Electric power communication dumb resource acquisition device
By designing a dumb resource acquisition device for power communications and monitoring the stability of cable connections with detectors, the problems of large workload and low emergency repair efficiency of power communications system are solved, and the effect of rapid positioning of faults and improving emergency repair efficiency is achieved.
Patent Information
- Application Number
- CN202520817221.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2035-04-27
AI Technical Summary
When a power communication system fails, maintenance personnel need to conduct on-site inspections, resulting in large workload and low emergency repair efficiency.
Design a power communication dumb resource acquisition device, including protective sleeves, detectors, males and females, to monitor the stability of cable connections through the detectors to help quickly locate the fault location and cause.
This device can detect the stability of cable connections, help eliminate irrelevant factors, quickly determine the location and cause of the fault, reduce the on-site troubleshooting workload, and improve emergency repair efficiency.
Smart Images
Figure CN222966445U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dumb resource acquisition, and more specifically, to a power communication dumb resource acquisition device. Background Art
[0002] The current power communication network is based on an optical fiber communication platform. The power communication network has a mesh architecture, is affected by many external factors, has a high operation and maintenance difficulty, and its scale increases year by year, making the operation and maintenance difficulty greater and greater. The power communication resources carry relay protection, dispatching automation, security control, etc. Therefore, the stability of power communication is directly related to the stability of power grid operation.
[0003] Currently, if a fault occurs in a certain line of the power communication system, a maintenance prompt can be sent to maintenance personnel, but the specific fault location and cause need to be investigated by maintenance personnel on-site, which often leads to a huge on-site investigation workload and low emergency repair efficiency.
[0004] In view of this, this application is specifically proposed. Content of the Utility Model
[0005] The purpose of the utility model is to provide a power communication dumb resource acquisition device, which can collect dumb resources in the power communication system and provide guidance for the maintenance and emergency repair of the power communication system, and has positive significance for reducing the on-site fault investigation workload and improving the emergency repair efficiency.
[0006] The embodiment of the utility model is implemented as follows:
[0007] A power communication dumb resource acquisition device includes: a protective sleeve, a detector, a male head, and a female head.
[0008] The side wall of the protective sleeve has an inner cavity that extends along the axial direction of the protective sleeve. A first sliding member and a second sliding member are fitted in the inner cavity. Along the axial direction of the protective sleeve, both the first sliding member and the second sliding member are slidably fitted in the inner cavity, and an elastic member is abutted between the first sliding member and the second sliding member.
[0009] A fitting groove is formed at one end of the first sliding member close to the second sliding member. A first contact is provided on one side wall of the fitting groove, and a second contact is provided on the other side wall. One end of the second sliding member close to the first sliding member has a fitting block for fitting with the fitting groove, and the fitting block has a conductive inner core. When the fitting block is completely fitted into the fitting groove, the conductive inner core electrically conducts the first contact and the second contact. Both the first contact and the second contact are electrically connected to the detector, and the detector is used to detect whether electrical conduction exists between the first contact and the second contact.
[0010] The inner side wall of the protective sleeve is provided with a first guiding groove and a second guiding groove, and both the first guiding groove and the second guiding groove extend along the axial direction of the protective sleeve.
[0011] The first guiding groove extends from the end face of the protective sleeve close to the first sliding member to the inner cavity, and the first guiding groove communicates with the inner cavity. The second guiding groove extends from the end face of the protective sleeve close to the second sliding member to the inner cavity, and the second guiding groove also communicates with the inner cavity.
[0012] The first sliding member is fixedly connected with a first stop block, and the first stop block is slidably fitted in the first guiding groove. The second sliding member is fixedly connected with a second stop block, and the second stop block is slidably fitted in the second guiding groove.
[0013] The outer diameters of both the male head and the female head are adapted to the inner diameter of the protective sleeve. The male head can be slidably fitted with damping from the end where the first guiding groove of the protective sleeve is located into the protective sleeve, and the male head is fixedly connected with a first pushing block for slidably fitting with the first guiding groove. The female head can be slidably fitted with damping from the end where the second guiding groove of the protective sleeve is located into the protective sleeve, and the female head is fixedly connected with a second pushing block for slidably fitting with the second guiding groove.
