Cable test tool

Abstract

The utility model relates to a cable test tool, which comprises two groups of mounting brackets arranged at intervals, each group of mounting brackets comprises a supporting base and a mounting plate detachably connected with the supporting base, the mounting plates of the two groups of mounting brackets are respectively provided with a double-head sleeve seat and a single-head sleeve seat, and the two ends of the double-head sleeve seat and one end of the single-head sleeve seat are respectively connected with three cable heads in an inserted manner; the two cable heads installed on the double-head sleeve seat are respectively used for fixing a first end of a to-be-tested cable and a first end of a test cable, the cable head installed on the single-head sleeve seat is used for fixing a second end of the to-be-tested cable, and the second end of the test cable forms an outdoor cable terminal. According to the utility model, the wiring of the cable to be tested in the insulation test process of high voltage such as withstand voltage can be more convenient, and the problem that the test voltage cannot be applied according to a conventional mode when the insulation test project is carried out on the cable equipped with an all-insulated cable head in the box transformer substation field is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable test field especially relates to a cable test frock. BACKGROUND

[0002] The existing box transformer has more projects (such as State Grid product, export product) needing cable connection, and both ends of the cable adopt full insulation cable head and terminal, and when insulation test (such as withstand voltage) is carried out, the cable made according to the structure of full insulation cable head cannot be directly subjected to voltage test (discharge distance, climbing distance is not enough) exposed in air, which leads to that test voltage cannot be applied to the cable to be tested through normal way.

[0003] For example, when the State Grid and export type box transformer require cable connection between high voltage cabinet and transformer, the cable head is full insulation plug-in type front connector; specifically, single pass cable seat is installed on the high voltage cabinet and the transformer, after the two ends of the cable are connected with two full insulation cable heads, the two full insulation cable heads are respectively plugged into the first end of the single pass cable seat on the high voltage cabinet and the first end of the single pass cable seat on the transformer, to realize full insulation of the cable end; the second end of the single pass cable seat can be connected with the single pass cable seat on another high voltage cabinet or another transformer through the switch in the switch cabinet. When power frequency withstand voltage test of the cable is carried out, due to the closed structure of the cable head, direct voltage test in air is not possible, and in order to make the test proceed normally, the conductor at both ends of the cable needs to be insulated and closed, and a terminal for connecting test voltage is reserved at one end of the cable. The common method at present is that when the two ends of the cable to be tested are respectively installed on the single pass cable seat on the high voltage cabinet and the transformer through two full insulation cable heads, a full insulation cable head is installed on the single pass cable seat on another high voltage cabinet, and a test special cable is installed, the second end of the sleeve pipe seat on the two high voltage cabinets is connected through the corresponding switch, and the test special cable is subjected to voltage, so that the cable to be tested can be tested. However, this method is inconvenient to operate, especially when multiple cables to be tested are tested, the operation is more complicated, and the high voltage cabinet itself is used as a conductor for testing, which has adverse effects on the switch cabinet. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a cable test frock, which can more conveniently connect the cable to be tested in the insulation test process of high voltage such as withstand voltage, and effectively solve the problem that test voltage cannot be applied to the cable to be tested through normal way when insulation test is carried out on the cable provided with full insulation cable head in the box transformer site.

[0005] The utility model discloses a cable test tool which is characterized by comprising two groups of installation support which are arranged at intervals, each group of installation support comprises a support base and an installation plate which is detachably connected with the support base, double-end sleeve pipe seats and single-end sleeve pipe seats are respectively arranged on the installation plates of the two groups of installation support, three cable heads are respectively inserted into the two ends of the double-end sleeve pipe seat and one end of the single-end sleeve pipe seat, the two cable heads arranged on the double-end sleeve pipe seat are respectively used for fixing the first end of the cable to be tested and the first end of the test cable, the cable head arranged on the single-end sleeve pipe seat is used for fixing the second end of the cable to be tested, and the second end of the test cable constitutes an outdoor cable terminal.

[0006] In a preferred embodiment of the utility model, the support base comprises two vertical columns and two base beams which are arranged at intervals, the two sides of the installation plate are connected with the top of the two vertical columns through corresponding fasteners, and the two base beams are connected with the bottom of the two vertical columns through corresponding fasteners.

[0007] In a preferred embodiment of the utility model, a cross beam is connected with the lower part of the two vertical columns, and a reinforcing plate is connected between the vertical column and the base beam.

