Transformer cable connecting device

Abstract

The utility model belongs to the technical field of transformers, and discloses a transformer cable connecting device, which comprises a terminal box, a connecting piece and a first bridge frame, the terminal box is provided with a through hole, the connecting piece comprises plug-in ring parts which are oppositely arranged and a connecting part which is convexly arranged between the plug-in ring parts, the connecting part is fixed on the inner wall of the terminal box, and the first bridge frame is fixed on the inner wall of the terminal box. The plug-in ring part passes through the through hole and is arranged outside the terminal box. The first end of the first bridge is plugged in the plug-in ring part and abuts against the outer wall of the terminal box. According to the transformer cable connecting device provided by the utility model, the sealing performance between the terminal box and the first bridge frame is effectively ensured, the effective waterproof and dustproof effects are achieved, the first bridge frame and the interior of the terminal box are prevented from being affected with damp, internal cables are protected, and reliable work of the cables is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a transformer cable connection device. Background Art

[0002] In a voltage transformation device, a transformer cable connection device mainly includes components such as a terminal box and a cable tray. The cables connecting the transformer are laid in the cable tray and extend into the terminal box through the cable tray, thereby facilitating the threading and wiring of the cables, facilitating the management of the wire routing, effectively regularizing the cable routing, reducing the space occupation, preventing the cables from being redundant and disorderly, and facilitating the cable management.

[0003] In the prior art, when the cable tray is connected to the terminal box, an exposed connection structure is generally adopted, lacking protective measures, which makes the cables inside the cable tray vulnerable to damage, increasing the risks of cable short circuit and open circuit. In addition, the exposed connection structure has poor sealing performance. After long-term use, water vapor and dust in the external environment will enter the cable tray, aggravating the moisture inside the cable tray, corroding the metal sheath of the cables, and reducing the safety and service life of the cables. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a transformer cable connection device, which can effectively ensure the sealing performance of the connection part between the cable tray and the terminal box and reduce the risk of internal cable moisture absorption.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A transformer cable connection device includes:

[0007] A terminal box with a perforation;

[0008] A connecting piece, including a plugging ring part arranged oppositely and a connecting part protruding between the plugging ring parts. The connecting part is fixed to the inner wall of the terminal box, and the plugging ring part passes through the perforation and is placed outside the terminal box;

[0009] A first cable tray, the first end of which is plugged on the plugging ring part and abuts against the outer wall of the terminal box.

[0010] Preferably, the terminal box is provided with a first hole, the connecting part is correspondingly provided with a second hole, and a first bolt passes through the first hole and the second hole and is threadedly connected with a first nut;

[0011] A first grounding wire is arranged between the terminal box and the first cable tray; wherein,

[0012] The first end of the first ground wire is disposed on the first bolt that is screwed to the first nut. The first end of the first ground wire is located between the first nut and the fifth nut. The fifth nut is threadedly connected to the first bolt and jointly clamps the first end of the first ground wire with the first nut. The second end of the first ground wire is fixedly connected to the first bridge.

[0013] Preferably, the first bridge includes a first box body and a first cover body covering the first box body. A third hole is opened at the first end of the first box body, and a fourth hole is correspondingly opened at the first end of the first cover body. A second bolt passes through the third hole and the corresponding fourth hole and is threadedly connected to a second nut.

[0014] The second end of the first ground wire is disposed on the second bolt that is screwed to the second nut. The second end of the first ground wire is located between the second nut and the sixth nut. The sixth nut is threadedly connected to the second bolt and jointly clamps the second end of the first ground wire with the second nut.

[0015] Preferably, a second bridge is further included. The first end of the second bridge is fixedly connected to the second end of the first bridge.

[0016] Preferably, the first bridge includes a first box body and a first cover body covering the first box body. A fifth hole is opened at the second end of the first box body, and a sixth hole is correspondingly opened at the second end of the first cover body. A third bolt passes through the fifth hole and the corresponding sixth hole and is threadedly connected to a third nut.

