Sleeve end screen signal acquisition device

Abstract

The invention relates to the technical field of bushing tap maintenance equipment, in particular to a bushing tap signal acquisition device, which comprises a mounting assembly, an adjusting assembly and a conducting strip group which are fixedly connected in sequence and then sleeved outside a bushing tap connector, the mounting assembly is used for being fixedly connected with the bushing end screen; the conducting strip group comprises a plurality of conducting strips, a pressing channel is formed among the conducting strips, the two ends of the pressing channel are provided with a sleeve end screen connector and a grounding wire respectively, and a pressing assembly is arranged outside the conducting strip group; according to the adjusting assembly and the pressing assembly of the sleeve end screen signal acquisition device, axial force cannot be applied to the end screen connector, meanwhile, force is evenly applied in the radial direction, and the sleeve end screen signal acquisition device is suitable for various wire diameters and convenient to replace.

Description

Technical Field

[0001] This application relates to the technical field of bushing end shield maintenance equipment, and particularly to a bushing end shield signal acquisition device. Background Art

[0002] The statements in this part merely provide background technical information related to this application and do not necessarily constitute prior art.

[0003] The bushing end shield of a transformer refers to the shield at the end of the bushing capacitor core, which must be grounded during normal operation of the transformer to ensure the electrical safety of the bushing; in addition, the bushing end shield can also be used as a measurement terminal for measuring the insulation resistance, dielectric loss, and capacitance of the bushing. In the prior art, if on-line monitoring of the bushing end shield of a transformer is required, the bushing end shield is usually connected to a bushing end shield adapter, which can lead out the leakage current signal of the transformer bushing end shield for measurement and analysis; the end shield adapter also has a grounding protection function to ensure that the bushing end shield is always reliably grounded during operation, and this grounding protection function can effectively prevent equipment damage caused by open circuit or poor grounding of the end shield. However, not all bushing end shields of transformers require real-time on-line monitoring. First, according to the requirements of the "State Maintenance Test Regulations for Transmission and Substation Equipment", the preventive test cycle of transformer bushings is 2 - 3 years for voltage levels of 220 kV, 110 kV and below. During the test cycle, through regular preventive tests, parameters such as the insulation resistance, dielectric loss, and capacitance of the bushing can be detected to evaluate the insulation status of the bushing. If the test results of the bushing meet the standard requirements and no abnormalities are found during the test cycle, then real-time on-line monitoring can be not carried out during the operation period between two tests. Second, if no abnormalities are found during the operation of the transformer bushing through means such as daily inspections and infrared temperature measurements, such as good grounding of the end shield, no overheating phenomenon, no discharge signs, etc., and the equipment has been in operation for a short time and the equipment itself is of reliable quality, then in this case, real-time on-line monitoring can be temporarily not carried out. However, regular inspections and necessary tests still need to be carried out to ensure the continuous safe operation of the equipment. Third, the real-time on-line monitoring system requires a certain investment cost, and only regular monitoring is selected for economic considerations.

[0004] In the prior art, the installation and use of the bushing grading ring adapter and the online monitoring technology of the bushing grading ring have been relatively mature, but they are all applicable to the situation of real-time monitoring. For the transformer bushing grading ring that only needs to be periodically detected, usually only the reliable grounding needs to be ensured, and it can be easily disassembled and assembled when online monitoring is required. If a bushing grading ring adapter is used, the cost is relatively high, and it is not easy to disassemble and assemble. At the same time, when connecting the bushing grading ring connector, since the root position where the bushing grading ring connector is connected to the bushing grading ring is relatively fragile, if it is subjected to excessive axial pressure, tensile force or bending force, it is prone to break, thus affecting the use.

[0005] In view of this, it is necessary to provide a bushing grading ring signal acquisition device with reliable grounding, good economy and convenient disassembly and assembly to solve the above technical problems. Summary of the Invention

[0006] Based on this, in view of the above technical problems, the present application provides a bushing grading ring signal acquisition device.

[0007] The technical solution adopted by the present application to solve the problems existing in the prior art is as follows: The present application proposes a bushing grading ring signal acquisition device, including: An installation component, an adjustment component and a conductive sheet group that are fixedly connected in sequence and are used to sleeve outside the bushing grading ring connector; The installation component is used for fixedly connecting with the bushing grading ring; The conductive sheet group includes a plurality of conductive sheets, and a pressing channel is formed between the plurality of conductive sheets. The two ends of the pressing channel are respectively provided with a bushing grading ring connector and a grounding wire; A pressing component is arranged outside the conductive sheet group; the pressing component is used to provide radial pressure for each conductive sheet outside the conductive sheet group to press the bushing grading ring connector and the grounding wire.

