Safety angle tower wire cross arm

Abstract

The utility model provides a safety angle tower wire cross arm, which belongs to the technical field of power equipment and comprises a main cross arm, a connecting plate, a fixing seat, a connecting frame, a screw rod, an adjusting nut, an extension support, a rotating shaft and an auxiliary cross arm, a plurality of groups of main mounting holes are arranged on the surface of the main cross arm, and the connecting plate is mounted at the outer end of the main cross arm. According to the utility model, two groups of auxiliary cross arms can be arranged at the outer end of the main cross arm without influencing the use and arrangement of power equipment on the main cross arm, and the auxiliary cross arms can shift and rotate outwards from the left end and the right end of the extension bracket, so that the auxiliary cross arms can be adjusted at the outer end of the main cross arm, and the auxiliary cross arms and the main cross arm can be adjusted to be on the same axis; the length of the cross arm is increased by adjusting the length of the cross arm, and the mounting position can be offset inwards and outwards by adjusting the opening and closing angle of the auxiliary cross arm, so that the position of an insulator chain is adjusted, a wire can return to the original direction or the deviation is reduced as much as possible, and the line arrangement is safer.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a safety-type corner tower conductor cross arm. Background Art

[0002] High-voltage line towers are divided into straight towers and tension towers. Corner towers are a type of tension tower. Corner towers are used to change the horizontal direction of the line. In the construction of overhead power transmission lines, the center pile of the line is generally the center pile of the tower, and the foundation pit is based on the center pile. When the tower is a corner tower, the width of the crossarm and the offset of the middle phase will cause the middle phase to deviate from the original line center line by a certain distance. The length of the crossarm will cause the phases on both sides to have a certain offset distance.

[0003] The above reasons will cause the adjacent towers to bear additional angular loads and cause the suspension insulator strings of the two adjacent straight towers to tilt, affecting the safe operation of the line. To overcome the above effects, it is necessary to artificially move the center pile of the corner tower along the line angle bisector to the inner or outer corner side for a certain distance to overcome the offset distance and ensure that the conductor can still return to the original direction or minimize the deviation as much as possible;

[0004] It has been found in actual use that the existing crossarms have the following deficiencies:

[0005] In traditional corner towers, tension insulator strings and related hardware are required for jumpering. The use of tension insulator strings and hardware makes the vertical spacing between crossarms very large, and there is a minimum electrical clearance requirement between the conductor and the corner tower. Generally, the distance between the conductor and the corner tower is increased by increasing the length of the crossarm to meet the electrical clearance requirement. However, excessively long crossarms increase production difficulties, making the tower head structure complex and large in size, and inconvenient for maintenance and installation. In addition, the existing crossarm length is fixed. If the crossarm needs to be increased after installation, the old crossarm needs to be removed and replaced with a new crossarm that meets the required length. This is not only time-consuming and labor-intensive, but also affects the normal operation of the circuit.

[0006] Therefore, the present application provides a safe corner tower conductor cross arm to meet the needs. Utility Model Content

[0007] The purpose of the utility model is to solve the problems existing in the above-mentioned background technology and to propose a safe corner tower conductor cross arm.

[0008] The technical problem to be solved by the utility model is to provide a safety-type corner tower conductor cross arm to solve the problems of the existing safety-type corner tower conductor cross arms.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0010] A safety-type corner tower conductor crossarm, comprising: a main crossarm, a connecting plate, a fixing seat, a connecting frame, a screw, an adjusting nut, an extension bracket, a rotating shaft and an auxiliary crossarm, wherein the surface of the main crossarm is provided with several groups of main mounting holes, the outer end of the main crossarm is installed with a connecting plate, the outer end of the connecting plate is installed with a fixing seat, the other end of the fixing seat is installed with a connecting frame, the inner side of the connecting frame is installed with a screw, the outer end of the screw is installed with an adjusting nut, the inner side of the main crossarm is installed with an extension bracket, the outer end of the extension bracket is installed with an auxiliary crossarm through a rotating shaft, the side of the auxiliary crossarm is provided with a movable groove, and the surface of the auxiliary crossarm is provided with several groups of secondary mounting holes.

[0011] Preferably, the connecting plate is rectangular and is located in the middle of the back side of the main cross arm.

[0012] Preferably, the fixing seat is in a "concave" shape, and a rectangular groove is provided on the inner side of the fixing seat, and the connecting plate is horizontally inserted into the groove of the fixing seat and fixed by bolts.

[0013] Preferably, the fixing seat and the connecting frame are in a "T" shape as a whole, and the screw rod vertically penetrates the connecting frame and extends outward to the upper and lower ends of the connecting frame.

