Anti-loosening crimping type strain clamp with corrugated structure and anti-loosening method

Abstract

The invention discloses an anti-loosening crimping type strain clamp with a corrugated structure and an anti-loosening method, the anti-loosening crimping type strain clamp comprises a drainage plate, a jumper drainage rod, a first nut and a first bolt, the drainage plate is of a concave structure, and the inner wall of the drainage plate is provided with concave corrugations; the upper and lower surfaces of the end of the jumper drainage rod are convex ripples; after the jumper drainage rod is inserted into the drainage plate, the concave corrugations and the convex corrugations are mutually embedded, and the jumper drainage rod and the drainage plate are locked through the first nut and the first bolt. According to the anti-loosening crimping type strain clamp with the corrugated structure provided by the invention, a drainage wire clamp can be prevented from loosening.

Description

Technical Field

[0001] The invention relates to a tension wire clamp, in particular to an anti-loosening type crimping type tension wire clamp with a corrugated structure and an anti-loosening method, which is suitable for an anti-loosening type connecting hardware for dynamic capacity increase of overhead power transmission lines. Background Art

[0002] The crimped tension clamp is a kind of electrical hardware widely used in overhead transmission lines. It is used to fix the conductor and bear its tension, and suspend the conductor on the tension string group of the tension tower to ensure the safe and stable operation of the line. However, in the actual operation of overhead transmission lines, conductor dancing and insulator string slant often occur, which will cause the drain plate of the crimped tension clamp to loosen. When the line is dynamically increased in capacity or the current passing through is large, the loose part is very likely to cause heating failure and other problems due to the large contact resistance, which will then pose a serious threat to the safe and stable operation of the line.

[0003] At present, the relevant research on anti-loosening type tension clamps for overhead transmission lines includes: (1) Invention patent "Anti-loosening type tension clamp" (application number: 201910843700.X): This patent includes a clamp body, a drainage body and an anti-loosening and tightening device. The drainage body includes a fixed drainage rod, a jumper drainage rod and a connecting nut arranged on the jumper drainage rod. The lower end surface of the fixed drainage rod is provided with a conical plug-in hole. The jumper drainage rod includes a conical plug-in rod inserted in the conical plug-in hole. The anti-loosening and tightening device includes a radial through hole arranged on the fixed drainage rod, an annular groove arranged on the outer side surface of the conical plug-in rod, a sliding main rod slidably arranged in the radial through hole, a guide hole arranged on the inner end surface of the sliding main rod, a sliding push rod slidably arranged in the guide hole and a push mechanism. Obviously, the anti-loosening type tension clamp has a relatively complex structure and is not suitable for high-altitude installation by power operation and maintenance personnel at the line site.

[0004] (2) Invention patent "Anti-loosening type tension clamp" (application number: 202311010629.X): This patent consists of a double locking and anti-loosening mechanism composed of a two-way control and adjustment locking and anti-loosening component and an anti-carding flexible buffer component. Through the cooperation between the two, the conductor can be effectively locked and anti-loosening. However, this patent is for a bolt-type tension clamp, not a crimped tension clamp, and its components such as a two-way operation and adjustment control mechanism, a linkage offset anti-carding mechanism, and a rotation mechanism are relatively complex in structure and difficult to process.

[0005] (3) Invention patent "Anti-loosening and tension-resistant wire clamp" (application number: 202410755447.3): This patent includes a wire clamp shell, on which a concave U-shaped clamp and a convex U-shaped clamp are provided, and a plurality of bottom holes of a wire clamping plate are provided at the bottom of the wire clamp shell. Both the convex U-shaped clamp and the concave U-shaped clamp are composed of a U-shaped bolt, a pressure block and a pad. The pad is supported at the bottom of the wire clamping plate, and the U-shaped bolt is connected to the pad by a nut. The upper and lower ends of the pressure block are respectively supported on the U-shaped bolt and the wire. The pad is provided with a pad vertical hole at the position corresponding to the bottom hole of the wire clamping plate, and a pressing piece is provided in the pad vertical hole. A top cap for lifting the wire upward is provided at the top of the pressing piece. The pressing piece includes a bolt shell, and an inner column that slides up and down is provided inside the bolt shell. The top of the inner column is connected to the top cap, and a self-locking structure is provided on the side of the inner column. The self-locking structure of this patent is difficult to process and is difficult to be applied in practice. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a loose-proof crimping type tension wire clamp with a corrugated structure and a loose-proof method. The drainage plate is designed as a concave structure, and the inner walls of the double plates are provided with concave corrugations on both sides. The surface of the jumper drainage rod is designed with convex corrugations. After the drainage rod is inserted into the drainage plate, the concave and convex corrugations are embedded in each other to achieve the dual purpose of increasing the contact area between the drainage plate and the drainage rod and preventing the drainage wire clamp from loosening. In addition, the connecting nut between the drainage plate and the drainage rod adopts a double nut type to achieve the second layer of loose-proof effect.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: A loose-proof crimping type tension-resistant wire clamp with a corrugated structure, comprising a drain plate, a jumper drain rod, a first nut and a first bolt. The drain plate is a concave structure and has concave corrugations on the inner wall; the upper and lower surfaces of the end of the jumper drain rod are convex corrugations; after the jumper drain rod is inserted into the drain plate, the concave corrugations and the convex corrugations are interlocked, and the jumper drain rod and the drain plate are locked by the first nut and the first bolt.