[0008] In a preferred embodiment of the utility model, the cable head comprises a joint body, a first insertion port, a second insertion port and a cable insertion port which are arranged in the joint body and are in communication with each other, the first insertion port and the second insertion port are coaxially arranged and are perpendicular to the axis of the cable insertion port, the cable insertion port is used for inserting the end part of the cable to be tested or the test cable, the cable head is inserted into the corresponding end part of the double-end sleeve pipe seat or the single-end sleeve pipe seat through the first insertion port, a plug is inserted into the second insertion port, and the plug is connected with the corresponding end part of the double-end sleeve pipe seat or the single-end sleeve pipe seat and the end part of the cable to be tested or the test cable through a connecting assembly.

[0009] In a preferred embodiment of the utility model, the connecting assembly comprises a double-end screw and a nut, the first end of the double-end screw is fixedly connected with the corresponding end part of the double-end sleeve pipe seat or the single-end sleeve pipe seat, the second end is fixedly connected with the plug, the nut and the terminal connected with the end part of the cable to be tested or the test cable can be sleeved on the double-end screw, and the nut can press the terminal against the corresponding end part of the double-end sleeve pipe seat or the single-end sleeve pipe seat.

[0010] In a preferred embodiment of the utility model, the cable to be tested and the test cable each comprise a conductor and an insulating protective layer which is wrapped outside the conductor, the conductors at the two ends of the cable to be tested and the conductor at the first end of the test cable each extend out of the corresponding insulating protective layer and are connected with the corresponding terminal, and a stress cone is also arranged in the cable insertion port, and the stress cone can be sleeved on the insulating protective layer of the corresponding end part of the cable to be tested or the insulating protective layer of the first end of the test cable.

[0011] In a preferred embodiment of the utility model, the double-end sleeve seat includes a double-end main seat and a conductive rod, the conductive rod is arranged in the double-end main seat and the two ends of the conductive rod can extend out of the two ends of the double-end main seat, the first plug interface of the cable head can be sleeved and plugged outside the corresponding end of the double-end main seat, and the first end of the double-end screw rod can be fixedly connected with the corresponding end of the conductive rod.

[0012] In a preferred embodiment of the utility model, the single-end sleeve seat includes a single-end main seat and a first metal insert, the first plug interface of the cable head can be sleeved and plugged outside the first end of the single-end main seat, the first metal insert is arranged in the first end face of the single-end sleeve seat and the end of the first metal insert can extend out of the single-end sleeve seat, and the first end of the double-end screw rod can be fixedly connected with the first metal insert.

[0013] In a preferred embodiment of the utility model, mounting convex rings are arranged on the outer walls of the double-end sleeve seat and the single-end sleeve seat, and the mounting convex rings can be connected with the mounting plate through corresponding fasteners.

[0014] In a preferred embodiment of the utility model, a dustproof cover can be detachably sleeved outside the second plug interface of the cable head.

[0015] As described above, the tool of the utility model is characterized in that two groups of mounting brackets are matched, the double-end sleeve seat and the single-end sleeve seat are respectively mounted on the two groups of mounting brackets and three cable heads are jointly mounted, the test cable that can be connected in the air to receive electricity for applying test voltage is connected to one of the cable heads of the double-end sleeve seat, when the test cable needs to be tested, the two ends of the test cable are only needed to be connected with the other two cable heads, which is simple and convenient, can more conveniently connect the test cable in the insulation test process of high voltage such as voltage endurance, and can effectively solve the problem that the test voltage cannot be applied in the conventional way when the insulation test item is performed on the cable provided with the full-insulation cable head in the box transformer field. Meanwhile, the two groups of mounting brackets are independent brackets, and the spacing between the two groups of mounting brackets can be adaptively adjusted according to the length of the test cable, so that the adaptability and flexibility are higher. BRIEF DESCRIPTION OF DRAWINGS

[0016] The following drawings only aim to schematically illustrate and explain the utility model and do not limit the range of the utility model. Among them:

[0017] Figure 1 The structure schematic view of the cable test tool provided by the utility model is shown.

[0018] Figure 2 The sectional view of the cable test tool provided by the utility model is shown.

[0019] Figure 3 is shown.Figure 2 A magnified view of a portion of the double-ended sleeve seat.

[0020] Figure 4 for Figure 2 A magnified view of a portion of the single-ended sleeve seat.

