Auxiliary tool for replacing primary fuse on voltage transformer

Abstract

The invention belongs to the technical field of fuse replacement tools, and particularly relates to an auxiliary tool for replacing a primary fuse on a voltage transformer. Comprising two parallel main body side plates, long guide plates are arranged at the top ends of the main body side plates, an upper clamping and fixing part is slidably connected between the two long guide plates, and the upper clamping and fixing part comprises two oppositely-arranged clamping and fixing arc rods; an upper clamping adjusting unit is arranged on the guide long plate, the end of the clamping fixing arc rod is detachably connected with the upper clamping adjusting unit, a lower clamping fixing part is slidably connected between the lower portions of the two main body side plates, and the lower clamping fixing part comprises two oppositely-arranged clamping fixing bent rods; a lower clamping adjusting unit is arranged on the lower portion of the main body side plate and connected with the end of the clamping and fixing bent rod. The device can effectively assist a worker in replacing the primary fuse on the voltage transformer, the operation intensity is reduced, and the operation stability and efficiency are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fuse replacement tools, and in particular relates to an auxiliary tool for replacing a fuse on a voltage transformer. Background Art

[0002] A voltage transformer is an electrical device used to transform voltage. It is mainly used in power systems to reduce high voltage to low voltage for measurement, protection and control. Compared with transformers, voltage transformers have a smaller capacity, generally only a few volt-amperes to tens of volt-amperes, and a maximum of no more than one thousand volt-amperes. They are mainly used to power measuring instruments and relay protection devices, or to protect valuable equipment, motors and transformers in the line when a line fault occurs. The basic structure of a voltage transformer is similar to that of a transformer, and is mainly composed of a high-voltage winding, a low-voltage winding and a magnetic core. The high-voltage winding is connected in parallel to the line, and the low-voltage winding is connected in parallel to the instrument or relay. When current passes through the high-voltage winding, a magnetic field is generated in the winding, which passes through the magnetic core and is induced into the low-voltage winding, thereby generating a lower voltage in the low-voltage winding. Voltage transformers are widely used in power systems, railway systems, industrial automation control, power testing and other fields. In power systems, it is used for voltage measurement and protection of power equipment such as high-voltage transmission lines, substations, switchgear and generators. A fuse is a protective device that uses the heat generated by itself to melt the fuse when the current exceeds the specified value, thereby disconnecting the circuit. In a voltage transformer, the fuse is mainly used to protect the voltage transformer from damage caused by short circuit or overload current. When the voltage transformer has the following faults, the primary fuse inside it will melt to protect it: when the system has a single-phase intermittent arc grounding, causing the ferromagnetic resonance of the voltage transformer; the fuse has been in operation for a long time and has naturally aged and melted; a single-phase grounding or interphase short circuit fault occurs inside the voltage transformer body; a short circuit occurs on the secondary side and the secondary side fuse does not melt, causing the high-voltage fuse to melt; it has been struck by lightning; after the last fuse of the voltage transformer melts, in order to restore it to normal operation, it is necessary to replace the fuse; therefore, it is necessary to provide an auxiliary tool for replacing the last fuse of the voltage transformer. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide an auxiliary tool for replacing a fuse on a voltage transformer, which can effectively assist workers in replacing a fuse on a voltage transformer, reduce work intensity, and improve work stability and efficiency.

[0004] The object of the present invention is achieved as follows: an auxiliary tool for replacing a fuse on a voltage transformer, comprising two parallel main body side plates, a guide long plate is arranged at the top of the main body side plate, an upper clamping and fixing part is slidably connected between the two guide long plates, the upper clamping and fixing part comprises two clamping and fixing arc rods arranged opposite to each other, and the upper clamping and fixing part clamps and fixes the fuse sleeve of the voltage transformer through the cooperation of the two clamping and fixing arc rods; The guide long plate is provided with an upper clamping adjustment unit, the ends of the clamping and fixing arc rods are detachably connected to the upper clamping adjustment unit, and the upper clamping adjustment unit is used to drive the two clamping and fixing arc rods to move toward or away from each other; A lower clamping and fixing part is slidably connected between the lower parts of the two main body side plates, and the lower clamping and fixing part includes two clamping and fixing bending rods arranged opposite to each other, and the lower clamping and fixing part clamps and fixes the base of the voltage transformer through the cooperation of the two clamping and fixing bending rods; A lower clamping adjustment unit is arranged on the lower part of the main body side plate, and the lower clamping adjustment unit is connected to the end of the clamping fixed bending rod, and the lower clamping adjustment unit is used to drive the two clamping fixed bending rods to move toward or away from each other.

