, and make the restraining ring 302 clamped on the wire 8 to complete the positioning of the upper component 1 and the lower component 5.

[0029] The two locking frames 301 are both provided with docking holes 303 corresponding to the through holes 6, and the inner diameter of the docking holes 303 is the same as the inner diameter of the through holes 6. The snap clip 2 is provided with a through groove 203 corresponding to the through holes 6. The through groove 203, the docking holes 303 and the through holes 6 can allow the latch rod 7 to pass through to lock the upper component 1 and the lower component 5. After the latch rod 7 is connected to the upper component 1 and the lower component 5, the two ends of the latch rod 7 will be pressed against the upper component 1 and the lower component 5 driven by the separation force, thereby reducing the probability of the latch rod 7 loosening, and also making it convenient for the staff to quickly insert the latch rod 7 with one hand to complete the installation work.

[0030] The clamping clamp 2 includes a clamping portion 201 arranged toward the hinge head 403 and a closing portion 202 connected to the clamping portion 201. Specifically, the clamping portion 201 is composed of a diamond-shaped insulating elastic plate, and the closing portion 202 is composed of an insulating elastic plate extending from the lower end of the diamond-shaped clamping portion 201 toward the upper element 1 and the lower element 5. The closing portion 202 can allow the wire 8 to enter the inside of the clamping portion 201, and the diamond-shaped clamping portion 201 can conveniently connect the wire 8 to assist the staff in positioning the upper element 1 and the lower element 5 on the wire 8 for subsequent installation, and the closing portion 202 and the clamping portion 201 can increase the separation force for separating the upper element 1 and the lower element 5, that is, increase the force with which the nuts at both ends of the latch rod 7 are pressed by the upper element 1 and the lower element 5, and then the probability of the latch rod 7 loosening can be further reduced.

[0031] The latch rod 7 can also be replaced by a stud bolt, which can also be quickly inserted, and then the rebound force of the clamp 2, the separation force generated by the mutual pressure of the connecting head 401 and the hinged head 403, and the sliding force of the two locking frames 301 due to the separation force of the connecting head 401 and the hinged head 403 are used to press the ends of the stud bolt to position it. Then, it can be convenient for the staff to tighten the nuts to the two ends of the latch rod 7 which is the stud bolt to a certain extent.

[0032] like Figure 5 As shown, closing blocks 9 are provided on the opposite surfaces of the upper element 1 and the lower element 5, and a groove is provided on the closing block 9 near the connecting head 401. The groove can position the wire 8 so that the guide is arranged close to the connecting and hinged head 403, thereby improving the ability of the upper element 1 and the lower element 5 to lock the guide, and at the same time, it can also maintain the force separating the upper element 1 and the lower element 5 from each other, thereby reducing the possibility of loosening of the latch rod 7.

[0033] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A composite insulator for a low voltage overhead insulated conductor, comprising an upper element (1) and a lower element (5) combined and arranged on a guide, characterized in that: A connector (401) is fixedly provided on one side of the lower element (5), an adapting hole (402) is provided on the connector (401), the adapting hole (402) is slidably matched with a hinged head (403) fixedly provided on the upper element (1), and the length of the adapting hole (402) is smaller than the outer diameter of the wire (8); A locking frame (301) is slidably mounted on both the upper element (1) and the lower element (5), and the opposite ends of the two locking frames (301) are connected via two restraining rings (302).

2. A composite insulator for a low voltage overhead insulated conductor as claimed in claim 1, characterized in that: The upper element (1) and the lower element (5) are provided with sliding grooves (304) on their opposite surfaces. The sliding grooves (304) extend along the length or width direction of the upper element (1) or the lower element (5), and the sliding grooves (304) are slidably matched with the locking frame (301).

3. A composite insulator for a low voltage overhead insulated conductor as claimed in claim 1, characterized in that: The upper element (1) and the lower element (5) are both provided with through holes (6). When the upper element (1) and the lower element (5) clamp the wire (8) in parallel, the two through holes (6) are concentric to connect the latch rod (7).

4. A composite insulator for a low voltage overhead insulated conductor as claimed in claim 3, characterized in that: Both locking frames (301) are provided with a docking hole (303), and the docking hole (303) has the same inner diameter as the through hole (6). When the two locking frames (301) slide to drive the upper element (1) and the lower element (5) to clamp the wire (8) in parallel, the docking hole (303) corresponds to the through hole (6) to connect the latch rod (7).

5. A composite insulator for a low voltage overhead insulated conductor as claimed in claim 3 or 4, characterized in that: The latch rod (7) can be a double-ended stud, and the double-ended stud is threadedly matched with a nut.

6. A composite insulator for a low voltage overhead insulated conductor as claimed in claim 1, characterized in that: The opposing surfaces of the upper element (1) and the lower element (5) are respectively fixedly connected to two sides of a snap-fit ​​clip (2) distributed along the direction of the hinged head (403).

7. A composite insulator for a low voltage overhead insulated conductor as claimed in claim 6, characterized in that: The snap-on clip (2) comprises a clamping portion (201) arranged toward the connecting head (401) and a closing portion (202) connected to the clamping portion (201); the clamping portion (201) is in a rhombus shape with an opening and closing toward the closing portion (202); the closing portion (202) is in a flared shape extending from the opening of the clamping portion (201) and connected to the upper element (1) and the lower element (5).

8. A composite insulator for a low voltage overhead insulated conductor as claimed in claim 6, characterized in that: The snap-fit ​​clip (2) is provided with a through slot (203), and the through slot (203) corresponds to a through hole (6) provided on both the upper element (1) and the lower element (5).

9. A composite insulator for a low voltage overhead insulated conductor as claimed in claim 6, characterized in that: The snap-on clip (2) is made of insulating elastic material.

10. A composite insulator for a low voltage overhead insulated conductor as claimed in claim 1, characterized in that: Closing blocks (9) are fixedly connected on the opposite surfaces of the upper element (1) and the lower element (5), and grooves are provided on the two closing blocks (9), and the two grooves are arranged opposite to each other to limit the position of the wire (8).

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