[0014] After the male head and the female head are connected in the protective sleeve, the first pushing block pushes the first stop block, and the second pushing block pushes the second stop block, so that the fitting block is completely fitted into the fitting groove.
[0015] Further, the inner cavity extends continuously in a circumferential direction of the protective sleeve to form a ring, and both the first sliding member and the second sliding member are annular.
[0016] Further, one end of the first sliding member close to the second sliding member has a first extension section. The inner diameter of the first extension section is the same as the inner diameter of the first sliding member, and the outer diameter of the first extension section is smaller than the outer diameter of the first sliding member. The fitting groove is opened at one end of the first extension section close to the second sliding member.
[0017] One end of the second sliding member close to the first sliding member has a second extension section. The inner diameter of the second extension section is the same as the inner diameter of the second sliding member, and the outer diameter of the second extension section is smaller than the outer diameter of the second sliding member. The fitting block is opened at one end of the second extension section close to the first sliding member.
[0018] The elastic member is sleeved on the first extension section and the second extension section.
[0019] Further, the inner cavity is located in the middle of the protective sleeve.
[0020] Further, along the axial direction of the protective sleeve, the length of the inner cavity is less than or equal to one half of the length of the protective sleeve.
[0021] Further, along the axial direction of the protective sleeve, both the first guiding groove and the second guiding groove extend beyond the middle of the inner cavity.
[0022] The beneficial effects of the technical solution of the embodiment of the present utility model include:
[0023] During the use of the power communication dumb resource acquisition device provided by the embodiment of the present utility model, when the male head and the female head are docked within the protective sleeve, the matching block is just completely fitted into the matching groove, that is, the detector can just detect that the first contact and the second contact are electrically connected.
[0024] Through the above design, on the basis of realizing the cable connection, the power communication dumb resource acquisition device can monitor the connection stability through the detector. When the power communication system detects a fault in a certain line, it can judge whether the cable connection is loose according to the detector at the corresponding position of the power communication dumb resource acquisition device, so as to help eliminate irrelevant factors and contribute to more quickly determining the fault location and cause.
[0025] In this way, the power communication dumb resource acquisition device realizes the auxiliary function of fault location for fault troubleshooting by collecting the dumb resources of the wiring, so as to facilitate the maintenance personnel to quickly complete the fault handling.
[0026] Generally speaking, the power communication dumb resource acquisition device provided by the embodiment of the present utility model can collect the dumb resources in the power communication system, provide guidance for the maintenance and emergency repair of the power communication system, and has positive significance for reducing the workload of on-site fault troubleshooting and improving the emergency repair efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.
[0028] Figure 1 It is a schematic structural diagram of the protective sleeve of the power communication dumb resource acquisition device provided by the embodiment of the present utility model;
[0029] Figure 2 It is a schematic diagram of the cooperation of the first sliding member, the second sliding member and the elastic member of the power communication dumb resource acquisition device provided by the embodiment of the present utility model;
[0030] Figure 3 It is a schematic diagram of the cooperation relationship between the first sliding member and the second sliding member;
[0031] Figure 4 It is a schematic structural diagram of the male head of the power communication dumb resource acquisition device provided by the embodiment of the present utility model;
[0032] Figure 5Schematic diagram of the female head of the power communication dumb resource acquisition device provided by the embodiment of the present utility model;
[0033] Figure 6 Schematic diagram when the male head and the female head are docked within the protective sleeve.
[0034] Explanation of reference numerals:
[0035] Protective sleeve 100; inner cavity 110; first guiding groove 120; second guiding groove 130; first sliding member 200; mating groove 210; first stop block 220; first extension section 230; first electrical connection channel 240; second electrical connection channel 250; second sliding member 300; mating block 310; conductive inner core 320; second stop block 330; second extension section 340; elastic member 400; male head 500; first push block 510; female head 600; second push block 610. Detailed implementation manners
[0036] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.
