Wire clamping linkage device applied to overhead line equipment

Abstract

The utility model relates to the technical field of overhead line equipment, in particular to a wire clamping linkage device applied to overhead line equipment. The wire clamping structure provided by the utility model comprises a vertically arranged screw rod, the upper part of the screw rod is fixedly provided with a nut, the lower part of the screw rod is movably provided with a fixed base, and the fixed base is fixed in a lower shell; the screw drives the nut to lift relative to the fixed base under the action of external force; a sliding groove piece is movably arranged on the side portion of the nut, the top of the sliding groove piece is fixedly connected with the upper shell through a linkage piece, the bottom of the sliding groove piece is in contact with a cable through a cable pressing block, the cable pressing block is matched with the fixed base to press the cable, and meanwhile the linkage piece drives the upper shell to be opened and closed. Linkage of the clamping wire and the upper and lower shells is completed through a single-section screw rod, installation and disassembly are convenient, and live-line work can be achieved. The device is linked with the upper shell through the spring, the upper shell and the lower shell are closed tightly, and sealing performance is good; the wire clamping structure compresses the cable through the fixed base, so that the lower shell can be prevented from being deformed due to stress, and the internal stress of the shell is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of overhead line equipment, in particular to a line clamping linkage device applied to overhead line equipment. Background Art

[0002] The distribution lines have a poor operating environment and a high failure rate. They are often affected by uncontrollable factors such as lightning strikes, tree damage, insulation damage, etc., which can cause power outages. The clamping mechanism and the opening and closing mechanism of the traditional fault indicator are two independent action actuators. The clamping and closing of the device require two installations, which is inconvenient and labor-intensive. Therefore, there is an urgent need for a simple clamping structure to simplify the installation process and work intensity. In order to solve the above problems, technicians in this field have proposed some solutions.

[0003] For example, a fault indicator wire clamping opening and closing linkage device (CN212845465U) involves a linkage structure that realizes the wire clamping mechanism and the upper and lower shell opening and closing mechanism through two screws with different pitches, so that a single action input can be used to execute the wire clamping / loosening and the upper and lower shell opening and closing linkage. At this time, the large pitch screw idly rotates through the idle groove while the wire clamping screw continues to drive the wire clamping block to move. The closing effect of the upper and lower shells is affected by the accuracy of the idle groove, and there is a risk of loose closure. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and to provide a line clamping linkage device applied to overhead line equipment, which can realize the live installation of overhead line equipment.

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

[0006] A wire-holding linkage device applied to overhead line equipment comprises a wire-holding structure installed in the overhead line equipment, the overhead line equipment comprises an upper shell and a lower shell, the wire-holding structure comprises a vertically arranged screw rod, a nut is fixedly installed on the upper part of the screw rod, a fixed base is movably arranged on the lower part of the screw rod, and the fixed base is fixed in the lower shell; the screw rod drives the nut to move up and down relative to the fixed base under the action of an external force; a slide member is movably arranged on the side of the nut, the top of the slide member is fixedly connected to the upper shell through a linkage member, the bottom of the slide member contacts the cable through a wire pressing block, the wire pressing block cooperates with the fixed base to press the cable, and at the same time the linkage member drives the upper shell to open and close.

[0007] In this technical solution, the slide member installed on the upper shell and the fixed base installed on the lower shell are hinged, and the screw rod passes through the slide member and the fixed base respectively and drives the two to achieve relative movement, thereby realizing the relative opening and closing action of the upper shell and the lower shell. In this way, the lower shell and the upper shell cooperate with each other to compress the cable. The fixed base is embedded in the lower shell and always keeps its position unchanged. The screw rod drives the nut on its upper part to move. The nut is limited in the long groove of the slide member by plugging the screw, so as to rotate and drive the slide member to move; the slide member is a mechanical transmission structure for realizing the opening and closing action of the upper shell; the top of the slide member is connected to the buffer spring in the upper shell. When the screw rod rises or falls to a certain extent, after overcoming the preload of the buffer spring, the upper shell is slowly lowered to avoid violent squeezing and damage of the cable by the wire pressing block, thereby realizing slow rise and fall. Among them, the fixed base provides stable support for the screw rod to ensure that the cable will not be displaced when subjected to external force. Linkage: The linkage connects the slide and the upper shell. When the slide rotates, the linkage drives the upper shell to open and close accordingly. The wire pressing block moves synchronously with the linkage. When the upper shell closes, the wire pressing block cooperates with the fixed base to press the cable tightly, achieving flexible contact with the cable, avoiding deformation of the lower shell under stress and reducing stress inside the shell.

