Closed card

Abstract

The utility model relates to a closed card, which relates to the technical field of auxiliary equipment for electric power overhaul, and comprises a clamping assembly, an adjusting assembly, a supporting seat and a pressing assembly, a clamping area penetrating through the clamping assembly in the first direction is formed on the clamping assembly, the clamping assembly comprises at least two main clamps, every two adjacent main clamps are detachably connected, and the multiple main clamps are distributed on the periphery of the clamping area along the circumference of a virtual circle; the virtual circle is located in the clamping area, the central axis of the virtual circle is parallel to the first direction, the multiple adjusting assemblies are distributed in the circumferential direction of the virtual circle, and each adjusting assembly comprises a first screw and two first nuts; the first screw is perpendicular to the central axis of the virtual circle, one end of the first screw is connected to the main clamp, and the other end of the first screw is located in the clamping area. The two first nuts are in threaded connection with the first screw rod; the multiple supporting seats are distributed in the circumferential direction of the virtual circle and clamped between the two first nuts. The insulator clamping device has the effect of improving the clamping firmness degree of the insulator.

Description

Technical Field

[0001] The present application relates to the technical field of auxiliary equipment for power maintenance, and in particular to a closed card. Background Art

[0002] The transmission line is connected to the transmission line tower through an insulator string. When some insulators in the insulator string are damaged, the insulators can be repaired and replaced through power maintenance equipment. The closed card is a metal clamp for replacing insulators in the transmission line maintenance equipment. When in use, the closed card is clamped on the two insulator steel caps or bowl heads in front and behind the insulator to be replaced. A tightening piece is provided between the two closed cards. The tightening piece transfers the tension borne by the insulator string where the insulator to be replaced is located to the tightening piece and the closed cards on both sides of the tightening piece. After the tension is transferred, the insulating porcelain bottle can be replaced.

[0003] During operation, due to the difference in the size of the insulator itself or the diameter of the bowl head, the closed clamp needs to adapt to insulators of different sizes to achieve clamping and fixing of the insulator. In the related technology, such as a closed clamp disclosed in Chinese patent publication number CN206211399U, a plurality of evenly distributed shackles that can be rotated by a rotating shaft are arranged on the main body of the clamp and the inner diameter of the upper cover of the clamp, and elastic pressing sheets are arranged on the shackles and the inner cavity wall. When the closed clamp clamps the steel cap to work, the unloading block will automatically adjust itself according to the size of the steel cap, so that the unloading block is always properly matched with the steel cap.

[0004] With respect to the above-mentioned related technologies, when the diameters of insulators vary greatly, the deformation of the elastic pressing piece is within a certain range, resulting in the failure of the shackle to fit the insulator bowl head, thereby making it impossible for the shackle to firmly clamp the insulator. Therefore, it is urgently necessary to provide a closed clamp that can improve the firmness of clamping the insulator. Utility Model Content

[0005] In order to improve the firmness of clamping the insulator, the present application provides a closed card.

[0006] The closed card provided in this application adopts the following technical solution:

[0007] A closed card, comprising a card connection assembly, an adjustment assembly, a support seat and a pressing assembly;

[0008] The clamping assembly is formed with a clamping area penetrating the clamping assembly along a first direction, the clamping assembly includes at least two main cards, two adjacent main cards are detachably connected, and a plurality of the main cards are distributed along the circumference of a virtual circle on the outer periphery of the clamping area;

[0009] The virtual circle is located in the clamping area, and the central axis of the virtual circle is parallel to the first direction. The plurality of adjustment components are distributed along the circumference of the virtual circle, and the adjustment components include a first screw and two first nuts.

[0010] The first screw is arranged perpendicular to the central axis of the virtual circle, one end of the first screw is connected to the main clamp, and the other end is located in the clamping area;

[0011] The two first nuts are both threadedly connected to the first screw rod;

[0012] There are a plurality of support seats distributed along the circumference of the virtual circle, and the support seat is sandwiched between two of the first nuts;

[0013] There are multiple clamping assemblies distributed along the circumference of the virtual circle. The clamping assembly includes an elastic member and a pressure block. One end of the elastic member is fixedly connected to the support seat, and the other end is fixedly connected to the pressure block. The elastic member has a force that drives the pressure block to move toward the side close to the central axis of the virtual circle under recoverable deformation.

