Intelligent distribution box line detection device and use method

Abstract

The invention relates to the field of distribution box detection, in particular to an intelligent distribution box line detection device and a use method thereof, after detection operation is completed, when an operator pulls out a plug, a non-axial included angle is easily formed between an outer sheath of the plug and a wiring terminal due to poor operation habits or non-standard operation, and the plug is not damaged. And the plug is not stably pulled out along the axis direction of the plug. And the long-term operation is easy to cause local wear of the outer sheath of the plug, even cause structural damage, and influence the connection reliability and the service life of equipment. Through the arrangement of the sensing limiting plug-in, the problems of plug head abrasion, wiring terminal deformation, poor electrical contact and the like caused by non-axial plugging operation can be effectively prevented, the service life of the plug head is remarkably prolonged, the safety and reliability of the detection process are improved, the plugging action of an operator is forcibly standardized, and the detection efficiency is improved. And correct operation habits can be developed, and damage to the plug caused by misoperation can be avoided from the source.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of distribution box detection, in particular to an intelligent distribution box line detection device and a use method thereof. BACKGROUND

[0002] The distribution box line detection device is a key equipment for monitoring and protecting the circuit of the distribution box, and plays an important role in improving the safety, reliability and energy efficiency of the circuit operation, and has become an indispensable part of the modern power system.

[0003] The distribution box can reasonably distribute electric energy and facilitate the opening and closing control of the circuit, so its reliability is directly related to the safety of electricity. Generally, the distribution box integrates switching devices, measuring instruments, protective appliances and related auxiliary devices in a closed or semi-closed metal cabinet to form a complete distribution device.

[0004] The following problems in the prior art have not been well solved: the distribution box is electrically connected with the corresponding line connection terminal on the box body through a plug-in head, after the detection operation is completed, the operator pulls out the plug-in head, due to bad operation habit or non-standard operation, a non-axial angle is easily formed between the outer sheath of the plug-in head and the connection terminal, instead of being smoothly pulled out along the plug-in head axis direction. Long-term use may cause local wear of the outer sheath of the plug-in head, and even cause structural damage, affecting the connection reliability and service life of the equipment. SUMMARY

[0005] The present application aims to provide an intelligent distribution box line detection device and a use method to solve the problems in the background art. To achieve the above-mentioned purpose, the present application provides the following technical scheme: an intelligent distribution box line detection device, comprising a distribution box body arranged in the interior of a distribution box cabinet, an installation base is fixedly installed at the line connection position of the distribution box body, a sensing limiting insert for sensing the insertion state of the plug-in head is movably arranged in the installation base, and the plug-in head is inserted into the interior of the distribution box body under the guidance of the sensing limiting insert during detection to realize the detection function of the line. An axial locking member for axial locking of the inserted plug-in head is arranged on the inner wall of the installation base, after the plug-in head is inserted, the metal material connection terminal part of the plug-in head is opposite to and contacts the axial locking member, and the outer sheath made of insulating plastic material wrapped outside the connection terminal is accommodated in the sensing limiting insert, the sensing limiting insert drives the axial locking member to move by sensing the deflection angle of the outer sheath of the plug-in head during pulling out, so that the plug-in head can be smoothly pulled out only when the plug-in head and the line connection position are coaxially aligned.

[0006] Preferably, the mounting base comprises a spherical table and a vertical sleeve, the sensing limiting insert is movably arranged in the spherical table, and the axial locking member is arranged on the inner wall of the vertical sleeve.

[0007] Preferably, the sensing limiting insert comprises a spherical cage arranged in the spherical cavity, a plurality of movable balls are uniformly embedded on the circumferential outer wall of the spherical cage, and a spherical limiting table is further arranged in the spherical cage.

[0008] Preferably, a plurality of supporting members are arranged between the bottom of the limiting table and the spherical cage, for driving the axis of the limiting table to always be coaxially aligned with the axis of the vertical sleeve.

[0009] Preferably, each supporting member comprises a touch rod, one end of the touch rod is embedded in the bottom of the limiting table through a first fixed ball, a second fixed ball is further fixed on the touch rod, the second fixed ball is embedded in the bottom of the spherical cage, an axial sliding groove is correspondingly arranged on the inner wall of the vertical sleeve, one end of the touch rod away from the limiting table extends into the axial sliding groove, a connecting spring is sleeved on the touch rod, and two ends of the connecting spring are respectively abutted against the touch rod and the end portion of the axial sliding groove.