[0008] In some of the embodiments, the fixed base is provided with an L-shaped connecting seat matched with the lower shell body, and the top of the L-shaped connecting seat is provided with a hinge shaft hinged to the end of the slide groove member.

[0009] In this technical solution, the L-shaped connecting seat adopts a special shape, so that the fixed base can be stably and reliably matched with the lower shell, which can ensure that the device will not be loose or shifted during use. The sliding groove part and the hinge axis of the fixed base can limit the rotational movement of the sliding groove part, ensuring that the groove part always rotates with the hinge axis as the center of the circle.

[0010] In some of the embodiments, a long groove is provided in the middle of the slide member, a driving screw is slidably provided in the long groove, and the driving screw is fixedly installed on the side of the nut; the slide member rotates with the hinge axis as the center and the driving screw limited in the long groove as the guide, thereby driving the upper shell on the linkage member to move synchronously.

[0011] In this technical solution, the fixing and release of the cable, as well as the opening and closing of the upper shell and the lower shell are achieved through the linkage setting of the slide member, the plug screw and the linkage member. The long groove allows the plug screw to slide in it, and the plug screw is fixedly installed on the side of the nut, so when the nut moves up and down with the screw rod, the plug screw will slide along the long groove. The slide member rotates with the hinge axis as the center of the circle, so that the slide member remains stable during the rotation process and drives the upper shell on the linkage member to move synchronously.

[0012] In some embodiments, the wire pressing block is arranged in an arc shape, and the curvature of the arc matches the diameter of the cable.

[0013] In the present technical solution, the wire pressing block adopts an arc-shaped curved structure, which can increase the contact area with the cable, improve the compression effect with the cable, and can adapt to cables of different diameters.

[0014] In some of the embodiments, the bottom of the wire pressing block is connected to a buffer device in the lower shell, and the buffer device cooperates with the wire pressing block to press the wires, and is suitable for cables with different wire diameters through spring deformation.

[0015] In the present technical solution, the cable compression action requires a certain buffer, otherwise it is easy to cause damage to the cable. Through the buffer device, the wire pressing block cooperates with the wire pressing, and the spring deformation is used to adapt to cables of different wire diameters. The deformation of the lower shell due to force can be avoided, the stress in the shell is reduced, and the protection of the cable by the device is reflected.

[0016] In some embodiments, the linkage member is in the shape of a plate and is provided with a mounting hole that matches with the buffer spring of the upper shell.

[0017] In this technical solution, the linkage part cooperates with the buffer spring to achieve buffering of the opening and closing action of the upper shell. Only when the lifting force of the screw reaches a certain level can the linkage part drive the upper shell to move, avoiding random shaking of the upper shell caused by malfunction of the screw.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The wire clamping structure uses a single-stage screw to complete the linkage between the wire clamping and the upper and lower shells, which is easy to install and disassemble and can be operated under power; the device is linked to the upper shell through a spring, and the upper and lower shells are tightly closed with good sealing; the wire clamping structure presses the cable through the fixed base, which can avoid the deformation of the lower shell due to force and reduce the stress inside the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is one of the use state diagrams of the utility model.

[0023] Figure 3This is the second usage state diagram of the utility model.

