Adjustable insulating cross arm

Abstract

The utility model discloses an adjustable insulating cross arm, which relates to the technical field of cross arms, and comprises a fixed cross arm and plug-in cross arms symmetrically arranged at the two ends of the fixed cross arm, and further comprises a protection assembly, the protection assembly comprises movable grooves symmetrically formed in the tops of the plug-in cross arms and supporting columns arranged in the movable grooves in a sliding manner, when the cable swings left and right due to large external wind power, the pulling force generated by the cable acts on the insulator to pull the connecting seat to move left and right, the connecting seat pulls the bending crank to bend outwards, at the moment, the tension spring is stretched, and the cable swings left and right. The tension spring and the bending crank form elastic support for the insulator, tension generated at the fixed end of the cable and the insulator can be effectively absorbed, so that the tension of the cable in the swinging process is reduced, the cable is well protected, the device is small in structure and efficient in performance, the risk of cable breakage can be effectively reduced, and the service life of the cable is prolonged. And potential safety hazards during use are eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of cross arms, in particular to an adjustable insulating cross arm. Background Art

[0002] The crossarm is an important component of the pole tower. Its function is to install insulators and hardware to support the conductors and lightning conductors and keep them at a certain safety distance as required.

[0003] The Chinese patent authorization announcement number is CN204663124U, and the name is a new cross arm, which includes a strip-shaped connecting block, and the connecting block is made of steel material. The centers of the two end faces of the connecting block are provided with a rectangular parallelepiped connecting part, and the two connecting parts are sleeved with a rectangular tubular positioning sleeve. The side walls around the connecting block are flush with the side walls around the positioning sleeve. The positioning sleeve is made of composite materials. The upper side and lower side of the positioning sleeve near the end of the connecting block are provided with a plate-shaped protruding solid section. The front side of the connecting block is provided with a circular through hole, and there are two through holes and they are distributed along the axial direction of the connecting block. The solid section is penetrated with a threaded hole along the axial direction of the positioning sleeve. The two opposite solid sections are connected by a bolt that is screwed into the corresponding two threaded holes at the same time, and have the advantage of strong bending resistance;

[0004] The disadvantages of the above-mentioned prior art solution are that: although the above-mentioned solution has strong bending resistance, during the use of the crossarm, the insulator is fixedly installed on it, and the cable is fixedly mounted by the insulator. In the case of strong wind, the cable is easy to swing left and right. At this time, the fixation of the cable by the insulator will make the cable in a taut state, which leads to a greater risk of cable breakage and poses certain safety hazards. Utility Model Content

[0005] The purpose of the utility model is to provide an adjustable insulating cross arm to solve the technical problems mentioned in the above background technology.

[0006] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0007] An adjustable insulating cross arm comprises a fixed cross arm and plug-in cross arms symmetrically arranged at both ends of the fixed cross arm;

[0008] It also includes a protection component, which includes a movable groove symmetrically opened at the top of the plug-in crossarm, a support column slidably arranged inside the movable groove, a connecting seat arranged at the top of the support column, and the diameter of the connecting seat is greater than the length of the movable groove, a partition symmetrically arranged inside the plug-in crossarm, and the partition is located at both ends of the movable groove, a hinge seat symmetrically arranged on one side of the partition close to each other, a bending crank rotatably arranged between the hinge seats, and a plurality of groups of spaced tension springs arranged between the bending cranks.

[0009] As a further solution of the utility model: a plug is arranged inside the connecting seat, and an insulator is arranged on the top of the plug.

[0010] As a further solution of the utility model: fixing pins for fixing the plug-in cross arm are arranged at both ends of the fixed cross arm, and anti-drop screws for fixing the plug are arranged on the outer side of the connecting seat.

[0011] As a further solution of the utility model: an extrusion plate is symmetrically arranged on one side of the fixed cross arm, and the shape of the extrusion plate is a triangle.

[0012] As a further solution of the utility model: a clamping hoop is provided through the inner side of the fixed cross arm, an anti-slip splint is welded to the middle of the clamping hoop, and the shape of the clamping hoop is a flat arc.

[0013] Beneficial effects of the utility model:

[0014] The utility model can form a stable fixed installation for the cable, and when the external wind force is strong and causes the cable to swing left and right, the pulling force generated by the cable acts on the insulator to pull the connecting seat to move left and right, and the connecting seat pulls the bending crank to bend outward, at this time the tension spring is stretched, and the insulator is elastically supported by the tension spring and the bending crank, which can effectively absorb the pulling force generated at the fixed end of the cable and the insulator, thereby reducing the pulling force of the cable during the swinging process and forming good protection for the cable. The device has a compact structure and high performance, can effectively reduce the risk of cable breakage, and eliminates safety hazards during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a three-dimensional schematic diagram of the whole device in the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the extruded plate in the utility model;

[0018] Figure 3 It is a schematic diagram of the protective component in the utility model.