[0021] Figure 5 A schematic diagram of the mounting bracket provided by this utility model.

[0022] Figure 6 A schematic diagram of the mounting bracket provided by this utility model after installing the double-headed sleeve seat.

[0023] Figure 7 An exploded view showing the assembly of the double-ended bushing socket, two cable heads, the cable to be tested, and the test cable provided for this utility model.

[0024] Figure 8 This is an exploded view showing the assembly of the single-ended sleeve base, cable head, and the cable to be tested provided by this utility model.

[0025] Explanation of icon numbers:

[0026] 1. Mounting bracket; 11. Mounting plate; 12. Column; 13. Base beam; 14. Crossbeam; 15. Reinforcing plate;

[0027] 2. Double-ended sleeve seat; 21. Double-ended main body seat; 22. Conductive rod; 23. Mounting protrusion ring;

[0028] 3. Single-ended sleeve seat; 31. Single-ended main body seat; 32. First metal insert;

[0029] 4. Cable head; 401. First cable head; 402. Second cable head; 403. Third cable head;

[0030] 41. Connector body; 411. First connector; 412. Second connector; 413. Cable connector; 414. Limiting boss; 42. Double-ended screw; 43. Nut; 44. Anti-loosening washer;

[0031] 5. Plug; 51. Second metal insert;

[0032] 61. Cable to be tested; 62. Test cable; 621. Terminal; 622. Sheath; 63. Conductor; 64. Insulation layer; 65. Terminal block;

[0033] 7. Stress cone;

[0034] 8. Dust cover. Detailed Implementation

[0035] In order to have a more clear understanding of the technical features, objects and effects of the present application, the specific embodiments of the present application will be described with reference to the drawings.

[0036] As shown in Figures 1 to 8 The present embodiment provides a cable test tool, which comprises two groups of installation supports 1 arranged at intervals; each group of installation supports 1 comprises a supporting base and an installation plate 11 detachably connected with the supporting base; a double-end bushing seat 2 and a single-end bushing seat 3 are respectively arranged on the installation plates 11 of the two groups of installation supports 1; three cable heads 4 are respectively inserted into the two ends of the double-end bushing seat 2 and one end of the single-end bushing seat 3; the two cable heads 4 arranged on the double-end bushing seat 2 are respectively used for fixing the first end of a cable to be tested 61 and the first end of a test cable 62; the cable head 4 arranged on the single-end bushing seat 3 is used for fixing the second end of the cable to be tested 61; and the second end of the test cable 62 constitutes an outdoor cable terminal.

[0037] Among them, the cable to be tested 61 here is the cable that cannot be directly subjected to test in air when performing insulation test such as power frequency withstand voltage test of cable, as mentioned in the background art, which uses full-insulated cable heads and terminals at both ends of the cable during use.

[0038] One cable head 4 is arranged on each of the two ends of the double-end bushing seat 2 and the single-end bushing seat 3; the three cable heads 4 are respectively marked as a first cable head 401, a second cable head 402 and a third cable head 403; during use, the two ends of the cable to be tested 61 are respectively inserted into the first cable head 401 and the third cable head 403, so as to insulate and close the conductors 63 at both ends of the test cable 62; the first end of the test cable 62 is inserted into the second cable head 402, so as to ensure the connection with the cable to be tested 61 and the full insulation of the end portion of the cable to be tested 61; the second end of the test cable 62 constitutes an outdoor cable terminal, which can be directly connected to electricity in air for applying test voltage, so as to perform corresponding test on the test cable 62.

[0039] Thus, the tool in the embodiment can install double-end sleeve pipe base 2 and single-end sleeve pipe base 3 on two sets of mounting supports 1 and install three cable heads 4 together through the cooperation of the two sets of mounting supports 1. The test cable 62 connected to one of the cable heads 4 of the double-end sleeve pipe base 2 can be connected to electricity in the air to apply a test voltage. When the test cable 62 needs to be tested, only the two ends of the test cable 62 need to be connected to the other two cable heads 4. The connection of the test cable 62 in the insulation test process of high voltage such as voltage endurance is simple and convenient, and can effectively solve the problem that the test voltage cannot be applied in the conventional manner when the insulation test item is performed on the cable provided with the full-insulation cable head 4 in the box transformer field. Meanwhile, the two sets of mounting supports 1 are independent supports, and the distance between the two supports can be adaptively adjusted according to the length of the test cable 62, which is more adaptive and flexible.