[0014] By adopting the above technical solution, during operation, the closed card needs to be fixed on the insulator. Due to the difference in size or diameter of the insulator, after the pressure block is moved to a suitable position by the first screw, the pressure block and the insulator are fitted under the elastic force of the elastic member. However, due to the limited deformation of the elastic member, when the insulators are of different sizes, the pressure block may have a smaller clamping force on the insulator. For this reason, the support seat has models of different sizes. In order to replace the support seat, the support seat is clamped between two first nuts, so that the first nut can fix the support seat and the first screw while facilitating the installation and disassembly of the support seat. During operation, the model of the support seat can be replaced according to the insulators of different sizes, so that the pressure block can clamp the insulator more firmly.

[0015] Optionally, the first screw is slidably connected to the main card along the first direction.

[0016] By adopting the above technical solution, if the height and length of the insulator bowl head are short, the clamping assembly may fall off easily when clamped. Therefore, the first screw can be slid along the main clamp to further drive the support seat and the pressing block to slide along the main clamp, so that the pressing block can be clamped in the middle position of the bowl head as much as possible to ensure the firmness of the clamping.

[0017] Optionally, the adjustment assembly also includes a bidirectional screw, which is arranged parallel to the first direction. The bidirectional screw is parallel to the first direction along the rotation axis of the main card, and each of the two threaded ends of the bidirectional screw with opposite rotation directions is threadedly connected to the first screw. The first screw is slidably connected to the main card along the first direction.

[0018] By adopting the above technical solution, in order to drive the first screw to slide along the main card, the bidirectional screw is rotatably connected to the main card, and a first screw is connected to each end of the bidirectional screw. The bidirectional screw is rotated to drive the two first screws to slide in the direction of approaching or moving away from each other, so as to further drive the pressing blocks to approach or move away from each other, so that the pressing blocks can adapt to insulators of different sizes.

[0019] Optionally, the clamping assembly further includes a support rod, which is arranged parallel to the telescopic direction of the elastic member, one end of the support rod is slidably connected to the support seat along its own rod length direction, and the other end is fixedly connected to the pressing block.

[0020] By adopting the above technical solution, since insulators are of different sizes, in order to make the pressing block fit the insulator as firmly as possible, a support rod is provided between the support seat and the pressing block, and the support rod makes the pressing block more firmly abut against the surface of the insulator.

[0021] Optionally, the support rod is a telescopic rod.

[0022] By adopting the above technical solution, in order to further enable the pressing block to clamp insulators of different sizes, the telescopic structure of the support rod can further expand the clamping range of the pressing block for insulators of different sizes, and at the same time can further improve the clamping force of the pressing block on the insulator.

[0023] Optionally, among the two first screws connected to the same bidirectional screw, the pressure block connected to any one of the first screws has a first slot at one end close to the center axis of the virtual circle, and the pressure block connected to the other first screw has a second slot at one end close to the center axis of the virtual circle, and the first slot and the second slot penetrate the main card in the circumferential direction of the virtual circle.

[0024] By adopting the above technical solution, since the insulator has an irregular shape, in order to clamp the insulator more firmly, the pressure blocks of the two first screws connected to the same bidirectional screw have different structures to clamp different parts of the insulator.

[0025] Optionally, among the two first screws connected to the same bidirectional screw, the first slot of the pressure block connected to any one of the first screws is arc-shaped on the side close to the center axis of the virtual circle; the second slot of the pressure block connected to the other first screw is inclined along a direction perpendicular to the rod length of the support rod toward a side away from the center axis of the virtual circle.

[0026] By adopting the above technical solution, the insulator itself is composed of a cylindrical and a disc structure, and a pressure block with the same structure may not be able to firmly clamp the insulator. Therefore, the cylindrical part of the insulator is clamped by the pressure block in the first slot so that the pressure block fits the surface of the insulator as much as possible, and the disc part of the insulator is clamped by the second slot.

[0027] Optionally, the adjustment assembly also includes a second nut, which is threadedly connected to the support rod, and the second nut is located on the side of the support seat away from the pressure block, and the second nut blocks the support rod from sliding toward the center axis of the virtual circle.

[0028] By adopting the above technical solution, in order to ensure the adjustability of the distance between the pressing block and the insulator, the sliding distance of the support rod support seat can be adjusted by the second nut to further adjust the distance between the pressing block and the insulator.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. This application can improve the clamping firmness of insulators of different sizes;

[0031] 2. The present application can use the telescopic structure of the support rod to enable the pressing block to clamp the insulator as much as possible;

[0032] 3. The present application can further enable the pressing block to clamp different parts of the insulator by setting up multiple support seats to achieve better clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the main card in the closed card of this application;

[0034] Figure 2 It is the main view of the overall structure of the closed card;

[0035] Figure 3 is a schematic diagram of the structure of the regulating component;

[0036] Figure 4 It is a cross-sectional view of a bidirectional screw;

[0037] Figure 5 It is an enlarged view of part A;

[0038] Figure 6 It is a structural schematic diagram of the support seat of the clamping assembly;

[0039] Figure 7 is a schematic diagram of the structure of the clamping assembly;

[0040] Figure 8 It is a schematic diagram of the structure of the closed card and insulator;

[0041] Fig. 9 It is a schematic diagram of the structure of the briquette.