[0014] Preferably, two groups of adjusting nuts are provided, and the two groups of adjusting nuts are respectively installed at the upper and lower ends of the connecting frame.

[0015] Preferably, the extension bracket extends horizontally outward from the inside of the main cross arm to the outer end of the main cross arm, and the auxiliary cross arm is movably connected to the extension bracket through a rotating shaft.

[0016] Preferably, two groups of auxiliary cross arms are provided, and the two groups of auxiliary cross arms are respectively located at the left and right ends of the extension bracket.

[0017] Preferably, the auxiliary crossarm has the same width and thickness as the main crossarm, and the auxiliary crossarms are respectively located at the left and right ends of the outer side of the main crossarm, and there is a gap between the end corners of the auxiliary crossarm and the main crossarm.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] 1. Two sets of auxiliary crossarms can be arranged at the outer ends of the main crossarms without affecting the use of the main crossarms and the layout of power equipment. The auxiliary crossarms can be offset and rotated outward from the left and right ends of the extension bracket, so as to be adjusted at the outer ends of the main crossarms. Not only can the auxiliary crossarms be adjusted to be on the same axis as the main crossarms, thereby increasing the length of the crossarms, but by adjusting the opening and closing angles of the auxiliary crossarms, the installation position can be offset inwards and outwards, thereby adjusting the position of the insulator strings, so that the conductors can return to their original direction or minimize the deviation as much as possible, making the line layout safer;

[0020] 2. The connecting frame can move up and down along the screw rod to adjust the height of the cross arm and then adjust the height of the insulator installed on the cross arm. The adjusting nut at the lower end of the connecting frame can support the connecting frame and fix it in the adjusted position, which is convenient for adjusting the cross arm. After the wires on the turret are connected to the insulators, the height of the insulator and the level of the wires can be directly adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable one skilled in the relevant art to make and use the present disclosure.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the specific structure of the main cross arm of the utility model;

[0024] Figure 3 This is a schematic diagram of the specific connection structure of the fixing seat and the connecting frame of the utility model;

[0025] Figure 4 This is a schematic diagram of the specific structure of the auxiliary cross arm of the utility model.

[0026] [reference numerals]

[0027] 1- Main cross arm; 2- Connecting plate; 3- Fixed seat; 4- Connecting frame; 5- Screw; 6- Adjusting nut; 7- Extension bracket; 8- Rotating shaft; 9- Auxiliary cross arm; 101- Main mounting hole; 901- Movable slot; 902- Auxiliary mounting hole.

[0028] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0029] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4A safety-type corner tower conductor crossarm is shown in an embodiment of the present utility model, comprising: a main crossarm 1, a connecting plate 2, a fixing seat 3, a connecting frame 4, a screw 5, an adjusting nut 6, an extension bracket 7, a rotating shaft 8 and an auxiliary crossarm 9. The surface of the main crossarm 1 is provided with several groups of main mounting holes 101, the outer end of the main crossarm 1 is installed with a connecting plate 2, the outer end of the connecting plate 2 is installed with a fixing seat 3, the other end of the fixing seat 3 is installed with a connecting frame 4, the inner side of the connecting frame 4 is installed with a screw 5, the outer end of the screw 5 is installed with an adjusting nut 6, the inner side of the main crossarm 1 is installed with an extension bracket 7, the outer end of the extension bracket 7 is installed with an auxiliary crossarm 9 through the rotating shaft 8, the side of the auxiliary crossarm 9 is provided with a movable groove 901, and the surface of the auxiliary crossarm 9 is provided with several groups of secondary mounting holes 902.

[0030] In this embodiment, the connecting plate 2 is rectangular and located in the middle of the back side of the main cross arm 1 , so that the horizontal line of the fixing seat 3 is lower than the main cross arm 1 to avoid affecting the layout of the circuit.

[0031] In this embodiment, the fixing seat 3 is in a "concave" shape, and a rectangular groove is provided on the inner side of the fixing seat 3. The connecting plate 2 is horizontally inserted into the groove of the fixing seat 3 and fixed by bolts, which can enhance the stability and strength between the entire cross arm and the corner tower.

[0032] In this embodiment, the fixing seat 3 and the connecting frame 4 are overall in a "T" shape, and the screw rod 5 vertically penetrates the connecting frame 4 and extends outward to the upper and lower ends of the connecting frame 4. The connecting frame 4 can move up and down along the screw rod 5, thereby adjusting the height of the cross arm, and then adjusting the height of the insulator installed on the cross arm.

[0033] In this embodiment, two groups of adjusting nuts 6 are provided, and the two groups of adjusting nuts 6 are respectively installed at the upper and lower ends of the connecting frame 4. The adjusting nuts 6 at the lower end of the connecting frame 4 can support the connecting frame 4 and fix it in the adjusted position, which is convenient for adjusting the crossarm. After the connection between the wires on the turret and the insulators is completed, the height of the insulator and the level of the wires can be directly adjusted.

