Adjustable anti-twist tension yoke plate

Abstract

The invention relates to the technical field of power transmission lines of power systems, in particular to an adjustable anti-twist tension yoke plate. Through the unique design of the adjusting rod group, the extension and retraction amounts of the two tension-resistant hanging heads in the right-angle direction of the right-angle connecting rod can be synchronously adjusted, so that the relative angle between the two tension-resistant hanging heads can be continuously and accurately changed. Therefore, the yoke plate can flexibly adapt to complex actual working conditions such as different line steering angles and elevation differences, the universality of the yoke plate is greatly improved, and the application range of the yoke plate is greatly widened. Elastic constraint is applied to rotation of the triangular yoke plate through a constraint piece such as a hook spring or a spring abutting rod which is arranged between the tension-resistant hanging head and the triangular yoke plate. According to the design, the line can be allowed to slightly deflect in a reasonable range to release stress, excessive torsion or continuous single-side torsion caused by wind power and the like can be effectively inhibited, the problems such as wire torsional pendulum and uneven yoke plate stress caused by excessive torsion or continuous single-side torsion are fundamentally avoided, and the service life of the line hardware fitting and the wire is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power system transmission line, in particular to an adjustable anti-twist strain joint plate. BACKGROUND

[0002] The strain joint plate is a plate-shaped connecting fitting that connects several insulator strings or assembles multiple stress branches into a whole. With the continuous development of technology, long-distance power transmission is carried out by large power towers, and short-distance transmission is supported by towers, among which the strain joint plate is an indispensable connecting fitting.

[0003] Chinese patent CN2020109109344 discloses a special-shaped strain joint plate for transmission line, which comprises a special-shaped main plate. A slot is formed in the middle of the end face of one end of the special-shaped main plate. A horizontal insertion square plate is inserted into the slot and welded and fixed. An upper strain hanging point and a lower strain hanging point are arranged near the top and the other end face of the special-shaped main plate, respectively. An adjusting and limiting mechanism is installed on each strain hanging point. The horizontal insertion square plate has two ends for hanging insulator strings. Each strain hanging point is connected with a triangular joint plate through a bolt. The adjusting and limiting mechanism can adjust and limit the two sides of the top angle of the triangular joint plate, which is convenient for limiting and fixing triangular joint plates with different top angles. The triangular joint plate has two wire hanging points, which form two lower front horizontal hanging points and two upper rear horizontal hanging points in space, forming a simple strain pulling line structure, shortening the fitting string length, avoiding the complicated structure of the ordinary jumper structure with a 30-degree angle lead line and additional jumper interval rod, and enhancing the safety and reliability of the transmission line operation.

[0004] Since the main plate structure of the special-shaped strain joint plate is fixed in a certain shape, the angle between the strain hanging points connected at both ends of the main plate and the horizontal line cannot be adjusted, and the position between the two strain hanging points cannot be adaptively adjusted according to actual installation needs. In addition, the constraint of the triangular joint plate 7 connected at each strain hanging point is also relatively fixed. Once the triangular joint plate 7 is installed, its relative position at the strain hanging point cannot be adjusted. In the use process, the line tension is not uniform due to wind swing or shaking, and even twisting may occur.

[0005] Therefore, the present application provides a strain joint plate that can adjust the position of the strain hanging point within a certain range and effectively ensure that the triangular joint plate 7 has a certain activity constraint. SUMMARY

[0006] To solve the above technical problems, the application provides an adjustable anti-twist strain clamp plate, which comprises a right-angle connecting rod and two strain hanging heads, the two strain hanging heads are connected with the right-angle connecting rod through an adjusting rod set, the length of the two strain hanging heads in the direction of the right-angle of the right-angle connecting rod is adjusted through the adjusting rod set, the strain hanging head and the adjusting rod set are connected through a connecting rod set, one of the two strain hanging heads is stretched out while the other is retracted, so that the angle between the two strain hanging heads is changed and adjusted. The connecting rod set comprises a main connecting rod and a vice connecting rod, the two ends of the main connecting rod are hinged with corresponding strain hanging heads through a hinge seat, and the two ends of the vice connecting rod are connected with the adjusting rod set. The strain hanging head is provided with a U-shaped groove, which is used for connecting a triangular connecting plate through a connecting plate pin, the two sides of the strain hanging head and the triangular connecting plate are provided with constraint ears, and elastic constraint is realized through a constraint part.

