An insulating rod device for live installation of transformer high and low voltage pile head insulating sheath

Abstract

The invention relates to an insulating rod device for live installation of an insulating sheath of a transformer high and low voltage pile head, and relates to the technical field of power-related, including an insulating rod, an extension rod, a U-shaped main board, a fastener, a first slot part, a second slot part, a threaded locking assembly, a rotating part, a clamping assembly, and a linkage assembly. The present application can solve the problem that the existing method of fixing it usually adopts the above-mentioned installation tool or the slot head to directly clamp its opening. In order to facilitate the separation from the insulating sheath after installation, a clamping or simple clamping method is often adopted. However, since the insulating sheath is light in weight and needs to be transported in the air for a certain period of time before being installed on the transformer high and low voltage pile head, simple clamping or clamping causes the insulating sheath to be skewed due to unstable fixation, which is not conducive to subsequent installation. What's more, the insulating sheath may directly fall off.

Description

Technical Field

[0001] The present invention relates to the technical field related to electric power, and in particular to an insulating rod device for live-mounting insulating sheaths of high and low voltage pile heads of transformers. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. It is mainly composed of a primary coil, a secondary coil, and an iron core. It has various functions, including voltage conversion, current conversion, impedance conversion, isolation, and voltage stabilization. It is a basic equipment for power transmission and distribution, and is widely used in industry, agriculture, transportation, urban communities and other fields. The high and low voltage pile heads of the transformer are important components of the transformer. They are connected to the high and low voltage sides of the transformer respectively, and are used for the input and output of electrical energy. In order to prevent power outages caused by accidental human contact, electricity theft, contact with small animals or debris, wet flash salt spray and chemical gas corrosion, etc., the high and low voltage pile heads are usually covered with insulating sheaths for insulation and safety protection.

[0003] Existing insulating sheath installation, such as the Chinese patent publication number CN216849545U, discloses an insulating protective cover for live transformer installation and an installation tool, comprising a cover body with a cavity inside; a wire hole for passing the wiring and a pile hole for passing the wiring pile head are respectively opened at both ends of the cover body, and the wire hole and the pile hole are set through; a through slit is set along the center line on one side of the cover body, which passes through the upper and lower end surfaces of the cover body, and the end opposite to the through slit also has a partial slit. When the cover body is in an open state, the cover body has a rebound structure, and the rebound structure is used to close the cover body along the through slit. Its beneficial effects are: it is convenient to observe the operating status of the equipment, has the functions of heat dissipation and ventilation, and is convenient for temperature measurement, and the operation is efficient and convenient, and it performs shielded insulation protection.

[0004] In the above technology, ventilation, temperature measurement effect and portability are mainly considered, and the stability of clamping during high-altitude transportation is not taken into account. The existing method of fixing it usually adopts the above-mentioned installation tool or the slot head to directly clamp its opening. In order to facilitate separation from the insulating sheath after installation, clamping or simple clamping methods are often used. However, since the insulating sheath is light in weight and needs to be transported at high altitude for a certain period of time before being installed on the high and low voltage pile heads of the transformer, simple clamping or clamping will cause the insulating sheath to be skewed due to unstable fixation, which is not conducive to subsequent installation. What's worse, the insulating sheath will fall off directly.

[0005] Based on this, there is still room for improvement based on the existing insulation sheath installation. Summary of the Invention