[0008] Preferably, The adjustment component includes an adjustment cylinder fixedly connected to one end of the installation component; an adjustment disk is rotatably arranged in the adjustment cylinder, and the adjustment disk is coaxially arranged with the adjustment cylinder; A through hole is formed in the middle of the adjustment disk, and a large bevel gear is annularly arranged around the bottom of the adjustment disk; an Archimedes spiral groove is arranged on the top plane of the adjustment disk; A rotating mechanism is arranged below the adjustment disk, and a small bevel gear meshing with the large bevel gear is arranged on the rotating mechanism; the rotating mechanism is rotatably connected with the adjustment cylinder; A plurality of adjustment sliders are arranged above the adjustment disk, and teeth matching with the Archimedes spiral groove are arranged at the bottom of the adjustment sliders; The adjustment slider is slidably connected with the adjustment cylinder through a sliding hole formed in the adjustment cylinder; One end of each adjustment slider close to the middle through hole of the adjustment disk is fixedly connected to one end of a conductive sheet.

[0009] Preferably, The rotation mechanism includes a rotating shaft, a small bevel gear is fixedly arranged at one end of the rotating shaft, and a rotating part is fixedly arranged at the other end; the rotating part and the adjustment cylinder form a rotating pair; A tightening opening is fixedly arranged at the center of the end of the rotating part; a tightening hole matching with the tightening opening is arranged on the adjustment cylinder.

[0010] Preferably, The pressing component includes a middle guiding cylinder, an upper locking threaded cylinder and a lower locking threaded cylinder are respectively fixedly arranged on both sides of the middle guiding cylinder; An upper pressing sheet group is fixedly arranged above the upper locking threaded cylinder; a lower pressing sheet group is fixedly arranged below the lower locking threaded cylinder; An upper locking part is threadedly connected to the outside of the upper locking threaded cylinder; a lower locking part is threadedly connected to the outside of the lower locking threaded cylinder; Both the upper locking part and the lower locking part include a locking sleeve and a locking opening.

[0011] Preferably, A plurality of guiding parts are fixedly arranged on the outside of the lower locking part; an outer guiding cylinder is arranged outside the guiding parts; the upper part of the outer guiding cylinder is fixedly connected to the lower part of the middle guiding cylinder through an annular connecting plate; An outer cylinder is fixedly arranged above the adjustment component, and a guiding sliding groove matching with the guiding parts is arranged at the top of the outer cylinder; The outer cylinder and the outer guiding cylinder form a cylindrical pair.

[0012] Preferably, A sliding sealing ring is arranged between the bottom of the outer guiding cylinder and the outer cylinder.

[0013] Preferably, The lower pressing sheet group includes a plurality of lower pressing sheets arranged at uniform intervals; The upper pressing sheet group includes a plurality of upper pressing sheets arranged at uniform intervals; Both the lower pressing sheet and the upper pressing sheet are metal elastic sheets; The conductive sheet is made of copper.

[0014] Preferably, The installation component includes a fixed seat, the inside of the fixed seat is of a cylindrical structure, and internal installation threads matching with the end screen connection seat are arranged inside the fixed seat.

[0015] Preferably, The fixed seat includes an installation base at the lower part and an outer installation part at the upper part; the outside of the outer installation part is threadedly connected to the outer protection cylinder.

[0016] Preferably, The outer protective cylinder is fixedly connected to the protective hose.

[0017] Compared with the prior art, the beneficial effects of the present application are as follows: 1. When the adjusting assembly clamps the bushing grading ring connector, the bushing grading ring connector located in the pressing channel of the conductive sheet group is never subjected to axial pressure, and there is no axial tension or pressure on the bushing grading ring connector; at the same time, when the adjusting disk rotates, the Archimedes spiral groove rotates to drive the adjusting slider to achieve synchronous radial movement, reducing the radial bending force received by the bushing grading ring joint, preventing the problem of fracture at the root of the bushing grading ring joint and the connection between the bushing grading ring due to axial force, and improving the reliability.

[0018] 2. When pressing through the pressing assembly, the bushing grading ring connector located in the pressing channel is never subjected to axial pressure, and there is no axial tension or pressure on the bushing grading ring connector, thus preventing the problem of fracture at the root of the bushing grading ring joint and the connection between the bushing grading ring due to axial force.

