Vibration reduction composite cross arm

Abstract

The utility model relates to the technical field of power transmission line engineering, and provides a vibration reduction composite cross arm which comprises a pair of sleeve frames, a fixing assembly arranged between the sleeve frames, a vibration reduction installation assembly arranged between the cross arm and the sleeve frames and comprising an outer groove, a pair of round rods arranged in the outer groove, and an adjusting frame connected to the outer portions of the round rods in a sleeved mode. The outer portion of the round rod is movably sleeved with a sliding block, and the two ends of the outer portion of the round rod are sleeved with first springs. According to the technical scheme, the problems that a large amount of operation time is needed when a cross arm is replaced every time in an existing installation mode in the related technology, heavy loss is caused to regional economy due to long-time operation, aeolian vibration of a power transmission line wire acts on a composite cross arm through an insulator chain, the composite cross arm does not have a vibration reduction function, and the cross arm is damaged are solved. And fatigue damage is easily caused due to long-term bearing of the high-frequency low-amplitude external force, and the service life is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission line engineering, and specifically to a vibration-damping composite cross arm. Background Art

[0002] In the transmission pole, the cross arm of the pole is a very important component. It plays an important role in connecting the pole body, supporting the insulator string to suspend the conductor, and maintaining the electrical distance between the conductor and the pole body. Due to its light weight, excellent electrical performance, and reducing the amount of steel used in the power grid transmission system, the FRP composite cross arm is widely used in transmission towers, which is one of the current directions of power grid development and construction. In order to ensure safe and stable operation, the composite cross arm needs to be replaced after reaching a certain service life. The current installation method requires a lot of operation time every time the cross arm is replaced. Long-term operation will cause significant losses to the regional economy. The breeze vibration of the transmission line conductor will act on the composite cross arm through the insulator string. The composite cross arm does not have a vibration reduction function and is very easy to suffer fatigue damage due to long-term exposure to this high-frequency and low-amplitude external force, reducing the service life and service life.

[0003] Therefore, improvements are made to address the above problems. Utility Model Content

[0004] The utility model proposes a vibration-damping composite cross-arm, which solves the problem that the current installation method in the related technology requires a lot of operation time each time the cross-arm is replaced. The long operation will cause significant losses to the regional economy. The breeze vibration of the transmission line conductor will act on the composite cross-arm through the insulator string. The composite cross-arm does not have a vibration-damping function and is very likely to suffer fatigue damage due to long-term exposure to this high-frequency and low-amplitude external force, thereby reducing the service life and service life.

[0005] The technical solution of the utility model is as follows:

[0006] A pair of sleeve frames, with a fixing assembly disposed between the sleeve frames;

[0007] A cross arm and a shock-absorbing mounting assembly, wherein the shock-absorbing mounting assembly is arranged between the cross arm and the sleeve frame, the shock-absorbing mounting assembly includes an outer groove, a pair of round rods are arranged in the outer groove, the outer part of the round rods is sleeved and connected with an adjustment frame, the outer part of the round rods is movably sleeved and connected with a sliding block, and both ends of the outer part of the round rods are sleeved and connected with a first spring.

[0008] As a further technical solution, an adjusting screw is rotatably connected to the inner bottom of the outer groove, the upper end of the adjusting screw is connected to the adjusting frame by threaded cooperation, the outer end of the sliding block is fixedly connected to a cross seat, a pair of limiting protrusions are provided on the surface of the cross seat, and a positioning groove is provided on the surface of the cross arm, and the positioning groove is mounted on the outside of the limiting protrusion.

[0009] As a further technical solution, a locking frame is rotatably connected to the surface of the cross seat, and the locking frame is located between the limit protrusions. The locking frame is sleeved in the positioning groove. Slots are provided on both end surfaces of the cross seat, and an extension frame is inserted into the slot, and one end of the extension frame is sleeved on one end of the cross arm.

[0010] As a further technical solution, the fixing assembly includes a pair of fixing blocks, which are fixed at the top and bottom ends of the sleeve frame. A through hole is opened in the fixing block, and a double-headed screw is inserted and connected in the through hole. Both ends of the double-headed screw are screwed and connected with fixing nuts.

[0011] As a further technical solution, a plurality of second springs are arranged on the inner surface of the sleeve frame, one end of the second spring is connected to a sleeve plate, and the sleeve plate is a semicircular C-shaped structure.