[0040] In the specific implementation mode, referring to Figure 5 and Figure 6 , the support base includes two spaced apart vertical columns 12 and two base beams 13. The two sides of the mounting plate 11 are connected to the top of the two vertical columns 12 through corresponding fasteners, and the two base beams 13 are connected to the bottom of the two vertical columns 12 through corresponding fasteners.

[0041] The axis of the vertical column 12 is vertically arranged, and the two vertical columns 12 are parallel and spaced apart. The two vertical columns 12 are symmetrically distributed on the two sides of the mounting plate 11. The mounting plate 11 can be connected to the vertical column 12 by bolts, for example. The vertical column 12 can be connected to the base beam 13 by self-tapping screws. Generally, the bottom end of the vertical column 12 is connected to the middle position of the base beam 13, and the vertical column 12 and the base beam 13 form a T shape to be placed more stably on the ground.

[0042] In order to ensure the distance between the two vertical columns 12, a cross beam 14 is connected to the lower part of the two vertical columns 12. The length direction of the cross beam 14 is horizontally arranged. In order to ensure the connection strength and the overall rigidity, a reinforcing plate 15 can also be connected between the vertical column 12 and the base beam 13. The reinforcing plate 15 can be a triangular plate body, for example, and the two straight edges of the triangular plate body are connected to the base beam 13 of the vertical column 12.

[0043] The vertical column 12 and the base beam 13 can be a channel steel, an angle steel or other beam structure according to the need. The mounting plate 11 can be a rectangular plate body and an insulating plate. The specific material is determined according to the need.

[0044] Further, the structures of the three cable heads 4 are completely the same, and all are full-insulation cable heads to ensure the insulation sealing of the cable end.

[0045] Referring to Figure 2 and Figure 7 and Figure 8The cable head 4 comprises a joint body 41, and a first plug interface 411, a second plug interface 412 and a cable plug interface 413 arranged in the joint body 41 and communicated with each other, the first plug interface 411 and the second plug interface 412 are coaxially arranged and perpendicular to the axis of the cable plug interface 413; the cable plug interface 413 is used for plugging the end of the cable to be tested 61 or the test cable 62, the cable head 4 is plugged into the corresponding end of the double-end bushing seat 2 or the single-end bushing seat 3 through the first plug interface 411, the plug 5 is arranged in the second plug interface 412, and the plug 5 is connected with the corresponding end of the double-end bushing seat 2 or the single-end bushing seat 3 and the end of the cable to be tested 61 or the test cable 62 through the connecting assembly.

[0046] The first plug interface 411 and the second plug interface 412 are horizontally communicated and respectively communicate with the two side end faces of the joint body 41, and the axis of the cable plug interface 413 is vertically arranged and downwardly communicates with the lower end face of the joint body 41. The whole cable head 4 constitutes a T-shaped plug to facilitate the connection of the corresponding cable and the bushing seat.

[0047] The connecting assembly is used for realizing the connection and fixation of the cable end, and realizing the line connection between the first end of the cable to be tested 61 and the first end of the test cable 62. The structure of the connecting assembly can be realized, for example, as follows: the connecting assembly comprises a double-end screw rod 42 and a nut 43, the first end of the double-end screw rod 42 is fixedly connected with the corresponding end of the double-end bushing seat 2 or the single-end bushing seat 3, the second end is fixedly connected with the plug 5; the nut 43 and the terminal 65 connected with the end of the cable to be tested 61 or the test cable 62 can be sleeved on the double-end screw rod 42, and the nut 43 can press the terminal 65 against the corresponding end of the double-end bushing seat 2 or the single-end bushing seat 3.

[0048] Generally, a lock washer 44 is also sleeved on the double-end screw rod 42, the lock washer 44 is clamped between the nut 43 and the terminal 65 to ensure the fastening effect.

[0049] Further, the cable to be tested 61 and the test cable 62 each comprise a conductor 63 and an insulating protective layer 64 wrapped outside the conductor 63, the conductors 63 at both ends of the cable to be tested 61 and the conductor 63 at the first end of the test cable 62 each extend out of the corresponding insulating protective layer 64 and are connected with the corresponding terminal 65, and a stress cone 7 is also arranged in the cable plug interface 413, the stress cone 7 can be sleeved on the insulating protective layer 64 of the corresponding end of the cable to be tested 61 or the insulating protective layer 64 of the first end of the test cable 62.