[0017] The second bridge includes a second box body and a second cover body covering the second box body. A seventh hole is opened at the first end of the second box body, and an eighth hole is correspondingly opened at the first end of the second cover body. A fourth bolt passes through the seventh hole and the corresponding eighth hole and is threadedly connected to a fourth nut.

[0018] Preferably, a second ground wire is provided between the first bridge and the second bridge. Among them,

[0019] The first end of the second ground wire is disposed on the third bolt that is screwed to the third nut. The first end of the second ground wire is located between the third nut and the seventh nut. The seventh nut is threadedly connected to the third bolt and jointly clamps the first end of the second ground wire with the third nut.

[0020] The second end of the second ground wire is disposed on the fourth bolt that is screwed to the fifth nut. The second end of the second ground wire is located between the fourth nut and the eighth nut. The eighth nut is threadedly connected to the fourth bolt and jointly clamps the second end of the second ground wire with the fourth nut.

[0021] Preferably, both between the first end of the first bridge and the insertion ring portion, and / or between the second end of the first bridge and the first end of the second bridge are fixedly welded.

[0022] Preferably, a sealing sleeve is fixedly sleeved between the first bridge and the second bridge, and the sealing sleeve covers the weld between the first bridge and the second bridge.

[0023] Preferably, a wire bundling rack is provided above the perforation in the terminal box, and a plurality of wire bundling holes are formed in the wire bundling rack.

[0024] Preferably, the terminal box is provided with a fixing head, and a fixing hole for fixedly connecting with the transformer is formed in the fixing head.

[0025] Beneficial effects:

[0026] For the transformer cable connection device provided by the present utility model, by providing a connecting member, the connecting portion of the connecting member is fixed inside the terminal box, and the insertion ring portion of the connecting member passes through the perforation and extends outside the terminal box for the first bridge to be inserted. The first end of the first bridge is inserted into the insertion ring portion and abuts against the outside of the terminal box. The insertion fit between the first bridge and the insertion ring portion and the abutment with the terminal box can effectively ensure the sealing performance between the terminal box and the first bridge, prevent the cables inside the first bridge from being exposed, and also prevent moisture and dust in the external environment from entering the first bridge, avoid the internal cables from getting damp, and effectively ensure the safety and service life of the cables. Description of the drawings

[0027] Figure 1 is a schematic structural diagram of the transformer cable connection device provided by the present utility model;

[0028] Figure 2 is a schematic structural diagram of the connecting member provided by the present utility model;

[0029] Figure 3 is a partial schematic diagram of the transformer cable connection device provided by the present utility model;

[0030] Figure 4 is the present utility model in Figure 3 a partial enlarged schematic diagram at A;

[0031] Figure 5It is a cross-sectional view of the connection between the first end of the first box body provided by the present utility model and the first end of the first box cover;

[0032] Figure 6 It is a cross-sectional view of the connection between the second end of the first box body provided by the present utility model and the second end of the first box cover;

[0033] Figure 7 It is a schematic view of the first bridge and the second bridge from the first perspective provided by the present utility model;

[0034] Figure 8 It is a schematic view of the first bridge and the second bridge from the second perspective provided by the present utility model;

[0035] Figure 9 It is a cross-sectional view of the connection between the second box body and the second box cover provided by the present utility model;

[0036] Figure 10 It is a schematic structural view of the terminal box provided by the present utility model.

[0037] In the figure:

[0038] 1. Terminal box; 101. First hole; 11. Perforation; 12. Cable tie rack; 121. Cable tie hole; 13. Fixed head; 14. Lifting lug;

[0039] 2. Connector; 21. Plug-in ring part; 22. Connection part; 221. Second hole;

[0040] 3. First bridge; 31. First box body; 311. Third hole; 312. Fifth hole; 313. Mounting hole; 32. First cover; 321. Fourth hole; 322. Sixth hole;

[0041] 4. Second bridge; 41. Second box body; 411. Seventh hole; 42. Second cover; 421. Eighth hole;

[0042] 51. First bolt; 52. Second bolt; 53. Third bolt; 54. Fourth bolt;

