Electric power test connector convenient to disassemble and assemble

Abstract

The invention provides an electric power test connector convenient to disassemble and assemble, and relates to the technical field of electric power overhaul. The electric power test connector comprises a conductive main body, a guide hole is arranged in the conductive main body, and a driving slide bar is slidably arranged in the guide hole. One end of the conductive main body is provided with a plurality of limiting holes, and positioning balls are arranged in the limiting holes. A first elastic piece is arranged between the driving sliding rod and the guiding body, and the driving conical face on the driving sliding rod is pressed on the positioning ball under the elastic acting force of the first elastic piece. A gasket made of a conductive material sleeves the inner side of the positioning ball on the conductive main body; and a second elastic piece used for preventing the gasket from moving towards the inner side is arranged between the gasket and the conductive main body. And the middle part of the conductive main body is sleeved with an insulating protective sleeve. The power test connector convenient to disassemble and assemble not only can adapt to power line noses with different thicknesses, but also can ensure the reliability of connection between the connector and the power line noses.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power maintenance, in particular to a power test connector convenient to disassemble and assemble. BACKGROUND

[0002] In the operation and maintenance system of urban distribution network, the medium-voltage cable plug-in terminal, as the core component connecting the cable with the ring network cabinet, branch box and other distribution equipment, directly determines the stability and reliability of power supply of the distribution network. In order to ensure the safe and efficient operation of the distribution network, targeted experimental detection needs to be carried out on the cable plug-in terminal at multiple key nodes. These experimental scenarios have become an important part of the standardized operation and maintenance system, such as pre-commissioning test of new cable, power-off maintenance "stop test" scenario and fault positioning and diagnosis test.

[0003] However, in all the above experimental scenarios of medium-voltage cable plug-in terminal, there is a common and prominent technical difficulty: most of the existing experimental detection technical solutions need to completely disassemble the elbow-shaped sheath of the plug-in terminal before building the experimental circuit and carrying out various electrical tests. This operation requirement not only increases the complexity of the experimental process, but also causes a series of technical problems that need to be solved in the actual execution process, such as difficulty and uncontrollability of disassembling the elbow-shaped sheath, low experimental efficiency and impact on power supply reliability, high risk of damage to the insulation performance of the terminal, and high operation and maintenance cost.

[0004] In view of the above problems, the patent with application number 2025111364974 discloses a power cable plug-in terminal experimental auxiliary tool. By using this tool, the power cable experiment can be further carried out without disassembling the elbow-shaped sheath and quickly installing and fixing on the plug-in terminal. However, this solution has the following two problems: Firstly, it cannot adapt to power line noses of different thicknesses. In addition, even for power line noses of the same thickness, due to the existence of processing errors, this solution cannot guarantee reliable contact between the power line nose and the gasket, and therefore cannot guarantee the reliability of the contact.

[0005] Secondly, the tailstock connected with the cable in this solution is directly connected with the slide rod, and the slide rod is a driving member for driving the positioning ball to protrude or retract. In actual work, once the cable connected with the tailstock is accidentally touched, it may cause the position of the slide rod to change, thereby causing the connector to fall off from the power line nose. SUMMARY

[0006] In view of the above problems, the power test connector convenient to disassemble and assemble provided by the present application can not only adapt to power line noses of different thicknesses, but also guarantee the reliability of the connection between the connector and the power line nose.

[0007] The technical scheme adopted by the present application to solve its technical problems is: A power test connector convenient to disassemble, comprising a conductive main body, a guide hole is arranged in the conductive main body, and a driving slide rod is slidably arranged in the guide hole; One end of the conductive main body is provided with a plurality of limiting holes, and a positioning ball is arranged in the limiting hole; A first elastic member is arranged between the driving slide rod and the guide main body, and a driving cone surface on the driving slide rod is pressed on the positioning ball under the elastic force of the first elastic member; A gasket made of conductive material is sleeved on the inner side of the conductive main body located on the inner side of the positioning ball, and a second elastic member for preventing the gasket from moving inward is arranged between the gasket and the conductive main body; An insulating protective sleeve is sleeved on the middle part of the conductive main body.

[0008] Further, the conductive main body comprises a mandrel, one end of the mandrel is provided with a tail seat, and the other end of the mandrel is provided with a connecting head.

[0009] Further, the tail seat is connected and fixed with the mandrel in a detachable manner.

[0010] Further, the connecting head is connected and fixed with the mandrel in a detachable manner.

[0011] Further, a first inner hole is arranged in the connecting head, a second inner hole is arranged in the mandrel, the first inner hole and the second inner hole jointly form the guide hole, one end of the connecting head facing the mandrel is inserted into the second inner hole, and the connecting head is connected and fixed with the mandrel in a threaded connection manner.

