Current transformer with bus clamping device

Abstract

The utility model discloses a current transformer with a bus clamping device, which comprises a movable mechanism, the movable mechanism comprises a transformer, the front surface of the transformer is fixedly connected with three fixing rods which are uniformly distributed on the front surface of the transformer, the surface of each fixing rod is movably connected with a movable block through a bearing, and the movable block is fixedly connected with the bus clamping device. The front surface of the movable block is fixedly connected with a connecting cylinder, the surface of the connecting cylinder is fixedly connected with a plurality of tooth blocks, the tooth blocks are uniformly distributed on the surface of the connecting cylinder, the surfaces of the tooth blocks are meshed with a transmission belt, and the outer side of the transmission belt is movably connected with a limiting wheel; the three limiting wheels are evenly distributed on the outer side of the transmission belt. When the clamping device is used, under the action of the movable mechanism and the limiting mechanism, a bus can be clamped, the phenomenon that the bus is loosened due to the fact that a traditional mutual inductor is not provided with an additional clamping device is avoided, and the clamping device has the advantage of clamping the bus.

Description

Technical Field

[0001] The utility model relates to the technical field of mutual inductors, in particular to a current mutual inductor with a busbar clamping device. Background Art

[0002] A current transformer is an electrical device based on the principle of electromagnetic induction. Its main function is to convert the large current on the primary side into a small current on the secondary side in proportion to facilitate measurement, monitoring and protection.

[0003] As shown in the patent application number of China Patent Network: 202022807437.X, the utility model discloses a current transformer, wherein the current transformer includes a transformer body and a blister shell, and the blister shell is wrapped on the transformer body. The technical solution of the utility model can not only improve the sealing of the current transformer and achieve good waterproof and dustproof effects, but also reduce the overall volume of the current transformer. The utility model has no additional clamping mechanism, which causes the busbar to be unstable, making it easy for the busbar to fall off when the power system is shaken or affected by external factors.

[0004] Usually, during the use of current transformers, the traditional transformers do not have additional clamping devices, which causes the busbar to be unstable, making it easy for the busbar to fall off when the power system is shaken or affected by external factors.

[0005] Therefore, it is necessary to redesign the transformer to effectively prevent the busbar from loosening. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the purpose of the utility model is to provide a current transformer with a busbar clamping device, which has the advantage of clamping the busbar and solves the problem that the busbar is easy to loosen.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a current transformer with a busbar clamping device, comprising: a movable mechanism, the movable mechanism comprising a transformer, the front of the transformer is fixedly connected with a fixed rod, there are three fixed rods and they are evenly distributed on the front of the transformer, the surface of the fixed rod is movably connected with a movable block through a bearing, the front of the movable block is fixedly connected with a connecting cylinder, the surface of the connecting cylinder is fixedly connected with a tooth block, there are multiple tooth blocks and they are evenly distributed on the surface of the connecting cylinder, the surface of the tooth block is meshed with a transmission belt, the outer side of the transmission belt is movably connected with a limiting wheel, there are three limiting wheels and they are evenly distributed on the outer side of the transmission belt, the inner wall of the limiting wheel is movably connected with a connecting rod through a bearing, and the back side of the connecting rod is fixedly connected to the front of the transformer;

[0008] The limiting mechanism includes a rotating knob, the back of which is fixedly connected to the front of the connecting tube, the inner wall of the rotating knob is threadedly connected to a screw, a protective box is provided on the back of the screw, a limiting groove is provided on the front of the protective box, there are three limiting grooves which are evenly distributed on the left side of the rotating knob, the left and right sides of the protective box are fixedly connected to connecting plates, and the inner side of the connecting plate is fixedly connected to the left and right sides of the transformer.

[0009] As a preferred embodiment of the present invention, a rotating block is fixedly connected to the front side of the screw rod, and the rotating block is used in conjunction with the screw rod.

[0010] As a preferred embodiment of the utility model, the surface of the rotating block is provided with anti-skid grooves, and there are multiple anti-skid grooves evenly distributed on the surface of the rotating block.

[0011] As a preferred embodiment of the utility model, a reinforcement ring is fixedly connected to the surface of the fixing rod, and the back side of the reinforcement ring is fixedly connected to the front side of the mutual inductor.

[0012] As a preferred embodiment of the utility model, limiting rings are provided on the front and back sides of the tooth block, and the inner walls of the limiting rings are fixedly connected to the surface of the connecting tube.