[0050] The stress cone 7 is an elastic member to fill the annular space between the insulating protective layer 64 and the inner wall of the cable plug interface 413, so as to ensure the insulating sealing effect. The second end of the test cable 62 is provided with a shed 622, and the second end is connected with a terminal 621, the terminal 621 and the shed 622 constitute an outdoor cable terminal.

[0051] Further, in order to facilitate the connection of each sleeve seat with the cable head 4 and the connecting assembly, the double-head sleeve seat 2 comprises a double-head main seat 21 and a conductive rod 22, the conductive rod 22 is arranged in the double-head main seat 21 and the two ends of the conductive rod 22 can extend out of the two ends of the double-head main seat 21, the first plug interface 411 of the cable head 4 can be sleeved and plugged outside the corresponding end of the double-head main seat 21, and the first end of the double-head screw rod 42 can be fixedly connected with the corresponding end of the conductive rod 22.

[0052] The single-head sleeve seat 3 comprises a single-head main seat 31 and a first metal insert 32, the first plug interface 411 of the cable head 4 can be sleeved and plugged outside the first end of the single-head main seat 31, the first metal insert 32 is arranged in the first end face of the single-head sleeve seat 3 and the end of the first metal insert 32 can extend out of the single-head sleeve seat 3, and the first end of the double-head screw rod 42 can be fixedly connected with the first metal insert 32. The second metal insert 51 is arranged in the first end face of the plug 5, and the second end of the double-head screw rod 42 can be fixedly connected with the second metal insert 51.

[0053] It can be understood that the above-mentioned wiring terminal 65 can abut against the end of the conductive rod 22 or the open end of the first metal insert 32 during installation. The double-head main seat 21, the single-head main seat 31 and the plug 5 are all insulating members, and the two ends of the conductive rod 22 can be provided with threaded holes (blind holes) which can be threadedly connected with the first end of the double-head screw rod 42; the first metal insert 32 and the second metal insert 51 are both cylindrical structures with one end open, the first metal insert 32 is fixedly arranged in the first end of the single-head main seat 31, and the second metal insert 51 is fixedly arranged in the first end of the plug 5; the inner wall of the first metal insert 32 has internal threads which can be threadedly connected with the first end of the double-head screw rod 42; the inner wall of the second metal insert 51 has internal threads which can be threadedly connected with the second end of the double-head screw rod 42, or the second end of the double-head screw rod 42 can also be interference-plugged and fixed with the second metal insert 51. The strength of the first metal insert 32 and the second metal insert 51 is higher than that of the single-head main seat 31 and the plug 5, which is more conducive to connecting the double-head screw rod 42.

[0054] Further, the outer wall of the two-end body seat 21 is a tapered surface gradually decreasing in diameter towards the two ends, the outer wall of the first end of the single-end body seat 31 is a tapered surface gradually decreasing in diameter towards the first end, and the outer wall of the plug 5 is a tapered surface gradually decreasing in diameter from the second end to the first end; the inner wall of the first plug-in interface 411 of the cable head 4 is a tapered surface gradually increasing in diameter towards the outside, and can match the tapered surfaces of the two ends of the two-end body seat 21 and the tapered surface of the first end of the single-end body seat 31, so as to facilitate the interference plug-in of the first plug-in interface 411 with the corresponding end of the two-end body seat 21 or the first end of the single-end body seat 31; the inner wall of the second plug-in interface 412 is a tapered surface gradually increasing in diameter towards the outside, and can match the tapered surface of the plug 5, so as to facilitate the interference plug-in of the second plug-in interface 412 with the plug 5. The inner wall of the cable plug-in interface 413 described above is a cylindrical surface, and the stress cone 7 is a cylindrical structure, which is sleeved on the cable and can be interference plug-in matched with the cable plug-in interface 413, so as to ensure the sealing property.

[0055] In order to facilitate the alignment of the wiring terminal 65 with the double-end screw rod 42 during installation, a limiting boss 414 can also be arranged on the inner wall of the joint body 41 and between the first plug-in interface 411 and the second plug-in interface 412, the limiting boss 414 is opposite to the cable plug-in interface 413, and when the wiring terminal 65 of the cable end is inserted into the horizontal cavity where the first plug-in interface 411 and the second plug-in interface 412 are located from the cable plug-in interface 413, the wiring terminal 65 can abut against the limiting boss 414 to be limited.