[0010] Preferably, the axial locking member comprises an annular clamping seat fixed on the inner wall of the vertical sleeve, an annular groove is arranged in the annular clamping seat, and an annular balloon is arranged in the annular groove.

[0011] Preferably, the axial locking member comprises an annular clamping seat fixed on the inner wall of the vertical sleeve, an annular groove is arranged in the annular clamping seat, and an annular balloon is arranged in the annular groove.

[0012] Preferably, the use method of the line detection device of the intelligent distribution box comprises the following steps: S1: Insert the plug into the limiting platform of the sensing and limiting plug along the axis. The limiting platform automatically centers under the action of the supporting component, guiding the wiring terminals of the plug to smoothly connect with the line connection point. S2: When the plug is pulled out, if the direction of the pulling force is deviated, the outer sheath of the plug will cause the limiting platform to deflect. This deflection drives the axial locking component to move through the touch rod of the support component, generating a radial locking force on the terminal block to prevent it from being pulled out. S3: Adjust the direction of the pull-out force to be coaxial with the insertion axis. The limit platform resets under the elastic restoring force of the support component. The touch lever releases the pressure on the axial locking component, the locking force is released, and the plug head is pulled out smoothly.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, by setting the sensing limit plug, problems such as wear of the plug head, deformation of the terminal block and poor electrical contact caused by non-axial plugging and unplugging operations can be effectively prevented. This not only significantly extends the service life of the plug head and improves the safety and reliability of the detection process, but also forces and standardizes the plugging and unplugging actions of operators, which helps to develop correct operating habits and avoid damage to the plug head caused by improper operation from the root.

[0014] In this invention, when the operator pulls out the connector non-axially, the deflection of the limiting platform will cause the touch rod to squeeze the annular balloon. After the annular balloon deforms, it applies a radial locking force to the terminal block, which firmly restricts it and prevents the connector from being pulled out. Only when the operator adjusts the direction of the force to restore the outer sheath and the terminal block to an axially aligned state can the pressure of the touch rod on the annular balloon be released, and the lock is released so that the connector can be successfully removed.

[0015] In this invention, when the plug is inserted, its outer wall contacts and rolls with the ball. Under the buffering effect of the ring spring, the plug can be smoothly inserted into the wiring connection. When locking is required, the pressing plate slides axially, and the rolling friction between the ball and the outer wall of the terminal is converted into static friction to achieve effective locking. This ensures that the frictional resistance of the plug is small during insertion, and that a strong locking force can be quickly generated when it is abnormally pulled out. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the insertion of the plug into the electrical box body structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the mounting base and sensing limiting plug of the present invention; Figure 3 This is a cross-sectional view of the mounting base in this invention; Figure 4 This is a plan view of the sensing and limiting plug-in in this invention; Figure 5This is an unfolded diagram of the sensing and limiting plug-in in this invention; Figure 6 This is a three-dimensional structural diagram of the sensing and limiting plug and the supporting component in this invention; Figure 7 This is a three-dimensional structural diagram of the axial locking component in this invention; Figure 8 This is a three-dimensional structural diagram of the axial locking component in the second embodiment of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the connector in this invention.

[0017] In the diagram: 1. Electrical box body; 11. Mounting base; 12. Spherical platform; 121. Spherical cavity; 13. Vertical sleeve; 131. Axial groove; 2. Plug-in head; 21. Outer sheath; 22. Terminal block; 3. Sensing limit plug; 31. Ball cage; 32. Ball; 33. Limiting platform; 34. Annular guide groove; 35. Socket; 4. Support component; 41. Touch lever; 42. First fixed ball; 43. Second fixed ball; 44. Connecting spring; 5. Axial locking component; 51. Annular seat; 52. Annular groove; 53. Annular bladder; 54. Annular spring; 541. Extrusion plate; 542. Ball; 543. Wedge-shaped surface. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please see Figures 1 to 9 The present invention provides a technical solution: an intelligent distribution box line detection device, including a box body 1 disposed inside the distribution box cabinet, a mounting base 11 fixedly installed at the line connection of the box body 1, and a sensing limit plug 3 for sensing the insertion state of the plug 2 is movably installed inside the mounting base 11. During detection, the plug 2 is inserted into the box body 1 through the guidance of the sensing limit plug 3 to realize the line detection function.