[0006] The purpose of the present invention is to provide an insulating rod device for live installation of high and low voltage pile head insulating sheaths of transformers, so as to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The invention relates to an insulating rod device for live installation of insulating sheaths of high and low voltage pile heads of transformers, comprising an insulating rod; an extension rod, one end of which is connected to the upper end of the insulating rod by a connecting piece; a U-shaped main board, a fastener being provided in a sliding groove provided on its side for sliding up and down, and the fastener is connected to the other end of the extension rod for position locking; a first clamping member, which is locked in position with the right end of the U-shaped main board by a screw member; a second clamping member, which is slidably provided in a sliding groove provided on the left end of the U-shaped main board, the position between the second clamping member and the U-shaped main board is locked by a threaded locking assembly, and the left end of the second clamping member is connected to the rotating member by threaded engagement; a clamping assembly, which is slidably provided in the right half of the second clamping member, and the clamping assembly, after being squeezed by the threaded locking assembly, moves to the right to form a clamping engagement with the second clamping member, thereby doubly clamping the insulating sheath; a linkage assembly, which links the positions of the fastener and the clamping assembly, and when the fastener drops to the lowest position of the sliding groove, cooperates with the linkage assembly to control the clamping assembly to release the clamping.

[0009] As a preferred technical solution of the present invention, the fastener includes a movable block, a fixed part, and a movable part. The movable block is set in a sliding groove for sliding up and down. The fixed part is fixedly installed on the lower left end of the movable block. The movable part is set on the upper left end of the movable block for sliding up and down. The movable part and the fixed part corresponding to the upper and lower positions are locked in position by a bolt part.

[0010] As a preferred technical solution of the present invention, the second slot member includes a card joint and a movable rod. The card joint is installed at the right end of the movable rod, and the movable rod is slidable left and right in the sliding slot.

[0011] As a preferred technical solution of the present invention, the threaded locking assembly includes a pressing block, which is arranged on the left side of the inner cavity of the movable rod for sliding up and down, and a connecting groove is opened inside the pressing block, and an alignment rod is arranged in the connecting groove for sliding left and right; an elastic telescopic rod, which is arranged between the pressing block and the bottom of the inner cavity of the movable rod; a resistance column, which is arranged at the bottom of the inner cavity of the movable rod for sliding up and down, and the lower end face of the resistance column squeezed by the pressing block contacts the resistance layer to lock the position between the movable rod and the U-shaped main board, and the resistance layer is installed at the bottom of the sliding groove; a threaded column, the middle part of which is connected to the upper end of the U-shaped main board by threaded cooperation, the upper end of the threaded column is installed with a handle, and the lower end of the threaded column is connected to the pressing plate through a bearing; an extrusion head, which is installed on the upper side of the right end of the pressing block.

[0012] As a preferred technical solution of the present invention, the middle portion of the rotating member is a threaded structure, and the middle portion of the rotating member and the left end of the movable rod are connected by a threaded fit.

[0013] As a preferred technical solution of the present invention, the clamping assembly includes an injection guide rod, which is slidable left and right in the middle of the inner cavity of the movable rod; an air intake rod, whose left end is connected to the right end of the injection guide rod; and a clamping plate, which is installed at the right end of the air intake rod, and a clamping airbag is provided at the right end of the clamping plate.

[0014] As a preferred technical solution of the present invention, the injection guide rod includes a rod body, an air cavity, a piston member, and an air hole. An air cavity is opened inside the rod body, a piston member is slidably arranged in the air cavity, an air hole is opened at the lower end of the piston member, and the positions of the rotating member, the alignment rod, and the piston member correspond to each other.

[0015] As a preferred technical solution of the present invention, the intake rod includes a connecting rod, a displacement rod and a position correction part. The left end of the connecting rod is connected to the right end of the rod body. The right end inclined surface of the connecting rod and the left end inclined surface of the displacement rod are slidingly fitted. The right end of the displacement rod is connected to the clamping plate, and the front end side wall of the displacement rod is fixedly connected to the position correction part.

[0016] As a preferred technical solution of the present invention, cavity one is provided in the connecting rod, and cavity two is provided in the displacement rod. When the connecting rod and the displacement rod are aligned, cavity one and cavity two are in a connected state, and the right end inclined surface of the connecting rod is a structure that gradually tilts backward from left to right.

[0017] As a preferred technical solution of the present invention, the linkage assembly includes a sliding frame and an elastic telescopic part. An L-shaped groove is opened at the left end of the U-shaped main board. A sliding frame is arranged in the L-shaped groove for sliding back and forth. An elastic telescopic part is connected between the middle part of the sliding frame and the U-shaped main board.