[0019] 3. When online monitoring is required, the wire replacement is convenient.

[0020] 4. The design of the conductive sheet group enables the bushing grading ring signal acquisition device of the present application to be applicable to grounding wires and bushing grading ring connectors with different wire diameter specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The schematic diagrams in the specification forming a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application.

[0022] Figure 1 FIG. is a schematic diagram of the overall structure of a bushing grading ring signal acquisition device of the present application in an embodiment; Figure 2 is Figure 1 a schematic diagram of the internal sectional structure of a bushing grading ring signal acquisition device of the present application; Figure 3 is Figure 2 a partial enlarged view of the area in; Figure 4 FIG. is a schematic diagram of the overall structure of the pressing assembly of a bushing grading ring signal acquisition device of the present application; Figure 5 is Figure 4 a schematic diagram of the overall structure of the pressing assembly after removing the outer guide cylinder in; Figure 6 is Figure 4 a schematic diagram of the transverse sectional structure of the pressing assembly in; Figure 7 Schematic diagram of the overall structure of the conductive sheet and the adjustment component of a bushing end shield signal acquisition device according to an embodiment of the present application Figure 8 is Figure 7 Schematic diagram of the connection structure between the conductive sheet and the adjustment slider in Figure 9 is Figure 7 Schematic diagram of the overall internal structure of the adjustment component from another angle in Figure 10 Schematic diagram of the positional relationship between the adjustment disk, the rotating mechanism and the adjustment slider inside the adjustment component Figure 11 is Figure 10 Schematic diagram of the overall structure from another angle Figure 12 Schematic diagram of the overall structure of a bushing end shield signal acquisition device according to another embodiment of the present application; Figure 13 Schematic diagram of the bushing end shield connection seat structure

[0023] In the figure: 1. Installation component, 10. Inner installation thread, 11. Installation base, 12. Outer installation part 2. Adjustment component, 20. Adjustment cylinder, 21. Adjustment slider, 22. Tightening opening 23. Adjustment disk, 230. Large bevel gear, 231. Archimedes spiral groove 24. Rotating mechanism, 240. Small bevel gear, 241. Rotating part, 242. Rotating shaft 25. Through hole 3. Outer cylinder 4. Compression component, 400. Middle guide cylinder, 401. Outer guide cylinder, 402. Upper locking thread cylinder, 403. Lower locking thread cylinder, 404. Lower locking part, 405. Upper locking part, 406. Lower pressing piece group, 407. Upper pressing piece group, 408. Guide chute, 409. Guide piece, 410. Gasket, 411. Sliding sealing ring 412. Locking sleeve, 413. Locking opening, 414. Ring-shaped connecting plate 5. Conductive sheet group, 6. Outer protection cylinder, 7. Protection hose, 8. Bushing end shield connection head, 80. End shield connection seat, 9. Ground wire Detailed implementation manners

[0024] The present application will be further described below with reference to the accompanying drawings and embodiments

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only relational terms determined for the convenience of describing the structural relationships of various components or elements of the present disclosure and do not specifically refer to any component or element in the present disclosure and should not be construed as a limitation to the present disclosure.

[0027] An embodiment of a signal acquisition device for the end screen of a bushing of the present application, referring to Figure 1 and Figure 2 , includes: An installation component 1, an adjustment component 2, and a conductive sheet group 5 that are fixedly connected in sequence and are used to sleeved outside the bushing end screen connector 8; Among them: The installation component 1 is used for fixedly connecting with the bushing end screen; Figure 13 is a schematic structural diagram of the end screen connection seat 80. The end screen connection seat 80 is fixedly arranged on the bushing end screen, and the bushing end screen connector 8 is led out from the middle; when in use, the installation component 1 is fixedly connected with the bushing end screen, which is to connect with the end screen connection seat 80. It should be noted that in actual applications, the end screen connection seat 80 has other structures, and in the present application, it is directed to Figure 13 the structure of the end screen connection seat 80 shown; The conductive sheet group 5 includes a plurality of conductive sheets. A pressing channel is formed between the plurality of conductive sheets, and the two ends of the pressing channel are respectively provided with a bushing end screen connector 8 and a grounding wire 9; the conductive sheets in the present application are arc-shaped structures and are made of copper because copper has better ductility and good electrical conductivity; when the conductive sheets are pressed, reliable electrical connection between the bushing end screen connector 8 and the grounding wire 9 can be achieved; A pressing component 4 is arranged outside the conductive sheet group 5; the pressing component 4 is used to provide radial pressure for each conductive sheet outside the conductive sheet group 5 to press the bushing end screen connector 8 and the grounding wire 9.