[0012] Further, a first flat mouth is arranged on the connecting head, and a second flat mouth is arranged on the mandrel.

[0013] Further, the insulating protective sleeve is sleeved on the outside of the mandrel, one end of the mandrel away from the tail seat is provided with a limiting boss, the insulating protective sleeve is limited between the tail seat and the limiting boss, and the second flat mouth is arranged on the limiting boss.

[0014] Further, the driving cone surface presses the positioning ball from the outside, the first elastic member is used to prevent the driving slide rod from moving to the side of the connecting head, and one end of the driving slide rod facing the tail seat is provided with an adjusting screw.

[0015] Further, the second elastic member is a wave elastic sheet sleeved on the conductive main body.

[0016] Further, the diameter of the opening at the outer end of the limiting hole is smaller than the diameter of the positioning ball.

[0017] The beneficial effects of the present application are: 1. The power test connector convenient to disassemble provided by the present application sets a second elastic member on the side of the back of the gasket away from the connecting end, which can ensure reliable contact between the gasket and the power line nose and avoid poor contact, and can also adapt to power line noses of different thicknesses.

[0018] 2. The power test connector convenient to disassemble provided by the embodiment of the present application sets a mandrel, and the connecting head and the tail seat are connected and fixed with the mandrel, thereby forming a rigid whole, and the driving slide rod is in sliding connection with the rigid whole. In this way, the force applied to the tail seat will not directly act on the driving slide rod, thereby avoiding the problem that the connecting head falls off the power line nose caused by no contact with the cable or the tail seat. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The figure is a perspective structural schematic view of the power test connector convenient to disassemble provided by the embodiment of the present application; Figure 2 The figure is a front view of the power test connector convenient to disassemble provided by the embodiment of the present application; Figure 3 The figure is an A-A sectional view of the power test connector convenient to disassemble provided by the embodiment of the present application; Figure 2 The figure is an enlarged structural schematic view of the A part in the power test connector convenient to disassemble provided by the embodiment of the present application; Figure 4 Figure 3 The figure is an enlarged structural schematic view of the A part in the power test connector convenient to disassemble provided by the embodiment of the present application; Figure 5 The figure is a perspective structural schematic view of the connecting head; Figure 6 The figure is a perspective structural schematic view of the mandrel; Figure 7 The figure is a perspective structural schematic view of the insulating protective sleeve; Figure 8 The figure is a perspective structural schematic view of the driving slide rod; Figure 9 The figure is a perspective structural schematic view of the tail seat; Figure 10 The figure is a perspective structural schematic view of the second elastic member; Figure 11 The figure is a working state diagram of the power test connector convenient to disassemble provided by the embodiment of the present application.

[0020] ​In the figure: 1, conductive main body; 11, mandrel; 111, second inner hole; 112, threaded hole; 113, limiting boss; 1131, second flat mouth; 12, tail seat; 121, first connecting part; 122, limiting plate; 123, second connecting part; 13, connecting head; 131, first inner hole; 132, fourth shaft section; 1321, limiting hole; 1322, first flat mouth; 133, fifth shaft section; 134, sixth shaft section; 135, second step surface; 136, third step surface; 2, drive slide rod; 21, first shaft section; 22, second shaft section; 23, third shaft section; 231, groove; 2311, drive cone surface; 24, first step surface; 3, positioning ball; 4, first elastic member; 5, gasket; 6, second elastic member; 7, adjusting screw; 8, insulating protective sleeve; 81, fourth step surface; 91, elbow-shaped protective sleeve; 92, cable; 93, power line nose. DETAILED DESCRIPTION

[0021] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application, and the described embodiments are only some of the embodiments of the present application, not all the embodiments. All other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments of the present application shall fall within the protection scope of the present application.

[0022] In order to facilitate the understanding of the specific embodiments of the present application, the coordinate system is defined as shown in Figure 1 , and the left-right direction is transverse, the front-back direction is longitudinal, and the up-down direction is vertical.

[0023] As shown in Figure 1 , Figure 2 and Figure 3 , a power test connector convenient to disassemble includes a conductive main body 1, a guide hole is arranged in the conductive main body 1, a drive slide rod 2 is arranged in the guide hole, the drive slide rod 2 forms a guide fit with the guide hole and can slide axially along the guide hole.