[0018] As a preferred technical solution of the present invention, a built-in groove is provided at the upper end of the rear end side wall of the movable block, and the position between the front end of the sliding frame corresponds to the built-in groove, and the rear end lateral part of the sliding frame is squeezed and fitted with the position correction part.

[0019] In summary, this application has the following beneficial technical effects:

[0020] The present invention provides an insulating rod device for live installation of the insulating sheath of the high and low voltage pile head of the transformer. The present application performs basic clamping clamping on the insulating sheath through the first slot part and the second slot part, and adds a clamping assembly in the second slot part. While the second slot part is locked in position, the clamping assembly cooperates with the second slot part to further clamp one side of the insulating sheath. Subsequently, the internal gas of the clamping airbag in the clamping assembly (the clamping airbag and the insulating sheath are in a fitted state) is filled with gas by gas propulsion to improve the fit between the clamping airbag and the insulating sheath, thereby further improving the clamping tightness, improving the wind resistance effect and the stability of high-altitude operations. For subsequent unlocking, the staff only needs to pull down the insulating rod to unlock the clamping assembly. At this time, the clamping assembly loses the clamping effect, and the U-shaped mainboard can be safely and efficiently separated from the insulating sheath by translation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the installation position between the present invention and the insulating sheath;

[0023] Figure 3 It is a top view of the U-shaped mainboard, fastener, first slot member, second slot member, thread locking assembly, rotating member, clamping assembly, and linkage assembly of the present invention;

[0024] Figure 4 This invention Figure 3 AA cross-sectional view;

[0025] Figure 5 This invention Figure 4 Schematic diagram of the local structure;

[0026] Figure 6 It is a partial cross-sectional view of the U-shaped mainboard, fastener, first slot member, second slot member, thread locking assembly, rotating member, clamping assembly, and linkage assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the U-shaped mainboard, fastener, first slot member, second slot member, thread locking assembly, rotating member, clamping assembly, and linkage assembly of the present invention;

[0028] Figure 8 This invention Figure 6 A local enlarged view of point X;

[0029] Figure 9 This invention Figure 7 A partial enlarged view of point Y.

[0030] Explanation of reference numerals: 1. insulating rod; 2. extension rod; 3. U-shaped main board; 4. fastener; 5. first slot member; 6. second slot member; 7. threaded locking assembly; 8. rotating member; 9. clamping assembly; 10. linkage assembly; 41. movable block; 42. fixing member; 43. movable member; 61. card joint; 62. movable rod; 71. pressing block; 72. alignment rod; 73. elastic telescopic rod; 74. resistance column; 75 , resistance layer; 76, threaded column; 77, pressing plate; 78, extrusion head; 91, injection guide rod; 92, air intake rod; 93, clamping plate; 94, clamping airbag; 101, sliding frame; 102, elastic telescopic part; 911, rod body; 912, air cavity; 913, piston part; 914, air hole; 921, connecting rod; 922, displacement rod; 923, position correction part; 924, cavity one; 925, cavity two. DETAILED DESCRIPTION

[0031] The following is combined with Figures 1 to 9 This application is described in further detail.

[0032] An embodiment of the present application discloses an insulating rod device for live installation of insulating sheaths of high and low voltage pile heads of transformers. The present application further clamps the insulating sheath so that the insulating sheath can be stably transported at high altitudes with the help of a raised insulating rod 1, thereby preventing the insulating sheath from escaping from the situation described in the present application.

