Electric isolation protection device for secondary terminal

Abstract

The invention provides an electric isolation protection device for a secondary terminal. The electric isolation protection device comprises two opposite mistaken touch prevention mechanisms and a shielding strip for connecting the mistaken touch prevention mechanisms. A strong magnet is arranged at the bottom of a fixing base of the mistaken touch prevention mechanism, a reel, an eccentric tensioning shaft and a driving mechanism are arranged in the fixing base, one end of a shielding strip is fixed to the reel after winding around the tensioning shaft, and coil springs on the two sides of the reel enable the shielding strip to be wound in the first direction. A lock shaft mechanism on the fixed seat is provided with a one-way separation shaft, a pivotal shaft and a pawl. The one-way separation shaft slides in the fixing base, the end, facing the reel, of the one-way separation shaft is provided with a first connecting part, the first connecting part is matched with a second connecting part of the reel and provided with a coupled handle, and separation and reunion of the connecting parts can be achieved by pushing and pulling the handle. The ratchet wheel part on the periphery of the one-way separation shaft is matched with the pawl, and the pawl is separated from the ratchet wheel at the first position in the first rotation direction and meshed with the second position in the second rotation direction. The secondary terminal electric isolation protection device is provided to replace an adhesive mode, so that the cost of consumables is reduced, the structure is stable, and the use is convenient.

Description

Technical Field

[0001] The invention relates to the field of power system maintenance, and in particular to a secondary terminal electric isolation protection device. Background Art

[0002] Important and complex protection devices such as busbar protection, main transformer protection, and remote tripping play an important role in ensuring the stable operation of the power grid. Therefore, during the maintenance of the secondary equipment of the power system, the operating status of these protections cannot be easily changed. In the field inspection work, the means of compiling relay protection safety measures tickets and implementing secondary safety measures are usually adopted to ensure the safety of the operation to avoid accidental contact with non-working terminal blocks or changes in equipment status. At this stage, the secondary safety measures are usually arranged with insulating tape to achieve sealing isolation of the terminal block to play an isolation and warning role. However, the use of insulating tape to seal the terminal has the following disadvantages: the tape is fixed by the colloid on it, and the colloid is easy to fall off during long-term use, leaving hidden dangers to the device. The tape will have a certain degree of adhesion to the terminal, which may damage the terminal; when the tape is removed, the residual colloid on the tape is easy to cause poor contact of the terminal. The secondary terminal electric isolation protection device developed in this project can replace the traditional method of using insulating tape to seal the terminal block. It can reliably cover the secondary terminal block and keep it fixed and prevent it from falling off. It solves the safety problems such as inadequate secondary safety measures caused by the falling off of the insulating tape due to hot weather or reduced viscosity in the traditional method, and better ensures the safe, stable and efficient operation of the equipment. Summary of the invention

[0003] The problem to be solved by the present invention is to provide a secondary terminal electric isolation protection device to replace the traditional adhesive method, thereby reducing the cost of consumables and having a stable structure and convenient use.

[0004] The technical solution adopted by the present invention to solve the above-mentioned problem is: a secondary terminal electric isolation protection device, including two oppositely arranged anti-mistaken touch mechanisms, and shielding strips whose two ends are respectively fixed on the two anti-mistaken touch mechanisms, the anti-mistaken touch mechanism includes a fixed seat, a strong magnet is installed at the bottom of the fixed seat, and a winding shaft and a tensioning shaft are rotatably arranged inside the fixed seat, the tensioning shaft is an eccentric shaft, and a driving mechanism is arranged on one side of the fixed seat to drive the eccentric shaft to rotate, one end of the shielding strip is fixed on the winding shaft after passing through the tensioning shaft, and coil springs are installed on both sides of the shielding strip on the winding shaft, and the coil springs are used to drive the shielding strip to be wound around the winding shaft along the first rotation direction, and a locking shaft mechanism is arranged on the fixed seat, and the locking shaft mechanism includes a one-way separation shaft, a pivot shaft, The pawl is a one-way separation shaft that is slidably connected in a fixed seat, and a first connection portion is provided at the end thereof facing the reel, and a second connection portion matching the first connection portion is provided on the reel. A handle is coupled to the one-way separation shaft, and a force is applied to the handle toward the reel so that the first connection portion cooperates with the second connection portion to form a transmission connection, and a force is applied to the handle away from the reel so that the first connection portion is separated from the second connection portion. A ratchet portion is provided on the outer periphery of the one-way separation shaft, and the pawl is mounted on the fixed seat through a pivot shaft, and when the ratchet rotates along a first rotation direction, the pawl rotates around the pivot shaft to a first position and separates from the ratchet portion, and when the ratchet rotates along a second rotation direction, the pawl rotates around the pivot shaft to a second position and engages with the ratchet portion.

