Power transformer convenient to use

Abstract

The invention relates to the field of power transformers, in particular to a convenient-to-use power transformer which comprises an insulating baffle and a voltage transformer, a limiting sleeve shell is fixedly connected to the inner side wall face of the insulating baffle, and a motor and a first limiting rod are arranged on the bottom surface of the limiting sleeve shell and located on the edges of the two sides correspondingly; the output end of the motor is fixedly connected with a threaded lead screw, and the outer side surface of the threaded lead screw and the outer side surface of the first limiting rod are movably sleeved with a pushing block. The surface of a cable wire is clamped on the inner side wall surface of a pushing block, at the moment, a threaded rod is rotated, under thread drainage of a threaded sleeve, the threaded rod rotates on the surface of an extrusion arc plate and pushes the extrusion arc plate, and along with continuous penetration of the extrusion arc plate, the surface of the extrusion arc plate is attached to the outer side surface of the cable wire; and meanwhile, an anti-skid silica gel block in the pushing block is matched to increase the friction force between the cable wire and the surface of the cable wire, and the anti-skid performance is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power transformers, and more specifically, it is a power transformer that is convenient to use. Background Art

[0002] A transformer, also known as an instrument transformer, is a general term for current transformers and voltage transformers. It transforms high voltage into low voltage and large current into small current for measurement or protection systems. Its main function is to proportionally transform high voltage or large current into standard low voltage or standard small current to achieve the standardization and miniaturization of measuring instruments, protection equipment, and automatic control equipment. At the same time, the transformer can also be used to isolate the high voltage system to ensure the safety of personnel and equipment.

[0003] A patent with the publication number CN215069532U discloses a power transformer that is convenient to use, including a base. At both left and right ends of the upper end surface of the base, support plates are fixedly installed. On the opposite sides of the two support plates, screws penetrate and are movably connected. At the opposite ends of the two screws, moving rods are installed. On the upper end surfaces of the two moving rods, buffer cylinders are fixedly installed. By rotating the two screws, the two moving rods and the two buffer cylinders are pushed to move towards the transformer body, so that the two clamping plates move to clamp and fix the transformer body, thus achieving the effect of facilitating the installation of the transformer body. When the transformer body vibrates, the vibration generated by the transformer body can be alleviated by the two first springs, and the vibration generated by the transformer body is further alleviated by the cooperation of the second spring and the shock-absorbing block, thereby avoiding the occurrence of faults in the power transformer caused by vibration and extending its service life.

[0004] In the current prior art, most power transformers with high wire clamping strength in the prior art are not convenient for installation. Users need to spend a certain amount of time for operation, and the stability after installation cannot be guaranteed. The service life is relatively low, and it is difficult to meet multi-faceted requirements.

[0005] Therefore, the present invention provides a power transformer that is convenient to use. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A power transformer convenient to use according to the present invention includes an insulating baffle and a voltage transformer. A limiting sleeve is fixedly connected to the inner side wall surface of the insulating baffle. Motors and a first limiting rod are respectively arranged on the bottom surface of the limiting sleeve at both side edge positions. A threaded lead screw is fixedly connected to the output end of the motor. A pushing block is movably sleeved on the outer side surfaces of the threaded lead screw and the first limiting rod. An anti-slip silica gel block is fixedly connected to the inner side wall surface of the pushing block. An indentation groove is formed on the inner side wall surface of the pushing block at a position symmetrical to the anti-slip silica gel block. A threaded sleeve is fixedly connected to the outer side surface of the pushing block at a position on one side edge of the indentation groove. A threaded rod is threadedly and movably sleeved on the inner side wall surface of the threaded sleeve. One end of the threaded rod is movably sleeved on the inner side wall surface of the pushing block with an extrusion arc plate, and the outer side surface of the extrusion arc plate is movably sleeved on the inner side wall surface of the indentation groove.

[0008] Preferably, plug pin cylinders are fixedly installed on both side surfaces of the limiting sleeve. A docking cover is movably lapped on the outer side surface of the limiting sleeve. Plug pin rods are fixedly connected to both side surfaces of the docking cover. The outer side surfaces of the plug pin rods are movably sleeved on the inner side wall surfaces of the plug pin cylinders.

[0009] Preferably, locking catches are arranged on both side surfaces of the docking cover and the limiting sleeve. Anti-slip soft plates are fixedly connected to the inner side wall surfaces of the docking cover and the limiting sleeve.

