Reactor traction connection redundancy device

Abstract

The utility model discloses a kind of redundant devices of traction connection of flow-restricting transformer, including box, connecting sheet, traction coil and first fastener, first extension is provided on connecting sheet, second extension is provided on traction coil, first extension and second extension are mutually abutting arrangement, and first extension and second extension are set with second fastener for fixing both, compared with prior art, the utility model has the advantages that first through-hole and second through-hole are provided on traction coil, first threaded hole and second threaded hole are provided on connecting sheet, traction screw is arranged between first through-hole and first threaded hole, second through-hole and second threaded hole are sleeved on traction bolt, when traction bolt is accidentally broken and transformer is tripped, signal stream sent or received by transformer can still pass through traction screw and traction bolt matched with traction screw to form a passage, keep signal stream transmission or reception, avoid the situation that flow-restricting transformer is tripped.

Description

Technical Field

[0001] This utility model relates to the field of choke transformer technology, and in particular to a redundant device for traction connection of choke transformer. Background Technology

[0002] Choke transformers are installed on both sides of the rail insulation joint to conduct traction current return and match signal current, so that traction current and signal current can be transmitted normally in the track circuit without interfering with each other.

[0003] The existing choke transformer uses a double-hole internal connecting plate. The bolts of each group of choke transformers are first connected by connecting plates, and then the upper and lower traction coils are fixed to the bolts of each group. Due to improper tightening of nuts by the operator, the traction bolts break, causing a break in the circuit between the adjacent parallel traction bolts. This will prevent the track signal from being transmitted smoothly to the rail, resulting in a red light band and affecting the safety of train operation. Utility Model Content

[0004] In view of the above problems, the technical problem to be solved by this utility model is to provide a redundant device for traction connection of choke transformer.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a redundant traction connection device for a choke transformer, including a housing, a connecting piece, a traction coil and a first fastener, wherein the first fastener passes through the housing, the connecting piece and the traction coil and is fastened to fix the connecting piece and the traction coil inside the housing, wherein the connecting piece is provided with a first extension and the traction coil is provided with a second extension, the first extension and the second extension are provided abutting against each other, and a second fastener is provided at the first extension and the second extension for fixing the two.

[0006] A further preferred embodiment of this utility model is: the first fastener is a traction bolt, which fixes the connecting piece and the traction coil to the inside of the housing.

[0007] A further preferred embodiment of this utility model is: the number of traction bolts is six, and the six traction bolts are grouped in pairs to form three pairs of parallel traction bolt assemblies.

[0008] A further preferred embodiment of this utility model is that the bridging range of the connecting piece covers at least two adjacent traction bolts.

[0009] A further preferred embodiment of this utility model is: the second fastener is a traction screw, which passes through the first extension and is fixedly installed with the second extension.

[0010] A further preferred embodiment of this utility model is: the connecting piece is provided with a first threaded hole and a second threaded hole, and the first threaded hole is provided on the first extension.

[0011] A further preferred embodiment of this utility model is: the traction coil is provided with a first through hole and a second through hole, and the first through hole is provided on the second extension.

[0012] A further preferred embodiment of this utility model is: the straight segment between the first through hole and the second through hole abuts against the connecting piece to form a conductive path with surface contact.

[0013] A further preferred embodiment of this utility model is that the connecting piece adopts a plate-like structure to increase the heat dissipation area.

[0014] Compared with the prior art, this utility model has the following advantages: The traction coil is provided with a first through hole and a second through hole, and the connecting piece is provided with a first threaded hole and a second threaded hole. A traction screw for fixing is passed through the first through hole and the first threaded hole. The second through hole and the second threaded hole are sleeved on the traction bolt. If the operator's improper operation causes the tightening torque to be too large, the traction bolt will break, resulting in an open circuit between the broken traction bolt and its paired parallel traction bolts. At this time, the signal flow emitted or received by the choke transformer can still form a path through the traction screw and the traction bolts paired with the traction screw, maintaining the signal flow transmission or reception, and avoiding the situation of the choke transformer being open-circuited. Attached Figure Description

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0016] Figure 1 A schematic diagram of the overall structure of the redundant device for traction connection of the choke transformer;

[0017] Figure 2 Exploded view of the traction coil, traction screw, and connecting piece;

[0018] Figure 3 This is a schematic diagram of the overall structure of the connecting piece;

[0019] Figure 4 This is a schematic diagram of the overall structure of the traction coil.