[0024] The conductive body 1 is provided with a plurality of limiting holes 1321 at one end, and the plurality of limiting holes 1321 are uniformly arranged in the circumferential direction around the axis of the guide hole. The limiting hole 1321 is provided with a positioning ball 3 inside, and the diameter M of the outer end opening of the limiting hole 1321 is smaller than the diameter D of the positioning ball 3. That is, the positioning ball 3 is limited in the limiting hole 1321 and cannot be taken out from the outer end opening.

[0025] The first elastic member 4 is arranged between the driving slide rod 2 and the guide body in the guide hole, and the driving cone surface 2311 on the driving slide rod 2 is pressed on the positioning ball 3 under the elastic force of the first elastic member 4. The positioning ball 3 protrudes from the outer side of the conductive body 1 under the pushing action of the driving cone surface 2311.

[0026] The gasket 5 made of conductive material is sleeved on the inner side (the side close to the middle position of the conductive body 1 is the inner side) of the positioning ball 3 on the conductive body 1. The second elastic member 6 is arranged between the gasket 5 and the conductive body 1 to prevent the gasket 5 from moving inward (the side close to the middle position of the conductive body 1 is the inner side).

[0027] As shown in Figure 3 The conductive body 1 includes a mandrel 11, one end of the mandrel 11 is fixedly provided with a tail seat 12, and the other end of the mandrel 11 is fixedly provided with a connecting head 13. According to the coordinate system shown in Figure 1 The tail seat 12 is arranged at the left end of the mandrel 11, and the connecting head 13 is arranged at the right end of the mandrel 11. The mandrel 11, tail seat 12 and connecting head 13 jointly form a conductive body 1 in a rigid structure. The mandrel 11, tail seat 12 and connecting head 13 are all made of conductive material.

[0028] Preferably, the gasket 5, mandrel 11, tail seat 12 and connecting head 13 are all made of copper.

[0029] As a specific embodiment, the connecting head 13 is provided with a first inner hole 131, the mandrel 11 is provided with a second inner hole 111 coaxially arranged with the first inner hole 131, the first inner hole 131 and the second inner hole 111 are in communication, and jointly form the guide hole. The limiting hole 1321 is arranged on the connecting head 13 and is in communication with the first inner hole 131.

[0030] As a specific embodiment, the connecting head 13 is provided with four limiting holes 1321 uniformly arranged in the circumferential direction around the axis of the first inner hole 131.

[0031] As one specific implementation method, such as Figure 4 As shown, in this embodiment, the limiting hole 1321 includes a cylindrical hole section and a tapered hole section in sequence along the radial direction away from the first inner hole 131. The diameter of the cylindrical hole section is equal to the diameter D of the positioning ball 3. The small end of the tapered hole section faces outward (towards the side radially away from the first inner hole 131), and the diameter M of the small end of the tapered hole section is smaller than the diameter D of the positioning ball 3.

[0032] Preferably, the tailstock 12 and the connector 13 are both detachably connected and fixed to the spindle 11.

[0033] In one specific embodiment, the mandrel 11 in this embodiment is provided with a threaded hole 112 on the left end face, and the tailstock 12 includes a first connecting part 121 connected to the threaded hole 112. The outer cylindrical surface of the first connecting part 121 is provided with an external thread that mates with the threaded hole 112.

[0034] In one specific embodiment, the end of the connector 13 facing the spindle 11 is inserted into the second inner hole 111 and is connected and fixed to the spindle 11 by a threaded connection.

[0035] Furthermore, the driving cone surface 2311 presses against the positioning ball 3 from the outside (with the side closest to the middle of the conductive body 1 as the inside), and the first elastic member 4 is used to prevent the driving slide rod 2 from moving towards the connector 13. The end of the driving slide rod 2 facing the bottom surface of the second inner hole 111 (according to...) Figure 1 (The coordinate system shown is on the left end) An adjusting screw 7 is provided, and the adjusting screw 7 abuts against the bottom surface of the second inner hole 111. By providing the adjusting screw 7, the protrusion degree of the positioning ball 3 can be adjusted, thereby adjusting the force required when the power test connector is inserted into the power cord lug 93, and avoiding the situation where the required insertion and removal force is too large and damages the power cord lug 93.