[0013] As a preferred embodiment of the utility model, the surface of the protection box is provided with arc corners, and the arc corners are used in conjunction with the protection box.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. When the utility model is used, the busbar can be clamped under the action of the movable mechanism and the limit mechanism, thereby avoiding the loosening of the busbar caused by the lack of additional clamping devices in the traditional mutual inductor, and making it have the advantage of clamping the busbar.

[0016] 2. The utility model can rotate the screw by setting a rotating block, making the process of rotating the screw faster and more convenient.

[0017] 3. The utility model can increase the friction force on the surface of the rotating block by arranging the anti-skid groove, thereby preventing the hand from slipping due to wetness during the rotation process.

[0018] 4. The utility model can reinforce the fixing rod by providing a reinforcement ring to prevent it from being subjected to excessive force, causing it to loosen or even fall off.

[0019] 5. The utility model can limit the transmission belt by setting a limit ring to prevent it from deviating during rotation.

[0020] 6. The utility model can make the edge of the protective box more rounded by setting the arc angle, preventing its sharp edges from scratching the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the limiting mechanism of the utility model;

[0023] Figure 3 This is a schematic diagram of the activity mechanism of the utility model;

[0024] Figure 4 It is an enlarged view of local parts of the utility model.

[0025] In the figure: 1. mutual inductor; 2. fixed rod; 3. movable block; 4. connecting tube; 5. tooth block; 6. transmission belt; 7. limiting wheel; 8. connecting rod; 9. rotating knob; 10. screw rod; 11. protective box; 12. limiting groove; 13. connecting plate; 14. rotating block; 15. anti-skid groove; 16. reinforcement ring; 17. limiting ring; 18. arc angle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figures 1 to 4 As shown, the utility model provides a current transformer with a busbar clamping device, comprising: a movable mechanism, the movable mechanism comprising a transformer 1, a fixed rod 2 is fixedly connected to the front of the transformer 1, and there are three fixed rods 2 that are evenly distributed on the front of the transformer 1, and a movable block 3 is movably connected to the surface of the fixed rod 2 through a bearing, and a connecting tube 4 is fixedly connected to the front of the movable block 3, and a tooth block 5 is fixedly connected to the surface of the connecting tube 4, and there are multiple tooth blocks 5 that are evenly distributed on the surface of the connecting tube 4, and a transmission belt 6 is meshed on the surface of the tooth block 5, and the outer side of the transmission belt 6 is movably connected to a limiting wheel 7, and there are three limiting wheels 7 that are evenly distributed on the outer side of the transmission belt 6, and the inner wall of the limiting wheel 7 is movably connected to a connecting rod 8 through a bearing, and the back side of the connecting rod 8 is fixedly connected to the front of the transformer 1;

[0028] The limiting mechanism includes a rotating knob 9, the back of which is fixedly connected to the front of the connecting tube 4, the inner wall of the rotating knob 9 is threadedly connected to a screw 10, a protective box 11 is provided on the back of the screw 10, a limiting groove 12 is provided on the front of the protective box 11, there are three limiting grooves 12 and they are evenly distributed on the left side of the rotating knob 9, the left and right sides of the protective box 11 are fixedly connected to connecting plates 13, and the inner side of the connecting plate 13 is fixedly connected to the left and right sides of the mutual inductor 1.

[0029] refer to Figure 2 A rotating block 14 is fixedly connected to the front side of the screw rod 10 , and the rotating block 14 is used in conjunction with the screw rod 10 .

[0030] As a technical optimization solution of the present invention, by providing a rotating block 14, the screw rod 10 can be rotated, making the process of rotating the screw rod 10 faster and more convenient.

[0031] refer to Figure 1 The surface of the rotating block 14 is provided with anti-skid grooves 15 , and there are multiple anti-skid grooves 15 evenly distributed on the surface of the rotating block 14 .

[0032] As a technical optimization solution of the present invention, by providing the anti-skid groove 15, the friction force on the surface of the rotating block 14 can be increased to prevent slipping caused by wet hands during the rotation process.

[0033] refer to Figure 3 A reinforcement ring 16 is fixedly connected to the surface of the fixing rod 2 , and the back side of the reinforcement ring 16 is fixedly connected to the front side of the mutual inductor 1 .

[0034] As a technical optimization solution of the present invention, by providing a reinforcement ring 16, the fixing rod 2 can be reinforced to prevent it from being subjected to excessive force, causing it to loosen or even fall off.

[0035] refer to Figure 4 Limiting rings 17 are provided on the front and back sides of the gear block 5 , and the inner walls of the limiting rings 17 are fixedly connected to the surface of the connecting tube 4 .

