Adjustable anti-twist strain clamp plate

Abstract

The present application relates to the technical field of power transmission line of power system, specifically to a kind of adjustable anti-twist strain clamp plate, through the unique adjusting rod group design, the extension and retraction amount of two strain clamp heads in the right angle connecting rod right angle direction can be adjusted synchronously, so as to continuously and accurately change the relative angle between two strain clamp heads.This makes the present application can flexibly adapt to different line turning angle, elevation difference and other complex actual working conditions, greatly improves the versatility and application range of the clamp plate, by setting the constraint element such as hook spring or spring resistance rod between the strain clamp head and the triangular clamp plate, the rotation of the triangular clamp plate is elastically constrained.This design can not only allow the line to deflect slightly within a reasonable range to release stress, but also effectively inhibit excessive twisting or continuous one-sided twisting caused by wind and other reasons, fundamentally avoid the problems such as conductor torsion, uneven force on the clamp plate, and prolong the service life of the line fittings and conductors.

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 link plate. BACKGROUND

[0002] The strain link plate is a plate-shaped connecting fitting for connecting several insulator strings or assembling 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 link plate is an indispensable connecting fitting.

[0003] Chinese patent CN2020109109344 discloses a special-shaped strain link 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 link plate through a bolt. The adjusting and limiting mechanism can adjust and limit the two sides of the top angle of the triangular link plate, which is convenient for limiting and fixing triangular link plates with different top angles. The triangular link 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 link 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 link plate connected at each strain hanging point is also relatively fixed. Once the triangular link plate is installed, its relative position with the strain hanging point cannot be adjusted. In the use process, due to wind swing or shaking, the line tension may not be uniform, and even twisting may occur.

[0005] Therefore, the present application provides a strain link plate which can adjust the position of the strain hanging point within a certain range and effectively ensure that the triangular link plate 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 adjusted.

[0007] 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.

[0008] The strain hanging head is provided with a U-shaped groove, which is used for connecting a triangular connecting plate through a connecting 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.

[0009] 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.

[0010] 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.

[0011] Further, the two ends of the vice connecting rod are connected with the adjusting screw rod and the movable rod through connecting sleeves.

[0012] Further, the vice connecting rod and the right-angle connecting rod are connected 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.

[0013] 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 a connecting bolt.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. 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 different line turning angles, elevation differences and other complex actual working conditions, greatly improving the universality and application range of the connecting plate.

[0019] 2. The present application sets the connecting rod group connecting the two strain clamps and the adjusting screw rod and the movable rod, thereby ensuring that the two strain clamps always move synchronously and reversely during the adjustment. This linkage mechanism effectively prevents problems such as jamming, asynchronization or stress concentration in the connecting plate caused by unilateral adjustment, thereby ensuring the smoothness of the adjustment process and the stability of the structure.

[0020] 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 rotating the locking nut. This locking structure can effectively prevent loosening or displacement under long-term vibration load such as wind vibration and conductor dancing, thereby ensuring the long-term stability of the form and stress state of the connecting plate after the line is erected, and improving the operation safety.

[0021] 4. The present application sets a constraint such as a hook spring or a spring abutment rod between the strain clamp and the triangular connecting plate, which elastically restricts the rotation of the triangular connecting plate. This design can not only allow the line to deflect slightly within a reasonable range to release stress, but also effectively inhibit excessive twisting or continuous unilateral twisting caused by wind force and other reasons, thereby fundamentally avoiding problems such as conductor whipping, uneven stress on the connecting plate and the like, and prolonging the service life of the line fittings and conductors.

[0022] 5. The present application sets the connecting seat with detachable connection to the transverse hanging plate at both ends of the straight angle connecting rod. When it is necessary to replace the insulator string suspended below, the entire connecting plate does not need to be disassembled or the line does not need to be interrupted, but only the transverse hanging plate needs to be removed, which greatly simplifies the maintenance process, improves the work efficiency, and reduces the operation and maintenance cost and risk.

[0023] 6. The present application designs the end of the adjusting screw rod and the movable rod 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 movement is converted into linear movement through structures such as the connecting ring and the connecting sleeve, and it is ensured that the strain clamp itself does not rotate during adjustment, so that the entire adjustment process is labor-saving, controllable and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0026] Figure 3 Decomposition of the present invention Figure 1 ;

[0027] Figure 4 Decomposition of the present invention Figure 2 ;

[0028] Figure 5 This is a cross-sectional view of the present invention.

[0029] The diagram is labeled as follows: 1-Right-angle connecting rod; 11-Adjusting screw hole; 12-Modible hole; 13-Connecting seat; 14-Locking head; 15-Locking nut; 16-Angle seat; 2-Tension hanging head; 21-U-groove; 22-Connecting plate pin; 23-Matching hole; 24-Constraint ear; 25-Hinge seat; 3-Connecting rod assembly; 31-Main connecting rod; 32-Secondary connecting rod; 33-Diagonal connecting rod; 34-Sliding rod head; 4-Adjusting rod assembly; 41-Adjusting screw; 42-Modible rod; 43-Connecting bolt; 44-Rotating part; 45-Connecting rotating sleeve; 46-Connecting ring; 47-Adjusting part; 5-Constraint part; 51-Hook spring; 52-Spring abutment; 6-Transverse hanging plate; 7-Triangular connecting plate. Detailed Implementation