[0024] In the figure: 1. Screw; 2. Driving screw; 3. Fixed base; 4. Nut; 5. Wire pressing block; 6. Linkage part; 7. Slide part. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] Example 1

[0027] like Figure 1 As shown, the present embodiment provides a wire-holding linkage device applied to overhead line equipment, including a wire-holding structure installed in the overhead line equipment, the overhead line equipment including an upper shell and a lower shell, the wire-holding structure including a vertically arranged screw rod 1, a nut 4 is fixedly installed on the upper part of the screw rod 1, a fixed base 3 is movably arranged on the lower part of the screw rod 1, and the fixed base 3 is fixed in the lower shell; the screw rod 1 drives the nut 4 to move up and down relative to the fixed base 3 under the action of external force; a slide member 7 is movably arranged on the side of the nut 4, the top of the slide member 7 is fixedly connected to the upper shell through a linkage member 6, the bottom of the slide member 7 contacts with the cable through a wire pressing block 5, the wire pressing block 5 cooperates with the fixed base 3 to press the cable, and at the same time the linkage member 6 drives the upper shell to open and close.

[0028] like Figure 2 and Figure 3As shown, the slide member 7 installed on the upper shell and the fixed base 3 installed on the lower shell are hinged, and the screw 1 passes through the slide member 7 and the fixed base 3 respectively and drives the two to achieve relative movement, thereby realizing the relative opening and closing action of the upper shell and the lower shell. In this way, the lower shell and the upper shell cooperate with each other to compress the cable. The fixed base 3 is embedded in the lower shell and always keeps its position unchanged. The screw 1 drives the nut 4 on its upper part to move. The nut 4 is limited in the long groove of the slide member 7 by the plug screw 2, so that the rotation drives the slide member 7 to move; the slide member 7 is a mechanical transmission structure for realizing the opening and closing action of the upper shell; the top of the slide member 7 is connected to the buffer spring in the upper shell. When the screw 1 rises or falls to a certain extent, after overcoming the preload of the buffer spring, the upper shell is slowly lowered to avoid the violent squeezing and damage of the cable by the wire pressing block 5, thereby realizing slow rise and fall. Among them, the fixed base 3 provides stable support for the screw 1 to ensure that the cable will not be displaced when subjected to external force. Linkage 6: Linkage 6 connects the slide 7 and the upper shell. When the slide 7 rotates, the linkage 6 drives the upper shell to open and close accordingly. The wire pressing block 5 moves synchronously with the linkage 6. When the upper shell closes, the wire pressing block 5 cooperates with the fixed base 3 to press the cable tightly, achieving flexible contact with the cable, avoiding deformation of the lower shell under stress, and reducing stress inside the shell.

[0029] In some of the embodiments, the fixed base 3 is provided with an L-shaped connection seat matched with the lower shell body, and the top of the L-shaped connection seat is provided with a hinge shaft hinged to the end of the slide groove member 7.

[0030] In this technical solution, the L-shaped connection seat adopts a special shape, so that the fixed base 3 can be stably and reliably matched with the lower shell, which can ensure that the device will not be loose or shifted during use. The sliding groove member 7 and the hinge axis of the fixed base 3 can limit the rotational movement of the sliding groove member 7, ensuring that the groove member always rotates with the hinge axis as the center of the circle.

[0031] In some of the embodiments, a long groove is provided in the middle of the slide member 7, and a driving screw 2 is slidably provided in the long groove, and the driving screw 2 is fixedly installed on the side of the nut 4; the slide member 7 rotates with the hinge axis as the center and the driving screw 2 limited in the long groove as the guide, thereby driving the upper shell on the linkage member 6 to move synchronously.

[0032] In this technical solution, the fixing and release of the cable, as well as the opening and closing of the upper shell and the lower shell are achieved through the linkage setting of the slide member 7, the plug screw 2 and the linkage member 6. The long groove allows the plug screw 2 to slide in it. The plug screw 2 is fixedly installed on the side of the nut 4, so when the nut 4 moves up and down with the screw 1, the plug screw 2 will slide along the long groove. The slide member 7 rotates with the hinge axis as the center of the circle, so that the slide member 7 remains stable during the rotation process and drives the upper shell on the linkage member 6 to move synchronously.

[0033] In some embodiments, the wire pressing block 5 is arranged in an arc shape, and the curvature of the arc matches the diameter of the cable.

[0034] In the present technical solution, the wire pressing block 5 adopts an arc-shaped curved structure, which can increase the contact area with the cable, improve the compression effect with the cable, and can adapt to cables of different diameters.