[0005] Compared with the existing technology, this secondary safety device against misoperation forms the basic frame of the device through two relatively arranged anti-mistouch mechanisms. With the help of the strong magnet at the bottom of the fixed base, it can be firmly adsorbed on the metal working surface, providing a reliable installation foundation for the entire device and ensuring its stability in complex electrical working environments.

[0006] One end of the shielding strip is wound around the tensioning shaft and fixed on the reel, while the coil springs on both sides of the reel are the core power source for the automatic rewinding and storage of the shielding strip. The coil spring always drives the shielding strip to be wound on the reel along a specific first rotation direction. When the device is not in operation or the shielding range needs to be adjusted, the coil spring can automatically retract the shielding strip to prevent it from swinging randomly or affecting the operation of other equipment.

[0007] The one-way separation shaft of the locking shaft mechanism is cleverly placed in the fixed seat in a sliding connection manner, and the first connection part is provided at the end facing the reel, which matches the second connection part on the reel. The clutch action between the first connection part and the second connection part can be achieved by operating the handle. When a force is applied to the handle toward the reel, the two cooperate to form a transmission connection, so that the one-way separation shaft can work in conjunction with the reel to achieve linkage; and when a force is applied away from the reel, the two quickly separate to avoid unnecessary power transmission or interference caused by misoperation.

[0008] The ratchet part on the outer periphery of the one-way separation shaft and the pawl mounted on the fixed seat through the pivot shaft constitute a reliable one-way motion control mechanism. When the ratchet rotates in the first rotation direction, the pawl rotates to the first position under the action of the pivot shaft and separates from the ratchet part, allowing the one-way separation shaft to rotate smoothly to meet the operational requirements of preliminary fine-tuning of the tensioning force. When the ratchet rotates in the second rotation direction, the pawl rotates to the second position and tightly meshes with the ratchet part, effectively preventing the one-way separation shaft from rotating in the opposite direction and avoiding reducing the tensioning force.

[0009] After the locking mechanism has initially adjusted the tension to lock the reel, the shielding strip needs to be tightened and limited.

[0010] The tensioning shaft adopts an eccentric shaft design and is equipped with a special drive mechanism. This rotation process can effectively adjust the tension of the shielding strip, so that the shielding strip can have a certain strength to prevent pressing, avoiding external factors from interfering with or accidentally touching the secondary terminal block.

[0011] Furthermore, the handle includes an outer shell, the outer wall of which is slidably connected to the fixed seat along the axial direction of the one-way separation shaft, and a floating block and an elastic member are installed therein, a plurality of torsion teeth are arranged at intervals along the axial direction at the end face of the floating block facing the one-way separation shaft, and a conductive tooth corresponding to the torsion tooth is arranged at the other axial end face of the one-way separation shaft, and the elastic member drives the floating block to move toward the one-way separation shaft so that the conductive tooth and the torsion tooth form a meshing connection. The torsion tooth and the conductive tooth form a transmission connection through the cooperation of the torsion tooth and the conductive tooth, and due to the elastic force provided by the elastic member, when the reaction force transmitted to the torsion tooth by the reel is greater than the meshing force between the torsion tooth and the conductive tooth, after forced separation is formed between them, the torsion tooth is pressed toward the conductive tooth by the elastic member to form meshing.

[0012] Furthermore, the outer shell includes an outer shell and an adjustment cover, the outer shell is provided with a matching hole at one end facing the one-way separation shaft, and a mounting hole at the other end, the mounting hole has a diameter larger than the matching hole, and a limiting step is formed at the connection between the mounting hole and the matching hole, the floating block is installed in the mounting hole, and a limiting portion is also provided on the floating block, the diameter of the limiting portion is larger than the diameter of the mounting hole, the adjustment cover is fixed in the mounting hole, and the elastic member is arranged in the mounting hole between the floating block and the adjustment cover. The limiting step at the connection between the matching hole and the mounting hole cooperates with the limiting portion of the floating block to prevent the floating block from excessive displacement.