[0020] In the diagram: 1. First connecting piece; 2. First traction bolt; 3. Second traction bolt; 4. Third traction bolt; 5. Fourth traction bolt; 6. Fifth traction bolt; 7. Sixth traction bolt; 8. Traction screw; 9. Locking nut; 10. First spring washer; 11. First flat washer; 12. Second connecting piece; 13. Third connecting piece; 14. Traction coil; 15. Second spring washer; 16. Second flat washer; 17. First threaded hole; 18. Second threaded hole; 19. First through hole; 20. Second through hole; 21. First extension; 22. Second extension. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0022] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0023] This embodiment mainly describes the redundant device for traction connection of the choke transformer, as detailed below:

[0024] The choke transformer traction connection redundancy device includes a housing, a connecting piece, a traction coil 14 and a first fastener. Specifically, the first fastener is a traction bolt, which passes through the housing, the connecting piece, and the traction coil 14 and is tightened to fix the connecting piece and the traction coil 14 to the inside of the housing.

[0025] The connecting piece is provided with a first extension 21, and the traction coil 14 is provided with a second extension 22. The first extension 21 and the second extension 22 are abutted against each other, and a second fastener for fixing the two is provided at the first extension 21 and the second extension 22. Specifically, the second fastener is a traction screw 8.

[0026] like Figure 1 , Figure 2 As shown, the box body is equipped with several traction bolts. Specifically, there are six traction bolts, which are installed sequentially through the rear side plate of the box body. The spacing between adjacent traction bolts is in accordance with the provisions of TB / T1869.7-2016. The six traction bolts are designated as the first traction bolt 2, the second traction bolt 3, the third traction bolt 4, the fourth traction bolt 5, the fifth traction bolt 6, and the sixth traction bolt 7.

[0027] Adjacent traction bolts are grouped into three pairs to form parallel traction bolt assemblies. Specifically, the first traction bolt 2 and the second traction bolt 3 are a pair, the third traction bolt 4 and the fourth traction bolt 5 are a pair, and the fifth traction bolt 6 and the sixth traction bolt 7 are a pair.

[0028] The traction bolt is equipped with a connecting piece and a traction coil 14. The connecting piece and the traction coil 14 are abutted against each other, and the connecting piece is located between the traction coil 14 and the rear side plate of the box.

[0029] The connecting plate adopts a plate-like structure to increase the heat dissipation area. When the choke transformer is working, each traction bolt will carry a current of hundreds or even thousands of amperes, which will generate a lot of heat. However, if the heat dissipation in the choke transformer box relies solely on air convection, the temperature rise of the traction bolt will be relatively large. The enlarged connecting plate not only reduces the contact resistance between the traction coil 14 and the traction bolt, but also increases the heat dissipation area at the contact point between the traction bolt and the traction coil 14, thereby reducing the temperature rise of the traction bolt inside the choke transformer box and avoiding large thermal stress on the traction bolt.

[0030] like Figure 3 As shown, the bridging range of the connecting piece covers at least two adjacent traction bolts. Specifically, there are three connecting pieces, namely the first connecting piece 1, the second connecting piece 12 and the third connecting piece 13. Each connecting piece is provided with a first threaded hole 17 and a second threaded hole 18, and the first threaded hole 17 is provided on the first extension 21.

[0031] Two adjacent traction bolts are fixedly mounted on a connecting plate. Specifically, the first traction bolt 2 and the second traction bolt 3 are mounted on the first connecting plate 1, the third traction bolt 4 and the fourth traction bolt 5 are mounted on the second connecting plate 12, and the fifth traction bolt 6 and the sixth traction bolt 7 are mounted on the third connecting plate 13.