[0030] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0031] like Figure 1 As shown, an adjustable anti-torsion tension connecting plate includes: a right-angle connecting rod 1 and two tension hanging heads 2. Both tension hanging heads 2 are connected to the right-angle connecting rod 1 via an adjusting rod assembly 4. The lengths of the two tension hanging heads 2 in the right-angle direction of the right-angle connecting rod 1 are adjusted by the adjusting rod assembly 4, so that when one tension hanging head 2 extends, the other tension hanging head 2 retracts, thereby realizing the change and adjustment of the angle between the two tension hanging heads 2 to meet the actual usage requirements of different hanging states and the entire connecting plate. The tension hanging heads 2 are used to connect to a triangular connecting plate 7. The rotation constraint of the triangular connecting plate 7 is achieved by a constraint member 5, which is installed on the corresponding tension hanging head 2. The two ends of the constraint member 5 are respectively connected to the tension hanging head 2 and the triangular connecting plate 7. The two tension hanging heads 2 and the adjusting rod assembly 4 are correspondingly connected by a connecting rod assembly 3, which facilitates the synchronization of the adjustment process of the two tension hanging heads 2 and ensures the stability of the two tension hanging heads 2.

[0032] As shown in Figures 2-5 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 connected 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 the two strain clamp heads 2 and the 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 the two strain clamp heads 2 and the connection between adjusting screw rod 41 and movable rod 42.

[0033] Connecting rod group 3 includes main connecting rod 31 and auxiliary connecting rod 32, both ends of main connecting rod 31 are hingedly connected with corresponding strain clamp head 2 through hinged seat 25, hinged 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 hingedly connected 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 hingedly connected with one end of auxiliary connecting rod 32, connecting ring 46 is fixedly arranged between adjusting portion 47 and rotating portion 44 of adjusting screw rod 41 and movable rod 42, adjusting screw rod 41 and movable rod 42 are both divided into adjusting portion 47 and rotating portion 44, adjusting portion 47 is screwed with corresponding adjusting screw hole 11 or is inserted with movable hole 12, and rotating portion 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 portion 47 and rotating portion 44, the other end of rotating portion 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 rotates as a whole.

[0034] As shown in Figure 3 and4 As 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 a 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 to cause 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 stop rod. 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 stop rod 52 is used in cooperation with the restraint ears 24 on the strain clamp 2 to realize the abutment between the spring stop rod 52 and the triangular link plate 7, so that the two sides of the triangular link plate 7 are always elastically abutted by the spring stop rod 52.

[0035] 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.

[0036] During the entire adjustment process of the link plate, when the adjusting screw 41 is horizontally rotated and moves the corresponding strain clamp 2 and triangular link plate 7 horizontally 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.

[0037] 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 embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Various changes and improvements can be made without departing from the spirit and scope of 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 twist-proof strain clamp plate, characterized in that, The utility model relates to a kind of angle-adjustable insulator string suspension device, including: Right angle connecting rod (1) and two strain head (2), two described strain head (2) are connected with the right angle connecting rod (1) by adjusting rod group (4), the length of two strain head (2) in right angle connecting rod (1) right angle direction is adjusted by the adjusting rod group (4), strain head (2) and adjusting rod group (4) are connected by connecting rod group (3), so that one of two strain head (2) is stretched out while the other is retracted, to realize the angle adjustment between two strain head (2); The connecting rod group (3) includes a main connecting rod (31) and a secondary connecting rod (32), both ends of the main connecting rod (31) are hinged to the corresponding strain head (2) through a hinge seat (25), and both ends of the secondary connecting rod (32) are connected to the adjusting rod group (4). The strain head (2) is provided with a U-shaped groove (21) for connecting a triangular connecting plate (7) through a connecting plate pin (22), both sides of the strain head (2) and the triangular connecting plate (7) are provided with a restraint ear (24), and elastic restraint is realized through a restraint member (5). The adjusting rod group (4) includes an adjusting screw rod (41) and a movable rod (42), the adjusting screw rod (41) and the movable rod (42) are connected to the corresponding strain head (2) through a connecting bolt (43), one end of the adjusting screw rod (41) is screwed to the right angle connecting rod (1) through an adjusting screw hole (11), and the other end of the movable rod (42) is movably inserted into the right angle connecting rod (1) through a movable hole (12). Both ends of the right angle connecting rod (1) are provided with locking heads (14), and the locking heads (14) are locked with the adjusting screw rod (41) or the movable rod (42) by tightening a locking nut (15).

2. The adjustable twist-proof dead end anchor plate of claim 1, wherein, Both ends of the secondary connecting rod (32) are connected to the adjusting screw rod (41) and the movable rod (42) through a connecting sleeve (45).

3. An adjustable torsion-proof dead-end anchor plate according to claim 2, characterized in that The secondary connecting rod (32) and the right angle connecting rod (1) are connected through an inclined connecting rod (33), one end of the inclined 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 an angle seat (16).

4. The adjustable twist-proof strain clamp plate of claim 1, wherein, The adjusting screw rod (41) and the movable rod (42) each 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), and the rotating part (44) is connected to the strain head (2) through the connecting bolt (43).

5. An adjustable torsion-proof dead-end anchor plate according to claim 4, characterized in that The restraint member (5) is a hook spring (51) or a spring stop rod (52), and is connected between the strain head (2) and the triangular connecting plate (7) to elastically limit the triangular connecting plate (7).

6. An adjustable torsion-proof dead-end anchor plate according to claim 1, characterized in that Both ends of the right angle connecting rod (1) are also provided with a connecting seat (13) for detachably connecting a transverse hanging plate (6), and the transverse hanging plate (6) is used for suspending an insulator string.

7. An adjustable torsion-proof dead-end anchor plate according to claim 2, wherein The connecting sleeve (45) is connected to the adjusting screw rod (41) or the movable rod (42) through a connecting ring (46), and the connecting ring (46) is fixedly arranged between the adjusting part (47) and the rotating part (44).

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