[0034] In this embodiment, the extended bracket 7 extends horizontally outward from the inside of the main crossarm 1 to the outer end of the main crossarm 1, and the auxiliary crossarm 9 is movably connected to the extended bracket 7 through the rotating shaft 8. Two sets of auxiliary crossarms 9 can be arranged at the outer end of the main crossarm 1 without affecting the use of the main crossarm 1 for arranging electrical equipment.

[0035] In this embodiment, two groups of auxiliary crossarms 9 are provided, and the two groups of auxiliary crossarms 9 are respectively located at the left and right ends of the extension bracket 7. The auxiliary crossarms 9 can be offset and rotated outward from the left and right ends of the extension bracket 7, thereby being adjusted at the outer end of the main crossarm 1.

[0036] In this embodiment, the auxiliary crossarm 9 has the same width and thickness as the main crossarm 1. The auxiliary crossarm 9 is respectively located at the left and right ends of the outer side of the main crossarm 1, and there is a gap between the end corners of the auxiliary crossarm 9 and the main crossarm 1, which can avoid positional obstruction when installing power equipment. There is a gap between the end corners of the auxiliary crossarm 9 and the main crossarm 1, which can free up space for the auxiliary crossarm 9 to move. Not only can the auxiliary crossarm 9 and the main crossarm 1 be adjusted to be on the same axis, thereby increasing the length of the crossarm, but also by adjusting the opening and closing angles of the auxiliary crossarm 9, the installation position can be offset inwards and outwards, thereby adjusting the position of the insulator string, so that the conductor can return to its original direction or reduce the deviation as much as possible, making the line layout safer.

Claims

1. A safety corner tower conductor cross arm, characterized in that: include: A main cross arm (1), a connecting plate (2), a fixing seat (3), a connecting frame (4), a screw rod (5), an adjusting nut (6), an extension bracket (7), a rotating shaft (8) and an auxiliary cross arm (9); the surface of the main cross arm (1) is provided with a plurality of main mounting holes (101); the outer end of the main cross arm (1) is provided with a connecting plate (2); the outer end of the connecting plate (2) is provided with a fixing seat (3); the other end of the fixing seat (3) is provided with a connecting frame (4); the inner side of the connecting frame (4) is provided with a screw rod (5); the outer end of the screw rod (5) is provided with an adjusting nut (6); the inner side of the main cross arm (1) is provided with an extension bracket (7); the outer end of the extension bracket (7) is provided with an auxiliary cross arm (9) through a rotating shaft (8); the side of the auxiliary cross arm (9) is provided with a movable groove (901); the surface of the auxiliary cross arm (9) is provided with a plurality of secondary mounting holes (902).

2. The safety-type corner tower conductor cross arm according to claim 1, characterized in that: The connecting plate (2) is rectangular in shape, and is located in the middle of the back side of the main cross arm (1).

3. The safety-type corner tower conductor cross arm according to claim 1, characterized in that: The fixing seat (3) is in a concave shape, and a rectangular groove is provided on the inner side of the fixing seat (3). The connecting plate (2) is horizontally inserted into the groove of the fixing seat (3) and fixed by bolts.

4. The safety-type corner tower conductor cross arm according to claim 1, characterized in that: The fixing seat (3) and the connecting frame (4) are in a "T" shape as a whole, and the screw rod (5) vertically penetrates the connecting frame (4) and extends outward to the upper and lower ends of the connecting frame (4).

5. The safety-type corner tower conductor cross arm according to claim 1, characterized in that: Two groups of adjusting nuts (6) are provided, and the two groups of adjusting nuts (6) are respectively mounted on the upper and lower ends of the connecting frame (4).

6. The safety-type corner tower conductor cross arm according to claim 1, characterized in that: The extension bracket (7) extends horizontally outward from the inside of the main cross arm (1) to the outer end of the main cross arm (1), and the auxiliary cross arm (9) is movably connected to the extension bracket (7) via the rotating shaft (8).

7. The safety-type corner tower conductor cross arm according to claim 1, characterized in that: Two groups of auxiliary cross arms (9) are provided, and the two groups of auxiliary cross arms (9) are respectively located at the left and right ends of the extension bracket (7).

8. The safety-type corner tower conductor cross arm according to claim 1, characterized in that: The auxiliary cross arm (9) has the same width and thickness as the main cross arm (1). The auxiliary cross arm (9) is located at the left and right ends of the outer side of the main cross arm (1), and there is a gap between the end corners of the auxiliary cross arm (9) and the main cross arm (1).

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