[0010] Preferably, a docking threaded rod is fixedly connected to the outer side surface at the top of the insulating baffle. A threaded socket head is threadedly and movably sleeved on the output end of the docking threaded rod. A limiting collar is fixedly installed on the top surface of the insulating baffle at the bottom edge position of the docking threaded rod. A docking socket head is movably sleeved on the inner side wall surface of the limiting collar.

[0011] Preferably, a second limiting rod is arranged on the outer side surface of the voltage transformer. A cable wire is movably sleeved on the inner side wall surface of the limiting sleeve. One end of the cable wire is detachably installed on the inner side wall surface of the docking socket head.

[0012] Preferably, a counterweight swing arm is movably sleeved on the outer side surface of the second limiting rod. A lapping sleeve is movably sleeved on the outer side surface of the counterweight swing arm. Clamping grooves are formed on the outer side surfaces of the counterweight swing arm and the lapping sleeve. A plug pin is movably sleeved on the inner side wall surface of the clamping groove.

[0013] Preferably, a limiting sliding groove is formed on the outer surface of the voltage transformer. A closing door is movably sleeved on the inner side wall surface of the limiting sliding groove and the outer surface of the voltage transformer. The outer surface of the second limiting rod and the overlapping sleeve housing is fixedly installed on the outer surface of the closing door. A fixing block is fixedly connected to the bottom surface of the voltage transformer. Limiting sliding rods are fixedly connected to both side surfaces of the fixing block. The outer surface of the limiting sliding rod is movably sleeved on the bottom surface of the closing door.

[0014] Preferably, an exhaust pipe is fixedly installed on the inner top surface of the voltage transformer. An exhaust fan is fixedly installed on the inner side wall surface of the voltage transformer and at the bottom edge position of the exhaust pipe. The output end of the exhaust fan is fixedly connected to the bottom surface of the exhaust pipe. Spray pipes are fixedly connected to the bottom surface of the exhaust pipe and are arranged on both side surfaces of the docking socket head. A cable joint is fixedly installed on the inner side wall surface of the voltage transformer and is movably sleeved on the outer surface of the docking socket head.

[0015] The beneficial effects of the present invention are as follows: 1. For the convenient-to-use power transformer of the present invention, the surface of the cable wire is clamped on the inner side wall surface of the pushing block. At this time, the threaded rod is rotated, and under the threaded guiding of the threaded sleeve, the threaded rod rotates on the surface of the extrusion arc plate and pushes the extrusion arc plate. As the extrusion arc plate continuously penetrates, the surface of the extrusion arc plate fits on the outer surface of the cable wire and continuously extrudes the cable wire. At the same time, the anti-slip silica gel block inside the pushing block is used to increase the friction and anti-slip property with the surface of the cable wire, thereby reducing the dragging force and pulling force at other positions of the cable wire. At the same time, the pushing block is used to limit the height and position of the cable wire. 2. For the convenient-to-use power transformer of the present invention, while lifting the docking socket head, the docking socket head is passed through the inner side wall surface of the limiting sleeve ring. The position of the docking socket head is limited by the limiting sleeve ring, so that the output end of the docking socket head carrying the cable wire is in a vertically upward state. Under the limitation of the limiting sleeve ring, the cable wire is not easily bent, and the pulling force and dragging force between the docking socket head and the cable joint are reduced. 3. For the convenient-to-use power transformer of the present invention, after the cable wire is docked and positioned, the docking cover is sleeved on the outer surface of the limiting sleeve housing, and the insertion rod is docked on the inner side wall surface of the insertion cylinder to limit the moving direction of the docking cover, so that the docking cover moves horizontally. When the docking cover is completely sleeved on the outer surface of the limiting sleeve housing, the threaded sleeve head is rotated to continuously lock and compress the limiting sleeve housing and the docking cover. While the threaded sleeve head is locked, the anti-slip soft plates on the inner side wall surfaces of the limiting sleeve housing and the docking cover are compressed and deformed, thereby increasing the anti-slip property with the surface of the cable wire, and further achieving the effect of secondary limiting the position of the cable wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 is a perspective view of the present invention; Figure 2 is an exploded perspective view of the voltage transformer in the present invention; Figure 3 is a perspective view of the internal structure of the voltage transformer in the present invention; Figure 4 is a perspective view of the swinging of the counterweight swing arm in the present invention; Figure 5 is a perspective view of the insulating baffle in the present invention; Figure 6 is a sectional perspective view of the insulating baffle in the present invention; Figure 7 is an exploded perspective view of the insulating baffle in the present invention; Figure 8 is a sectional perspective view of the anti-slip silica gel block in the present invention.