[0005] Furthermore, the upper clamping adjustment unit includes a guide slide plate slidably arranged in the guide long plate, and the side of the guide long plate is provided with a side guide groove, and the guide slide plate extends into the side guide groove and is slidably connected with the guide long plate; the end of the clamping and fixing arc rod is connected to the guide slide plate; the position of the clamping and fixing arc rod can be adjusted by moving the position of the guide slide plate in the side guide groove.

[0006] Furthermore, an upper guide groove is provided on the top surface of the guide long plate, and a connecting clamp seat is connected to the top of the guide slide plate. The upper part of the connecting clamp seat passes through the upper guide groove and is connected with the guide long plate through sliding cooperation therewith; the guide slide plate can be driven to move in the side guide groove by moving the connecting clamp seat, thereby adjusting the position of the clamped fixed arc rod.

[0007] Furthermore, supporting uprights are fixedly provided at both ends of the top surface of the guide long plate, a first adjusting screw is rotatably provided between the two supporting uprights, the first adjusting screw is threadedly connected to the adjusting upright, and the bottom of the adjusting upright is connected to the connecting clamp seat; the position of the clamped fixed arc rod can be adjusted by rotating the first adjusting screw, and the operation is convenient, fast, stable and efficient.

[0008] Furthermore, a rotating seat is provided on the side surface of the supporting upright plate, and the first adjusting screw is rotatably connected to the supporting upright plate through the rotating seat.

[0009] Furthermore, one end of the first adjusting screw passes through the corresponding supporting vertical plate and is connected to an adjusting end plate, and the adjusting end plate is connected to an adjusting rotating rod, and a rotating handle is rotatably provided on the adjusting rotating rod; the adjusting rotating rod can be rotated by the rotating handle to achieve adjustment of the position of the clamped fixed arc rod, and the operation is convenient, fast, stable and efficient.

[0010] Furthermore, a connecting socket is provided on the side of the guide slide plate, and a connecting rod adapted to the connecting socket is provided at the end of the clamping and fixing arc rod; a locking seat is provided on the connecting socket, and a locking screw is threadedly connected to the locking seat; the clamping and fixing arc rod can be detachably connected to the upper clamping adjustment unit by inserting the connecting rod into the connecting socket.

[0011] Furthermore, the lower clamping adjustment unit includes a second adjusting screw rotatably arranged in the lower part of the main body side plate, and a lower guide groove is also arranged in the lower part of the main body side plate. The end of the clamping and fixed bending rod extends into the lower guide groove and is slidably connected therewith, and the second adjusting screw passes through the lower guide groove and is threadedly connected to the end of the clamping and fixed bending rod; the two clamping and fixed bending rods can be driven to move toward or away from each other by rotating the second adjusting screw.

[0012] Furthermore, the end of the clamping and fixing bending rod extends out of the lower guide groove and is connected to a limiting guide plate, and one end of the second adjusting screw extends out of the main body side plate and is connected to an adjusting knob; the clamping and fixing bending rod can be limited and guided by the limiting guide plate.

[0013] Furthermore, the main body of the clamping and fixing bending rod is U-shaped, and an elastic clamping plate is arranged on the side surface of the middle part of the clamping and fixing bending rod.