[0033] Reference Figures 1 to 7 As shown, the present embodiment discloses an insulating rod device for live installation of a high and low voltage pile head insulating sheath of a transformer, comprising an insulating rod 1, an extension rod 2, a U-shaped main board 3, a fastener 4, a first slot part 5, a second slot part 6, a threaded locking assembly 7, a rotating part 8, a clamping assembly 9, and a linkage assembly 10. The insulating rod 1 is a fixed base, one end of the extension rod 2 is connected to the upper end of the insulating rod 1 through a connecting piece, a fastener 4 is provided in a sliding groove opened on the side of the U-shaped main board 3 for sliding up and down, the fastener 4 is connected to the other end of the extension rod 2 for position locking, the first slot part 5 is locked in position with the right end of the U-shaped main board 3 by a screw, and the second slot part 6 is slidably provided in the U-shaped main board 3. In the sliding groove opened at the left end of the main board 3, the position between the second slot part 6 and the U-shaped main board 3 is locked by the threaded locking component 7. The left end of the second slot part 6 is connected to the rotating part 8 by threaded cooperation. The clamping component 9 is slidably arranged in the right half of the second slot part 6. After being squeezed by the threaded locking component 7, the clamping component 9 moves to the right to form a clamping cooperation with the second slot part 6 and then double clamps the insulating sheath. The linkage component 10 performs linkage cooperation on the position between the fastener 4 and the clamping component 9. When the fastener 4 drops to the lowest position of the sliding groove, it cooperates with the linkage component 10 to control the clamping component 9 to release the clamping.

[0034] In the actual operation process, adjust the position between the first slot part 5 and the U-shaped main board 3, and lock the position through the screw after the position is determined, and then insert the cylindrical opening of the insulating sleeve into the first slot part 5 and the second slot part 6 (the position of the second slot part 6 can be adjusted according to the insulating sleeve of different diameters). After insertion, the position between the second slot part 6 and the U-shaped main board 3 is locked by the threaded locking component 7. At the same time, the threaded locking component 7 squeezes the clamping component 9 so that it and the second slot part 6 clamp the left side of the insulating sleeve, and then rotates the rotating part 8. Under the action of air push, the clamping component 9 forms a secondary clamping on the left side of the insulating sleeve, and the first slot part 5, the second slot part 6, and the clamping component 9 are clamped. Component 9 performs multiple clamping of the insulating sheath, and then assembles the insulating rod 1, the extension rod 2, and the U-shaped main board 3 and adjusts the angle between the extension rod 2 and the U-shaped main board 3 and the length of the insulating rod 1. The insulating rod 1 is slowly lifted, and the transformer insulating sheath is kept in a stable state during the lifting process. After the cylindrical opening of the insulating sheath passes over the high-voltage side insulator lead, it is gently placed on the high and low voltage pile heads, and then the insulating rod 1 is pulled down, and the clamping component 9 is unlocked through the cooperation between the fastener 4 and the linkage component 10, so that it loses the clamping effect on the opening position of the insulating sheath, and then the U-shaped main board 3 is pushed horizontally to disengage the insulating sheath from the first slot 5 and the second slot 6. At this time, the electrified installation of the insulating sheath is completed.

[0035] Reference Figure 3 、 Figure 7 As shown, the fastener 4 includes a movable block 41, a fixed part 42, and a movable part 43. The movable block 41 is set in a sliding groove for sliding up and down. The fixed part 42 is fixedly installed on the lower left end of the movable block 41, and the movable part 43 is set on the upper left end of the movable block 41 for sliding up and down. The movable part 43 and the fixed part 42 corresponding to the upper and lower positions are locked in position by bolts.

[0036] During the actual fixing process, the front end of the extension rod 2 is inserted between the fixed part 42 and the movable part 43, and the distance between the movable part 43 and the fixed part 42 is shortened by the bolt part to clamp the front end of the extension rod 2. In the early assembly process and the subsequent lifting process of the insulating rod 1, the movable block 41 is in the highest position.

[0037] Reference Figure 4 、 Figure 5 As shown, the second slot member 6 includes a clamping joint 61 and a movable rod 62 . The clamping joint 61 is installed at the right end of the movable rod 62 , and the movable rod 62 is slidably arranged in the sliding slot.