[0018] In the figures: 11, voltage transformer; 111, limit chute; 112, exhaust fan; 113, exhaust pipe; 114, air injection pipe; 115, closing door; 116, fixing block; 117, limit slide bar; 118, cable joint; 12, insulating baffle; 121, limit sleeve; 122, docking socket; 123, docking threaded rod; 124, threaded socket; 125, limit housing; a1, motor; a2, first limit rod; a3, pushing block; a4, anti-slip silica gel block; a5, recessed groove; a6, threaded sleeve; a7, threaded rod; a8, extrusion arc plate; 126, pin barrel; 127, docking cover; 128, pin rod; 129, lock; 1210, anti-slip soft board; 13, second limit rod; 131, counterweight swing arm; 132, clamping groove; 133, overlapping housing; 134, pin; 14, cable wire. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0020] As Figure 2 and Figures 5 to 8As shown in the figure, a convenient-to-use power transformer of an embodiment of the present invention includes an insulating baffle 12 and a voltage transformer 11. A limiting sleeve 125 is fixedly connected to the inner wall surface of the insulating baffle 12. A motor a1 and a first limiting rod a2 are respectively arranged on the bottom surface of the limiting sleeve 125 and at both side edge positions. A threaded lead screw is fixedly connected to the output end of the motor a1. A pushing block a3 is movably sleeved on the outer surface of the threaded lead screw and the first limiting rod a2. An anti-slip silica gel block a4 is fixedly connected to the inner wall surface of the pushing block a3. An indentation groove a5 is formed on the inner wall surface of the pushing block a3 and at the symmetrical position of the anti-slip silica gel block a4. A threaded sleeve a6 is fixedly connected to the outer surface of the pushing block a3 and at one side edge position of the indentation groove a5. A threaded rod a7 is threadedly and movably sleeved on the inner wall surface of the threaded sleeve a6. One end of the threaded rod a7 is movably sleeved on the inner wall surface of the pushing block a3 with an extrusion arc plate a8, and the outer surface of the extrusion arc plate a8 is movably sleeved on the inner wall surface of the indentation groove a5. A cable wire 14 is movably sleeved on the inner wall surface of the limiting sleeve 125.

[0021] The surface of the cable wire 14 is clamped on the inner wall surface of the pushing block a3. At this time, the threaded rod a7 is rotated and under the threaded guidance of the threaded sleeve a6, the threaded rod a7 rotates on the surface of the extrusion arc plate a8 and pushes the extrusion arc plate a8. As the extrusion arc plate a8 continuously penetrates, the surface of the extrusion arc plate a8 fits on the outer surface of the cable wire 14 and continuously squeezes the cable wire 14. At the same time, the anti-slip silica gel block a4 inside the pushing block a3 is used to increase the friction and anti-slip property between the surface of the cable wire 14, thereby reducing the dragging force and pulling force at other positions of the cable wire 14. At the same time, the pushing block a3 is used to limit the height and position of the cable wire 14; When one end of the cable wire 14 is fixed, the motor a1 is used to rotate the threaded lead screw, so that the pushing block a3 moves upward on the surface of the threaded lead screw and the first limiting rod a2. When the pushing block a3 moves, the height of the cable wire 14 is lifted, and one end of the cable wire 14 is moved to a suitable position, eliminating the need for another employee to carry, lift and position the cable wire 14 when the cable wire 14 is installed by employees later.