[0037] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.
[0038] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0039] The terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.
[0040] In addition, terms such as "parallel" and "perpendicular" do not mean that the components are required to be absolutely parallel or perpendicular, but can be slightly inclined. For example, "parallel" only means that its direction is more parallel relative to "perpendicular", and does not mean that the structure must be completely parallel, but can be slightly inclined.
[0041] In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and defined, the terms "arrangement", "installation", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0042] In order to overcome the deficiencies in the prior art, please refer to Figures 1 - 6 , this embodiment provides a power communication dumb resource acquisition device for helping to acquire the dumb resources in the power communication system. It should be noted that the power communication dumb resource acquisition device of this application is aimed at the dumb resources of wiring (such as: line connection).
[0043] The power communication dumb resource acquisition device includes: a protective sleeve 100, a detector (not shown in the figure), a male head 500, and a female head 600.
[0044] The protective sleeve 100 is cylindrical. The side wall of the protective sleeve 100 has an inner cavity 110. The inner cavity 110 extends continuously in a circular shape along the circumferential direction of the protective sleeve 100, and the inner cavity 110 extends along the axial direction of the protective sleeve 100. Among them, the inner cavity 110 is also cylindrical as a whole, and the inner cavity 110 and the protective sleeve 100 are coaxially arranged.
[0045] In this embodiment, in the length direction of the protective sleeve 100, the inner cavity 110 is located in the middle of the protective sleeve 100.
[0046] A first sliding member 200 and a second sliding member 300 are fitted in the inner cavity 110. Along the axial direction of the protective sleeve 100, both the first sliding member 200 and the second sliding member 300 are slidably fitted in the inner cavity 110. Both the first sliding member 200 and the second sliding member 300 are annular, and both the first sliding member 200 and the second sliding member 300 are coaxially arranged with the protective sleeve 100.
[0047] An elastic member 400 is abutted between the first sliding member 200 and the second sliding member 300. In the natural state, under the elastic force of the elastic member 400, the first sliding member 200 and the second sliding member 300 are away from each other, and the first sliding member 200 and the second sliding member 300 respectively fit against the two end walls of the inner cavity 110.
[0048] A fitting groove 210 is provided at one end of the first sliding member 200 close to the second sliding member 300.
[0049] A first contact point (not shown in the figure) is provided on one side wall of the fitting groove 210, and a second contact point (not shown in the figure) is provided on the other side wall. Both the first contact point and the second contact point are made of conductive materials.
[0050] The second sliding member 300 has a matching block 310 at one end close to the first sliding member 200 for matching with the matching groove 210 . The matching block 310 has a conductive inner core 320 .
[0051] When the mating block 310 is fully mated to the mating slot 210, the conductive inner core 320 electrically connects the first contact and the second contact. When the mating block 310 is not fully mated to the mating slot 210, the conductive inner core 320 is offset from the first contact and the second contact, and the first contact and the second contact are disconnected.
[0052] Both the first contact and the second contact are electrically connected to the detector. Specifically, the first contact is electrically connected to the detector through the first electrical connection channel 240 , and the second contact is electrically connected to the detector through the second electrical connection channel 250 .
[0053] The detector is used to detect whether there is electrical conduction between the first contact and the second contact. That is, the detector can be used to detect whether there is electrical conduction between the first contact and the second contact to indirectly determine whether the mating block 310 is completely mated into the mating slot 210 .
[0054] The inner side wall of the protective sleeve 100 is provided with a first guiding groove 120 and a second guiding groove 130 . Both the first guiding groove 120 and the second guiding groove 130 are extended along the axial direction of the protective sleeve 100 .
[0055] The first guide groove 120 and the second guide groove 130 are respectively opened at two ends of the protective cover 100 .