[0036] As one specific implementation method, such as Figure 8As shown, in this embodiment, the drive slide 2 sequentially includes a first shaft segment 21, a second shaft segment 22, and a third shaft segment 23 along the direction close to the connector 13. The diameters of the first shaft segment 21 and the third shaft segment 23 are both larger than the diameter of the second shaft segment 22. A first stepped surface 24 is formed between the first shaft segment 21 and the second shaft segment 22. The diameter of the third shaft segment 23 is equal to the diameter of the first inner hole 131 and forms a guiding fit with the first inner hole 131 of the connector 13. The first elastic element 4 is a spring sleeved on the drive slide 2. One end of the spring abuts against the first stepped surface 24, and the other end of the spring abuts against the end face of the connector 13. A groove 231 is provided on the third shaft segment 23, and the drive slide 2 and the connector 13 together form an annular cavity for accommodating the positioning ball 3. The groove 231 includes a first conical part, a cylindrical part and a second conical part in sequence along the direction close to the second shaft segment 22, and the conical side surface of the first conical part is the driving conical surface 2311.

[0037] As one specific implementation method, such as Figure 5 As shown, in this embodiment, the outer surface of the connector 13 is stepped and shaft-shaped, and sequentially includes a fourth shaft segment 132, a fifth shaft segment 133, and a sixth shaft segment 134 along the direction close to the tailstock 12, with the diameters of the fourth shaft segment 132, the fifth shaft segment 133, and the sixth shaft segment 134 decreasing sequentially. An external thread is provided on the outer cylindrical surface of the sixth shaft segment 134, and the right end of the second inner hole 111 (according to...) Figure 1 The coordinate system shown has an internal thread that mates with the external thread on the sixth shaft segment 134. The second step surface 135 between the fifth shaft segment 133 and the sixth shaft segment 134 presses against the right end face of the mandrel 11 (according to...). Figure 1 (In the coordinate system shown). The gasket 5 is sleeved on the fifth shaft segment 133 and pressed against the third step surface 136 between the fourth shaft segment 132 and the fifth shaft segment 133 under the elastic action of the second elastic member 6. The limiting hole 1321 is provided on the fourth shaft segment 132.

[0038] Furthermore, such as Figure 2 and Figure 10 As shown, the second elastic element 6 is a wave spring sheet sleeved on the fifth shaft segment 133 of the connector 13, and one side of the wave spring sheet abuts against the right end face of the spindle 11, and the other side of the wave spring sheet abuts against the third step surface 136 between the fourth shaft segment 132 and the fifth shaft segment 133.

[0039] Furthermore, to facilitate the connection and disassembly of the mandrel 11 and the connector 13, such as Figure 5 and Figure 6As shown, the connecting head 13 is provided with a first flat mouth 1322 which cooperates with a wrench or the like tool, and the mandrel 11 is provided with a second flat mouth 1131 which cooperates with a wrench or the like tool.

[0040] As a specific embodiment, the first flat mouth 1322 is located at one end of the connecting head 13 which is away from the tail seat 12 (according to the coordinate system shown, the right end of the connecting head 13). Figure 1

[0041] Further, the conductive main body 1 is externally sleeved with an insulating protective sleeve 8 made of insulating material, and the connecting end of the tail seat 12, the connecting end of the connecting head 13 and the gasket 5 are all located outside the insulating protective sleeve 8.

[0042] As a specific embodiment, the insulating protective sleeve 8 is sleeved outside the mandrel 11.

[0043] Further, in order to axially position the insulating protective sleeve 8 and avoid axial movement of the insulating protective sleeve 8 relative to the conductive main body 1, as shown in Figure 3 、 Figure 7 and Figure 9 As shown, the tail seat 12 further comprises a limiting plate 122 in a circular structure, the first connecting part 121 is arranged on the side of the limiting plate 122 which faces the mandrel 11, and the second connecting part 123 for connecting the cable 92 is arranged on the side of the limiting plate 122 which is away from the mandrel 11. The outer cylindrical surface of one end of the mandrel 11 which is away from the tail seat 12 is provided with a limiting boss 113, the internal through hole of the insulating protective sleeve 8 is in the form of a stepped hole, and sequentially comprises a first hole section and a second hole section in the direction close to the tail seat 12, and the diameter of the first hole section is greater than that of the second hole section. A fourth stepped surface 81 is formed between the first hole section and the second hole section, the limiting boss 113 is located in the first hole section, and the limiting boss 113 is pressed on the fourth stepped surface 81 between the first hole section and the second hole section. The end surface of the insulating protective sleeve 8 which faces the tail seat 12 abuts against the limiting plate 122 of the tail seat 12, and the insulating protective sleeve 8 is limited between the limiting plate 122 of the tail seat 12 and the limiting boss 113 of the mandrel 11, thereby axially positioning the insulating protective sleeve 8 and avoiding axial movement relative to the conductive main body 1.

[0044] Further, the second flat mouth 1131 is arranged on the limiting boss 113.