[0007] Further, in order to facilitate the adjustment of the positions of the two strain hanging heads, the adjusting rod set comprises an adjusting screw rod and a movable rod, the adjusting screw rod and the movable rod are connected with corresponding strain hanging heads through connecting bolts, one end of the adjusting screw rod is screwed with the right-angle connecting rod through an adjusting screw hole, and the other end of the movable rod is movably inserted into the right-angle connecting rod through a movable hole.

[0008] Further, in order to ensure the stability of the strain hanging head and the adjusting screw rod and the movable rod after adjustment, the two ends of the right-angle connecting rod are provided with locking heads at the top, and the locking heads are locked with the adjusting screw rod or the movable rod by screwing locking nuts.

[0009] Further, the two ends of the vice connecting rod are connected with the adjusting screw rod and the movable rod through connecting rotating sleeves.

[0010] Further, the vice connecting rod is connected with the right-angle connecting rod through an inclined connecting rod, one end of the inclined connecting rod is slidably connected with the vice connecting rod through a sliding rod head, and the other end is hinged with the right-angle connecting rod through an angle seat.

[0011] Further, the adjusting screw rod and the movable rod each comprise an adjusting part and a rotating part, the rotating part is a hexagonal stud structure, the adjusting part is matched with the adjusting screw hole or the movable hole, and the rotating part is connected with the strain hanging head through the connecting bolt.

[0012] Further, the constraint part is a hook spring or a spring resistance rod, which is connected between the constraint ears of the strain hanging head and the triangular connecting plate, so as to realize the elastic limiting of the triangular connecting plate.

[0013] Further, the two ends of the right-angle connecting rod are also provided with connecting seats, which are used for detachably connecting transverse hanging plates, and the transverse hanging plates are used for hanging insulator strings.

[0014] Further, in order to ensure the connection and synchronous movement between the sub-connecting rod and the adjusting screw rod or the movable rod, the connecting sleeve is connected with the adjusting screw rod or the movable rod through a connecting ring, which is fixedly arranged between the adjusting part and the rotating part.

[0015] Compared with the prior art, the present application has the following beneficial effects: 1. The unique adjusting rod set design of the present application can synchronously adjust the extension and retraction of the two strain clamps in the straight angle direction of the straight angle connecting rod, thereby continuously and accurately changing the relative angle between the two strain clamps. This makes the present application flexible to adapt to complex actual working conditions such as different line turning angles and elevation differences, greatly improving the universality and application range of the connecting plate.

[0016] 2. The connecting rod set arranged between the two strain clamps and the adjusting screw rod and the movable rod ensures that the two strain clamps always move synchronously and reversely during adjustment. This linkage mechanism effectively prevents problems such as jamming, asynchrony or stress concentration in the connecting plate caused by unilateral adjustment, ensuring smooth adjustment and structural stability.

[0017] 3. The present application can firmly lock the adjusting screw rod and the movable rod at the locking head of the straight angle connecting rod by tightening the locking nut. This locking structure can effectively prevent loosening or displacement under long-term vibration loads such as wind vibration and conductor dancing, ensuring the long-term stability of the connecting plate form and stress state after the line is erected, and improving the operation safety.

[0018] 4. The restraining member such as a hook spring or spring stopper arranged between the strain clamp and the triangular connecting plate exerts elastic restraint on the rotation of the triangular connecting plate. This design allows the line to deflect slightly within a reasonable range to release stress, effectively suppresses excessive twisting or continuous unilateral twisting caused by wind and other reasons, fundamentally avoids problems such as conductor whipping and uneven stress on the connecting plate, and prolongs the service life of the line fittings and conductors.

[0019] 5. The present application is provided with a connecting seat at both ends of the straight angle connecting rod, which is detachably connected with the transverse hanging plate. When it is necessary to replace the insulator string suspended below, it is not necessary to disassemble the entire connecting plate or interrupt the line, but only to disassemble the transverse hanging plate, greatly simplifying the maintenance process, improving the work efficiency, and reducing the operation and maintenance cost and risk.