[0056] The first guide groove 120 extends from an end surface of the protective sleeve 100 close to the first sliding member 200 to the inner cavity 110 , and in the axial direction of the protective sleeve 100 , the first guide groove 120 extends to the position of the inner cavity 110 and extends beyond the middle of the inner cavity 110 .
[0057] The second guide groove 130 extends from an end surface of the protective sleeve 100 close to the second sliding member 300 to the inner cavity 110 , and in the axial direction of the protective sleeve 100 , the second guide groove 130 extends to the position of the inner cavity 110 and extends beyond the middle of the inner cavity 110 .
[0058] For the first guide groove 120, the portion where the first guide groove 120 overlaps with the inner cavity 110, such as Figure 1 As shown in the middle area X, the portion corresponding to the area X is connected to the inner cavity 110 , that is, the first guide groove 120 directly penetrates into the inner cavity 110 , and the groove cavity of the portion of the first guide groove 120 corresponding to the area X is connected to the inner cavity 110 .
[0059] The relationship between the second guiding groove 130 and the inner cavity 110 is the same as that of the first guiding groove 120. Similarly, for the second guiding groove 130, the part of the second guiding groove 130 that coincides with the inner cavity 110 is also connected to the inner cavity 110, that is, the second guiding groove 130 directly penetrates into the inner cavity 110, and the cavity of the part of the second guiding groove 130 that coincides with the inner cavity 110 is also connected to the inner cavity 110.
[0060] A first stopper 220 is fixedly connected to the inner ring wall of the first sliding member 200, and the first stopper 220 is slidably engaged in the first guiding groove 120. A second stopper 330 is fixedly connected to the inner ring wall of the second sliding member 300, and the second stopper 330 is slidably engaged in the second guiding groove 130.
[0061] The outer diameters of both the male head 500 and the female head 600 are adapted to the inner diameter of the protective sleeve 100.
[0062] The male head 500 can be slidably and dampedly fitted into the protective sleeve 100 from the end where the first guiding groove 120 of the protective sleeve 100 is located, and the male head 500 is fixedly connected with a first pushing block 510 for slidably engaging with the first guiding groove 120. When the male head 500 slides inward from the end of the protective sleeve 100, the first pushing block 510 can slide along the first guiding groove 120, and the first pushing block 510 gradually approaches the first stopper 220. After the first pushing block 510 fits with the first stopper 220, when the male head 500 continues to slide into the protective sleeve 100, the first pushing block 510 can push the first stopper 220, so that the first sliding member 200 approaches the second sliding member 300.
[0063] The female head 600 can be slidably and dampedly fitted into the protective sleeve 100 from the end where the second guiding groove 130 of the protective sleeve 100 is located, and the female head 600 is fixedly connected with a second pushing block 610 for slidably engaging with the second guiding groove 130. When the female head 600 slides inward from the end of the protective sleeve 100, the second pushing block 610 can slide along the second guiding groove 130, and the second pushing block 610 gradually approaches the second stopper 330. After the second pushing block 610 fits with the second stopper 330, when the female head 600 continues to slide into the protective sleeve 100, the second pushing block 610 can push the second stopper 330, so that the second sliding member 300 approaches the first sliding member 200.
[0064] The male head 500 and the female head 600 are respectively used to connect two cables that need to be docked. When the male head 500 and the female head 600 are mated, the connection of the corresponding two cables is realized.
[0065] It should be noted that the elastic force provided by the elastic member 400 is greater than the resistance received by the mating block 310 when the mating block 310 is fitted into the mating groove 210. In addition, the sliding resistance between the male connector 500 and the protective sleeve 100, and the sliding resistance between the female connector 600 and the protective sleeve 100 are both greater than the elastic force provided by the elastic member 400.
[0066] As an example (not limited to this), when connecting the male connector 500 and the female connector 600, the male connector 500 can be first inserted from the end where the first guiding groove 120 of the protective sleeve 100 is located. When the male connector 500 moves to approximately the middle position of the protective sleeve 100, the female connector 600 can be inserted from the other end (i.e., the end where the second guiding groove 130 is located), and the female connector 600 and the male connector 500 are docked within the protective sleeve 100.