[0045] As Figure 11 ​As shown, the installation of the power test connector, first, the power test connector into the elbow sheath 91, the power test connector connector 13 toward the elbow sheath 91 inside the power cord nose 93, and the power cord nose 93 with the insertion hole alignment, then the power test connector connector 13 inserted into the power cord nose 93 insertion hole. In the process of insertion, the positioning ball 3 is extruded to the inside of the connector 13 retract, and push the said drive slide rod 2 to overcome the elastic force of the spring to the connector 13 side. When the connector 13 is inserted into the insertion hole of the power cord nose 93, the positioning ball 3 has been moved through the insertion hole to the other side of the power cord nose 93, on the one hand, the positioning ball 3 is not extruded at this time, and will be pushed by the spring and the drive slide rod 2 again to the outside of the connector 13 to form a limit, to avoid the connector 13 from the insertion hole of the power cord nose 93 out; on the other hand, the said gasket 5 will be pressed on the power cord nose 93 under the action of the wave spring, so as to realize reliable contact.

[0046] When the need to remove the said power test connector, only need to pull the cable 92 or tailstock 12 outward force can, at this time the said positioning ball 3 will be extruded again to retract, the specific action process similar to the installation, here will not be too much repetition.

[0047] The skilled in the art on the basis of the examples provided in the present application, through the means of combining, splitting, recombination of the examples of the present application, and other embodiments obtained without exceeding the scope of the present application.

[0048] The above specific embodiments, the purpose of the present application, technical solutions and beneficial effects of the examples have been described in detail, the above is only a specific embodiment of the present application, and does not limit the scope of the present application, that is, on the basis of the examples of the present application, any modification, equivalent replacement, improvement, etc. should be included in the scope of protection of the present application.

Claims

1. A power test connector that is easy to assemble and disassemble, comprising a conductive body (1), characterized in that: The conductive body (1) is provided with a guide hole, and a drive slide rod (2) is slidably disposed in the guide hole. One end of the conductive body (1) is provided with a plurality of limiting holes (1321), and a positioning ball (3) is provided in the limiting holes (1321). A first elastic element (4) is provided between the drive slide rod (2) and the guide body, and the drive cone surface (2311) on the drive slide rod (2) is pressed against the positioning ball (3) under the elastic force of the first elastic element (4); A pad (5) made of conductive material is sleeved on the conductive body (1) inside the positioning ball (3), and a second elastic element (6) is provided between the pad (5) and the conductive body (1) to prevent the pad (5) from moving inward. An insulating protective sleeve (8) is fitted over the middle part of the conductive body (1).

2. The conveniently assembled and disassembled power test connector according to claim 1, characterized in that: The conductive body (1) includes a spindle (11), one end of which is provided with a tailstock (12), and the other end of which is provided with a connector (13).

3. The conveniently assembled and disassembled power test connector according to claim 2, characterized in that: The tailstock (12) is detachably connected and fixed to the spindle (11).

4. The conveniently assembled and disassembled power test connector according to claim 2, characterized in that: The connector (13) is detachably connected and fixed to the spindle (11).

5. The conveniently assembled and disassembled power test connector according to claim 4, characterized in that: The connector (13) has a first inner hole (131) and the spindle (11) has a second inner hole (111). The first inner hole (131) and the second inner hole (111) together form the guide hole. One end of the connector (13) facing the spindle (11) is inserted into the second inner hole (111) and is connected and fixed to the spindle (11) by means of threaded connection.

6. The conveniently assembled and disassembled power test connector according to claim 5, characterized in that: The connector (13) is provided with a first flat opening (1322), and the spindle (11) shown is provided with a second flat opening (1131).

7. The conveniently assembled and disassembled power test connector according to claim 6, characterized in that: The insulating protective sleeve (8) is sleeved on the outside of the mandrel (11). A limiting boss (113) is provided at one end of the mandrel (11) facing away from the tailstock (12). The insulating protective sleeve (8) is restricted between the tailstock (12) and the limiting boss (113). The second flat opening (1131) is provided on the limiting boss (113).

8. The conveniently assembled and disassembled power test connector according to claim 2, characterized in that: The driving cone surface (2311) presses the positioning ball (3) from the outside, the first elastic element (4) is used to prevent the driving slide rod (2) from moving towards the connector (13), and an adjusting screw (7) is provided at the end of the driving slide rod (2) facing the tailstock (12).

9. The conveniently assembled and disassembled power test connector according to claim 1, characterized in that: The second elastic element (6) is a wave spring sheet sleeved on the conductive body (1).

10. A power test connector that is easy to assemble and disassemble according to claim 1, characterized in that: The diameter of the outer opening of the limiting hole (1321) is smaller than the diameter of the positioning ball (3).

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