[0020] The inner wall of the mounting base 11 is provided with an axial locking member 5 for axially locking the inserted plug 2. After the plug 2 is inserted, its metal terminal 22 part faces and contacts the axial locking member 5, while the outer sheath 21 made of insulating plastic material covering the terminal 22 is accommodated in the sensing and limiting plug 3. The sensing and limiting plug 3 drives the axial locking member 5 to move accordingly by sensing the deflection angle generated by the outer sheath 21 in the plug 2 during the pulling process, so that the plug 2 can be pulled out smoothly only when it is coaxially aligned with the wire connection.

[0021] In this embodiment, the mounting base 11 includes a spherical platform 12 and a vertical sleeve 13. The sensing and limiting plug 3 is movably disposed inside the spherical platform 12, and the axial locking member 5 is disposed on the inner wall of the vertical sleeve 13. The inner wall of the spherical platform 12 is provided with a spherical cavity 121. The sensing and limiting plug-in 3 includes a ball cage 31 placed in a spherical cavity 121. A number of movable balls 32 are evenly embedded on the outer circumference of the ball cage 31. The ball cage 31 also has a spherical limiting platform 33 inside. The opposite sides of the balls 32 abut against the inner wall of the spherical cavity 121 and the outer surface of the limiting platform 33, respectively. The spherical cavity 121 and the limiting platform 33 are respectively provided with annular guide grooves 34 for the balls 32 to roll. The limiting platform 33 has a plug hole 35 at its axis. The plug head 2 can pass through the plug hole 35 and move towards the vertical sleeve 13 to achieve electrical connection with the wiring connection point. Through the cooperation of the ball cage 31 and the ball bearing 32, the limiting stage 33 can achieve free deflection within the ball cage 31, which not only provides a centering guide function for the insertion of the plug 2, but also ensures that it can smoothly connect with the line connection. The ball bearing 32 effectively reduces the frictional resistance during the deflection process and improves the sensitivity of the deflection of the limiting stage 33.

[0022] In this embodiment, a plurality of support components 4 are provided between the bottom of the limiting platform 33 and the ball cage 31 to drive the axis of the limiting platform 33 to always be coaxially aligned with the axis of the vertical sleeve 13. The plurality of support components 4 are evenly arranged around the bottom of the limiting platform 33. Each support component 4 includes a touch rod 41. One end of the touch rod 41 is embedded in the bottom of the limiting platform 33 via a first fixing ball 42. A second fixing ball 43 is also fixed on the touch rod 41 and is embedded in the bottom of the ball cage 31. The inner wall of the vertical sleeve 13 is provided with an axial groove 131. The end of the touch rod 41 away from the limiting platform 33 extends into the axial groove 131. A connecting spring 44 is sleeved on the touch rod 41. The two ends of the connecting spring 44 abut against the touch rod 41 and the end of the axial groove 131, respectively. Under the pre-tightening force of the connecting spring 44, several support components 4 work together to drive the axis of the limiting platform 33 to be aligned with the axis of the vertical sleeve 13. The end of the touch rod 41 that extends into the vertical sleeve 13 abuts against the axial locking member 5 and drives the axial locking member 5 to lock the terminal 22 of the plug head 2. The plug 2 is inserted into the socket 35 of the limiting platform 33, and its terminal 22 part enters into the vertical sleeve 13 and connects with the line connection. The outer sheath 21 of the plug 2 is accommodated in the socket 35 of the limiting platform 33. Under the action of the support component 4 and the connecting spring 44, the axis of the socket 35 of the limiting platform 33, the axis of the vertical sleeve 13 and the axis of the line connection are kept coaxial, thereby ensuring the positioning stability of the plug 2 during the detection process and avoiding the impact of gravity or external force on the connection reliability. When the operator pulls out the plug 2 after the test is completed, if the direction of the force applied to the clamping outer sleeve 21 is deflected, the outer sleeve 21 will deflect relative to the axis of the terminal 22. The deflection of the outer sleeve 21 will cause the limiting platform 33 to undergo a corresponding angular displacement in the ball cage 31. The deflection of the limiting platform 33 will cause the touch rod 41 to slide in the axial groove 131 of the vertical sleeve 13 through the first fixed ball 42 and the second fixed ball 43. The end of the touch rod 41 will then press the axial locking member 5 to lock the terminal 22 of the plug 2. At this time, the operator cannot pull out the plug 2 directly. The direction of the pulling force must be adjusted so that the outer sleeve 21 and the terminal 22 are back to coaxial alignment before the axial lock can be released and the plug 2 can be taken out smoothly. By setting the sensing limit plug 3, problems such as wear of the plug head 2, deformation of the terminal block 22 and poor electrical contact caused by non-axial plugging and unplugging operations can be effectively prevented. This not only significantly extends the service life of the plug head 2 and improves the safety and reliability of the detection process, but also forces and standardizes the plugging and unplugging actions of operators, which helps to develop correct operating habits and avoid damage to the plug head 2 caused by improper operation from the root.