[0020] 6. The end of the adjusting screw rod and the movable rod is designed as a rotating part in the form of a hexagonal stud, which is convenient for rotating operation using standard tools such as a wrench. At the same time, the rotating motion is converted into linear motion through structures such as the connecting ring and the connecting sleeve, and it is ensured that the strain clamp itself will not rotate during adjustment, so that the entire adjustment process is labor-saving, controllable and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 schematic view of the three-dimensional structure of the present application Figure 1 ; Figure 2 schematic view of the three-dimensional structure of the present application Figure 2 ; Figure 3 exploded view of the present application Figure 1 ; Figure 4 exploded view of the present application Figure 2 ; Figure 5 sectional view of the present application.

[0022] In the figure, the reference numbers are: 1 - right-angle connecting rod; 11 - adjusting screw hole; 12 - movable hole; 13 - connecting seat; 14 - locking head; 15 - locking nut; 16 - angle seat; 2 - strain hanging head; 21 - groove; 22 - connecting plate pin; 23 - butt joint hole; 24 - constraint ear; 25 - hinged seat; 3 - connecting rod set; 31 - main connecting rod; 32 - auxiliary connecting rod; 33 - inclined connecting rod; 34 - sliding rod head; 4 - adjusting rod set; 41 - adjusting screw rod; 42 - movable rod; 43 - connecting bolt; 44 - rotating part; 45 - connecting rotating sleeve; 46 - connecting ring; 47 - adjusting part; 5 - constraint member; 51 - hook spring; 52 - spring abutting rod; 6 - transverse hanging plate; 7 - triangular connecting plate. DETAILED DESCRIPTION

[0023] The following description is provided to enable any person skilled in the art to practice the present application. The preferred embodiments described below are only examples of the present application and other obvious variants can be conceived by those skilled in the art.

[0024] As shown in Figure 1 , an adjustable anti-twist strain connecting plate comprises a right-angle connecting rod 1 and two strain hanging heads 2, both of which are connected to the right-angle connecting rod 1 through an adjusting rod set 4, and the length of the two strain hanging heads 2 in the direction of the right angle of the right-angle connecting rod 1 is adjusted through the adjusting rod set 4, so that one of the two strain hanging heads 2 is extended while the other strain hanging head 2 is retracted, thereby realizing the change and adjustment of the angle between the two strain hanging heads 2 to meet the actual use requirements of the hanging lines in different states and the entire connecting plate. The strain hanging head 2 is used to connect the triangular connecting plate 7, and the rotation constraint of the triangular connecting plate 7 is completed through a constraint member 5, which is installed on the corresponding strain hanging head 2, with both ends of the constraint member 5 connected to the strain hanging head 2 and the triangular connecting plate 7, respectively. The two strain hanging heads 2 and the adjusting rod set 4 are correspondingly connected through a connecting rod set 3, which facilitates the synchronization of the adjustment process of the two strain hanging heads 2 and ensures the stability of the two strain hanging heads 2.

[0025] As shown in Figures 2-5As shown, the adjusting rod group 4 includes: adjusting screw rod 41 and movable rod 42, adjusting screw rod 41 and movable rod 42 are connected with corresponding strain clamp head 2 through connecting bolt 43, adjusting screw rod 41 is screwed with one end of right angle connecting rod 1 through adjusting screw hole 11, movable rod 42 is movably inserted with the other end of right angle connecting rod 1 through movable hole 12, and the top of both ends of right angle connecting rod 1 is provided with locking head 14, when adjusting screw rod 41 or movable rod 42 is adjusted and moved to the corresponding position, locking head 14 is locked with adjusting screw rod 41 or movable rod 42 by tightening locking nut 15. In this way, the stability of the positions of two strain clamp heads 2 and triangular connecting plate 7 after position adjustment is further ensured, and displacement due to loosening is prevented. In the actual connection mode of right angle connecting rod 1 and adjusting rod group 4, adjusting screw hole 11 and movable hole 12 are correspondingly provided on right angle connecting rod 1, the positions of strain clamp head 2 and triangular connecting plate 7 connected with adjusting screw rod 41 are completed by the cooperation of adjusting screw rod 41 and adjusting screw hole 11, and in order to synchronously complete the position adjustment of strain clamp head 2 on movable rod 42, connecting rod group 3 is used to complete the connection of two strain clamp heads 2 and the connection between adjusting screw rod 41 and movable rod 42.