[0019] In the figure: 1. Fixed cross arm; 2. Plug-in cross arm; 3. Movable groove; 4. Support column; 5. Connecting seat; 6. Partition; 7. Articulated seat; 8. Bending crank; 9. Tension spring; 10. Plug; 11. Insulator; 12. Fixing pin; 13. Anti-slip screw; 14. Extrusion plate; 15. Holding hoop; 151. Anti-slip splint. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-3 As shown, an adjustable insulating cross arm comprises a fixed cross arm 1 and a plug-in cross arm 2 symmetrically arranged at both ends of the fixed cross arm 1, a plug 10 is arranged inside the connecting seat 5, an insulator 11 is arranged at the top of the plug 10, fixing pins 12 for fixing the plug-in cross arm 2 are arranged at both ends of the fixed cross arm 1, an anti-drop screw 13 for fixing the plug 10 is arranged on the outer side of the connecting seat 5, an extrusion plate 14 is symmetrically arranged on one side of the fixed cross arm 1, and the shape of the extrusion plate 14 is triangular, a clamping hoop 15 is penetrated on the inner side of the fixed cross arm 1, an anti-slip splint 151 is welded in the middle of the clamping hoop 15, and the shape of the clamping hoop 15 is a flat arc The fixed cross arm 1 and the plug-in cross arm 2 are fixed by a fixing pin 12, and the two are detachable. The staff can assemble the plug-in cross arm 2 according to the actual installation needs on site, so as to adjust the number of cables to be installed. The device can be fixed on the pole tower by the clamping hoop 15. The triangular extrusion plate 14 cooperates with the flat arc-shaped anti-slip clamp 151 to further increase the extrusion force and contact area between the clamping hoop 15 and the pole tower, thereby increasing the friction force and ensuring the stability of the device as a whole when in use. The insulator 11 provided can form a fixed installation for the cable, ensuring the stability of the cable when in use;

[0022] The protective assembly also includes a movable groove 3 symmetrically opened at the top of the plug-in crossarm 2, a support column 4 slidably arranged inside the movable groove 3, a connecting seat 5 arranged at the top of the support column 4, and the diameter of the connecting seat 5 is greater than the length of the movable groove 3, a partition 6 symmetrically arranged inside the plug-in crossarm 2, and the partition 6 is located at both ends of the movable groove 3, a hinge seat 7 symmetrically arranged on the side close to each other of the partition 6, a bending crank 8 rotatably arranged between the hinge seats 7, and a plurality of groups of tension springs 9 arranged between the bending cranks 8. An insulator 11 is threadedly fixed in the connecting seat 5, and the diameter of the connecting seat 5 is greater than the length of the movable groove 3. In daily use, the movable groove 3 can be covered. In order to prevent foreign matter from falling into the interior of the plug-in crossarm 2 to the greatest extent, when the external wind force is strong and causes the cable to swing left and right, the tension generated by the cable will act on the insulator 11, thereby the insulator 11 will pull the connecting seat 5 to move left and right, and the connecting seat 5 will drive the bending crank 8 to bend outward during the movement, and the tension spring 9 will be stretched during the bending process of the bending crank 8. The tension spring 9 can absorb the tension generated at the fixed end of the cable and the insulator 11 during the stretching process, thereby reducing the tension of the cable during the swinging process and forming a good protection for the cable. In the absence of external force, the tension spring 9 pulls the bending crank 8 to shrink inward, thereby forming a good supporting effect on the insulator 11.

[0023] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. An adjustable insulating cross arm, comprising a fixed cross arm (1) and plug-in cross arms (2) symmetrically arranged at both ends of the fixed cross arm (1); characterized in that: The invention also comprises a protection component, which comprises a movable groove (3) symmetrically arranged at the top of the plug-in cross arm (2), a support column (4) slidably arranged inside the movable groove (3), a connecting seat (5) arranged at the top of the support column (4), and the diameter of the connecting seat (5) is greater than the length of the movable groove (3), a partition (6) symmetrically arranged inside the plug-in cross arm (2), and the partition (6) is located at both ends of the movable groove (3), a hinge seat (7) symmetrically arranged on the side close to each other of the partition (6), a bending crank (8) rotatably arranged between the hinge seats (7), and a plurality of groups of tension springs (9) arranged between the bending cranks (8) and distributed at intervals.

2. The adjustable insulating cross arm according to claim 1, characterized in that: A plug (10) is arranged inside the connection seat (5), and an insulator (11) is arranged at the top end of the plug (10).

3. The adjustable insulating cross arm according to claim 1, characterized in that: Both ends of the fixed cross arm (1) are provided with fixing pins (12) for fixing the plug-in cross arm (2), and the outer side of the connecting seat (5) is provided with anti-drop screws (13) for fixing the plug (10).

4. The adjustable insulating cross arm according to claim 1, characterized in that: An extrusion plate (14) is symmetrically arranged on one side of the fixed cross arm (1), and the shape of the extrusion plate (14) is a triangle.

5. The adjustable insulating cross arm according to claim 1, characterized in that: A clamping hoop (15) is provided through the inner side of the fixed cross arm (1), an anti-slip splint (151) is welded to the middle of the clamping hoop (15), and the shape of the clamping hoop (15) is a flat arc.

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