[0012] As a further technical solution, one end of the extension frame is a hook-shaped structure bent inwardly.

[0013] As a further technical solution, the thread directions at both ends of the double-headed screw are respectively a positive helix and a reverse helix.

[0014] As a further technical solution, the bottom of the horizontal seat extends to one side, and the cross section of the horizontal seat is an L-shaped structure.

[0015] The working principle and beneficial effects of the utility model are:

[0016] 1. The utility model is provided with a shock-absorbing mounting assembly. Through the interaction of structures such as the outer groove, the round rod, the adjustment frame, the first spring, the adjustment screw, the cross seat, the locking frame, the slot and the extension frame, the cross arm can be directly connected to the cross seat set without screws. The locking frame can lock the cross arm after rotating 90°, and can quickly fix the cross arm. The locking frames with hook-shaped structures at both ends can be used to tighten the cross arm, which has a good firm effect. The loading and unloading method is simple and convenient, and no tools are required. It has a good use effect and practicality.

[0017] 2. The utility model is provided with a fixing assembly, which can be firmly fixed on the pole through the interaction of structures such as a fixing block, a double-headed screw, a fixing nut, a second spring and a sleeve plate. The elastic force of the second spring can enhance the firmness and prevent sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is an axonometric sectional view of the utility model;

[0021] Figure 3 This is the axonometric drawing of the utility model;

[0022] Figure 4 This is a cross-sectional view of the utility model;

[0023] Figure 5 This is an axonometric drawing from another perspective of the utility model;

[0024] Figure 6 For the utility model Figure 3 A partial enlarged view of part A;

[0025] In the figure: 1. sleeve frame; 2. cross arm; 3. shock-absorbing mounting assembly; 3-1. outer groove; 3-2. round rod; 3-3. adjustment frame; 3-4. sliding block; 3-5. first spring; 3-6. adjusting screw; 3-7. cross seat; 3-8. limiting protrusion; 3-9. positioning groove; 3-10. locking frame; 3-11. slot; 3-12. extension frame; 4. fixing assembly; 4-1. fixing block; 4-2. through hole; 4-3. double-headed screw; 4-4. fixing nut; 4-5. second spring; 4-6. sleeve plate. DETAILED DESCRIPTION

[0026] The following will be combined with 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.

[0027] like Figure 1 to Figure 6 As shown, this embodiment proposes a vibration-damping composite cross arm, including

[0028] A pair of sleeve frames 1, with a fixing assembly 4 disposed between the sleeve frames 1;

[0029] The cross arm 2 and the shock-absorbing mounting assembly 3 are arranged between the cross arm 2 and the sleeve frame 1. The shock-absorbing mounting assembly 3 includes an outer groove 3-1, a pair of round rods 3-2 are arranged in the outer groove 3-1, the outer sleeve of the round rod 3-2 is connected with an adjustment frame 3-3, the outer sleeve of the round rod 3-2 is connected with a sliding block 3-4, the outer ends of the round rod 3-2 are connected with a first spring 3-5, the bottom of the outer groove 3-1 is rotatably connected with an adjusting screw 3-6, the upper end of the adjusting screw 3-6 is connected to the adjusting frame 3-3 by threaded cooperation, and the sliding block 3-4 is connected with the adjusting screw 3-6. The outer end is fixedly connected with a cross seat 3-7, and a pair of limiting protrusions 3-8 are arranged on the surface of the cross seat 3-7. A positioning groove 3-9 is provided on the surface of the cross arm 2, and the positioning groove 3-9 is sleeved on the outside of the limiting protrusion 3-8. A locking frame 3-10 is rotatably connected with the surface of the cross seat 3-7, and the locking frame 3-10 is located between the limiting protrusions 3-8. The locking frame 3-10 is sleeved in the positioning groove 3-9. Slots 3-11 are provided on both end surfaces of the cross seat 3-7, and an extension frame 3-12 is inserted and connected in the slot 3-11, and one end of the extension frame 3-12 is sleeved on one end of the cross arm 2.