[0028] Referring to Figures 7 - 11, in this application, the adjustment component 2 includes an adjustment cylinder 20 with one end fixedly connected to the installation component 1; an adjustment disk 23 is rotatably arranged inside the adjustment cylinder 20, and the adjustment disk 23 is coaxially arranged with the adjustment cylinder 20; a through hole 25 is formed in the middle of the adjustment disk 23, and the through hole 25 is used to pass through the sleeve end screen connector 8; large bevel gears 230 are annularly arranged around the bottom of the adjustment disk 23; an Archimedes spiral groove 231 is arranged on the top plane of the adjustment disk 23; correspondingly, a rotating mechanism 24 is arranged below the adjustment disk 23, and a small bevel gear 240 meshing with the large bevel gear 230 is arranged on the rotating mechanism 24; the rotating mechanism 24 is rotatably connected to the adjustment cylinder 20; several adjustment sliders 21 are arranged above the adjustment disk 23, and teeth matching with the Archimedes spiral groove 231 are arranged at the bottom of the adjustment sliders 21; the adjustment sliders 21 are slidably connected to the adjustment cylinder 20 through sliding holes formed in the adjustment cylinder 20; one end of each adjustment slider 21 close to the through hole 25 in the middle of the adjustment disk 23 is fixedly connected to one end of a conductive sheet.

[0029] When in use, the installation component 1, the adjustment component 2 and the conductive sheet group 5 can be first sleeved outside the sleeve end screen connector 8, and then the rotating mechanism 24 is controlled to rotate. Refer to Figure 10 and Figure 11 , when the rotating mechanism 24 rotates, the small bevel gear 240 drives the large bevel gear to rotate, so that the adjustment disk 23 rotates. When the adjustment disk 23 rotates, the Archimedes spiral groove 231 rotates to drive the adjustment sliders 21 to achieve synchronous radial movement, and the pre-clamping of the conductive sheet group 5 on the sleeve end screen connector 8 is realized through the radial movement of the adjustment sliders 21.

[0030] It can be foreseen that since the ground wire 9 needs to be connected to the other end of the conductive sheet group 5, when in use, the radial movement of the adjustment sliders 21 can be first used to realize the pre-clamping of the conductive sheet group 5 on the sleeve end screen connector 8 to reserve the insertion space for the pressing channel of the ground wire 9; or the ground wire 9 can be introduced into the pressing channel and then the position of the adjustment sliders 21 can be adjusted.

[0031] It should be noted that the pre-clamping of the conductive sheet group 5 on the sleeve end screen connector 8 realized by the radial movement of the adjustment sliders 21 is achieved by the radial movement of each conductive sheet, and no axial pressure is applied to the sleeve end screen connector 8, and no axial tension or pressure will be caused to the sleeve end screen connector 8; at the same time, since the conductive sheet is made of copper and has good ductility, it can make good contact with the sleeve end screen connector 8.

[0032] Refer to Figure 10, in some embodiments, the rotating mechanism 24 includes a rotating shaft 242. A small bevel gear 240 is fixedly provided at one end of the rotating shaft 242, and a rotating part 241 is fixedly provided at the other end. The rotating part 241 and the adjusting cylinder 20 form a rotating pair. A tightening opening 22 is fixedly provided at the center of the end of the rotating part 241. A tightening hole matching with the tightening opening 22 is formed in the adjusting cylinder 20.

[0033] Reference Figures 2 - 6 , in some embodiments, the pressing assembly 4 includes a middle guiding cylinder 400. An upper locking threaded cylinder 402 and a lower locking threaded cylinder 403 are respectively fixedly provided on both sides of the middle guiding cylinder 400. An upper pressing piece group 407 is fixedly provided above the upper locking threaded cylinder 402. A lower pressing piece group 406 is fixedly provided below the lower locking threaded cylinder 403. An upper locking piece 405 is externally threadedly connected to the upper locking threaded cylinder 402. A lower locking piece 404 is externally threadedly connected to the lower locking threaded cylinder 403. Both the upper locking piece 405 and the lower locking piece 404 include a locking sleeve 412 and a locking opening 413.