[0023] In this embodiment, the axial locking member 5 includes an annular retainer 51 fixed to the inner wall of the vertical sleeve 13. An annular groove 52 is provided inside the annular retainer 51, and an annular ball 53 is provided inside the annular groove 52. The position of the annular ball 53 corresponds to the outer circumference of the terminal 22.

[0024] The touch rod 41 in the support component 4 extends into the annular groove 52 at one end of the vertical sleeve 13. When the touch rod 41 moves into the annular groove 52 driven by the limiting platform 33, its end applies radial pressure to the annular balloon 53, forcing the annular balloon 53 to deform and contract inward, thereby squeezing the outer wall of the wiring terminal 22 located inside it. When the operator pulls out the connector 2 non-axially, the deflection of the limiting platform 33 will cause the touch lever 41 to squeeze the annular balloon 53. After the annular balloon 53 deforms, it applies a radial locking force to the terminal 22, which firmly restricts it and prevents the connector 2 from being pulled out. Only when the operator adjusts the direction of the force so that the outer sheath 21 and the terminal 22 are restored to the axial alignment state can the pressure of the touch lever 41 on the annular balloon 53 be released, and the lock is released so that the connector 2 can be taken out smoothly.

[0025] Example 2: To improve the smoothness of the insertion and removal process of the connector 2 and the reliability of locking, and to reduce wear on the surface of the terminal block 22; Specifically, in Embodiment 1, the axial locking member 5 provides radial locking force through the deformation of the annular balloon 53, which has good self-adaptive wrapping properties. However, in order to maintain low friction and smooth insertion of the connector 2 in the locked state and to further improve the response speed of the locking action, a structure that combines rolling guidance and rigid wedge locking is more suitable.

[0026] Accordingly, Figure 8 As shown, the axial locking element 5 in this application has been further improved: In this embodiment, the axial locking member 5 includes an annular retainer 51 fixedly installed on the inner wall of the vertical sleeve 13. The annular retainer 51 has an annular groove 52 inside, and an annular spring 54 is provided in the annular groove 52. An axially sliding extrusion plate 541 is also provided in the annular groove 52, and its sliding direction is towards the terminal 22. A plurality of rolling balls 542 are movably embedded on the side surface of the extrusion plate 541 facing the terminal 22. The side surface of the extrusion plate 541 facing away from the terminal 22 is a wedge-shaped surface 543 that cooperates with the end of the touch rod 41. When the operator pulls out the connector 2 non-axially, the deflection of the limiting platform 33 drives the touch rod 41 to move axially. The end of the touch rod 41 squeezes the wedge surface 543, forcing the squeezing plate 541 to slide axially toward the terminal 22, thereby applying a radial locking force to its outer wall and achieving locking.

[0027] When the connector 2 is inserted, its outer wall contacts and rolls with the ball 542. Under the buffering effect of the ring spring 54, the connector 2 can be smoothly inserted into the wiring connection. When locking is required, the pressing plate 541 slides axially, and the rolling friction between the ball 542 and the outer wall of the terminal 22 is converted into static friction to achieve effective locking. This ensures that the connector 2 has low frictional resistance during insertion and can quickly generate a strong locking force when it is abnormally pulled out.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smart distribution box circuit detection device, characterized in that, include: The electrical box body (1) is installed inside the distribution box cabinet; Mounting base (11) is fixedly installed at the wiring connection point of the electrical box body (1); The sensing limit plug (3) is movably installed inside the mounting base (11) to sense the insertion status of the plug head (2); An axial locking element (5) is provided on the inner wall inside the mounting base (11) for axially locking the inserted plug head (2); The plug (2) is guided into the electrical box body (1) via the sensing limit plug (3); The sensing limit plug (3) senses the deflection angle of the outer sheath (21) of the plug (2) during the pull-out process and drives the axial locking member (5) to act accordingly, so that pull-out is allowed only when the plug (2) is coaxially aligned with the line connection.