[0067] Among them, when the male connector 500 and the female connector 600 are connected within the protective sleeve 100, since the first pushing block 510 pushes the first blocking block 220, the second pushing block 610 pushes the second blocking block 330, the first sliding member 200 and the second sliding member 300 approach each other, and the mating block 310 is completely fitted into the mating groove 210.
[0068] When the male connector 500 and the female connector 600 are not properly matched (or become loose during use), under the action of the elastic member 400, the first sliding member 200 and the second sliding member 300 will not approach sufficiently, and the mating block 310 cannot be completely fitted into the mating groove 210, and the detector will detect that the first contact and the second contact are in an open state.
[0069] That is to say, when the male connector 500 and the female connector 600 are docked within the protective sleeve 100, the mating block 310 is just completely fitted into the mating groove 210, that is, the detector can just detect that the first contact and the second contact are electrically conductive.
[0070] Through the above design, on the basis of realizing the connection of the cable, the power communication dumb resource acquisition device can monitor the connection stability through the detector. When the power communication system detects a fault in a certain line, it can judge whether the cable connection is loose according to the detector at the corresponding position of the power communication dumb resource acquisition device, so as to help eliminate irrelevant factors and contribute to more quickly determining the fault location and cause.
[0071] In this way, the power communication dumb resource acquisition device realizes the auxiliary function of fault location for fault troubleshooting by collecting the dumb resources of the wiring, so as to facilitate the maintenance personnel to quickly complete the fault handling.
[0072] Generally speaking, the power communication dumb resource acquisition device provided in this embodiment can collect the dumb resources in the power communication system, provide guidance for the maintenance and emergency repair of the power communication system, and has positive significance for reducing the workload of on-site fault troubleshooting and improving the emergency repair efficiency.
[0073] In this embodiment, the protective sleeve 100 can not only protect the male head 500 and the female head 600, but also prevent dust from entering the gap between the male head 500 and the female head 600. In addition, it helps to maintain the connection stability between the male head 500 and the female head 600. On the basis of the above functions, it also additionally takes into account the continuous monitoring of the connection stability (whether there is looseness) between the male head 500 and the female head 600.
[0074] Since both the first guiding groove 120 and the second guiding groove 130 extend beyond the middle of the inner cavity 110, when installing the male head 500 and the female head 600 into the protective sleeve 100, the requirement for installation accuracy can be effectively reduced, facilitating quick docking.
[0075] Optionally, along the axial direction of the protective sleeve 100, the length of the inner cavity 110 is less than or equal to half of the length of the protective sleeve 100. In this way, it can be ensured that both the male head 500 and the female head 600 have sufficient length to enter the protective sleeve 100, ensuring the docking strength.
[0076] Furthermore, one end of the first sliding member 200 close to the second sliding member 300 has a first extension section 230. The inner diameter of the first extension section 230 is the same as that of the first sliding member 200, and the outer diameter of the first extension section 230 is smaller than that of the first sliding member 200. The fitting groove 210 is opened at one end of the first extension section 230 close to the second sliding member 300.
[0077] One end of the second sliding member 300 close to the first sliding member 200 has a second extension section 340. The inner diameter of the second extension section 340 is the same as that of the second sliding member 300, and the outer diameter of the second extension section 340 is smaller than that of the second sliding member 300. The fitting block 310 is opened at one end of the second extension section 340 close to the first sliding member 200.
[0078] The elastic member 400 is sleeved on the first extension section 230 and the second extension section 340.
[0079] Through this design, when the fitting block 310 is completely fitted into the fitting groove 210, the first extension section 230 and the second extension section 340 are in contact with each other. At this time, there is still a gap between the first sliding member 200 and the second sliding member 300, which can make way for the elastic member 400 and prevent the elastic member 400 from being overcompressed and losing its elasticity.