[0014] Beneficial effects of the present invention: The present invention is an auxiliary tool for replacing a fuse on a voltage transformer, the upper clamping and fixing part includes two clamping and fixing arc rods arranged opposite to each other, the two clamping and fixing arc rods cooperate to clamp and fix the fuse sleeve of the voltage transformer, and the upper clamping adjustment unit can drive the two clamping and fixing arc rods to move toward or away from each other; the lower clamping and fixing part can clamp and fix the base of the voltage transformer through the cooperation of the two clamping and fixing bending rods, and the lower clamping adjustment unit can drive the two clamping and fixing bending rods to move toward or away from each other. When using the primary fuse replacement auxiliary tool of the present invention, according to the size of the fuse sleeve of the voltage transformer to be replaced, the clamping and fixing arc rod matching the size is selected, the clamping and fixing arc rod is connected to the upper clamping adjustment unit, and the initial spacing of the two clamping and fixing arc rods and the initial spacing of the two clamping and fixing bent rods are adjusted by the upper clamping adjustment unit and the lower clamping adjustment unit respectively, the primary fuse replacement auxiliary tool of the present invention is sleeved from top to bottom on the outside of the voltage transformer, and then the two clamping and fixing bent rods are adjusted by the lower clamping adjustment unit. The spacing between the rods enables it to clamp and fix the base of the voltage transformer, and the spacing between the two clamping and fixing arc rods is adjusted by the upper clamping adjustment unit to clamp and fix the fuse bushing of the voltage transformer, after which the fuse can be replaced, which can effectively ensure the stability of each component during the replacement process and improve the replacement efficiency. An auxiliary tool for replacing a fuse on a voltage transformer of the present invention has a reasonable structure and is easy to operate and use. It can effectively assist staff in performing a replacement operation of a fuse on a voltage transformer, reduce work intensity, and improve work stability and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 The present invention is a three-dimensional structural schematic diagram of an auxiliary tool for replacing a fuse on a voltage transformer.

[0017] Figure 2 The present invention is a front view structural schematic diagram of an auxiliary tool for replacing a fuse on a voltage transformer.

[0018] Figure 3 The figure is a top view structural schematic diagram of an auxiliary tool used for replacing a fuse on a voltage transformer.

[0019] Figure 4 The figure is a side view structural schematic diagram of an auxiliary tool for replacing a fuse on a voltage transformer.

[0020] Figure 5 The present invention is a structural schematic diagram of the connection of the clamping and fixing part on an auxiliary tool used for primary fuse replacement on a voltage transformer.

[0021] Figure 6 The present invention is a structural schematic diagram of an auxiliary tool for adjusting the rotating rod connection for primary fuse replacement on a voltage transformer.

[0022] Figure 7 The present invention is a structural schematic diagram of a socket connection for an auxiliary tool used for primary fuse replacement on a voltage transformer.

[0023] Figure 8 The present invention is a schematic structural diagram of a cross-section of a clamping adjustment unit on an auxiliary tool for replacing a primary fuse on a voltage transformer.

[0024] Fig. 9 The present invention is a structural schematic diagram of the connection of the lower clamping and fixing part of an auxiliary tool used for replacing a fuse on a voltage transformer. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0029] like Figure 1-9As shown, an auxiliary tool for replacing a fuse on a voltage transformer of the present invention comprises two parallel main body side plates 1, a guide long plate 2 is arranged at the top of the main body side plate 1, an upper clamping and fixing portion 3 is slidably connected between the two guide long plates 2, the upper clamping and fixing portion 3 comprises two clamping and fixing arc rods 15 arranged opposite to each other, and the upper clamping and fixing portion 3 clamps and fixes the fuse bushing of the voltage transformer through the cooperation of the two clamping and fixing arc rods 15; The guide long plate 2 is provided with an upper clamping adjustment unit 4, and the ends of the clamping and fixing arc rods 15 are detachably connected to the upper clamping and adjustment unit 4, and the upper clamping and adjustment unit 4 is used to drive the two clamping and fixing arc rods 15 to move toward or away from each other; A lower clamping and fixing part 5 is slidably connected between the lower parts of the two main body side plates 1, and the lower clamping and fixing part 5 includes two clamping and fixing bending rods 23 arranged opposite to each other. The lower clamping and fixing part 5 clamps and fixes the base of the voltage transformer through the cooperation of the two clamping and fixing bending rods 23; A lower clamping adjustment unit 6 is provided on the lower portion of the main body side plate 1 , and the lower clamping adjustment unit 6 is connected to the end of the clamping fixed bending rod 23 , and the lower clamping adjustment unit 6 is used to drive the two clamping fixed bending rods 23 to move toward or away from each other.

[0030] When using the primary fuse replacement auxiliary tool of the present invention, according to the size of the fuse sleeve of the voltage transformer to be replaced, the clamping and fixing arc rod 15 that matches it is selected, and the clamping and fixing arc rod 15 is connected to the upper clamping adjustment unit 4. The initial spacing of the two clamping and fixing arc rods 15 and the initial spacing of the two clamping and fixing bent rods 23 are adjusted by the upper clamping adjustment unit 4 and the lower clamping adjustment unit 6 respectively. The primary fuse replacement auxiliary tool of the present invention is mounted on the outside of the voltage transformer from top to bottom, and then the spacing between the two clamping and fixing bent rods 23 is adjusted by the lower clamping adjustment unit 6 so that the base of the voltage transformer is clamped and fixed. The spacing between the two clamping and fixing arc rods 15 is adjusted by the upper clamping adjustment unit 4 to clamp and fix the fuse sleeve of the voltage transformer. After that, the fuse can be replaced, which can effectively ensure the stability of each component during the replacement process and improve the replacement efficiency.