[0013] Furthermore, the adjustment cover includes a cover body and a pressure plate, the outer wall of the cover body is fixedly connected to the inner wall of the mounting hole, and the pressure plate includes an adjustment portion threadedly connected to the center of the cover body, and a pressing portion located at the end surface of the pressure plate facing the floating block. The cover body of the adjustment cover fits tightly to the inner wall of the mounting hole to form a stable foundation. The adjustment portion of the pressure plate is threadedly connected to the center of the cover body, thereby realizing flexible regulation of the internal space. When the adjustment portion is rotated, the pressure plate moves along the thread direction, changing the distance with the floating block to compress or release the spring.

[0014] Furthermore, the second connection part is a plurality of external splines that are arranged at one end of the reel and protrude along the outer circumference at intervals, and the first connection part is a plurality of internal splines that are arranged at the end surface of the one-way separation shaft facing the reel and are adapted to the external splines. The design of the internal splines and the external splines is ingenious and practical. When connection is required, the two can be precisely matched to ensure stable and reliable transmission between the one-way separation shaft and the reel, transmit power or maintain corresponding mechanical linkage; when separation, they can be quickly disengaged, and the operation is convenient.

[0015] Furthermore, the driving mechanism includes a turbine, a worm, and a manual rod. The turbine is installed at one end of the tensioning shaft and is meshed with the worm. A first bevel gear is installed at one end of the worm. The manual rod is rotatably connected to the fixed seat and one end thereof passes through the fixed seat, and a cross force adding head is installed at the end. A second bevel gear meshed with the first bevel gear is installed at the other end of the manual rod. The driving mechanism is mainly composed of a turbine, a worm, and a manual rod. The turbine is installed at one end of the tensioning shaft and meshed with the worm, and the rotation of the worm can be transmitted to the tensioning shaft. A first bevel gear is provided at one end of the worm, and the manual rod is rotatably connected to the fixed seat. One end passes through and is provided with a cross force adding head for convenient force application, and the second bevel gear at the other end is meshed with the first bevel gear. By rotating the cross force adding head, the worm and the turbine are driven to operate through the gear transmission, and then the tensioning shaft is driven to rotate, so as to realize the effective adjustment of the tensioning degree of the shielding strip.

[0016] Furthermore, a reminder plate is provided in the middle of the shielding strip, and a buckle is provided on one side of the reminder plate, and the buckle is snapped onto one side of the shielding strip. The reminder plate is provided in the middle of the shielding strip, and this design is extremely practical. The reminder plate can carry various warning signs, operating instructions and other important information, which is convenient for operators to quickly obtain key content and avoid misoperation. The buckle equipped on one side can be snapped onto one side of the shielding strip. This snap-on method is not only easy to install, but also can ensure that the reminder plate is firmly fixed on the shielding strip. Even if it is affected by external factors during the use of the device, the reminder plate will not be easily displaced or dropped, and it always plays a reminder role. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2This is a three-dimensional diagram of the anti-mistouch mechanism of the present invention without the fixing seat; Figure 3 is a cross-sectional view of the anti-mistouch mechanism of the present invention; Figure 4 It is an exploded view of the reel, the one-way separation shaft, and the floating block in the present invention; Figure 5 A side view of the pawl of the present invention pivoting to a second position; Figure 6 It is a side view of the pawl of the present invention pivoting to a first position.

[0018] Illustration: 1. Fixed seat; 2. Strong magnet; 3. Reel; 3.1. Second connection part; 4. Take-up shaft; 5. Driving mechanism; 5.1. Turbine; 5.2. Worm; 5.2.1. First bevel gear; 5.2.2. Cross force adding head; 5.3. Manual lever; 5.3.1. Second bevel gear; 6. Coil spring; 7. Locking shaft mechanism; 7.1. One-way separation shaft; 7.1.1. First connection part; 7.1.2. Ratchet part; 7.1.3. Transmission tooth; 7.2. Pivot shaft; 7.3. Ratchet Claw; 8, handle; 8.1, outer shell; 8.1.1, outer shell sleeve; 8.1.11, matching hole; 8.1.12, mounting hole; 8.1.13, limiting step; 8.1.2, adjusting cover; 8.1.21, cover body; 8.1.22, pressure plate; 8.1.23, adjusting part; 8.1.24, pressing part; 8.2, floating block; 8.2.1, torsion tooth; 8.2.2, limiting part; 8.3, elastic part; 9, shielding strip; 10, prompt plate; 10.1, buckle. DETAILED DESCRIPTION