[0022] Such as Figure 1 - Figure 3 and Figures 5 to 8As shown, on both side surfaces of the limit sleeve housing 125, there are pin cylinders 126 fixedly installed. On the outer surface of the limit sleeve housing 125, there is a docking cover 127 movably lapped. On both side surfaces of the docking cover 127, there are pin rods 128 fixedly connected. The outer surface of the pin rod 128 is movably sleeved on the inner wall surface of the pin cylinder 126. On both side surfaces of the docking cover 127 and the limit sleeve housing 125, there are latches 129. On the inner wall surfaces of the docking cover 127 and the limit sleeve housing 125, there are anti-slip soft plates 1210 fixedly connected. On the outer surface of the top of the insulating baffle 12, there is a docking threaded rod 123 fixedly connected. On the output end of the docking threaded rod 123, there is a threaded socket 124 threadedly and movably sleeved. On the top surface of the insulating baffle 12 and at the bottom edge position of the docking threaded rod 123, there is a limit sleeve ring 121 fixedly installed. On the inner wall surface of the limit sleeve ring 121, there is a docking socket 122 movably sleeved. On the inner wall surface of the voltage transformer 11, there is a cable connector 118 fixedly installed and movably sleeved on the outer surface of the docking socket 122.

[0023] Snap the docking socket 122 onto one end of the cable wire 14, and lap the cable wire 14 inside the push block a3. As the push block a3 is lifted, one end of the docking socket 122 is staggeredly butted with one end of the cable connector 118. Insert one end of the docking threaded rod 123 into the outer surface of the docking socket 122, and butt and squeeze one end of the threaded socket 124 with the output end of the docking threaded rod 123, firmly positioning the surfaces of the docking socket 122 and the cable connector 118 together, so that an integral effect is formed between the cable wire 14 and the cable connector 118. While lifting the docking socket 122, pass the docking socket 122 through the inner wall surface of the limit sleeve ring 121, and use the limit sleeve ring 121 to limit the position of the docking socket 122, so that the output end of the docking socket 122 carrying the cable wire 14 is in a vertically upward state. Under the limitation of the limit sleeve ring 121, the cable wire 14 is not easily bent, and the pulling force and dragging force between the docking socket 122 and the cable connector 118 are reduced. After the cable wire 14 is docked and positioned, sleeve the docking cover 127 on the outer surface of the limit sleeve housing 125, and dock the pin rod 128 on the inner wall surface of the pin cylinder 126 to limit the moving direction of the docking cover 127, so that the docking cover 127 moves horizontally. When the docking cover 127 is completely sleeved on the outer surface of the limit sleeve housing 125, rotate the threaded socket 124 to continuously lock and compress the limit sleeve housing 125 and the docking cover 127. While the threaded socket 124 is locked, cooperate with the anti-slip soft plates 1210 on the inner wall surfaces of the limit sleeve housing 125 and the docking cover 127 to be compressed and deformed, thereby increasing the anti-slip property with the surface of the cable wire 14, and further achieving the effect of secondarily limiting the position of the cable wire 14.

[0024] like Figures 1 to 4 As shown, a limit slide groove 111 is provided on the outer surface of the voltage transformer 11, and a closing door 115 is movably sleeved on the inner wall surface of the limit slide groove 111 and the outer surface of the voltage transformer 11, and the outer surface of the limit rod 13 and the overlapping sleeve 133 are fixedly installed on the outer surface of the closing door 115. A fixed block 116 is fixedly connected to the bottom surface of the voltage transformer 11, and a limit slide rod 117 is fixedly connected to the two side surfaces of the fixed block 116. The outer surface of the limit slide rod 117 is movably sleeved on the bottom surface of the closing door 115, and an exhaust pipe 113 is fixedly installed on the inner top surface of the voltage transformer 11. An exhaust fan 112 is fixedly installed on the inner wall surface of the voltage transformer 11 and located at the bottom edge position of the exhaust pipe 113, and the output end of the exhaust fan 112 is fixedly connected to the bottom surface of the exhaust pipe 113, and the bottom surface of the exhaust pipe 113 is fixedly connected with an air jet pipe 114 arranged on the two side surfaces of the docking sleeve 122.

[0025] After the cable wire 14 is installed, the position of the closing door 115 is limited by the limiting slide groove 111, so that the two groups of closing doors 115 are closed. During the movement of the closing door 115, the position of the closing door 115 is limited by the limiting slide rod 117, so that the closing door 115 moves horizontally on both sides. In daily use, the exhaust fan 112 is used to extract the hot air inside the voltage transformer 11 and quickly discharge the hot air. In rainy weather, the exhaust fan 112 is used to infuse the extracted hot air into the exhaust pipe 113, and the hot air is sprayed to the joint of the exhaust fan 112 through the jet pipe 114 on the outer surface of the exhaust pipe 113, so as to dry the exposed position of the surface of the cable wire 14. In a dry environment, the copper wire has relatively less contact with oxygen, the oxidation reaction is slow, and a thin layer of copper oxide is formed on the copper surface, and the oxide layer has little effect on the conductive performance.