[0031] Furthermore, in one embodiment, the upper clamping adjustment unit 4 includes a guide slide 12 slidably arranged in the guide long plate 2, and a side guide groove 16 is arranged on the side of the guide long plate 2, and the guide slide 12 extends into the side guide groove 16 and is slidably connected with the guide long plate 2; the end of the clamping and fixing arc rod 15 is connected to the guide slide 12; the position of the clamping and fixing arc rod 15 can be adjusted by moving the position of the guide slide 12 in the side guide groove 16, thereby controlling the distance between the two clamping and fixing arc rods 15, so as to clamp and fix the fuse bushing of the voltage transformer, and the operation is convenient, fast, stable and efficient.

[0032] Furthermore, in one embodiment, an upper guide groove 11 is provided on the top surface of the guide long plate 2, and a connecting clamp seat 13 is connected to the top of the guide slide plate 12, and the upper part of the connecting clamp seat 13 passes through the upper guide groove 11 and is connected to the guide long plate 2 by sliding cooperation therewith; the connecting clamp seat 13 can be moved to drive the guide slide plate 12 to move in the side guide groove 16, thereby adjusting the position of the clamping and fixing arc rod 15, thereby controlling the distance between the two clamping and fixing arc rods 15, so as to clamp and fix the fuse bushing of the voltage transformer, and the operation is convenient, fast, stable and efficient.

[0033] Furthermore, in one embodiment, support vertical plates 7 are fixedly provided at both ends of the top surface of the guide long plate 2, and a first adjusting screw 8 is rotatably provided between the two support vertical plates 7, and the first adjusting screw 8 is threadedly connected to the adjusting vertical plate 10, and the bottom of the adjusting vertical plate 10 is connected to the connecting clamp seat 13; the position of the clamping and fixing arc rod 15 can be adjusted by rotating the first adjusting screw 8, and the operation is convenient, fast, stable and efficient; specifically, when the first adjusting screw 8 is rotated, it drives the adjusting vertical plate 10 to move left and right, thereby driving the guide slide plate 12 to move in the side guide groove 16 through the connecting clamp seat 13, so as to adjust the distance between the two clamping and fixing arc rods 15, so as to clamp and fix the fuse sleeve of the voltage transformer.

[0034] Furthermore, in one embodiment, a rotating seat 9 is provided on the side of the supporting upright plate 7, and the first adjusting screw 8 is rotatably connected to the supporting upright plate 7 through the rotating seat 9; the structure is simple and reasonable, ensuring the stability of the first adjusting screw 8 during operation.

[0035] Furthermore, in one embodiment, one end of the first adjusting screw 8 passes through the corresponding supporting vertical plate 7 and is connected to an adjusting end plate 17, and the adjusting end plate 17 is connected to an adjusting rotating rod 18, and a rotating handle 19 is rotatably provided on the adjusting rotating rod 18; the adjusting rotating rod 18 can be rotated by the rotating handle 19 to achieve adjustment of the position of the clamped and fixed arc rod 15, and the operation is convenient, fast, stable and efficient; specifically, when the adjusting rotating rod 18 is rotated by the rotating handle 19, the first adjusting screw 8 will be driven to rotate, and the first adjusting screw 8 will drive the adjusting vertical plate 10 to move left and right, thereby driving the guide slide plate 12 to move in the side guide groove 16 through the connecting clamp seat 13, so as to adjust the distance between the two clamped and fixed arc rods 15, so as to achieve clamping and fixing of the fuse sleeve of the voltage transformer.

[0036] Furthermore, in one embodiment, a connecting socket 14 is provided on the side of the guide slide plate 12, and a connecting plug 22 adapted to the connecting socket 14 is provided at the end of the clamping and fixing arc rod 15; a locking socket 21 is provided on the connecting socket 14, and a locking screw 20 is threadedly connected to the locking socket 21; the connecting plug 22 can be inserted into the connecting socket 14 to realize the detachable connection between the clamping and fixing arc rod 15 and the upper clamping and adjusting unit 4, which is convenient for replacing the corresponding clamping and fixing arc rod 15 according to voltage transformers of different models and sizes, and the operation is convenient and quick, and the adaptability is strong.