[0019] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components described below or illustrated in the following figures. The present invention can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0020] Furthermore, on the first aspect, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the mechanism or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0021] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0022] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0023] See also Figures 1 to 6 , a secondary terminal electric isolation protection device, is constructed by two relatively arranged anti-accidental touch mechanisms and a shielding strip 9 connecting the two. The anti-accidental touch mechanism includes a fixed seat 1, and the strong magnet 2 attached to the bottom can be firmly adsorbed on the metal working plane to ensure the stability of the overall device. The internal reel 3 is in a rotational connection with the eccentrically structured tensioning shaft 4, and the driving mechanism 5 that drives the tensioning shaft 4 to rotate is composed of a turbine 5.1, a worm 5.2 and a manual rod 5.3. The turbine 5.1 is installed at one end of the tensioning shaft 4 and meshes with the worm 5.2 for transmission. One end of the manual rod 5.3 extends out of the fixed seat 1 and is equipped with a cross force head 5.2.2. The first bevel gear 5.2.1 equipped at one end of the worm 5.2 and the second bevel gear 5.3.1 at the other end of the manual rod 5.3 are meshed with each other, thereby accurately adjusting the tensioning shaft 4, thereby changing the tensioning degree of the shielding strip 9.

[0024] One end of the shielding strip 9 is fixed on the reel 3 after being wound around the tensioning shaft 4. The winding springs 6 on both sides of the reel 3 provide a continuous power source for winding the shielding strip 9 along a specific first rotation direction. When the device is idle or the shielding range needs to be adjusted, the winding spring 6 causes the shielding strip 9 to automatically rewind to the reel 3.

[0025] The shaft locking mechanism 7 on the fixed seat 1 includes a one-way separation shaft 7.1, which is assembled in the fixed seat 1 by means of a sliding connection. The end of the one-way separation shaft 7.1 facing the reel 3 is provided with a first connection portion 7.1.1 (inner spline form), which can realize a clutch operation with the second connection portion 3.1 (outer spline form) at the end of the reel 3. This action is achieved by the control of the handle 8. The outer shell 8.1 of the handle 8 includes an outer shell 8.1.1 and an adjustment cover 8.1.2. The matching hole 8.1.11 and the mounting hole 8.1.12 of the outer shell 8.1.1 respectively bear the functions of adapting related components and accommodating the floating block 8.2. The limiting step 8.1.13 at the junction of the mounting hole 8.1.12 and the matching hole 8.1.11 and the limiting portion 8.2.2 of the floating block 8.2 restrict each other, effectively preventing the floating block 8.2 from moving beyond the range. The cover body 8.1.21 of the adjustment cover 8.1.2 fits tightly with the inner wall of the mounting hole 8.1.12 to form a solid foundation. The adjustment part 8.1.23 of the pressure plate 8.1.22 and the center of the cover body 8.1.21 are connected by a threaded connection mode. The rotation of the adjustment part 8.1.23 can change the distance between the pressure plate 8.1.22 and the floating block 8.2, thereby compressing or releasing the elastic member 8.3 to adjust the elastic force. The torsion teeth 8.2.1 of the floating block 8.2 facing the end face of the one-way separation shaft 7.1 and the conduction teeth 7.1.3 of the one-way separation shaft 7.1 are meshed with each other under the elastic force of the elastic member 8.3 to achieve the purpose of power transmission, and can be forced to separate when encountering a large reaction force, and then mesh again under the action of the elastic member 8.3 to restore the connection.

[0026] The ratchet wheel part 7.1.2 on the outer periphery of the one-way separation shaft 7.1 and the pawl 7.3 mounted on the fixed seat 1 through the pivot shaft 7.2 form a reliable one-way motion restriction system. According to the difference in the rotation direction of the ratchet wheel, the pawl 7.3 switches between different positions under the coordinated action of the pivot shaft 7.2, accurately controlling the one-way rotation characteristics of the one-way separation shaft 7.1, and effectively avoiding the adverse effects caused by reverse rotation.