[0038] Reference Figure 5As shown, the thread locking assembly 7 includes a pressing block 71, an alignment rod 72, an elastic telescopic rod 73, a resistance column 74, a resistance layer 75, a threaded column 76, a pressing plate 77, and an extrusion head 78. The pressing block 71 is slidably arranged on the left side of the inner cavity of the movable rod 62. A connecting groove is provided inside the pressing block 71. The alignment rod 72 is slidably arranged in the connecting groove. The elastic telescopic rod 73 is arranged between the pressing block 71 and the bottom of the inner cavity of the movable rod 62. The elastic telescopic rod 73 always keeps the pressing block 71 pushing upward. The resistance column 74 slides up and down and is set at the bottom of the inner cavity of the movable rod 62. The lower end surface of the resistance column 74 squeezed by the pressing block 71 contacts the resistance layer 75, thereby locking the position between the movable rod 62 and the U-shaped main board 3. The resistance layer 75 is installed at the bottom of the sliding groove. The middle part of the threaded column 76 is connected to the upper end of the U-shaped main board 3 through threaded cooperation. A handle is installed at the upper end of the threaded column 76. The lower end of the threaded column 76 is connected to the pressing plate 77 through a bearing. The extrusion head 78 is installed on the upper right end of the pressing block 71.

[0039] Reference Figure 4 、 Figure 5 、 Figure 8 As shown, the clamping assembly 9 includes an injection guide rod 91, an air intake rod 92, a clamping plate 93, and a clamping airbag 94. The injection guide rod 91 is slid left and right and is set in the middle of the inner cavity of the movable rod 62. The left end of the air intake rod 92 is connected to the right end of the injection guide rod 91. The clamping plate 93 is installed at the right end of the air intake rod 92. The right end of the clamping plate 93 is provided with a clamping airbag 94.

[0040] During the actual operation, the movable rod 62 is slid left and right to move to the appropriate position, and then the handle is turned to drive the pressing plate 77 to descend through the spiral downward threaded column 76. After the pressing plate 77 and the pressing block 71 come into contact, the two are synchronously lowered. During the descending process, the extrusion head 78 on the pressing block 71 squeezes the upper inclined surface of the left end of the rod body 911, so that the clamping assembly 9 moves to the right as a whole, and the left opening of the insulating sheath cylinder is clamped by the clamping plate 93 and the inner right side wall of the clamping joint 61. As block 71 continues to descend, it fits with resistance column 74 and then descends synchronously. The resistance column 74 contacts the resistance layer 75 to lock the position between movable rod 62 and U-shaped main board 3. At this time, the rotating member 8 and alignment rod 72 are aligned left and right. Rotate the rotating member 8 to make it move right in a spiral manner, thereby pushing the alignment rod 72 to move right. According to the piston movement principle, the gas in injection guide rod 91 is pushed into clamping airbag 94, thereby further fitting and clamping the left opening of the insulating sheath cylinder.

[0041] Reference Figure 8 As shown, the middle portion of the rotating member 8 is a threaded structure, and the middle portion of the rotating member 8 and the left end of the movable rod 62 are threadedly connected.

[0042] The rotating member 8 is rotated to move rightward in a spiral manner, thereby pushing the alignment rod 72 to move rightward.