[0037] Furthermore, in one embodiment, the lower clamping adjustment unit 6 includes a second adjusting screw 25 rotatably arranged in the lower part of the main body side panel 1, and a lower guide groove 27 is also arranged in the lower part of the main body side panel 1. The end of the clamping and fixing bending rod 23 extends into the lower guide groove 27 and is slidably connected therewith, and the second adjusting screw 25 passes through the lower guide groove 27 and is threadedly connected to the end of the clamping and fixing bending rod 23; the two clamping and fixing bending rods 23 can be driven to move toward or away from each other by rotating the second adjusting screw 25 to clamp and fix the base of the voltage transformer, which is convenient, fast, stable and efficient to operate.

[0038] Furthermore, in one embodiment, the end of the clamping and fixing bending rod 23 extends out of the lower guide groove 27 and is connected to a limiting guide plate 28, and one end of the second adjusting screw 25 extends out of the main body side panel 1 and is connected to an adjusting knob 26; the clamping and fixing bending rod 23 can be limited and guided by the limiting guide plate 28 to further ensure its stability during movement; the second adjusting screw 25 can be operated by the adjusting knob 26, which is convenient and quick.

[0039] Furthermore, in one embodiment, the main body of the clamping and fixing bending rod 23 is U-shaped, and an elastic clamp 24 is provided on the side of the middle part of the clamping and fixing bending rod 23; the elastic clamp 24 can be used to clamp the voltage transformer base to ensure sufficient friction while avoiding damage caused by rigid contact.

[0040] In summary, the present invention is an auxiliary tool for replacing a fuse on a voltage transformer, the upper clamping and fixing part 3 includes two clamping and fixing arc rods 15 arranged opposite to each other, the two clamping and fixing arc rods 15 cooperate to clamp and fix the fuse sleeve of the voltage transformer, and the upper clamping adjustment unit 4 can drive the two clamping and fixing arc rods 15 to move toward or away from each other; the lower clamping and fixing part 5 can clamp and fix the base of the voltage transformer through the cooperation of the two clamping and fixing bending rods 23, and the lower clamping adjustment unit 6 can drive the two clamping and fixing bending rods 23 to move toward or away from each other. When using the primary fuse replacement auxiliary tool of the present invention, according to the size of the fuse sleeve of the voltage transformer to be replaced, the clamping and fixing arc rod 15 matching therewith is selected, the clamping and fixing arc rod 15 is connected to the upper clamping adjustment unit 4, and the initial spacing of the two clamping and fixing arc rods 15 and the initial spacing of the two clamping and fixing bending rods 23 are adjusted by the upper clamping adjustment unit 4 and the lower clamping adjustment unit 6 respectively, the primary fuse replacement auxiliary tool of the present invention is sleeved from top to bottom on the outside of the voltage transformer, and then the two clamping and fixing arc rods 23 are adjusted by the lower clamping adjustment unit 6. The spacing between the fixed bending rods 23 is used to clamp and fix the base of the voltage transformer. The spacing between the two clamping and fixing arc rods 15 is adjusted by the upper clamping adjustment unit 4 to clamp and fix the fuse bushing of the voltage transformer. The fuse can then be replaced, which can effectively ensure the stability of each component during the replacement process and improve the replacement efficiency. The auxiliary tool for replacing the last fuse of a voltage transformer of the present invention has a reasonable structure and is easy to operate and use. It can effectively assist the staff in performing the replacement operation of the last fuse of the voltage transformer, reduce the work intensity, and improve the work stability and efficiency.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An auxiliary tool for replacing a fuse on a voltage transformer, characterized in that: The invention comprises two parallel main body side plates (1), the top of the main body side plates (1) being provided with a guide long plate (2), an upper clamping and fixing portion (3) being slidably connected between the two guide long plates (2), the upper clamping and fixing portion (3) comprising two clamping and fixing arc rods (15) arranged opposite to each other, and the upper clamping and fixing portion (3) clamps and fixes the fuse bushing of the voltage transformer through the cooperation of the two clamping and fixing arc rods (15); An upper clamping adjustment unit (4) is provided on the guide long plate (2), and the ends of the clamping and fixing arc rods (15) are detachably connected to the upper clamping and adjusting unit (4), and the upper clamping and adjusting unit (4) is used to drive the two clamping and fixing arc rods (15) to move towards or away from each other; A lower clamping and fixing portion (5) is slidably connected between the lower portions of the two main body side plates (1), the lower clamping and fixing portion (5) comprising two clamping and fixing bent rods (23) arranged opposite to each other, the lower clamping and fixing portion (5) clamps and fixes the base of the voltage transformer through the cooperation of the two clamping and fixing bent rods (23); A lower clamping adjustment unit (6) is provided on the lower part of the main body side plate (1), and the lower clamping adjustment unit (6) is connected to the end of the clamping fixed bending rod (23), and the lower clamping adjustment unit (6) is used to drive the two clamping fixed bending rods (23) to move towards or away from each other.