[0043] 61. First nut; 62. Second nut; 63. Third nut; 64. Fourth nut; 65. Fifth nut; 66. Sixth nut; 67. Seventh nut; 68. Eighth nut;

[0044] 71. First grounding wire; 72. Second grounding wire;

[0045] 8. Sealing sleeve. Detailed implementation manners

[0046] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0047] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0048] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0049] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0050] This embodiment provides a transformer cable connection device. Referring to Figures 1 to 9 As shown, the transformer cable connection device includes a terminal box 1, a connector 2, and a first bridge 3. The terminal box 1 has a perforation 11. The connector 2 includes a plugging ring portion 21 arranged oppositely and a connecting portion 22 protruding between the plugging ring portions 21. The connecting portion 22 is fixed to the inner wall of the terminal box 1. The plugging ring portion 21 passes through the perforation 11 and is located outside the terminal box 1. The first end of the first bridge 3 is plugged on the plugging ring portion 21 and abuts against the outer wall of the terminal box 1.

[0051] Specifically, the first cable tray 3 is internally connected to the terminal box 1 through the perforation 11, enabling the cable to enter the terminal box 1 through the perforation 11 inside the first cable tray 3.

[0052] In this embodiment, the connecting portion 22 of the connecting member 2 is fixed inside the terminal box 1, and the insertion ring portion 21 of the connecting member 2 passes through the perforation 11 and extends outside the terminal box 1 for the first cable tray 3 to be inserted. The first end of the first cable tray 3 is inserted into the insertion ring portion 21 and abuts against the outside of the terminal box 1. The insertion fit between the first cable tray 3 and the insertion ring portion 21 and the abutment between the first cable tray 3 and the terminal box 1 can effectively ensure the sealing performance between the terminal box 1 and the first cable tray 3, prevent the cables inside the first cable tray 3 from being exposed, and also prevent water vapor and dust in the external environment from entering the first cable tray 3, avoid the internal cables from getting damp, and effectively ensure the safety and service life of the cables.

[0053] It can be understood that the first cable tray 3 is inserted on the insertion ring portion 21, the inner wall of the first cable tray 3 fits against the outer wall of the insertion ring portion 21, and combined with the abutment between the first cable tray 3 and the outer wall of the terminal box 1, the sealing performance can be effectively ensured.

[0054] Exemplarily, the connecting portion 22 and the insertion ring portion 21 are arranged at a 90° angle, and the connecting portion 22 abuts against the inner wall of the terminal box 1, which can effectively ensure the sealing performance.

[0055] Exemplarily, the insertion ring portion 21 and the connecting portion 22 are integrally bent and formed.

[0056] Specifically, the terminal box 1 and the connecting member 2 are fixed by the first bolt 51 and the first nut 61. The terminal box 1 is provided with a first hole 101, and the connecting portion 22 is correspondingly provided with a second hole 221. The first bolt 51 passes through the first hole 101 and the second hole 221 and is threadedly connected to the first nut 61. The threaded connection of the first bolt 51 and the first nut 61 realizes the reliable locking between the terminal box 1 and the connecting portion 22, and the connection is reliable and stable.

[0057] Exemplarily, the first end of the first cable tray 3 and the insertion ring portion 21 are fixed by welding. The welding connection method has low labor intensity and reliable and stable connection.

[0058] In this embodiment, a first grounding wire 71 is provided between the terminal box 1 and the first cable tray 3 for providing a grounding end. In this embodiment, the first end of the first grounding wire 71 is reliably fixed by the first nut 61 and the fifth nut 65. Specifically, the first end of the first grounding wire 71 is arranged on the first bolt 51 screwed with the first nut 61, the first end of the first grounding wire 71 is located between the first nut 61 and the fifth nut 65, the fifth nut 65 is threadedly connected to the first bolt 51 and jointly clamps the first end of the first grounding wire 71 with the first nut 61, and the second end of the first grounding wire 71 is fixedly connected to the first cable tray 3.