[0056] Further, in order to facilitate the connection of the double-end sleeve seat 2 and the single-end sleeve seat 3 with the mounting plate 11, mounting convex rings 23 are arranged on the outer walls of the double-end sleeve seat 2 and the single-end sleeve seat 3, and the mounting convex rings 23 can be connected with the mounting plate 11 through corresponding fasteners.

[0057] The mounting convex rings 23 are specifically formed on the middle outer wall of the two-end body seat 21 and the second end outer wall of the single-end body seat 31, mounting holes are arranged on the mounting plate 11, and the double-end sleeve seat 2 and the single-end sleeve seat 3 can be arranged in the corresponding mounting holes and connected with the mounting plate 11 through bolts.

[0058] Generally, the whole cable test tooling is equipped with multiple specifications of mounting plates 11, the mounting holes on different mounting plates 11 have different hole diameters, and the cable heads 4 mounted on different mounting plates 11 can be used to connect different voltage levels of the cables 62 to be tested. Each group of mounting supports 1 is connected with one specification of mounting plates 11, and the specifications of the mounting plates 11 mounted on the two groups of mounting supports 1 are the same. For different cross-sections of the cables 62 to be tested, the mounting plates 11 can adopt the same specification, and the terminal blocks 65 can adopt the matching specification. Therefore, by replacing the mounting plates 11 with different hole diameters or replacing the terminal blocks 65 with different specifications during the test, the tooling can be suitable for cable tests of different voltage levels such as 10kV and 35kV, and different cross-sections. The whole simple tooling can achieve the purpose of economy and practicability.

[0059] A plurality of mounting holes are formed on the mounting plate 11, a plurality of groups of double-head bushing seats 2 are arranged on one group of mounting supports 1, and a plurality of groups of single-head bushing seats 3 are arranged on the other group of mounting supports 1. The number of double-head bushing seats 2 and single-head bushing seats 3 is the same, so that more groups of cables 62 to be tested can be tested at the same time.

[0060] Further, a dust cover 8 can be detachably sleeved outside the second plug-in port 412 of the cable head 4 to play a dustproof protection role.

[0061] Hereinafter, the connection between the first end of the cable 62 to be tested and the cable head 4 and the double-head bushing seat 2 will be taken as an example to describe the installation process of the tooling in detail.

[0062] After the double-head bushing seat 2 is fixed to the mounting plate 11 of the mounting support 1, one end of the double-head screw M16 is screwed into the threaded hole at the end of the conductive rod 22 of the double-head bushing seat 2. After the first end of the cable 61 to be tested is properly terminated and the conductor 63 is exposed to a suitable size, the stress cone 7 is sleeved into the appropriate position of the cable 61 to be tested, the terminal block 65 (also referred to as a wire nose) is inserted into the conductor 63 of the cable to be tested and is pressed tightly by a suitable cold press mold according to the requirements, so that the terminal block 65 is in close and firm contact with the conductor 63. The cable to be tested with the terminal block 65 pressed is inserted into the cable plug-in port 413 of the cable head 4. It should be noted that the direction of the fixing hole of the terminal block 65 should be matched with the double-head screw 42. One end of the double-head screw M12 is inserted into the fixing hole of the terminal block 65, the lock washer 44 and the nut 43 are sequentially sleeved on the double-head screw 42, and the nut 43 is tightened by using a special sleeve wrench, so as to ensure that the terminal block 65 is in close contact with the conductive rod 22 in the double-head bushing seat 2. After the installation of the cable head 4 is completed, the open second plug-in port 412 of the cable head 4 is inserted into the plug 5 to completely seal the inside of the cable head 4. Finally, the dust cover 8 is sleeved to the tail of the cable head 4.

[0063] The other end of the double-head bushing seat 2 is also installed with the corresponding cable head 4 and the first end of the test cable 62 in the above manner, and the single-head bushing seat 3 is also installed with the corresponding cable head 4 and the second end of the cable to be tested 61 in the above manner, which will not be repeated here.

[0064] In summary, the tool in the embodiment is a simple cable test tool. Through the cooperation of the two groups of mounting brackets 1, the double-head bushing seat 2 is arranged on one group of mounting brackets 1 to insert the front plug of one end of the cable to be tested 61 and the first end of the test cable 62. The single-head bushing seat 3 is arranged on the other group of mounting brackets 1, so that the other end of the cable to be tested 61 inserted into the cable head 4 of the single-head bushing seat 3 can form an insulation terminal. Thus, the cable to be tested 61 can be conveniently subjected to pressure test, the wiring is convenient, and the distance of the cable to the ground is ensured.