[0042] Explanation of the reference numerals: 1. Card assembly; 11. Main card; 12. Clamping area; 13. Lug; 14. First groove; 15. Second groove; 2. Adjustment assembly; 21. Bidirectional screw; 211. Mounting seat; 212. Handle; 22. First screw; 23. First nut; 24. Sleeve; 3. Support seat; 4. Clamping assembly; 41. Support rod; 411. First connecting rod; 412. Second connecting rod; 413. Third nut; 42. Second nut; 43. Pressing block; 431. First slot; 432. Second slot; 44. Elastic member. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-9 The present application is further described in detail. The present application embodiment discloses a closed card. Figure 1 and Figure 2 The closed card includes a card connection component 1, an adjustment component 2, a support seat 3 and a clamping component 4. The card connection component 1 is connected to the adjustment component 2, and the adjustment component 2 is connected to the support seat 3. The adjustment component 2 is used to drive the support seat 3 to slide along the card connection component 1. The support seat 3 is connected to multiple clamping components 4, and the clamping components 4 are used to clamp and fix the insulator.

[0044] Reference Figure 1 The card-jointing assembly 1 includes at least two main cards 11. Two adjacent main cards 11 are spliced ​​together to form a clamping area 12 for clamping an insulator. The clamping area 12 penetrates the main card 11 along a first direction. In this embodiment, two main cards 11 are provided. Each main card 11 is in a semicircular ring shape. Two semicircular main cards 11 are spliced ​​to form a circular ring structure. For ease of installation, the splicing interfaces of the two main cards 11 are integrally connected with lugs 13. The two lugs 13 on one side are hinged, and the two lugs 13 on the other side are fixed by screws.

[0045] Reference Figure 3 and Figure 4 , the virtual circle is located in the clamping area 12, the central axis of the virtual circle is parallel to the first direction, and multiple adjustment components 2 are distributed along the circumference of the virtual circle. The adjustment component 2 includes a bidirectional screw 21 and multiple first screws 22. The main card 11 is close to the support seat 3. The side is provided with a first groove 14 and a second groove 15. The first groove 14 is connected to the second groove 15. The first groove 14 is located on the side of the second groove 15 away from the support seat 3. One end of the bidirectional screw 21 is located in the first groove 14, and the other end is inserted into the first groove 14 and extends to the outside of the main card 11. The bidirectional screw 21 is rotatably connected to the main card 11. The bidirectional screw 21 is parallel to the first direction along the rotation axis of the main card 11. In this embodiment, the first groove 14 is circular and the second groove 15 is rectangular;

[0046] Reference Figure 3 and Figure 4 In order to connect the first screw 22 with the bidirectional screw 21, two mounting seats 211 are sleeved on the outer periphery of the bidirectional screw 21, and the two mounting seats 211 are respectively threadedly connected to the threaded ends of the bidirectional screw 21 with opposite thread rotation directions, and each mounting seat 211 is fixedly connected with a first screw 22, and the first screw 22 is inserted into the second groove 14 and extends into the clamping area 11. In order to facilitate personnel operation, a handle 212 is fixedly sleeved on one end of the bidirectional screw 21 located on the outer side of the main card 1. The personnel can rotate the handle 212 to make the bidirectional screw 21 rotate along the main card 1, and then the bidirectional screw 21 drives the two first screws 22 to approach or move away from each other through the mounting seats 211. That is to say, when the bidirectional screw 21 is rotated, the two mounting seats 211 are slidably connected to the main card 1 along the first direction, further driving the first screw 22 to slide along the first direction and connect to the main card 1.

[0047] Reference Figure 2 , Figure 3 and Figure 5 , multiple support seats 3 are distributed along the circumference of the virtual circle, and the support seat 3 is threadedly connected to the end of the first screw 22 away from the main card 1. In this embodiment, there are two support seats 3, and each support seat 3 is semi-circular. The two support seats 3 are arranged in a structure that can be spliced ​​into a circular ring. The two support seats 3 are disconnected at the splicing point of the two main cards 1 so that the support seats 3 can rotate with the main card 1.