[0034] In order to improve the bearing capacity of the conductive sheet group 5 and prevent it from being bent, in some embodiments, a plurality of guiding pieces 409 are fixedly provided on the outside of the lower locking piece 404. An outer guiding cylinder 401 is provided outside the guiding pieces 409. The upper part of the outer guiding cylinder 401 is fixedly connected to the lower part of the middle guiding cylinder 400 through an annular connecting plate 414. An outer cylinder 3 is fixedly provided above the adjusting assembly 2. A guiding sliding groove 408 matching with the guiding pieces 409 is formed at the top of the outer cylinder 3. The outer cylinder 3 and the outer guiding cylinder 401 form a cylindrical pair. The lower pressing piece group 406 includes a plurality of lower pressing pieces arranged at equal intervals, and the upper pressing piece group 407 includes a plurality of upper pressing pieces arranged at equal intervals. Both the lower pressing pieces and the upper pressing pieces are metal elastic pieces, and the conductive sheet is made of copper.

[0035] In order to improve the sealing ability, in some embodiments, a sliding sealing ring 411 is further provided between the bottom of the outer guiding cylinder 401 and the outer cylinder 3.

[0036] Reference Figure 3 and Figure 6 , after the conductive sheet group 5 pre-clamps the bushing end shield connector 8 by adjusting the radial movement of the slider 21, manually rotate the outer guiding cylinder 401. Through the threaded transmission between the lower locking threaded cylinder 403 and the lower locking piece 404, Figure 3 the lower locking piece 404 in it can be slowly moved upward. During its movement, the locking opening 413 presses on the lower pressing piece group 406, and the lower pressing pieces in the lower pressing piece group 406 converge pairwise, so that the lower pressing piece group 406 presses on the conductive sheet group 5, thereby reducing the diameter of the pressing channel and realizing further clamping of the bushing end shield connector 8.

[0037] Similarly, manually rotating the upper locking member 405 can further clamp the grounding wire 9.

[0038] In some embodiments, a gasket 410 is provided between the annular connecting plate 414 and the outer cylinder 3.

[0039] It should be noted that during the above process, the bushing end shield connector 8 located in the pressing channel of the conductive sheet group 5 has never received pressure in the axial direction, and there is no axial tension or pressure on the bushing end shield connector 8, thus preventing the problem of fracture at the root of the bushing end shield connector 8 and the connection part of the bushing end shield due to axial force, and improving the reliability.

[0040] In some embodiments, referring to Figure 1 and Figure 2 , the mounting assembly 1 includes a fixed seat. The interior of the fixed seat is a cylindrical structure, and an internal mounting thread 10 matching with the end shield connection seat 80 is provided inside the fixed seat. In some embodiments, the fixed seat includes a mounting base 11 below and an outer mounting portion 12 above; the exterior of the outer mounting portion 12 is threadedly connected to the outer protection cylinder 6, aiming to protect the adjustment assembly 2, the pressing assembly 4, and the conductive sheet group 5 through the outer protection cylinder 6.

[0041] In some embodiments, referring to Figure 12 , the outer protection cylinder 6 is fixedly connected to the protection hose 7, and the grounding wire 9 is sleeved inside the protection hose 7.

[0042] When on-line monitoring is required, unscrew the outer protection cylinder 6, then rotate the upper locking member 405 to extract the grounding wire 9, place the test line into the pressing channel, and tighten the upper locking member 405.

[0043] For a bushing end shield signal acquisition device of the present application, when on-line monitoring and signal acquisition are required, the wire replacement is convenient; the design of the conductive sheet group 5 enables the bushing end shield signal acquisition device of the present application to be applicable to grounding wires 9 and bushing end shield connectors 8 with different wire diameter specifications, with strong practicability and a wide application range.

[0044] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

[0045] Although the specific implementation manners of the present application have been described above in conjunction with the drawings, it is not a limitation to the protection scope of the present application. Those skilled in the art should understand that based on the technical solutions of the present application, various modifications or deformations that can be made without creative efforts by those skilled in the art are still within the protection scope of the present application.

Claims

1. A casing end screen signal acquisition device, characterized in that: include: The mounting assembly (1), the adjustment assembly (2) and the conductive sheet assembly (5) are sequentially fixedly connected and used to be sleeved outside the bushing end screen connector (8); The mounting assembly (1) is used for fixed connection with the casing end screen; The conductive sheet group (5) comprises a plurality of conductive sheets, a compression channel is formed between the plurality of conductive sheets, and a bushing end screen connector (8) and a grounding wire (9) are respectively provided at both ends of the compression channel; A clamping assembly (4) is provided outside the conductive sheet group (5); the clamping assembly (4) is used to provide radial pressure to each conductive sheet outside the conductive sheet group (5) so as to clamp the bushing end screen connector (8) and the grounding wire (9).