[0032] like Figure 4 As shown, the main structure of the traction coil 14 is mainly made of oxygen-free copper flat wire. The top of the traction coil 14 is provided with a first through hole 19 and a second through hole 20. The first through hole 19 is provided on the second extension 22. The first through hole 19 and the second through hole 20 are provided corresponding to the first threaded hole 17 and the second threaded hole 18. A traction screw 8 for fixing is passed between the first through hole 19 and the first threaded hole 17. By tightening the traction screw 8, the traction coil 14 can be firmly fixed on the connecting piece. The second through hole 20 and the second threaded hole 18 are sleeved on the traction bolt. The traction coil 14 is closely attached to the connecting piece through the first through hole 19 and the second through hole 20, which increases the contact area between the traction coil 14 and the traction bolt, thereby increasing the current conduction area and reducing the contact resistance.

[0033] When an operator mishandles the process and applies excessive tightening torque, causing the traction bolt to break, a circuit will be broken between the broken traction bolt and its paired parallel traction bolts. In this case, the signal flow transmitted or received by the choke transformer can still be maintained through the traction screw 8 and the traction bolts paired with it, thus preventing the choke transformer from breaking.

[0034] The second traction bolt 3, the third traction bolt 4, the fourth traction bolt 5, and the fifth traction bolt 6 are connected and fixed to the traction coil 14 through the cooperation of the second through hole 20 and the second threaded hole 18. The first traction bolt 2 and the sixth traction bolt 7 are not connected to the traction coil 14.

[0035] like Figure 2 As shown, a first flat washer 11 and a first spring washer 10 are provided between the traction screw 8 and the traction coil 14. The first flat washer 11 is located between the first spring washer 10 and the traction coil 14, and the first spring washer 10 is located between the traction screw 8 and the first flat washer 11. When the traction screw 8 is tightened, the first spring washer 10 and the first flat washer 11 reduce the risk of loosening of the connection between the traction screw 8 and the traction coil 14, and improve the reliability and life of the connection.

[0036] A second flat washer 16 and a second spring washer 15 are provided between the traction bolt and the traction coil 14. The second flat washer 16 is located between the second spring washer 15 and the traction coil 14. The traction bolt is provided with a locking nut 9 for fastening, and there are two locking nuts 9 on each traction bolt. The second spring washer 15 is located between the locking nut 9 and the second flat washer 16, and the second spring washer 15 and the second flat washer 16 are pressed tightly onto the traction coil 14 by the locking nut 9.

[0037] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] The redundant choke transformer traction connection device provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand this utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A redundant traction connection device for a choke transformer, comprising a housing, a connecting piece, a traction coil, and a first fastener, wherein the first fastener passes through and secures the housing, the connecting piece, and the traction coil to fix the connecting piece and the traction coil inside the housing, characterized in that, The connecting piece is provided with a first extension, and the traction coil is provided with a second extension. The first extension and the second extension are arranged close to each other, and a second fastener is provided at the first extension and the second extension for fixing the two together.

2. The redundant choke transformer traction connection device according to claim 1, characterized in that, The first fastener is a traction bolt, which fixes the connecting piece and the traction coil to the inside of the housing.

3. The redundant choke transformer traction connection device according to claim 2, characterized in that, The number of traction bolts is six, and the six traction bolts are grouped into three pairs of parallel traction bolt assemblies.

4. The redundant choke transformer traction connection device according to claim 2, characterized in that, The bridging range of the connecting piece covers at least two adjacent traction bolts.

5. The redundant traction connection device for a choke transformer according to claim 1, characterized in that, The second fastener is a traction screw, which passes through the first extension and is fixedly installed with the second extension.

6. The redundant traction connection device for a choke transformer according to claim 1, characterized in that, The connecting piece is provided with a first threaded hole and a second threaded hole, and the first threaded hole is provided on the first extension.

7. The redundant choke transformer traction connection device according to claim 1, characterized in that, The traction coil is provided with a first through hole and a second through hole, and the first through hole is provided on the second extension.

8. The redundant choke transformer traction connection device according to claim 7, characterized in that, The straight segment between the first through hole and the second through hole abuts against the connecting piece to form a conductive path with surface contact.

9. The redundant traction connection device for a choke transformer according to claim 1, characterized in that, The connecting piece adopts a plate-like structure to increase the heat dissipation area.

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