[0048] Reference Figure 2 , Figure 3 and Figure 5 In order to fix the first screw rod 22 and the support seat 3, the adjusting component 2 also includes two first nuts 23, the two first nuts 23 are threadedly connected to the first screw rod 22, and the support seat 3 is clamped between the two first nuts 23. Since the contact surface between the support seat 3 and the first nut 23 is arc-shaped, in order to improve the fixing effect of the first screw rod 22 and the support seat 3, a sleeve 24 is provided between each first nut 23 and the support seat 3. The sleeve 24 is sleeved on the outer periphery of the first screw rod 22, one end of the sleeve 24 contacts the first nut 23, and the other end fits with the support seat 3. The end of the sleeve 24 close to the support seat 3 is arc-shaped, and the arc opening faces the side close to the central axis of the virtual circle, so that the end of the sleeve 24 with the arc surface has as much contact area as possible to fit with the support seat 3. In order to further improve the stability of the support seat 3, in this embodiment, the adjusting component 2 is provided with four.

[0049] Reference Figure 6 and Figure 7, multiple clamping assemblies 4 are distributed along the circumference of the virtual circle, and multiple clamping assemblies 4 coincide with the line where the diameter of the virtual circle is located, the clamping assembly 4 includes a support rod 41, a second nut 42 and a pressure block 43, the support rod 41 includes a first connecting rod 411, a second connecting rod 412 and a third nut 413, one end of the first connecting rod 411 passes through the support seat 3 and is slidably connected to the support seat 3, and the other end is slidably connected to the second connecting rod 412, the second connecting rod 412 is sleeved on the outer peripheral side of the first connecting rod 411, and the first connecting rod 411 is connected to the second connecting rod 412 through the third nut 413. In this embodiment, the third nut 413 is a screw, the third nut 413 is passed through and fixedly connected to the second connecting rod 412, and the third nut 413 passes through the second connecting rod 412 and is pressed against the outer wall of the first connecting rod 411. The end of the second connecting rod 412 away from the first connecting rod 411 is welded to the pressure block 43;

[0050] Reference Figure 7 In order to limit the distance between the pressing block 43 and the insulator, the second nut 42 is threadedly connected to the first connecting rod 411, and the second nut 42 is located at the end of the support seat 3 away from the pressing block 43, and the second nut 42 is overlapped on the support seat 3. The length of the support rod 41 can be adjusted according to the diameter of the insulator bowl head so that the pressing block 43 presses the insulator. In order to further improve the clamping force of the insulator, in this embodiment, three clamping components 4 are provided on each support seat 3.

[0051] Reference Figure 7 During operation, the pressing block 43 may shake during the clamping process of the insulator. In order to make the pressing block 43 always fit the insulator, the clamping assembly 4 also includes an elastic member 44. The elastic member 44 is sleeved on the outer periphery of the support rod 41. One end of the elastic member 44 is fixedly connected to the side of the support seat 3 away from the main card 1, and the other end is fixedly connected to the side of the pressing block 43 close to the main card 1. In this embodiment, the elastic member 44 is a compression spring, and the elastic member 44 has a force to drive the pressing block 43 to move toward the side away from the main card 1 under a recoverable deformation.

[0052] Reference Figure 8 Since the deformation range of the elastic member 44 is limited and the sizes of the insulators vary to a certain extent, the pressing block 43 may still be unable to compress the insulator when the deformation range of the elastic member 44 is limited. The pressing block 43 is connected to the main card 1 through the support seat 3. Therefore, in this embodiment, the support seat 3 has models of different sizes. According to the size of the insulator, the insulator can be clamped by replacing the support seats 3 of different sizes, that is, when the insulator is larger, a larger support seat 3 can be used; when the insulator is smaller, a smaller support seat 3 can be used.

[0053] Reference Figure 7 , Figure 8 and Fig. 9 Since the insulator itself has an irregular shape and is a structure formed by splicing a cylinder and a disc, in order to ensure that the pressing block 43 can fit with the insulator, the two second connecting rods 412 connected to the same bidirectional screw 21 have a first card slot 431 at one end of the pressing block 43 connected to one of the second connecting rods 412 close to the center axis of the virtual circle. The first card slot 431 is inclined along the rod length direction perpendicular to the support rod 41 toward the side away from the center axis of the virtual circle, so that the first card slot 431 can clamp and fix the disc-shaped part of the insulator; the pressing block 43 connected to the other second connecting rod 412 has a second card slot 432 at one side close to the center axis of the virtual circle, and the second card slot 432 penetrates the main card 11 in the circumferential direction of the virtual circle. The second card slot 432 is arc-shaped on one side close to the center axis of the virtual circle, so as to better fit and fix with the cylindrical part of the insulator.