2. The casing end screen signal acquisition device according to claim 1, characterized in that: The adjustment assembly (2) comprises an adjustment cylinder (20) having one end fixedly connected to the mounting assembly (1); an adjustment disk (23) is rotatably provided inside the adjustment cylinder (20), and the adjustment disk (23) is coaxially arranged with the adjustment cylinder (20); A through hole (25) is provided in the middle of the adjustment disk (23); a large bevel gear (230) is provided in an annular manner around the bottom of the adjustment disk (23); and an Archimedean spiral groove (231) is provided on the top plane of the adjustment disk (23); A rotating mechanism (24) is provided below the adjustment disk (23); a small bevel gear (240) meshing with the large bevel gear (230) is provided on the rotating mechanism (24); the rotating mechanism (24) is rotationally connected to the adjustment cylinder (20); A plurality of adjustment sliders (21) are provided above the adjustment disk (23), and teeth cooperating with the Archimedean spiral groove (231) are provided at the bottom of the adjustment sliders (21); The adjusting slide block (21) is slidably connected to the adjusting cylinder (20) via a sliding hole provided on the adjusting cylinder (20); Each adjusting slider (21) is fixedly connected to one end of a conductive sheet above the end portion close to the middle through hole (25) of the adjusting disk (23).

3. A casing end screen signal acquisition device according to claim 2, characterized in that: The rotating mechanism (24) comprises a rotating shaft (242), one end of the rotating shaft (242) is fixedly provided with a small bevel gear (240), and the other end of the rotating shaft (242) is fixedly provided with a rotating portion (241); the rotating portion (241) and the adjusting cylinder (20) form a rotating pair; A tightening opening (22) is fixedly provided at the center of the end of the rotating portion (241); and a tightening hole matching the tightening opening (22) is provided on the adjusting cylinder (20).

4. The casing end screen signal acquisition device according to claim 1, characterized in that: The clamping assembly (4) comprises a middle guide cylinder (400), and an upper locking threaded cylinder (402) and a lower locking threaded cylinder (403) are respectively fixedly disposed on both sides of the middle guide cylinder (400); An upper pressing plate group (407) is fixedly provided above the upper locking threaded cylinder (402); and a lower pressing plate group (406) is fixedly provided below the lower locking threaded cylinder (403); The upper locking threaded barrel (402) is externally threadedly connected to an upper locking piece (405); the lower locking threaded barrel (403) is externally threadedly connected to a lower locking piece (404); The upper locking piece (405) and the lower locking piece (404) both comprise a locking sleeve (412) and a locking opening (413).

5. The casing end screen signal acquisition device according to claim 4, characterized in that: A plurality of guide members (409) are fixedly provided on the outside of the lower locking member (404); an outer guide cylinder (401) is provided on the outside of the guide member (409); the upper part of the outer guide cylinder (401) is fixedly connected to the lower part of the middle guide cylinder (400) via an annular connecting plate (414); An outer cylinder (3) is fixedly provided above the adjustment component (2), and a guide groove (408) cooperating with a guide member (409) is provided on the top of the outer cylinder (3); The outer cylinder (3) and the outer guide cylinder (401) form a cylindrical pair.

6. The casing end screen signal acquisition device according to claim 5, characterized in that: A sliding sealing ring (411) is provided between the bottom of the outer guide cylinder (401) and the outer cylinder (3).

7. The casing end screen signal acquisition device according to claim 4, characterized in that: The lower pressing sheet group (406) comprises a plurality of lower pressing sheets arranged at even intervals; The upper pressing sheet group (407) comprises a plurality of upper pressing sheets evenly spaced apart; The lower pressing plate and the upper pressing plate are both metal springs; The conductive sheet is made of copper.

8. The casing end screen signal acquisition device according to claim 1, characterized in that: The mounting assembly (1) comprises a fixing seat, the interior of the fixing seat is a cylindrical structure, and an internal mounting thread (10) is provided inside the fixing seat to cooperate with the end screen connecting seat (80).

9. The casing end screen signal acquisition device according to claim 8, characterized in that: The fixing seat comprises a mounting base (11) at a lower portion and an outer mounting portion (12) at an upper portion; the outer portion of the outer mounting portion (12) is threadedly connected to the outer protective tube (6).

10. The casing end screen signal acquisition device according to claim 9, characterized in that: The outer protective tube (6) is fixedly connected to the protective hose (7).

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