[0027] A prompt plate 10 is provided in the middle of the shielding strip 9 , and a buckle 10 . 1 on one side of the prompt plate 10 is tightly engaged with the shielding strip 9 .

[0028] The operation process is as follows: In the first step, the operator places one of the anti-mistaken touch mechanisms on the side of the terminal to be covered, and firmly adsorbs it on the mounting surface with the help of the magnet at the bottom of the fixing seat 1. Then, the other anti-mistaken touch mechanism is placed on the other side of the terminal, and is also adsorbed and fixed with the help of the magnet.

[0029] In the second step, the operator holds the handle 8 installed on one of the fixing seats 1 and applies a force toward the reel 3 to push the handle 8 and the one-way separation shaft 7.1. At this time, the one-way separation shaft 7.1 of the anti-mistaken touch mechanism will be locked by the ratchet mechanism, so that the shielding strip 9 cannot be output to the other anti-mistaken touch mechanism.

[0030] In the third step, the operator holds the handle 8 on the other fixing seat 1 and applies force to push the handle 8 and the one-way separation shaft 7.1 of the anti-accidental touch mechanism toward the reel 3. At this point, the one-way separation shafts 7.1 of the two anti-accidental touch mechanisms are locked by the ratchet mechanism, and the shielding strip 9 cannot be outputted from each other.

[0031] The fourth step is to rotate the handles 8 of the two anti-accidental touch mechanisms in the first rotation direction, so as to cause the reels 3 inside the two anti-accidental touch mechanisms to rotate in the first rotation direction, thereby causing the two ends of the shielding strip 9 to wind around the corresponding two reels 3. In this process, when the reaction force transmitted by the reels 3 to the torsion teeth 8.2.1 exceeds the meshing force between the torsion teeth 8.2.1 and the conductive teeth 7.1.3, the two will be forced to separate, and then the elastic member 8.3 will push the torsion teeth 8.2.1 to re-engage with the conductive teeth 7.1.3 again, so as to prevent excessive tension.

[0032] In the fifth step, the operator holds the cross force adding head 5.2.2 and turns the manual lever 5.3. The cross force adding head 5.2.2 at the end of the manual lever 5.3 drives the second bevel gear 5.3.1 at the other end to rotate, and the second bevel gear 5.3.1 meshes with the first bevel gear 5.2.1 at one end of the worm 5.2, driving the worm 5.2 to rotate, and the worm 5.2 further drives the turbine 5.1 meshed with it to rotate, and finally drives the tensioning shaft 4 to rotate. Since the tensioning shaft 4 is an eccentric shaft, its larger eccentric part will further tighten the shielding strip 9, thereby eliminating the elastic force of the shielding strip 9 itself, ensuring that it is in a stable protective state.

[0033] The above description is only for the best embodiment of the present invention, but it should not be understood as limiting the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the scope of protection of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A secondary terminal electric isolation protection device, characterized in that: It comprises two anti-accidental touch mechanisms arranged opposite to each other, and a shielding strip (9) with two ends respectively fixed on the two anti-accidental touch mechanisms; The anti-mis-touch mechanism comprises a fixed seat (1), a strong magnet (2) is installed at the bottom of the fixed seat (1), and a reel (3) and a tensioning shaft (4) are rotatably arranged inside the fixed seat (1), the tensioning shaft (4) is an eccentric shaft, and a driving mechanism (5) is arranged on one side of the reel for driving the eccentric shaft to rotate, one end of the shielding strip (9) is fixed on the reel (3) after passing through the tensioning shaft (4), and coil springs (6) are installed on both sides of the shielding strip (9) on the reel (3), and the coil springs (6) are used to drive the shielding strip (9) to be wound around the reel (3) along a first rotation direction, and a shaft locking mechanism (7) is arranged on the fixed seat (1); The shaft locking mechanism (7) comprises a one-way separation shaft (7.1), a pivot shaft (7.2) and a ratchet (7.3); the one-way separation shaft (7.1) is slidably connected in the fixing seat (1); a first connection portion (7.1.1) is provided at the end thereof facing the reel (3); a second connection portion (3.1) matching the first connection portion (7.1.1) is provided on the reel (3); a handle (8) is coupled to the one-way separation shaft (7.1); a force is applied to the handle (8) toward the reel (3) so that the first connection portion (7.1.1) cooperates with the second connection portion (3.1) to form a transmission connection; a force is applied to the handle (8) away from the reel (3) so that the first connection portion (7.1.1) is separated from the second connection portion (3.1); A ratchet portion (7.1.2) is provided on the outer periphery of the one-way separation shaft (7.1), and the ratchet pawl (7.3) is mounted on the fixed seat (1) via a pivot shaft (7.2); when the ratchet portion (7.1.2) rotates in a first rotation direction, the ratchet pawl (7.3) rotates around the pivot shaft (7.2) to a first position and is separated from the ratchet portion (7.1.2); when the ratchet rotates in a second rotation direction, the ratchet pawl (7.3) rotates around the pivot shaft (7.2) to a second position and is engaged with the ratchet portion (7.1.2).