[0030] In this embodiment, in order to achieve fast loading and unloading of the cross arm 2 and have a shock-absorbing effect, a fixing component 4 is designed. An outer groove 3-1 is opened on the side surface of the sleeve 1, and round rods 3-2 are arranged on both sides of the inner part of the outer groove 3-1. A sliding block 3-4 is sleeved on the outer part of the round rod 3-2, and two first springs 3-5 are sleeved on the outer part of the round rod 3-2, which are located at both ends of the sliding block 3-4, so that the sliding block 3-4 can move vertically up and down on the surface of the round rod 3-2. The outer end of the sliding block 3-4 is fixedly connected with a cross seat 3-7, so that the cross seat 3-7 can achieve a shock-absorbing effect. An adjusting frame 3-3 is sleeved and connected at the lower end of the round rod 3-2, and an adjusting screw 3-6 is also rotatably connected in the outer groove 3-1. The adjusting screw 3-6 is connected to the adjusting frame 3-3 by threaded cooperation. The adjusting screw 3-6 can be screwed to control the height of the adjusting frame 3-3, and the first spring 3-5 is squeezed by the height change. The closer the contraction is, the greater the elastic force is, and the degree of shock absorption can be adjusted. A plurality of groups of limit protrusions 3-8 are arranged on the surface of the cross frame, and two limit protrusions 3-8 form a group. A positioning groove 3-9 is provided on the surface of the cross arm 2, and the positioning groove 3-9 can be connected with the limit protrusion 3-8. The limit protrusion 3-8 is supported at both ends in the positioning groove 3-9, so that the cross arm 2 is fixed and cannot shake left and right. A locking frame 3-10 is rotatably connected to the surface of the cross seat 3-7 between the protrusions, and the locking frame 3-10 can pass through the positioning groove 3-9. The locking frame 3-10 can rotate laterally, and after the horizontal rotation, it will be pressed on the surface of the cross arm 2, thereby fixing the cross arm 2. Slots 3-11 are provided at both ends of the cross seat 3-7, and an extension frame 3-12 is inserted and connected in the slot 3-11. One end of the extension frame 3-12 can be fitted on the cross arm 2, and the extension frame 3-12 is inserted into the slot 3-11 while tightly fitting the cross arm 2, so that it can be quickly loaded and unloaded.

[0031] Furthermore, the fixing assembly 4 includes a pair of fixing blocks 4-1, which are fixed at the top and bottom ends of the sleeve frame 1. A through hole 4-2 is opened in the fixing block 4-1, and a double-headed screw 4-3 is inserted and connected in the through hole 4-2. Both ends of the double-headed screw 4-3 are screwed and connected with fixing nuts 4-4. A plurality of second springs 4-5 are arranged on the inner surface of the sleeve frame 1, and one end of the second spring 4-5 is connected to a sleeve plate 4-6, and the sleeve plate 4-6 is a semicircular C-shaped structure.

[0032] In this embodiment, in order to achieve a firm fixing effect with the pole, a fixing component 4 is designed, and a fixing block 4-1 with a through hole 4-2 is provided at the top and the top of the sleeve 1. A double-headed screw 4-3 can be inserted into the through hole 4-2, and a fixing nut 4-4 can be screwed to fix the two sleeves 1. A second spring 4-5 is provided inside the sleeve 1 and is connected with a sleeve plate 4-6. After the sleeve 1 is connected, it can be clamped on the pole through the sleeve plate 4-6 and cooperate with the second spring 4-5 to increase the firmness.

[0033] Furthermore, one end of the extension frame 3-12 is a hook-shaped structure bent inward.

[0034] In this embodiment, through the bent hook structure, one end of the extension frame 3-12 can be tightly wrapped around the cross arm 2 to further fix the cross arm 2.

[0035] Furthermore, the thread directions at both ends of the double-headed screw 4-3 are respectively a positive helix and a reverse helix.

[0036] In this embodiment, two fixing nuts 4 - 4 are installed at the same time through the thread structure of the positive helix and the reverse helix, and can be screwed in opposite directions, which is convenient for installation and fixing.

[0037] Furthermore, the bottom of the cross seat 3-7 extends to one side, and the cross section of the cross seat 3-7 is an L-shaped structure.

[0038] In this embodiment, the bottom of the cross seat 3 - 7 is extended outward through the L-shaped structure, which can drag the bottom of the cross arm 2 and improve the load-bearing capacity of the cross arm 2.