[0059] Specifically, on the premise that the first bolt 51 has been screwed into the first nut 61, the first end of the first ground wire 71 is disposed on the first bolt 51. At this time, the fifth nut 65 is screwed onto the first bolt 51, so that the fifth nut 65 gradually approaches the first nut 61, and finally the fifth nut 65 and the first nut 61 jointly clamp the first end of the first ground wire 71.

[0060] Exemplarily, a first conductive collar (not shown) is provided at the first end of the first ground wire 71. The first conductive collar is sleeved on the first bolt 51 that is screwed to the first nut 61. By providing the first conductive collar, reliable fixation of the first end of the first ground wire 71 can be ensured.

[0061] Further, the first cable tray 3 includes a first box body 31 and a first cover body 32 covering the first box body 31. A third hole 311 is opened at the first end of the first box body 31, and a corresponding fourth hole 321 is opened at the first end of the first cover body 32. The second bolt 52 passes through the third hole 311 and the corresponding fourth hole 321 and is threadedly connected to the second nut 62. It is worth mentioning that the first end of the first box body 31 and the first end of the first cover body 32 are the first end of the first cable tray 3; the second end of the first box body 31 and the second end of the first cover body 32 are the second end of the first cable tray 3. Specifically, the first cover body 32 and the first box body 31 are covered to form a first wire passing space for laying cables. The first cable tray 3 is set as an openable and closable structure, so that it is convenient to open the first cable tray 3 during maintenance, and thus it is convenient to perform maintenance on the internal cables without having to take out all the cables.

[0062] Further, reliable fixation of the second end of the first ground wire 71 is achieved through the second nut 62 and the sixth nut 66. Specifically, the second end of the first ground wire 71 is disposed on the second bolt 52 that is screwed to the second nut 62. The second end of the first ground wire 71 is located between the second nut 62 and the sixth nut 66. The sixth nut 66 is threadedly connected to the second bolt 52 and jointly clamps the second end of the first ground wire 71 with the second nut 62.

[0063] Specifically, the second end of the first ground wire 71 is disposed on the second bolt 52 at the first end of the first box body 31. On the premise that the second bolt 52 has been screwed into the second nut 62, the second end of the first ground wire 71 is disposed on the second bolt 52. At this time, the sixth nut 66 is screwed onto the second bolt 52, so that the sixth nut 66 gradually approaches the second nut 62, and finally the sixth nut 66 and the second nut 62 jointly clamp the second end of the first ground wire 71.

[0064] Exemplarily, a second conductive collar (not shown) is provided at the second end of the first ground wire 71. The second conductive collar is sleeved on the second bolt 52 that is screwed to the second nut 62. By providing the second conductive collar, reliable fixation of the second end of the first ground wire 71 can be ensured.

[0065] The above structure can achieve reliable fixation of the first ground wire 71. Compared with the conventional method of directly welding the first ground wire 71 to the bolt, the fixation is more reliable and stable, avoiding the situation of solder joint disconnection, and it is beautiful and practical.

[0066] Optionally, the transformer cable connection device further includes a second bridge 4. The first end of the second bridge 4 is fixedly connected to the second end of the first bridge 3. The provision of the second bridge 4 can extend the length of the overall bridge structure, so as to be applicable to cable laying over a longer distance.

[0067] Exemplarily, the second end of the first bridge 3 and the first end of the second bridge 4 are fixed by welding.

[0068] Exemplarily, the cross-sectional dimensions of the second bridge 4 and the first bridge 3 are set to be the same, so as to ensure reliable docking between the first bridge 3 and the second bridge 4 during connection, thus facilitating subsequent welding work.

[0069] Furthermore, a fifth hole 312 is opened at the second end of the first box body 31, and a sixth hole 322 is correspondingly opened at the second end of the first cover body 32. The third bolt 53 passes through the fifth hole 312 and the corresponding sixth hole 322 and is threadedly connected to the third nut 63. The locking cooperation between the second bolt 52 and the second nut 62 and the locking cooperation between the third bolt 53 and the third nut 63 can jointly lock the first end and the second end of the first bridge 3 reliably, ensuring reliable fixation of both ends of the first cover body 32 relative to the first box body 31.