2. An auxiliary tool for primary fuse replacement of a voltage transformer as claimed in claim 1, characterized in that: The upper clamping adjustment unit (4) comprises a guide slide plate (12) slidably arranged in the guide long plate (2); a side guide groove (16) is arranged on the side of the guide long plate (2); the guide slide plate (12) extends into the side guide groove (16) and is slidably connected to the guide long plate (2); the end of the clamping fixed arc rod (15) is connected to the guide slide plate (12).

3. An auxiliary tool for primary fuse replacement of a voltage transformer as claimed in claim 2, characterized in that: An upper guide groove (11) is provided on the top surface of the guide long plate (2), a connecting clamp seat (13) is connected to the top of the guide slide plate (12), and the upper part of the connecting clamp seat (13) passes through the upper guide groove (11) and is connected to the guide long plate (2) by means of a sliding fit.

4. An auxiliary tool for primary fuse replacement of a voltage transformer as claimed in claim 3, characterized in that: Support upright plates (7) are fixedly arranged at both ends of the top surface of the guide long plate (2), a first adjustment screw (8) is rotatably arranged between the two support upright plates (7), the first adjustment screw (8) is threadedly connected to the adjustment upright plate (10), and the bottom of the adjustment upright plate (10) is connected to the connecting clamp seat (13).

5. An auxiliary tool for primary fuse replacement of a voltage transformer as claimed in claim 4, characterized in that: A rotating seat (9) is provided on the side surface of the supporting upright plate (7), and the first adjusting screw (8) is rotatably connected to the supporting upright plate (7) via the rotating seat (9).

6. An auxiliary tool for primary fuse replacement of a voltage transformer as claimed in claim 4, characterized in that: One end of the first adjusting screw rod (8) passes through the corresponding supporting vertical plate (7) and is connected to an adjusting end plate (17); the adjusting end plate (17) is connected to an adjusting rotating rod (18); and a rotating handle (19) is rotatably provided on the adjusting rotating rod (18).

7. An auxiliary tool for primary fuse replacement of a voltage transformer as claimed in claim 2, characterized in that: A connecting socket (14) is provided on the side of the guide slide plate (12), and a connecting plug rod (22) adapted to the connecting socket (14) is provided at the end of the clamping and fixing arc rod (15); a locking socket (21) is provided on the connecting socket (14), and a locking screw (20) is threadedly connected to the locking socket (21).

8. An auxiliary tool for primary fuse replacement of a voltage transformer as claimed in claim 1, characterized in that: The lower clamping adjustment unit (6) comprises a second adjustment screw (25) rotatably arranged in the lower part of the main body side plate (1); a lower guide groove (27) is also arranged in the lower part of the main body side plate (1); the end of the clamping and fixing bending rod (23) extends into the lower guide groove (27) and is slidably connected thereto; the second adjustment screw (25) passes through the lower guide groove (27) and is threadedly connected to the end of the clamping and fixing bending rod (23).

9. An auxiliary tool for primary fuse replacement of a voltage transformer as claimed in claim 8, characterized in that: The end of the clamping and fixing bending rod (23) extends out of the lower guide groove (27) and is connected to a limit guide plate (28), and one end of the second adjusting screw rod (25) extends out of the main body side plate (1) and is connected to an adjusting knob (26).

10. An auxiliary tool for primary fuse replacement of a voltage transformer as claimed in claim 1, characterized in that: The main body of the clamping and fixing bending rod (23) is U-shaped, and an elastic clamping plate (24) is provided on the side surface of the middle part of the clamping and fixing bending rod (23).

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