[0008] The first nut is a double nut.

[0009] The end of the jumper drainage rod and the drainage plate are both plate-shaped, and the concave corrugations and convex corrugations are both wave-shaped.

[0010] The guide plate is a double-plate structure.

[0011] The first bolt end is fixed with a sleeve, and the inner wall of the sleeve has through holes on the left and right sides. The screw passes through the left and right through holes and is threadedly connected with the second nut. The other end of the screw is fixed on the connecting plate, and the connecting plate is installed on the jumper drainage rod.

[0012] The connecting plate is L-shaped, and one side of the connecting plate abuts against the end of the guide plate.

[0013] A limiting sleeve is fixed at the through hole on one side, and a spring is fixed at the through hole on the other side, and the spring is connected to the round table; the screw rod passes through the limiting sleeve, the round table and the spring, and the round table is pressed tightly in the limiting sleeve by the spring and holds the screw rod tightly.

[0014] The truncated table is a rubber block, and a slit is arranged on the side wall of the rubber block.

[0015] The limiting sleeve is provided with an inserting hole with a small diameter at one end and a large diameter at the other end.

[0016] A method for preventing loosening of a crimped tension clamp with a corrugated structure, comprising the following steps: Step 1: During installation, insert the jumper wire drainage rod into the drainage plate until the convex corrugations of the jumper wire drainage rod and the concave corrugations of the drainage plate are embedded in place; Step 2: Insert the first bolts into the two sets of bolt holes on the same side, with the ends of the two sets of first bolts facing up and down respectively; since the sleeve size is smaller than the diameter of the first bolt, the first tightening can be performed after the first nut is screwed in; Step 3: Unscrew the cap, press the round table to the right and compress the spring; then extend the screw horizontally into the sleeve from the through hole on the left, and the screw passes through the round table, the spring and extends out of the through hole on the right to be threadedly connected with the second nut; Step 4: Loosen the round table. Under the action of the spring, the round table is pushed into the limit sleeve and locked; at the same time, the round table also holds the screw tightly to limit the screw from moving to the left.

[0017] The present invention provides an anti-loosening type crimping type tension wire clamp with a corrugated structure and an anti-loosening method, which has the following technical effects: 1) The double-board-single-board structure can be used to shunt the current and reduce resistance heating. Concave corrugations are set on the double-board and convex corrugations are set on the single-board. The corrugations are used together to achieve the first layer of anti-loosening effect of the drainage plate and the jumper drainage rod; when fixed with double nuts, the second layer of anti-loosening effect is achieved.

[0018] 2) By arranging a secondary locking and anti-loosening mechanism such as a sleeve and a screw on the screw, the secondary locking and anti-loosening mechanism can first limit the rotation and up and down movement of the first bolt to prevent the first bolt from loosening or falling out; secondly, after the two first nuts rotate, the screw plays the role of upper and lower limit, which can limit the first nut from screwing out of the first bolt; secondly, when the jumper drain rod is pulled outward relative to the drain plate, since the connecting plate on the jumper drain rod is connected to the first bolt through the secondary locking and anti-loosening mechanism, it can further play an anti-loosening role to prevent the jumper drain rod and the drain plate from being relatively separated. That is, the secondary locking and anti-loosening mechanism can realize the locking and limiting of the first bolt and the first nut; at the same time, through the connection of the connecting plate, the jumper drain rod, the connecting plate and the first bolt form a whole, and the limiting locking can be achieved even when the first nut is loose. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the structure of the present invention (first type).