[0070] In this embodiment, the second bridge 4 includes a second box body 41 and a second cover body 42 covering the second box body 41. A seventh hole 411 is opened at the first end of the second box body 41, and an eighth hole 421 is correspondingly opened at the first end of the second cover body 42. The fourth bolt 54 passes through the seventh hole 411 and the corresponding eighth hole 421 and is threadedly connected to the fourth nut 64. It is worth mentioning that the first end of the second box body 41 and the first end of the second cover body 42 are the first end of the second bridge 4; the second end of the second box body 41 and the second end of the second cover body 42 are the second end of the second bridge 4. Specifically, the second cover body 42 and the second box body 41 are covered to form a second wire passing space for laying cables. The second bridge 4 is set as an openable and closable structure, so as to facilitate opening the second bridge 4 during maintenance, and thus it is convenient to perform maintenance on the internal cables without having to take out all the cables.

[0071] Furthermore, a second grounding wire 72 is provided between the first bridge 3 and the second bridge 4 for providing a grounding terminal. Specifically, the first end of the second grounding wire 72 is fixed by a third nut 63 and a seventh nut 67, and the second end of the second grounding wire 72 is fixed by a fourth nut 64 and an eighth nut 68. Specifically, the first end of the second grounding wire 72 is disposed on a third bolt 53 screwed to the third nut 63. The first end of the second grounding wire 72 is located between the third nut 63 and the seventh nut 67. The seventh nut 67 is threadedly connected to the third bolt 53 and jointly clamps the first end of the second grounding wire 72 with the third nut 63. The second end of the second grounding wire 72 is disposed on a fourth bolt 54 screwed to the fourth nut 64. The second end of the second grounding wire 72 is located between the fourth nut 64 and the eighth nut 68. The eighth nut 68 is threadedly connected to the fourth bolt 54 and jointly clamps the second end of the second grounding wire 72 with the fourth nut 64.

[0072] Specifically, the first end of the second grounding wire 72 is disposed on the third bolt 53 at the second end of the first box body 31. On the premise that the third bolt 53 has been screwed into the third nut 63, the first end of the second grounding wire 72 is disposed on the third bolt 53. At this time, the seventh nut 67 is screwed into the third bolt 53, so that the seventh nut 67 gradually approaches the third nut 63. Finally, the seventh nut 67 and the third nut 63 jointly clamp the first end of the second grounding wire 72. Specifically, on the premise that the fourth bolt 54 has been screwed into the fourth nut 64, the second end of the second grounding wire 72 is disposed on the fourth bolt 54. At this time, the eighth nut 68 is screwed into the fourth bolt 54, so that the eighth nut 68 gradually approaches the fourth nut 64. Finally, the eighth nut 68 and the fourth nut 64 jointly clamp the second end of the second grounding wire 72. The above structure can achieve reliable fixation of the second grounding wire 72. Compared with the traditional method of directly welding the second grounding wire 72 to the bolt, the fixation is more reliable and stable, avoiding the disconnection of the solder joint, and is beautiful and practical.

[0073] Optionally, exemplarily, a third conductive collar (not shown) is provided at the first end of the second grounding wire 72, and a fourth conductive collar (not shown) is provided at the second end of the second grounding wire 72. The third conductive collar is sleeved on the third bolt 53 screwed to the third nut 63, and the fourth conductive collar is sleeved on the fourth bolt 54 screwed to the fourth nut 64. By providing the third conductive collar and the fourth conductive collar, reliable fixation of both ends of the second grounding wire 72 can be ensured.

[0074] Exemplarily, a first sealing ring (not shown) is provided between the first box body 31 and the first cover body 32, and a second sealing ring (not shown) is provided between the second box body 41 and the second cover body 42. The provision of the first sealing ring and the second sealing ring can further ensure the reliable sealing performance between the first bridge 3 and the second bridge 4.