[0039] When installation is required, put the two sleeves 1 on the pole, pass the double-headed screw 4-3 through the through hole 4-2 of the fixing block 4-1, screw the fixing nuts 4-4 at both ends to fix the sleeve 1, and squeeze the second spring 4-5 to make the sleeve 4-6 completely clamp the pole, then install the cross arm 2, put the cross arm 2 on the limit convex block 3-8 through the positioning groove 3-9, then turn the locking frame 3-10 to rotate 90° to clamp the cross arm 2, then fit the extension frame 3-12 on the back of the cross arm 2 and insert it into the slot 3-11 When the cable is fully inserted, the other end can be tightly sleeved on the cross arm 2. When disassembling and replacing, pull out the extension frame 3-12 and then turn the locking frame 3-10 in sequence. During use after safety is completed, when vibration occurs, the sliding block 3-4 can be supported by the first spring 3-5 to make the sliding block 3-4 move up and down on the surface of the round rod 3-2 to achieve a shock absorbing effect. When the cable is too heavy, the adjusting screw 3-6 at the bottom can be turned to move the adjusting frame 3-3 upwards and squeeze the first spring 3-5 to make the elastic force at the upper and lower ends uniform.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vibration-damping composite cross arm, characterized in that: include A pair of sleeve frames (1), with a fixing assembly (4) disposed between the sleeve frames (1); A cross arm (2) and a shock-absorbing mounting assembly (3), wherein the shock-absorbing mounting assembly (3) is arranged between the cross arm (2) and the sleeve frame (1), and the shock-absorbing mounting assembly (3) comprises an outer groove (3-1), a pair of round rods (3-2) are arranged in the outer groove (3-1), the outer parts of the round rods (3-2) are sleevedly connected to an adjustment frame (3-3), the outer parts of the round rods (3-2) are movably sleevedly connected to a sliding block (3-4), and the outer ends of the round rods (3-2) are sleevedly connected to a first spring (3-5).

2. The vibration-damping composite cross arm according to claim 1, characterized in that: The inner bottom of the outer groove (3-1) is rotatably connected with an adjusting screw (3-6), the upper end of the adjusting screw (3-6) is connected to the adjusting frame (3-3) by threaded cooperation, the outer end of the sliding block (3-4) is fixedly connected with a cross seat (3-7), the surface of the cross seat (3-7) is provided with a pair of limiting protrusions (3-8), the surface of the cross arm (2) is provided with a positioning groove (3-9), and the positioning groove (3-9) is sleeved on the outside of the limiting protrusion (3-8).

3. The vibration-damping composite cross arm according to claim 2, characterized in that: The surface of the cross seat (3-7) is rotatably connected with a locking frame (3-10), the locking frame (3-10) is located between the limiting protrusions (3-8), the locking frame (3-10) is sleeved in the positioning groove (3-9), both end surfaces of the cross seat (3-7) are provided with slots (3-11), an extension frame (3-12) is inserted and connected in the slot (3-11), and one end of the extension frame (3-12) is sleeved on one end of the cross arm (2).

4. The vibration-damping composite cross arm according to claim 1, characterized in that: The fixing assembly (4) comprises a pair of fixing blocks (4-1), the fixing blocks (4-1) being fixed at the top and bottom ends of the sleeve frame (1), the fixing blocks (4-1) being provided with through holes (4-2), the through holes (4-2) being inserted and connected with double-headed screws (4-3), and both ends of the double-headed screws (4-3) being screwed and connected with fixing nuts (4-4).

5. The vibration-damping composite cross arm according to claim 4, characterized in that: A plurality of second springs (4-5) are arranged on the inner surface of the sleeve frame (1); one end of the second spring (4-5) is connected to a sleeve plate (4-6); and the sleeve plate (4-6) is in a semicircular C-shaped structure.

6. The vibration-damping composite cross arm according to claim 3, characterized in that: One end of the extension frame (3-12) is a hook-shaped structure bent inwards.

7. The vibration-damping composite cross arm according to claim 4, characterized in that: The thread directions of the two ends of the double-headed screw (4-3) are respectively a positive helix and a reverse helix.

8. The vibration-damping composite cross arm according to claim 2, characterized in that: The bottom of the cross seat (3-7) extends to one side, and the cross section of the cross seat (3-7) is in an L-shaped structure.

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