[0020] Figure 2 This is a cross-sectional view of the present invention (second type).

[0021] Figure 3 for Figure 2 A local enlarged schematic diagram of point A in the middle.

[0022] Figure 4 It is a schematic structural diagram of the truncated table of the present invention.

[0023] In the figure: drainage plate 1, concave corrugation 1.1, jumper drainage rod 2, convex corrugation 2.1, first nut 3, first bolt 4, sleeve 5, cap 6, through hole 7, limit sleeve 8, spring 9, screw rod 10, second nut 11, round table 12, connecting plate 13. DETAILED DESCRIPTION

[0024] Example 1 like Figure 1 As shown, an anti-loosening type crimped tension clamp with a corrugated structure includes a drain plate 1, a jumper drain rod 2, a first nut 3 and a first bolt 4. The drain plate 1 is a concave structure and the inner wall has a concave corrugation 1.1; the upper and lower surfaces of the end of the jumper drain rod 2 are convex corrugations 2.1; after the jumper drain rod 2 is inserted into the drain plate 1, the concave corrugations 1.1 and the convex corrugations 2.1 are interlocked.

[0025] The first nut 3 uses a double nut.

[0026] Before installation, four bolt holes should be punched in advance on the drain plate 1 and the jumper drain rod 2. When the two are assembled, their bolt holes will be aligned so that the bolts can pass through the bolt holes and be tightened by the first nut 3.

[0027] During installation, the jumper drain rod 2 is inserted into the drain plate 1 until the convex corrugations 2.1 of the jumper drain rod 2 and the concave corrugations 1.1 of the drain plate 1 are embedded in each other, and then the first bolts 4 are inserted into the four bolt holes and fixed with double nuts to achieve a double anti-loosening effect.

[0028] Example 2 like Figure 2-4As shown, different from the above-mentioned embodiment 1, a large-diameter first bolt 4 is used, and a sleeve 5 is welded to the end of the first bolt 4 (located on the side of the first nut 3), the upper end of the sleeve 5 is open and threadedly connected with a cap 6, and the side walls of the sleeve 5 are opened with through holes 7 on the left and right, and a limiting sleeve 8 is fixed on the inner wall of the through hole 7 on the left side, and the limiting sleeve 8 is a plug hole with a small diameter at one end and a large diameter at the other end. A spring 9 is fixed to the other end of the sleeve 5 that is opposite to the limiting sleeve 8, and a round table 12 is fixed to the end of the spring 9. The screw 10 passes through the through hole 7 on the left, the limiting sleeve 8, the round table 12, the spring 9 and the through hole 7 on one side of the spring 9, and is threadedly connected to the second nut 11. The round table 12 is tightened in the plug hole of the limiting sleeve 8 by the spring 9. The other end of the screw 10 is fixedly connected to the connecting plate 13, and the connecting plate 13 is detachably mounted on the jumper drainage rod 2 by the second bolt.

[0029] Preferably, there are four groups of first bolts 4, and the ends of the two groups of first bolts 4 on the same side (located on the side of the first nut 3) are staggered up and down, which is convenient for installation. The corresponding two groups of connecting plates 13 are fixed with the same group of second bolts, thereby simplifying the installation.

[0030] Preferably, the connecting plate 13 is L-shaped, and one side of the connecting plate 13 abuts against the end of the guide plate 1. Thus, the positioning of the connecting plate 13 can be achieved.

[0031] Preferably, the truncated platform 12 is a rubber block, and the side wall of the rubber block is provided with a slit. When pushed into the limiting sleeve 8, it can be tightly held on the screw rod 10. Since the limiting sleeve 8 limits the truncated platform 12 from moving leftward, and the truncated platform 12 is tightly held on the screw rod 10, the truncated platform 12 further limits the screw rod 10 from moving leftward. In this way, even if the bolts and the second nut 11 at the connecting plate 13 are loose, the screw rod 10 can be prevented from moving out of the sleeve 5.

[0032] During installation, the jumper wire drainage rod 2 is inserted into the drainage plate 1 until the convex corrugations 2.1 of the jumper wire drainage rod 2 and the concave corrugations 1.1 of the drainage plate 1 are embedded in place.

[0033] The first bolts 4 are inserted into the two sets of bolt holes on the same side, with the ends of the two sets of first bolts 4 facing upward and downward. Since the sleeve 5 is smaller than the diameter of the first bolt 4, the first nut 3 can be screwed in for initial tightening.