[0075] Optionally, the number of the second bridge frames 4 can be set to be multiple, and the multiple second bridge frames 4 are connected in sequence. With such a setting, the length of the overall bridge frame structure can be further extended, so as to be applicable to the laying of cables over a longer distance.

[0076] Exemplarily, for the first bridge frame 3 and the second bridge frame 4, the second end of the first box body 31 is welded to the first end of the second box body 41, and the second end of the first box cover is welded to the first end of the second box cover. For two adjacent second bridge frames 4, the two second box bodies 41 arranged oppositely are welded, and the two second box bodies 41 arranged oppositely are welded.

[0077] In this embodiment, a sealing sleeve 8 is fixedly sleeved between the first bridge frame 3 and the second bridge frame 4, and the sealing sleeve 8 covers the weld seam between the first bridge frame 3 and the second bridge frame 4. The setting of the sealing sleeve 8 can reliably and effectively protect the weld seam between the first bridge frame 3 and the second bridge frame 4, and prevent the weld seam from cracking due to long-term contact with the external environment.

[0078] Optionally, when at least two second bridge frames 4 are provided, two adjacent second bridge frames 4 are fixed by welding, and the above-mentioned sealing sleeve 8 is also arranged between two adjacent second bridge frames 4 for covering the weld seam between the two second bridge frames 4.

[0079] Optionally, the fourth hole 321 and the sixth hole 322 on the first cover body 32 are respectively set as long holes, and the fourth hole 321 and the sixth hole 322 extend along the length direction of the first cover body 32. With such a setting, the distance between the first cover body 32 and the first box body 31 can be adjusted during installation, so that the first cover body 32 is adjusted to be flush with both sides opposite to the length direction of the first box body 31. The eighth hole 421 on the second cover body 42 is set as a long hole, and the eighth hole 421 extends along the length direction of the second cover body 42. With such a setting, the distance between the second cover body 42 and the second box body 41 can be adjusted during installation, so that the second cover body 42 is adjusted to be flush with both sides opposite to the length direction of the second box body 41.

[0080] Specifically, an installation hole 313 is formed on the first box body 31. The setting of the installation hole 313 can realize direct fixation with the transformer through a connecting member 2 such as a bolt. Optionally, the installation hole 313 is set as a long hole, which can facilitate a certain adjustment of the installation position of the first box body 31.

[0081] In this embodiment, a wire bundling rack 12 is arranged above the perforation 11 in the terminal box 1, and a plurality of wire bundling holes 121 are formed in the wire bundling rack 12. By arranging the wire bundling rack 12, a plurality of cables passing out of the first bridge 3 can respectively pass through the plurality of wire bundling holes 121, so that the cables in the terminal box 1 can be effectively regulated, ensuring the orderly passing of the cables and facilitating the management of the wiring.

[0082] Exemplarily, the terminal box 1 is provided with a fixing head 13, and a fixing hole for fixedly connecting with the transformer is formed in the fixing head 13. The front of the terminal box 1 is provided with a double-door structure, and the fixing head 13 is arranged on the back. The setting of the fixing hole enables direct fixation with the transformer through a connecting member 2 such as a bolt.

[0083] Exemplarily, a lifting lug 14 is further arranged on the top of the terminal box 1. The setting of the lifting lug 14 facilitates the lifting of the terminal box 1, which is reliable and convenient.

[0084] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A transformer cable connection device, characterized in that, Comprising: A terminal box (1) having a perforation (11); A connecting member (2) including oppositely arranged plugging ring portions (21) and a connecting portion (22) protruding between the plugging ring portions (21), the connecting portion (22) being fixed to the inner wall of the terminal box (1), and the plugging ring portions (21) passing through the perforation (11) and being disposed outside the terminal box (1); A first bridge (3), a first end of the first bridge (3) being plugged into the plugging ring portion (21) and abutting against the outer wall of the terminal box (1).