2. A secondary terminal electric isolation protection device according to claim 1, characterized in that: The handle (8) comprises an outer shell (8.1), the outer wall of which is slidably connected to a fixed seat (1) along the axial direction of the one-way separation shaft (7.1), and a floating block (8.2) and an elastic member (8.3) are installed therein, a plurality of torsion teeth (8.2.1) are arranged at intervals along the axial direction at the end surface of the floating block (8.2) facing the one-way separation shaft (7.1), and a conductive tooth (8.2.1) corresponding to the torsion tooth (8.2.1) is arranged at the other axial end surface of the one-way separation shaft (7.1). 7.1.3), the elastic member (8.3) drives the floating block (8.2) to move toward the one-way separation shaft (7.1), so that the conductive tooth (7.1.3) and the torsion tooth (8.2.1) form a meshing connection.

3. A secondary terminal electric isolation protection device according to claim 2, characterized in that: The outer shell (8.1) comprises an outer shell sleeve (8.1.1) and an adjustment cover (8.1.2); the outer shell sleeve (8.1.1) is provided with a matching hole (8.1.11) at one end facing the one-way separation shaft (7.1), and a mounting hole (8.1.12) at the other end; the mounting hole (8.1.12) has a larger diameter than the matching hole (8.1.11), and a limiting step (8.1.12) is formed at the connection between the mounting hole (8.1.12) and the matching hole (8.1.11). 13), the floating block (8.2) is installed in the mounting hole (8.1.12), the floating block (8.2) is also provided with a limiting portion (8.2.2), the diameter of the limiting portion (8.2.2) is larger than the diameter of the mounting hole (8.1.12), the adjusting cover (8.1.2) is fixed in the mounting hole (8.1.12), and the elastic member (8.3) is arranged in the mounting hole (8.1.12) between the floating block (8.2) and the adjusting cover (8.1.2).

4. A secondary terminal electric isolation protection device according to claim 3, characterized in that: The regulating cover (8.1.2) comprises a cover body (8.1.21) and a pressure plate (8.1.22); the outer wall of the cover body (8.1.21) is fixedly connected to the inner wall of the mounting hole (8.1.12); the pressure plate (8.1.22) comprises an regulating portion (8.1.23) threadedly connected to the center of the cover body (8.1.21), and a pressing portion (8.1.24) located at the end surface of the pressure plate (8.1.22) facing the floating block (8.2).

5. A secondary terminal electric isolation protection device according to claim 1, characterized in that: The second connection part (3.1) is a plurality of external splines arranged at one end of the reel (3) and protruding at intervals along the outer circumference, and the first connection part (7.1.1) is a plurality of internal splines arranged at the end surface of the one-way separation shaft (7.1) facing the reel (3) and adapted to the external splines.

6. A secondary terminal electric isolation protection device according to claim 1, characterized in that: The driving mechanism (5) comprises a turbine (5.1), a worm (5.2), and a manual lever (5.3); the turbine (5.1) is mounted at one end of the tensioning shaft (4) and meshed with the worm (5.2); a first bevel gear (5.2.1) is mounted at one end of the worm (5.2); the manual lever (5.3) is rotatably connected to a fixed seat (1) and one end thereof passes through the fixed seat (1), and a cross force adding head (5.2.2) is mounted at the end; and a second bevel gear (5.3.1) meshed with the first bevel gear (5.2.1) is mounted at the other end of the manual lever (5.3).

7. A secondary terminal electric isolation protection device according to claim 1, characterized in that: A prompt plate (10) is provided in the middle of the shielding strip (9), a buckle (10.1) is provided on one side of the prompt plate (10), and the buckle (10.1) is snap-connected to one side of the shielding strip (9).

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