[0065] The above is only a specific embodiment of the utility model, and is not used to limit the scope of the utility model. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principles of the utility model shall belong to the protection scope of the utility model.

Claims

1. A cable testing tool, characterized by, The two groups of mounting supports are arranged at intervals; Each group of mounting supports comprises a support base and a mounting plate detachably connected with the support base, the mounting plates of the two groups of mounting supports are respectively provided with double-head bushing seats and single-head bushing seats, the two ends of the double-head bushing seats and one end of the single-head bushing seat are respectively inserted with three cable heads, the two cable heads mounted on the double-head bushing seat are respectively used for fixing the first end of the cable to be tested and the first end of the test cable, the cable head mounted on the single-head bushing seat is used for fixing the second end of the cable to be tested, and the second end of the test cable constitutes an outdoor cable terminal.

2. The cable testing tool according to claim 1, wherein The support base comprises two vertical columns and two base beams arranged at intervals, the two sides of the mounting plate are connected with the top of the two vertical columns through corresponding fasteners, and the two base beams are connected with the bottom of the two vertical columns through corresponding fasteners.

3. The cable testing tool according to claim 2, wherein A cross beam is connected with the lower part of the two vertical columns, and a reinforcing plate is connected between the vertical columns and the base beams.

4. The cable testing tool of claim 1, wherein, The cable head comprises a connector body and a first insertion port, a second insertion port and a cable insertion port arranged in the connector body and communicating with each other, the first insertion port and the second insertion port are coaxially arranged and perpendicular to the axis of the cable insertion port; The cable insertion port is used for inserting the end of the cable to be tested or the test cable, the cable head is inserted into the corresponding end of the double-head bushing seat or the single-head bushing seat through the first insertion port, a plug is inserted into the second insertion port, and the plug is connected with the corresponding end of the double-head bushing seat or the single-head bushing seat and the end of the cable to be tested or the test cable through a connecting assembly.

5. The cable testing tool according to claim 4, wherein The connecting assembly comprises a double-head screw and a nut, the first end of the double-head screw is fixedly connected with the corresponding end of the double-head bushing seat or the single-head bushing seat, the second end is fixedly connected with the plug, the nut and the terminal connected with the end of the cable to be tested or the test cable can be sleeved on the double-head screw, and the nut can press the terminal against the corresponding end of the double-head bushing seat or the single-head bushing seat.

6. The cable testing tool according to claim 5, wherein The cable to be tested and the test cable each comprise a conductor and an insulating protective layer wrapped outside the conductor, the conductors at the two ends of the cable to be tested and the conductor at the first end of the test cable each extend out of the corresponding insulating protective layer and are connected with the corresponding terminal, and a stress cone is further arranged in the cable insertion port, the stress cone can be sleeved on the insulating protective layer of the corresponding end of the cable to be tested or the insulating protective layer of the first end of the test cable.

7. The cable testing tool according to claim 5, wherein ​ The double-head bushing seat comprises a double-head main seat and a conductive rod, the conductive rod is arranged in the double-head main seat and two ends of the conductive rod can extend out of two ends of the double-head main seat, the first plug-in interface of the cable head can be sleeved and plugged outside the corresponding end of the double-head main seat, and the first end of the double-head screw rod can be fixedly connected with the corresponding end of the conductive rod.

8. The cable testing tool of claim 5, wherein, The single-head bushing seat comprises a single-head main seat and a first metal insert, the first plug-in interface of the cable head can be sleeved and plugged outside the first end of the single-head main seat, the first metal insert is arranged in the first end face of the single-head bushing seat and the end of the first metal insert can extend out of the single-head bushing seat, and the first end of the double-head screw rod can be fixedly connected with the first metal insert. The second metal insert is arranged in the first end face of the plug, and the second end of the double-head screw rod can be fixedly connected with the second metal insert.

9. The cable testing tool of claim 1, wherein, The mounting convex ring is arranged on the outer wall of the double-head bushing seat and the single-head bushing seat, and the mounting convex ring can be connected with the mounting plate through corresponding fasteners.

10. The cable testing tool of claim 1, wherein, The dustproof cover is further detachably sleeved outside the second plug-in interface of the cable head.

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