[0026] like Figures 1 to 4 As shown, a limit rod 13 is provided on the outer surface of the voltage transformer 11, one end of the cable wire 14 is detachably mounted on the inner wall of the docking sleeve 122, a counterweight swing arm 131 is movably sleeved on the outer surface of the limit rod 13, a lap sleeve 133 is movably sleeved on the outer surface of the counterweight swing arm 131, a clamping groove 132 is provided on the outer surfaces of the counterweight swing arm 131 and the lap sleeve 133, and a pin 134 is movably sleeved on the inner wall of the clamping groove 132.

[0027] After the cable wire 14 is snap-fitted and installed, close the closing door 115. At this time, rotate the counterweight swing arm 131 so that the surface of the counterweight swing arm 131 is lapped on the inner wall surface of the lap housing 133. Due to the center of gravity at one end of the counterweight swing arm 131 being biased downward, the counterweight swing arm 131 can always hang down inside the lap housing 133. At this time, insert the bolt 134 through the snap-fitting groove 132 to firmly snap and position the counterweight swing arm 131 on the outer surface of the lap housing 133, thus restricting the position of the closing door 115.

[0028] Working principle: Snap the surface of the cable wire 14 on the inner wall surface of the push block a3. At this time, rotate the threaded rod a7, and under the thread guiding of the threaded sleeve a6, the threaded rod a7 rotates on the surface of the extrusion arc plate a8 and pushes the extrusion arc plate a8. As the extrusion arc plate a8 penetrates deeper, the surface of the extrusion arc plate a8 fits on the outer surface of the cable wire 14 and continuously squeezes the cable wire 14. At the same time, cooperate with the anti-slip silicone block a4 inside the push block a3 to increase the friction and anti-slip property with the surface of the cable wire 14, thereby reducing the dragging force and pulling force at other positions of the cable wire 14. At the same time, cooperate with the push block a3 to limit the height and position of the cable wire 14. Snap the docking sleeve head 122 onto one end of the cable wire 14 and lap the cable wire 14 inside the push block a3. As the push block a3 is lifted, one end of the docking sleeve head 122 is staggeredly docked with one end of the cable joint 118. Insert one end of the docking threaded rod 123 into the outer surface of the docking sleeve head 122, and dock and squeeze one end of the threaded sleeve head 124 with the output end of the docking threaded rod 123 to firmly position the surfaces of the docking sleeve head 122 and the cable joint 118 together, so that the cable wire 14 and the cable joint 118 form an integrated effect. While lifting the docking sleeve head 122, pass the docking sleeve head 122 through the inner wall surface of the limit collar 121. Use the limit collar 121 to limit the position of the docking sleeve head 122, so that the output end of the docking sleeve head 122 carrying the cable wire 14 is in a vertically upward state. Under the limitation of the limit collar 121, the cable wire 14 is not easily bent, and the pulling force and dragging force between the docking sleeve head 122 and the cable joint 118 are reduced. After the cable wire 14 is positioned for butt joint, the butt joint cover 127 is sleeved on the outer surface of the limit sleeve housing 125, and the pin rod 128 is butted against the inner wall surface of the pin cylinder 126 to limit the moving direction of the butt joint cover 127, so that the butt joint cover 127 moves horizontally. When the butt joint cover 127 is completely sleeved on the outer surface of the limit sleeve housing 125, the threaded sleeve head 124 is rotated to continuously lock and compress the limit sleeve housing 125 and the butt joint cover 127. While the threaded sleeve head 124 is being locked, the anti-slip soft plates 1210 on the inner wall surfaces of the limit sleeve housing 125 and the butt joint cover 127 are compressed and deformed, thereby increasing the anti-slip property between the surfaces of the cable wire 14, and further achieving the effect of secondarily limiting the position of the cable wire 14.