[0034] Unscrew the cap 6, press the round table 12 to the right and compress the spring 9; then extend the screw 10 horizontally from the left through hole 7 into the sleeve 5, and the screw 10 passes through the round table 12, the spring 9 and extends out of the right through hole 7 to be threadedly connected with the second nut 11. Loosen the round table 12, and under the action of the spring 9 (it is necessary to reasonably select an appropriate spring 9 so that the elastic force of the spring 9 meets this requirement), the round table 12 is pushed into the limit sleeve 8 and locked. At the same time, the round table 12 also holds the screw 10 tightly to limit the screw 10 from moving to the left.

Claims

1. A loose-proof crimping type tension clamp with a corrugated structure, characterized in that: The invention comprises a drainage plate (1), a jumper drainage rod (2), a first nut (3) and a first bolt (4); the drainage plate (1) is a concave structure and the inner wall has concave corrugations (1.1); the upper and lower surfaces of the end of the jumper drainage rod (2) are convex corrugations (2.1); after the jumper drainage rod (2) is inserted into the drainage plate (1), the concave corrugations (1.1) and the convex corrugations (2.1) are interlocked, and the jumper drainage rod (2) and the drainage plate (1) are locked by the first nut (3) and the first bolt (4).

2. The anti-loosening type crimping type tension clamp with a corrugated structure according to claim 1, characterized in that: The first nut (3) is a double nut.

3. The anti-loosening type crimping type tension clamp with a corrugated structure according to claim 2, characterized in that: The end of the jumper drainage rod (2) and the drainage plate (1) are both plate-shaped, and the concave corrugations (1.1) and the convex corrugations (2.1) are both wave-shaped.

4. The anti-loosening type crimping type tension clamp with a corrugated structure according to claim 3, characterized in that: The guide plate (1) is a double-plate structure.

5. The anti-loosening type crimping type tension clamp with a corrugated structure according to claim 4, characterized in that: A sleeve (5) is fixed to the end of the first bolt (4), and through holes (7) are formed on the inner wall of the sleeve (5) on the left and right sides. The screw rod (10) passes through the left and right through holes (7) and is threadedly connected to the second nut (11). The other end of the screw rod (10) is fixed to a connecting plate (13), and the connecting plate (13) is mounted on the jumper drainage rod (2).

6. The anti-loosening type crimping type tension clamp with a corrugated structure according to claim 5, characterized in that: The connecting plate (13) is L-shaped, and one side of the connecting plate (13) abuts against the end of the guide plate (1).

7. The anti-loosening type crimping type tension clamp with a corrugated structure according to claim 5, characterized in that: A limiting sleeve (8) is fixed at the through hole (7) on one side, and a spring (9) is fixed at the through hole (7) on the other side, and the spring (9) is connected to the round table (12); the screw rod (10) passes through the limiting sleeve (8), the round table (12), and the spring (9), and the round table (12) is pressed tightly into the limiting sleeve (8) by the spring (9) and holds the screw rod (10) tightly.

8. The anti-loosening type crimping type tension clamp with a corrugated structure according to claim 7, characterized in that: The truncated table (12) is a rubber block, and a slit is provided on the side wall of the rubber block.

9. The anti-loosening type crimping type tension clamp with a corrugated structure according to claim 7, characterized in that: The limiting sleeve (8) is provided with a plug hole with a small diameter at one end and a large diameter at the other end.

10. The method for preventing loosening of a crimped tension clamp with a corrugated structure according to claim 9, comprising the following steps: Step 1: During installation, insert the jumper wire drainage rod (2) into the drainage plate (1) until the convex corrugations (2.1) of the jumper wire drainage rod (2) and the concave corrugations (1.1) of the drainage plate (1) are embedded in each other; Step 2: insert the first bolts (4) into the two sets of bolt holes on the same side, with the ends of the two sets of first bolts (4) facing upwards and downwards respectively; since the size of the sleeve (5) is smaller than the diameter of the first bolt (4), the first nut (3) can be screwed in for initial tightening; Step 3: Unscrew the cap (6), press the round table (12) to the right and compress the spring (9); then extend the screw (10) horizontally into the sleeve (5) from the left through hole (7), and the screw (10) passes through the round table (12), the spring (9) and extends out of the right through hole (7) to be threadedly connected with the second nut (11); Step 4: Loosen the round table (12). Under the action of the spring (9), the round table (12) is pushed into the limiting sleeve (8) and locked; at the same time, the round table (12) is also tightly held on the screw rod (10) to limit the screw rod (10) from moving to the left.

Images