[0043] Reference Figure 5 、 Figure 8 、 Figure 9 As shown, the present application further clamps by the clamping assembly 9, but considering the high-altitude live operation, it is necessary to design an unlockable clamping structure so that the clamping assembly 9 can be disengaged after the insulating sheath is installed. Therefore, the structure of the injection guide rod 91 and the linkage assembly 10 is further improved. Specifically, the injection guide rod 91 includes a rod body 911, an air cavity 912, a piston member 913, and an air hole 914. The rod body 911 is provided with an air cavity 912, and a piston member 913 is slidably provided in the air cavity 912. The lower end of the piston member 913 is provided with an air hole 914. When the pressing block 71 does not drop to the lowest position, the left side of the air hole 914 The end is in an open state, thereby maintaining the stability of the pressure between the inside of the air cavity 912 and the outside world, and the positions of the rotating part 8, the alignment rod 72, and the piston part 913 correspond to each other. After the rotating part 8 and the alignment rod 72 that has dropped to the lowest position are aligned left and right, the rotating part 8 is rotated to move it to the right in a spiral manner, thereby pushing the alignment rod 72 to move to the right, and the alignment rod 72 squeezes the piston part 913 to move to the right synchronously, thereby pushing the gas in the air cavity 912 through cavity 1 924 and cavity 2 925 in turn and then into the clamping airbag 94, so that after it is overflowed, it is further fitted to the left opening of the insulating sheath cylinder, thereby improving the clamping tightness.

[0044] Reference Figure 8 、 Figure 9 As shown, the air intake rod 92 includes a connecting rod 921, a displacement rod 922 and a position correction member 923. The left end of the connecting rod 921 is connected to the right end of the rod body 911, and the right end inclined surface of the connecting rod 921 and the left end inclined surface of the displacement rod 922 are slidingly fitted. The right end of the displacement rod 922 is connected to the clamping plate 93, and the front end side wall of the displacement rod 922 is fixedly connected to the position correction member 923; a cavity 1 924 is provided in the connecting rod 921, and a cavity 2 925 is provided in the displacement rod 922. When the connecting rod 921 and the displacement rod 922 are aligned, cavity 1 924 and cavity 2 925 are in a connected state. The right end inclined surface of the connecting rod 921 is a structure that gradually tilts backward from left to right. At this time, the air cavity 912, cavity 1 924, cavity 2 925 and the clamping airbag 94 are connected.

[0045] Reference Figure 8 、 Figure 9As shown, the linkage assembly 10 includes a sliding frame 101 and an elastic telescopic member 102. An L-shaped groove is provided at the left end of the U-shaped main board 3, and a sliding frame 101 is provided in the L-shaped groove for sliding back and forth. An elastic telescopic member 102 is connected between the middle part of the sliding frame 101 and the U-shaped main board 3; a built-in groove is provided at the upper end of the rear end side wall of the movable block 41, and the position of the front end of the sliding frame 101 corresponds to the position between the built-in groove, and the rear end transverse part of the sliding frame 101 is squeezed and matched with the position correction member 923, and the rear end transverse part of the sliding frame 101 and the position correction member 923 are in contact but not fixedly connected. When the position correction member 923 moves with the displacement rod 922, it does not affect the cooperation with the sliding frame 101. When the sliding frame 101 is in the rear position, its rear end transverse part always forms an extrusion state on the position correction member 923. At this time, the connecting rod 921 and the displacement rod 922 are always in a straight rod structure.

[0046] During the actual operation, during the installation of the insulating sheath, the insulating sheath is multiple-clamped by the first slot part 5, the second slot part 6, and the clamping assembly 9. After the insulating sheath is placed on the high and low voltage pile heads of the transformer, the insulating rod 1 is pulled down and the movable block 41 drops synchronously (because the insulating sheath has been sleeved on the high and low voltage pile heads of the transformer, the height of the U-shaped main board 3 remains unchanged). At this time, the sliding frame 101 moves forward under the action of the elastic telescopic part 102 so that its front end is stuck in the built-in groove, and the rear end horizontal part of the sliding frame 101 no longer squeezes the position correction part 923. At this time, the position between the connecting rod 921 and the displacement rod 922 is unlocked, and then the U-shaped main board 3 is translated by the insulating rod 1. At this time, due to the right-moved clamping plate 93 and the inflated clamping airbag 94, the left side of the insulating sheath is clamped. Still in the clamping state, as the U-shaped main board 3 moves backward, the displacement rod 922 and the connecting rod 921 are misaligned, and the displacement rod 922 moves diagonally forward and outward along the inclined position of the connecting rod 921. During the movement, the displacement rod 922 drives the clamping plate 93 away from the clamping area, and the misalignment between the displacement rod 922 and the connecting rod 921 causes the left end of the cavity 2 925 of the displacement rod 922 to be in an open state. At this time, the gas in the clamping airbag 94 is quickly discharged, and the clamping assembly 9 loses its clamping effect. When it needs to be reset later, it is only necessary to push up the movable block 41 to squeeze the front end of the sliding frame 101 out of the built-in groove (at this time, the rear end lateral part of the sliding frame 101 squeezes the position correction part 923 to reset the displacement rod 922 diagonally until the connecting rod 921 and the displacement rod 922 form a straight rod structure).