[0029] The foregoing has shown and described 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 by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A convenient power transformer, comprising an insulating baffle (12) and a voltage transformer (11), characterized in that: A limiting sleeve (125) is fixedly connected to the inner wall surface of the insulating baffle (12); a motor (a1) and a limiting rod (a2) are respectively arranged on the bottom surface and at the edge positions on both sides of the limiting sleeve (125); a threaded screw is fixedly connected to the output end of the motor (a1); a push block (a3) ​​is movably sleeved on the outer surfaces of the threaded screw and the limiting rod (a2); an anti-slip silicone block (a4) is fixedly connected to the inner wall surface of the pushing block (a3); and the inner wall surface of the pushing block (a3) ​​is A sunken groove (a5) is provided at a symmetrical position of the anti-slip silicone block (a4); a threaded sleeve (a6) is fixedly connected to the outer surface of the push block (a3) ​​and located at a side edge position of the sunken groove (a5); a threaded rod (a7) is movably sleeved on the inner wall surface of the threaded sleeve (a6); an extrusion arc plate (a8) is movably sleeved on one end of the threaded rod (a7) and located on the inner wall surface of the push block (a3); and the outer surface of the extrusion arc plate (a8) is movably sleeved on the inner wall surface of the sunken groove (a5).

2. A convenient-to-use power transformer according to claim 1, characterized in that: A latch barrel (126) is fixedly mounted on both side surfaces of the limiting sleeve (125), a docking cover (127) is movably overlapped on the outer side surface of the limiting sleeve (125), a latch rod (128) is fixedly connected to both side surfaces of the docking cover (127), and the outer side surface of the latch rod (128) is movably sleeved on the inner side wall of the latch barrel (126).

3. A convenient-to-use power transformer according to claim 2, characterized in that: Lock buckles (129) are provided on both side surfaces of the docking cover (127) and the limiting sleeve (125), and anti-skid soft plates (1210) are fixedly connected to the inner side wall surfaces of the docking cover (127) and the limiting sleeve (125).

4. A convenient-to-use power transformer according to claim 3, characterized in that: A butt-jointed threaded rod (123) is fixedly connected to the outer surface of the top of the insulating baffle (12); a threaded sleeve (124) is movably sleeved on the output end of the butt-jointed threaded rod (123); a limiting collar (121) is fixedly mounted on the top surface of the insulating baffle (12) and at the bottom edge of the butt-jointed threaded rod (123); a butt-jointed sleeve (122) is movably sleeved on the inner wall surface of the limiting collar (121).

5. A convenient-to-use power transformer according to claim 2, characterized in that: A second limit rod (13) is provided on the outer surface of the voltage transformer (11), a cable wire (14) is movably sleeved on the inner wall surface of the limit sleeve (125), and one end of the cable wire (14) is detachably mounted on the inner wall surface of the docking sleeve (122).

6. A convenient-to-use power transformer according to claim 5, characterized in that: A counterweight swing arm (131) is movably sleeved on the outer surface of the second limiting rod (13), and a lap sleeve (133) is movably sleeved on the outer surface of the counterweight swing arm (131). A clamping groove (132) is provided on the outer surfaces of the counterweight swing arm (131) and the lap sleeve (133), and a latch pin (134) is movably sleeved on the inner wall surface of the clamping groove (132).

7. A convenient-to-use power transformer according to claim 6, characterized in that: A limit slide groove (111) is provided on the outer surface of the voltage transformer (11); a closing door (115) is movably sleeved on the inner wall surface of the limit slide groove (111) and the outer surface of the voltage transformer (11); the outer surfaces of the second limit rod (13) and the overlapping sleeve (133) are fixedly mounted on the outer surface of the closing door (115); a fixing block (116) is fixedly connected to the bottom surface of the voltage transformer (11); a limit slide rod (117) is fixedly connected to the two side surfaces of the fixing block (116); and the outer surface of the limit slide rod (117) is movably sleeved on the bottom surface of the closing door (115).

8. A convenient-to-use power transformer according to claim 7, characterized in that: An exhaust pipe (113) is fixedly mounted on the inner top surface of the voltage transformer (11); an exhaust fan (112) is fixedly mounted on the inner wall surface of the voltage transformer (11) and located at the bottom edge of the exhaust pipe (113); an output end of the exhaust fan (112) is fixedly connected to the bottom surface of the exhaust pipe (113); an air injection pipe (114) arranged on both side surfaces of a docking sleeve (122) is fixedly connected to the bottom surface of the exhaust pipe (113); and a cable connector (118) movably sleeved on the outer surface of the docking sleeve (122) is fixedly mounted on the inner wall surface of the voltage transformer (11).

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