[0054] The implementation principle of a closed card in the embodiment of the present application is:

[0055] When in use, loosen the screws and rotate one main card 1 to open the two main cards 1, place the insulator in the clamping area 11, and then splice and merge the two main cards 1. The staff rotates the handle to rotate the bidirectional screw 21 along the main card 1. The bidirectional screw 21 drives the two first screws 22 to slide along the main card 1 through the two mounting seats 211, and further drives the two support seats 3 to move closer to or away from each other. The distance between the two support seats 3 is determined according to the size of the insulator. After determination, the first nut 23 is rotated to fix the support seat 3; the distance between the pressing block 43 and the insulator can be adjusted by rotating the second nut 42, and the distance between the pressing block 43 and the insulator can be further adjusted by the telescopic structure of the support rod 41. Multiple pressing blocks 43 can clamp and fix the insulator, and the elastic member 44 can provide a force for the compression between the pressing block 43 and the insulator;

[0056] Since the deformation range of the elastic member 44 is limited and the sizes of the insulators are different, during operation, the model of the support seat 3 can be replaced to adapt to the size of the insulator, so as to better clamp the insulator.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A closed card, characterized in that: It comprises a clamping assembly (1), an adjusting assembly (2), a supporting seat (3) and a pressing assembly (4); The clamping assembly (1) is formed with a clamping area (12) penetrating the clamping assembly (1) along a first direction, the clamping assembly (1) comprises at least two main cards (11), two adjacent main cards (11) are detachably connected, and a plurality of the main cards (11) are distributed along the circumference of a virtual circle on the outer periphery of the clamping area (12); The virtual circle is located in the clamping area (12), and the central axis of the virtual circle is parallel to the first direction. The plurality of adjustment components (2) are distributed along the circumference of the virtual circle, and the adjustment component (2) comprises a first screw rod (22) and two first nuts (23); The first screw rod (22) is arranged perpendicular to the central axis of the virtual circle, one end of the first screw rod (22) is connected to the main clamp (11), and the other end is located in the clamping area (12); The two first nuts (23) are both threadedly connected to the first screw rod (22); A plurality of the support seats (3) are distributed along the circumference of the virtual circle, and the support seat (3) is sandwiched between two of the first nuts (23); The clamping assembly (4) is distributed in plurality along the circumference of the virtual circle. The clamping assembly (4) comprises an elastic member (44) and a pressure block (43). One end of the elastic member (44) is fixedly connected to the support seat (3), and the other end is fixedly connected to the pressure block (43). The elastic member (44) has a force to drive the pressure block (43) to move toward a side close to the central axis of the virtual circle under recoverable deformation.

2. The closed card according to claim 1, characterized in that: The first screw rod (22) is slidably connected to the main card (11) along the first direction.

3. The closed card according to claim 2, characterized in that: The adjustment assembly (2) further comprises a bidirectional screw (21), wherein the bidirectional screw (21) is arranged parallel to the first direction, and the bidirectional screw (21) is parallel to the first direction along the rotation axis of the main card (11), and each of the two threaded ends of the bidirectional screw (21) with opposite rotation directions is threadedly connected to one of the first screws (22).

4. The closed card according to claim 3, characterized in that: The clamping assembly (4) further comprises a support rod (41), which is arranged parallel to the telescopic direction of the elastic member (44), one end of the support rod (41) is slidably connected to the support seat (3) along the length direction of the support rod, and the other end is fixedly connected to the pressing block (43).

5. The closed card according to claim 4, characterized in that: The support rod (41) is a telescopic rod.

6. The closed card according to claim 5, characterized in that: Of the two first screws (22) connected to the same bidirectional screw (21), the pressing block (43) connected to any one of the first screws (22) has a first slot (431) at one end close to the central axis of the virtual circle, and the pressing block (43) connected to the other first screw (22) has a second slot (432) at one end close to the central axis of the virtual circle, and the first slot (431) and the second slot (432) penetrate the main clamp (11) in the circumferential direction of the virtual circle.

7. The closed card according to claim 6, characterized in that: Among the two first screw rods (22) connected to the same bidirectional screw rod (21), the second slot (432) of the pressing block (43) connected to any one of the first screw rods (22) is arc-shaped on the side close to the central axis of the virtual circle; and the first slot (431) of the pressing block (43) connected to the other first screw rod (22) is inclined along a direction perpendicular to the length of the support rod (41) and toward a side away from the central axis of the virtual circle.

8. The closed card according to claim 7, characterized in that: The adjustment assembly (2) further comprises a second nut (42), wherein the second nut (42) is threadedly connected to the support rod (41), and the second nut (42) is located on a side of the support seat (3) away from the pressure block (43), and the second nut (42) blocks the sliding of the support rod (41) toward the central axis of the virtual circle.

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