[0047] Working principle:

[0048] Step 1: Check the tools;

[0049] Step 2: Adjust the position between the first slot member 5 and the U-shaped mainboard 3, and lock the position with screws after the position is determined;

[0050] Step 3: Open the inlet position of the insulating sheath cylinder to form an opening, and insert the opening slot into the first card slot member 5 and the second card slot member 6. Use the threaded locking assembly 7 to lock the position between the adjusted second card slot member 6 and the U-shaped main board 3. At the same time, the extrusion head 78 on the descending pressing block 71 squeezes the inclined structure of the rod body 911, so that the clamping assembly 9 moves to the right as a whole, and the left opening of the insulating sheath cylinder is clamped by the clamping plate 93 and the clamping joint 61.

[0051] Step 4: Rotate the rotating member 8 to make it move rightward in a spiral manner, thereby pushing the alignment rod 72 to move rightward. The alignment rod 72 squeezes the piston member 913 to move rightward synchronously, thereby pushing the gas in the air cavity 912 into the clamping airbag 94. After the air is filled, the left opening of the insulating sheath cylinder is further clamped in a close-fitting manner.

[0052] Step 5: After the two sides of the insulating sheath are clamped, slowly lift the insulating rod 1, keep the transformer insulating sheath in a stable state during the lifting process, and after the cylindrical opening of the insulating sheath passes over the high-voltage side insulator lead, gently place it on the high and low voltage pile heads, then pull down the insulating rod 1, unlock the clamping assembly 9 through the cooperation between the fastener 4 and the linkage assembly 10, so that it loses the clamping effect on the opening position of the insulating sheath, and then push the U-shaped main board 3 horizontally to separate the insulating sheath from the first slot member 5 and the second slot member 6;

[0053] Step 6: The electrified installation of the insulating sheath is completed.