2. The intelligent distribution box line detection device according to claim 1, characterized in that: The mounting base (11) includes: The spherical platform (12) has a spherical cavity (121) on its inner wall. A vertical sleeve (13) is fixedly connected to the bottom of the spherical platform (12); The sensing limit plug (3) is movably set in the spherical cavity (121), and the axial locking member (5) is set on the inner wall of the vertical sleeve (13).

3. The intelligent distribution box line detection device according to claim 2, characterized in that: The sensing limit plug-in (3) includes: The ball cage (31) is placed inside the spherical cavity (121); Several balls (32) are evenly embedded on the outer circumference of the ball cage (31) and movably abut against the inner wall of the spherical cavity (121); The limiting platform (33) is spherical and is located inside the ball cage (31), and its outer surface abuts against the ball (32); A socket (35) is provided at the center of the limiting platform (33) for the wire head (2) to pass through; The spherical cavity (121) and the limiting platform (33) are respectively provided with annular guide grooves (34). The ball (32) rolls in the annular guide groove (34), so that the limiting platform (33) can deflect in the ball cage (31).

4. The intelligent distribution box line detection device according to claim 3, characterized in that: Also includes: Several support components (4) are evenly arranged around the bottom of the limiting platform (33) to drive the axis of the limiting platform (33) to keep coaxially aligned with the axis of the vertical sleeve (13).

5. The intelligent distribution box line detection device according to claim 4, characterized in that: Each of the support components (4) includes: Touch stick (41); The first fixed ball (42) is located at one end of the touch lever (41) and embedded in the bottom of the limiting platform (33); The second fixed ball (43) is fixed to the touch stick (41) and embedded in the bottom of the ball cage (31); A connecting spring (44) is sleeved on the touch stick (41); The inner wall of the vertical sleeve (13) is provided with an axial groove (131). The end of the touch rod (41) away from the limiting platform (33) extends into the axial groove (131) and abuts against the axial locking member (5). The two ends of the connecting spring (44) abut against the touch rod (41) and the end of the axial groove (131) respectively to provide preload.

6. The intelligent distribution box line detection device according to claim 5, characterized in that: The axial locking element (5) includes: The annular bracket (51) is fixed to the inner wall of the vertical sleeve (13); The annular groove (52) is formed inside the annular card holder (51); An annular balloon (53) is disposed in the annular groove (52) and corresponds to the outer circumference of the wiring terminal (22) of the plug head (2); The end of the touch lever (41) extends into the annular groove (52). When the touch lever (41) is pressed, its end squeezes the annular balloon (53), causing the annular balloon (53) to deform and contract inward to lock the terminal (22).

7. The intelligent distribution box line detection device according to claim 5, characterized in that: The axial locking element (5) includes: The annular bracket (51) is fixed to the inner wall of the vertical sleeve (13); The annular groove (52) is formed inside the annular card holder (51); A ring spring (54) is disposed in a ring groove (52); The extrusion plate (541) is axially slidably disposed in the annular groove (52), and its sliding direction is directed toward the terminal (22) of the plug head (2). Several rolling balls (542) are movably embedded on the surface of the extrusion plate (541) facing the terminal (22); A wedge-shaped surface (543) is formed on the side surface of the extrusion plate (541) facing away from the terminal (22) and mates with the end of the touch stick (41); When the touch stick (41) is pressed, its end drives the extrusion plate (541) to slide axially through the wedge surface (543), so that the ball (542) applies a radial locking force to the terminal (22).

8. A method of using an intelligent distribution box line detection device, comprising using the intelligent distribution box line detection device as described in any one of claims 1-7, characterized in that, Includes the following steps: S1: Insert the plug (2) axially into the limiting platform (33) of the sensing limiting plug (3). The limiting platform (33) automatically centers under the action of the supporting component (4), guiding the wiring terminal (22) of the plug (2) to smoothly connect with the line connection. S2: When the plug (2) is pulled out, if the direction of the pulling force is deviated, the outer sheath (21) of the plug (2) will drive the limiting platform (33) to deflect. This deflection drives the axial locking member (5) to move through the touch rod (41) of the support member (4), generating a radial locking force on the terminal (22) to prevent it from being pulled out. S3: Adjust the direction of the pull-out force to be coaxial with the insertion axis. The limiting platform (33) resets under the elastic restoring force of the support component (4). The touch lever (41) releases the pressure on the axial locking component (5), the locking force is released, and the plug head (2) is pulled out smoothly.

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