[0026] Connecting rod group 3 includes main connecting rod 31 and auxiliary connecting rod 32, both ends of main connecting rod 31 are hinged with corresponding strain clamp head 2 through hinge seat 25, hinge seat 25 is arranged on strain clamp head 2, both ends of auxiliary connecting rod 32 are connected with adjusting screw rod 41 and movable rod 42 through connecting rotating sleeve 45, auxiliary connecting rod 32 is connected with right angle connecting rod 1 through inclined connecting rod 33, one end of inclined connecting rod 33 is slidingly connected with the rod body of auxiliary connecting rod 32 through sliding rod head 34, the other end is hinged with right angle connecting rod 1 through angle seat 16, angle seat 16 is fixedly arranged on the right angle end of right angle connecting rod 1, connecting rotating sleeve 45 is connected with corresponding adjusting screw rod 41 or movable rod 42 through connecting ring 46, connecting rotating sleeve 45 is sleeved on connecting ring 46, two connecting rotating sleeves 45 are spliced to form a ring sleeve and are hinged with one end of auxiliary connecting rod 32, connecting ring 46 is fixedly arranged in the middle part of corresponding adjusting screw rod 41 and movable rod 42, adjusting screw rod 41 and movable rod 42 are both divided into adjusting part 47 and rotating part 44, adjusting part 47 is screwed with corresponding adjusting screw hole 11 or is inserted with movable hole 12, rotating part 44 is hexagonal stud structure to rotate the whole adjusting screw rod 41 or movable rod 42, and connecting ring 46 is fixedly arranged between adjusting part 47 and rotating part 44, the other end of rotating part 44 is connected with corresponding strain clamp head 2 through butt joint hole 23 and connecting bolt 43, butt joint hole 23 is arranged on the side and bottom of strain clamp head 2, and the arrangement of butt joint hole 23 and connecting bolt 43 can ensure that corresponding strain clamp head 2 will not rotate when adjusting screw rod 41 or movable rod 42 is rotated as a whole.

[0027] As Figure 3 and 4As shown, the connection between the strain clamp 2 and the triangular link plate 7 is achieved by opening a U-shaped groove 21 on the strain clamp 2, inserting the connecting end of the triangular link plate 7 into the groove and connecting through the link pin 22, so that the triangular link plate 7 can rotate within a certain range. In order to prevent the triangular link plate 7 from rotating excessively and causing the connection line to sway, and in order to avoid the triangular link plate 7 being twisted to one side and being difficult to reset after the line is erected due to wind sway, causing uneven stress on the link plate, the present application uses a restraint 5 to elastically constrain the triangular link plate 7. The restraint 5 can be a hook spring 51 or a spring stopper. Restraint ears 24 are installed on both sides of the strain clamp 2 and the triangular link plate 7. The hook spring 51 connects the restraint ears 24 of the strain clamp 2 and the triangular link plate 7 to complete the elastic constraint of the triangular link plate 7, or a spring stopper 52 is used in cooperation with the restraint ears 24 on the strain clamp 2 to realize the abutment between the spring stopper 52 and the triangular link plate 7, so that the two sides of the triangular link plate 7 are always in elastic abutment with the spring stopper 52.

[0028] The two ends of the right-angle link rod 1 are also provided with a connecting seat 13 capable of connecting and installing a transverse hanging plate 6. The transverse hanging plate 6 is detachably connected with the corresponding connecting seat 13. Since the transverse hanging plate 6 often suspends an insulator string, when it is necessary to replace the insulator string, the transverse hanging plate 6 can be quickly detached for replacement of the insulator string.