2. The transformer cable connection device according to claim 1, characterized in that, The terminal box (1) is provided with a first hole (101), and the connecting portion (22) is correspondingly provided with a second hole (221). A first bolt (51) passes through the first hole (101) and the second hole (221) and is in threaded connection with a first nut (61); A first grounding wire (71) is provided between the terminal box (1) and the first bridge (3); wherein, A first end of the first grounding wire (71) is disposed on the first bolt (51) screwed with the first nut (61), the first end of the first grounding wire (71) is located between the first nut (61) and a fifth nut (65), the fifth nut (65) is in threaded connection with the first bolt (51) and jointly clamps the first end of the first grounding wire (71) with the first nut (61), and a second end of the first grounding wire (71) is fixedly connected to the first bridge (3).

3. The transformer cable connection device according to claim 2, characterized in that, The first bridge (3) includes a first box body (31) and a first cover body (32) covering the first box body (31). A third hole (311) is provided at a first end of the first box body (31), and a fourth hole (321) is correspondingly provided at a first end of the first cover body (32). A second bolt (52) passes through the third hole (311) and the corresponding fourth hole (321) and is in threaded connection with a second nut (62); The second end of the first grounding wire (71) is disposed on the second bolt (52) screwed with the second nut (62), the second end of the first grounding wire (71) is located between the second nut (62) and a sixth nut (66), the sixth nut (66) is in threaded connection with the second bolt (52) and jointly clamps the second end of the first grounding wire (71) with the second nut (62).

4. The transformer cable connection device according to claim 1, characterized in that, Further included is a second bridge (4), a first end of the second bridge (4) being fixedly connected to a second end of the first bridge (3).

5. The transformer cable connection device according to claim 4, wherein, The first bridge (3) includes a first box body (31) and a first cover body (32) covering the first box body (31). A fifth hole (312) is provided at a second end of the first box body (31), and a sixth hole (322) is correspondingly provided at a second end of the first cover body (32). A third bolt (53) passes through the fifth hole (312) and the corresponding sixth hole (322) and is in threaded connection with a third nut (63); The second bridge frame (4) includes a second box body (41) and a second cover body (42) covering the second box body (41). A seventh hole (411) is formed at the first end of the second box body (41), and an eighth hole (421) is correspondingly formed at the first end of the second cover body (42). A fourth bolt (54) passes through the seventh hole (411) and the corresponding eighth hole (421) and is threadedly connected to a fourth nut (64).

6. The transformer cable connection device according to claim 5, characterized in that, A second grounding wire (72) is provided between the first bridge frame (3) and the second bridge frame (4); wherein, The first end of the second grounding wire (72) is arranged on the third bolt (53) screwed with the third nut (63). The first end of the second grounding wire (72) is located between the third nut (63) and the seventh nut (67). The seventh nut (67) is threadedly connected to the third bolt (53) and jointly clamps the first end of the second grounding wire (72) with the third nut (63); The second end of the second grounding wire (72) is arranged on the fourth bolt (54) screwed with the fourth nut (64). The second end of the second grounding wire (72) is located between the fourth nut (64) and the eighth nut (68). The eighth nut (68) is threadedly connected to the fourth bolt (54) and jointly clamps the second end of the second grounding wire (72) with the fourth nut (64).

7. The transformer cable connection device according to claim 4, characterized in that, Both between the first end of the first bridge frame (3) and the insertion ring portion (21) and / or between the second end of the first bridge frame (3) and the first end of the second bridge frame (4) are fixedly welded.

8. The transformer cable connection device according to claim 7, characterized in that, A sealing sleeve (8) is fixedly sleeved between the first bridge frame (3) and the second bridge frame (4), and the sealing sleeve (8) covers the weld between the first bridge frame (3) and the second bridge frame (4).

9. The transformer cable connection device according to claim 1, wherein, Above the perforation (11) in the terminal box (1), a wire bundling rack (12) is provided, and a plurality of wire bundling holes (121) are formed in the wire bundling rack (12).

10. The transformer cable connection device according to claim 1, wherein, The terminal box (1) is provided with a fixing head (13), and a fixing hole for fixedly connecting with a transformer is formed in the fixing head (13).

Images