[0080] In summary, the power communication dumb resource acquisition device provided by the embodiments of the present utility model can collect dumb resources in the power communication system, provide guidance for the maintenance and emergency repair of the power communication system, and has positive significance for reducing the workload of on-site fault troubleshooting and improving the emergency repair efficiency.
[0081] The foregoing are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A power communication dumb resource acquisition device, characterized in that: include: Protective sleeve, detector, male and female connectors; The side wall of the protective sleeve has an inner cavity, and the inner cavity extends along the axial direction of the protective sleeve; A first sliding member and a second sliding member are matched in the inner cavity. Along the axial direction of the protective sleeve, the first sliding member and the second sliding member are both slidably matched in the inner cavity, and an elastic member is abutted between the first sliding member and the second sliding member. A matching groove is provided at one end of the first sliding member close to the second sliding member; a first contact is provided on one side of the matching groove, and a second contact is provided on the other side of the matching groove; a matching block for matching with the matching groove is provided at one end of the second sliding member close to the first sliding member, and the matching block has a conductive inner core; when the matching block is fully matched into the matching groove, the conductive inner core electrically connects the first contact and the second contact; the first contact and the second contact are both electrically connected to the detector, and the detector is used to detect whether the first contact and the second contact are electrically connected; The inner side wall of the protective sleeve is provided with a first guide groove and a second guide groove, and the first guide groove and the second guide groove are both extended along the axial direction of the protective sleeve; The first guide groove extends from an end surface of the protective cover close to the first sliding member to the inner cavity, and the first guide groove is connected to the inner cavity; the second guide groove extends from an end surface of the protective cover close to the second sliding member to the inner cavity, and the second guide groove is also connected to the inner cavity; The first sliding member is fixedly connected with a first stopper, and the first stopper can be slidably matched in the first guide groove; the second sliding member is fixedly connected with a second stopper, and the second stopper can be slidably matched in the second guide groove; The outer diameters of the male head and the female head are adapted to the inner diameter of the protective sleeve; the male head can be slidably fitted into the protective sleeve with damping at one end of the protective sleeve where the first guide groove is located, and the male head is fixedly connected with a first push block for slidably fitting with the first guide groove; the female head can be slidably fitted into the protective sleeve with damping at one end of the protective sleeve where the second guide groove is located, and the female head is fixedly connected with a second push block for slidably fitting with the second guide groove; When the male connector and the female connector are connected in the protective sleeve, the first pushing block pushes the first stop block, and the second pushing block pushes the second stop block, so that the matching block is completely matched with the matching groove.
2. The power communication dumb resource acquisition device according to claim 1, characterized in that: The inner cavity continuously extends in a ring shape along the circumference of the protective sleeve, and the first sliding member and the second sliding member are both ring-shaped.
3. The power communication dumb resource acquisition device according to claim 2, characterized in that: The first sliding member has a first extension section at one end close to the second sliding member, the inner diameter of the first extension section is the same as the inner diameter of the first sliding member, the outer diameter of the first extension section is smaller than the outer diameter of the first sliding member, and the matching groove is provided at one end of the first extension section close to the second sliding member; The second sliding member has a second extension section at one end close to the first sliding member, the inner diameter of the second extension section is the same as the inner diameter of the second sliding member, the outer diameter of the second extension section is smaller than the outer diameter of the second sliding member, and the matching block is provided at one end of the second extension section close to the first sliding member; The elastic member is sleeved on the first extension section and the second extension section.
4. The power communication dumb resource acquisition device according to claim 1, characterized in that: The inner cavity is located in the middle of the protective sleeve.
5. The power communication dumb resource acquisition device according to claim 1, characterized in that: Along the axial direction of the protective sleeve, the length of the inner cavity is less than or equal to half of the length of the protective sleeve.
6. The power communication dumb resource acquisition device according to claim 1, characterized in that: Along the axial direction of the protective sleeve, the first guide groove and the second guide groove both extend beyond the middle portion of the inner cavity.