[0029] During the entire adjustment process of the link plate, when the adjusting screw 41 is horizontally rotated, the corresponding strain clamp 2 and triangular link plate 7 are horizontally moved to the right. Under the driving of the main link rod 31 and the auxiliary link rod 32, the movable rod 42 moves downward, so that the strain clamp 2 and the triangular link plate 7 connected thereto move downward synchronously. At this time, the positions of the two triangular link plates 7 and the included angle with the right-angle link rod 1 change, and vice versa, so as to complete the position and angle adjustment of the link plate. It can be confirmed that this adjustment can at least complete the angle adjustment between 30°-60°. It is more suitable for actual installation and line erection requirements.

[0030] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. An adjustable anti-torsion tension connecting plate, characterized in that, include: A right-angle connecting rod (1) and two tension hangers (2) are provided. Both tension hangers (2) are connected to the right-angle connecting rod (1) through an adjusting rod group (4). The length of the two tension hangers (2) in the right-angle direction of the right-angle connecting rod (1) is adjusted by the adjusting rod group (4). The tension hangers (2) and the adjusting rod group (4) are connected by a connecting rod group (3), so that one of the two tension hangers (2) is extended while the other is retracted, so as to realize the change and adjustment of the angle between the two tension hangers (2). The linkage group (3) includes a main linkage (31) and a secondary linkage (32). The two ends of the main linkage (31) are hinged to the corresponding tension hanger (2) through the hinge seat (25). The two ends of the secondary linkage (32) are connected to the adjusting rod group (4). The tension hanging head (2) is provided with a U-shaped groove (21) for connecting the triangular connecting plate (7) through the connecting plate pin (22). The tension hanging head (2) and the triangular connecting plate (7) are provided with constraint ears (24) on both sides, and elastic constraint is achieved through the constraint member (5).

2. The adjustable anti-torsion tension connecting plate according to claim 1, characterized in that, The adjusting rod assembly (4) includes an adjusting screw (41) and a movable rod (42). The adjusting screw (41) and the movable rod (42) are both connected to the corresponding tension hanger (2) by connecting bolts (43). One end of the adjusting screw (41) is screwed to the right-angle connecting rod (1) through the adjusting screw hole (11), and the other end of the movable rod (42) is movably inserted into the right-angle connecting rod (1) through the movable hole (12).

3. The adjustable anti-torsion tension connecting plate according to claim 2, characterized in that, The right-angle connecting rod (1) has locking heads (14) at both ends. The locking heads (14) are locked to the adjusting screw (41) or the movable rod (42) by tightening the locking nut (15).

4. The adjustable anti-torsion tension connecting plate according to claim 2 or 3, characterized in that, The two ends of the secondary connecting rod (32) are connected to the adjusting screw (41) and the movable rod (42) through the connecting sleeve (45).

5. An adjustable anti-torsion tension connecting plate according to claim 4, characterized in that, The secondary connecting rod (32) is connected to the right-angle connecting rod (1) by a diagonal connecting rod (33). One end of the diagonal connecting rod (33) is slidably connected to the secondary connecting rod (32) through a sliding rod head (34), and the other end is hinged to the right-angle connecting rod (1) through a corner seat (16).

6. An adjustable anti-torsion tension connecting plate according to claim 2, characterized in that, The adjusting screw (41) and the movable rod (42) both include an adjusting part (47) and a rotating part (44). The rotating part (44) is a hexagonal stud structure. The adjusting part (47) cooperates with the adjusting screw hole (11) or the movable hole (12). The rotating part (44) is connected to the tension hanging head (2) by a connecting bolt (43).

7. An adjustable anti-torsion tension connecting plate according to claim 5, characterized in that, The constraint member (5) is a hook spring (51) or a spring abutment (52), which is connected between the tension hanging head (2) and the constraint ear (24) of the triangular connecting plate (7) to achieve elastic limiting of the triangular connecting plate (7).

8. An adjustable anti-torsion tension connecting plate according to claim 1, characterized in that, The right-angle connecting rod (1) is also provided with connecting seats (13) at both ends for detachably connecting the horizontal hanging plate (6), which is used to suspend the insulator string.

9. An adjustable anti-torsion tension connecting plate according to claim 4, characterized in that, The connecting sleeve (45) is connected to the adjusting screw (41) or the movable rod (42) via the connecting ring (46), and the connecting ring (46) is fixedly disposed between the adjusting part (47) and the rotating part (44).

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