[0035] In some embodiments, the bottom of the wire pressing block 5 is connected to a buffer device in the lower shell, and the buffer device cooperates with the wire pressing block to press the wires, and is suitable for cables with different wire diameters through spring deformation.

[0036] In the present technical solution, the cable compression action requires a certain buffer, otherwise it is easy to cause damage to the cable. Through the buffer device, the wire pressing block cooperates with the wire pressing, and the spring deformation is used to adapt to cables of different wire diameters. The deformation of the lower shell due to force can be avoided, the stress in the shell is reduced, and the protection of the cable by the device is reflected.

[0037] In some embodiments, the linkage member 6 is in the shape of a plate and is provided with a mounting hole that matches with the buffer spring of the upper shell.

[0038] In this technical solution, the linkage part 6 cooperates with the buffer spring to achieve buffering of the opening and closing action of the upper shell. Only when the lifting force of the screw rod 1 reaches a certain level, the linkage part 6 can drive the upper shell to move, avoiding random shaking of the upper shell caused by malfunction of the screw rod 1.

[0039] The usage process of the above embodiment is as follows:

[0040] like Figure 2 and Figure 3 As shown, when the cable needs to be compressed, the screw 1 is driven up by external force, driving the nut 4 and the slide member 7 to rotate, and the linkage member 6 transmits this rotation action to the upper shell, so that the upper shell and the lower shell are closed, and the wire pressing block 5 and the buffer device contact and compress the cable respectively, which can avoid the deformation of the lower shell due to force and reduce the stress inside the shell.

[0041] When the cable needs to be released, the screw rod 1 is lowered and the whole process is reversed.

[0042] Although the utility model is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the utility model is not limited thereto. Without departing from the spirit and essence of the utility model, ordinary technicians in the field can make various equivalent modifications or substitutions to the embodiments of the utility model, and these modifications or substitutions should be within the scope of the utility model / any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A wire-holding linkage device applied to overhead line equipment, comprising a wire-holding structure installed in the overhead line equipment, the overhead line equipment comprising an upper shell and a lower shell, characterized in that: The wire clamping structure comprises a vertically arranged screw rod (1), a nut (4) is fixedly installed on the upper part of the screw rod (1), a fixed base (3) is movably arranged on the lower part of the screw rod (1), and the fixed base (3) is fixed in the lower shell; the screw rod (1) drives the nut (4) to move up and down relative to the fixed base (3) under the action of external force; a slide groove member (7) is movably arranged on the side of the nut (4), the top of the slide groove member (7) is fixedly connected to the upper shell through a linkage member (6), the bottom of the slide groove member (7) contacts the cable through a wire pressing block (5), the wire pressing block (5) cooperates with the fixed base (3) to press the cable, and at the same time the linkage member (6) drives the upper shell to open and close.

2. The wire clamping linkage device for overhead line equipment according to claim 1, characterized in that: The fixed base (3) is provided with an L-shaped connection seat matched with the lower shell body, and the top of the L-shaped connection seat is provided with a hinge shaft hinged to the end of the slide groove member (7).

3. The wire-holding linkage device for overhead line equipment according to claim 1, characterized in that: The middle of the slide member (7) is provided with a long groove, in which a driving screw (2) is slidably provided, and the driving screw (2) is fixedly installed on the side of the nut (4); the slide member (7) rotates with the hinge axis as the center of the circle and the driving screw (2) limited in the long groove as the guide, thereby driving the upper shell on the linkage member (6) to move synchronously.

4. The line clamping linkage device for overhead line equipment according to claim 1, characterized in that: The wire pressing block (5) is arranged in an arc shape, and the curvature of the arc matches the diameter of the cable.

5. The line-holding linkage device for overhead line equipment according to claim 2, characterized in that: The bottom of the wire pressing block (5) is connected to a buffer device in the lower shell body, and the buffer device cooperates with the wire pressing block to press the wires, and is suitable for cables with different wire diameters through spring deformation.

6. The line-holding linkage device for overhead line equipment according to claim 1, characterized in that: The linkage member (6) is in the shape of a plate and is provided with a mounting hole which matches with the buffer spring of the upper shell.

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