[0036] As a technical optimization solution of the present invention, by providing a limiting ring 17, the transmission belt 6 can be limited to prevent it from deviating during the rotation process.

[0037] refer to Figure 1 The surface of the protection box 11 is provided with an arc corner 18 , and the arc corner 18 is used in conjunction with the protection box 11 .

[0038] As a technical optimization solution of the present invention, by providing the arc angle 18, the edge of the protection box 11 can be made smoother, thereby preventing its sharp edges from scratching the operator.

[0039] The working principle and use process of the utility model are as follows: when in use, the busbar is inserted into the transformer 1, and then the rotating knob 9 is rotated counterclockwise, so that the rotating knob 9 drives the connecting tube 4 to rotate, and the connecting tube 4 drives the transmission belt 6 meshing with it to rotate through the tooth block 5 on its surface (the limiting wheel 7 limits the transmission belt 6 through the support of the connecting rod 8, so that its rotation is more stable), and when the transmission belt 6 rotates, it simultaneously drives the two connecting tubes 4 below to rotate, so that the three connecting tubes 4 synchronously drive the movable block 3 to rotate toward the center of the transformer 1 (the fixing rod 2 supports and fixes the movable block 3 through the bearing) until the limit position, and then the rotating block 14 is rotated clockwise, so that the rotating block 14 drives the screw 10 to rotate into the limiting groove 12, thereby fixing the movable block 3 and the busbar, avoiding the loosening of the busbar caused by the traditional transformer 1 without an additional clamping device, so that it has the advantage of clamping the busbar.

[0040] In summary: when the utility model is used, the busbar can be clamped under the action of the movable mechanism and the limiting mechanism, avoiding the loosening of the busbar caused by the lack of additional clamping device in the traditional mutual inductor 1, so that it has the advantage of clamping the busbar and solves the problem of easy loosening of the busbar.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A current transformer with a busbar clamping device, characterized in that: include: A movable mechanism, the movable mechanism comprising a mutual inductor (1), the front of the mutual inductor (1) being fixedly connected to a fixed rod (2), the number of the fixed rods (2) being three and evenly distributed on the front of the mutual inductor (1), the surface of the fixed rod (2) being movably connected to a movable block (3) via a bearing, the front of the movable block (3) being fixedly connected to a connecting cylinder (4), the surface of the connecting cylinder (4) being fixedly connected to a tooth block (5), the number of the tooth blocks (5) being multiple and evenly distributed on the surface of the connecting cylinder (4), the surface of the tooth block (5) being meshed with a transmission belt (6), the outer side of the transmission belt (6) being movably connected to a limiting wheel (7), the number of the limiting wheels (7) being three and evenly distributed on the outer side of the transmission belt (6), the inner wall of the limiting wheel (7) being movably connected to a connecting rod (8) via a bearing, the back side of the connecting rod (8) being fixedly connected to the front of the mutual inductor (1); The limiting mechanism comprises a rotating knob (9), the back side of the rotating knob (9) is fixedly connected to the front side of the connecting tube (4), the inner wall of the rotating knob (9) is threadedly connected to a screw rod (10), the back side of the screw rod (10) is provided with a protective box (11), the front side of the protective box (11) is provided with a limiting groove (12), the limiting grooves (12) are three and evenly distributed on the left side of the rotating knob (9), the left and right sides of the protective box (11) are fixedly connected to connecting plates (13), the inner side of the connecting plate (13) is fixedly connected to the left and right sides of the mutual inductor (1).

2. A current transformer with a busbar clamping device according to claim 1, characterized in that: A rotating block (14) is fixedly connected to the front side of the screw rod (10), and the rotating block (14) is used in conjunction with the screw rod (10).

3. A current transformer with a busbar clamping device according to claim 2, characterized in that: The surface of the rotating block (14) is provided with anti-skid grooves (15), and the anti-skid grooves (15) are multiple and evenly distributed on the surface of the rotating block (14).

4. A current transformer with a busbar clamping device according to claim 1, characterized in that: A reinforcement ring (16) is fixedly connected to the surface of the fixing rod (2), and the back side of the reinforcement ring (16) is fixedly connected to the front side of the mutual inductor (1).

5. A current transformer with a busbar clamping device according to claim 1, characterized in that: Limiting rings (17) are provided on the front and back sides of the tooth block (5), and the inner wall of the limiting ring (17) is fixedly connected to the surface of the connecting tube (4).

6. A current transformer with a busbar clamping device according to claim 1, characterized in that: The surface of the protection box (11) is provided with an arc corner (18), and the arc corner (18) is used in conjunction with the protection box (11).

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