[0054] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. An insulating rod device for live installation of high and low voltage pile head insulating sheath of transformer, characterized in that: include: Insulating rod (1); An extension rod (2), one end of which is connected to the upper end of the insulating rod (1) via a connecting piece; A U-shaped main board (3) has a sliding groove on its side in which a fastener (4) is provided for sliding up and down movement, and the fastener (4) is connected to the other end of the extension rod (2) in a position-locking manner; A first slot member (5) which is locked in position with the right end of the U-shaped main board (3) via a screw member; A second slot member (6) is slidably arranged in a sliding slot provided at the left end of the U-shaped main board (3); the position between the second slot member (6) and the U-shaped main board (3) is locked by a thread locking assembly (7); the left end of the second slot member (6) is connected to the rotating member (8) by means of threaded engagement; A clamping assembly (9) is slidably arranged in the right half of the second slot member (6). After being squeezed by the thread locking assembly (7), the clamping assembly (9) moves to the right to form a clamping fit with the first slot member (5) and thus double clamps the insulating sheath; A linkage assembly (10) is used to coordinate the positions of the fastener (4) and the clamping assembly (9), and when the fastener (4) drops to the lowest position of the sliding groove, the linkage assembly (10) is coordinated to control the clamping assembly (9) to release the clamping; The fastener (4) comprises a movable block (41), a fixed member (42), and a movable member (43); the movable block (41) is slidably arranged in a sliding groove up and down; the fixed member (42) is fixedly installed on the lower left side of the movable block (41); the movable member (43) is slidably arranged on the upper left side of the movable block (41); the movable member (43) and the fixed member (42) corresponding to the upper and lower positions are locked in position by means of bolts; The second slot member (6) comprises a slot joint (61) and a movable rod (62), wherein the slot joint (61) is mounted on the right end of the movable rod (62), and the movable rod (62) is slidably disposed in the sliding slot. The thread locking assembly (7) comprises: A pressing block (71) is slidably disposed on the left side of the inner cavity of the movable rod (62) in an up-and-down manner, a connecting groove is provided inside the pressing block (71), and an alignment rod (72) is slidably disposed in the connecting groove in a left-and-right manner; An elastic telescopic rod (73) is arranged between the pressing block (71) and the bottom of the inner cavity of the movable rod (62); A resistance column (74) is slidably disposed at the bottom of the inner cavity of the movable rod (62) in an up-and-down manner. The lower end surface of the resistance column (74) squeezed by the pressing block (71) contacts the resistance layer (75) so as to lock the position between the movable rod (62) and the U-shaped main board (3). The resistance layer (75) is installed at the bottom of the sliding groove. A threaded column (76), the middle of which is connected to the upper end of the U-shaped main board (3) by means of threaded engagement, a handle is installed at the upper end of the threaded column (76), and the lower end of the threaded column (76) is connected to the pressing plate (77) via a bearing; An extrusion head (78) mounted on the upper right side of the pressing block (71); The clamping assembly (9) comprises: An injection guide rod (91) is slidably disposed in the middle of the inner cavity of the movable rod (62); An air intake rod (92), the left end of which is connected to the right end of the injection guide rod (91); A clamping plate (93) is mounted on the right end of the air inlet rod (92), and a clamping air bag (94) is provided on the right end of the clamping plate (93); The injection guide rod (91) comprises a rod body (911), an air cavity (912), a piston member (913), and an air hole (914); the rod body (911) is provided with an air cavity (912), a piston member (913) is slidably arranged in the air cavity (912), an air hole (914) is provided at the lower end of the piston member (913), and the positions of the rotating member (8), the alignment rod (72), and the piston member (913) correspond to each other; The air intake rod (92) comprises a connecting rod (921), a displacement rod (922) and a position correction member (923); the left end of the connecting rod (921) is connected to the right end of the rod body (911); the right end inclined surface of the connecting rod (921) and the left end inclined surface of the displacement rod (922) are connected in a sliding manner; the right end of the displacement rod (922) is connected to the clamping plate (93); and the front end side wall of the displacement rod (922) is fixedly connected to the position correction member (923); The linkage assembly (10) comprises a sliding frame (101) and an elastic telescopic member (102); an L-shaped groove is provided at the left end of the U-shaped main board (3); a sliding frame (101) is provided in the L-shaped groove for sliding back and forth; and an elastic telescopic member (102) is connected between the middle of the sliding frame (101) and the U-shaped main board (3); The upper end of the rear end side wall of the movable block (41) is provided with a built-in groove, and the front end of the sliding frame (101) corresponds to the position between the built-in groove, and the rear end lateral part of the sliding frame (101) is extruded and matched with the position correction member (923).

2. The insulating rod device for live installation of high and low voltage pile head insulating sheath of transformer according to claim 1 is characterized in that: The middle portion of the rotating member (8) is a threaded structure, and the middle portion of the rotating member (8) and the left end of the movable rod (62) are threadedly connected.

3. The insulating rod device for live installation of high and low voltage pile head insulating sheath of transformer according to claim 1 is characterized in that: The connecting rod (921) is provided with a cavity 1 (924), and the displacement rod (922) is provided with a cavity 2 (925). When the connecting rod (921) and the displacement rod (922) are aligned, the cavity 1 (924) and the cavity 2 (925) are in a connected state, and the right end inclined surface of the connecting rod (921) is a structure that gradually tilts backward from left to right.

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