A distribution box for electric power engineering

Abstract

The invention relates to the technical field of electric power engineering application, and discloses a distribution box for electric power engineering, comprising an electric meter box, an electromagnetic component, a shunt component, a current conversion component and a variable component, wherein the electric meter box is used to protect and install its internal components, the electromagnetic component is used to convert a current signal into a magnetic signal, the shunt component is used to shunt the current, the current conversion component is used to change the current, the variable component adjusts the current through mechanical interference, the electromagnetic component converts the current signal into a magnetic signal according to the magnitude of the current, the resistance of the main circuit is adjusted through the shunt component and the current conversion component to reduce the current, and the variable component is set to trigger the connection of the parallel current circuit when the current is large to shunt the current of the main circuit so as to protect the circuit, thereby realizing automatic graded regulation and stepless regulation of the current, and corresponding mechanical interference can be made according to the magnitude of the current to regulate the current and protect the circuit.

Description

Technical Field

[0001] The invention relates to the technical field of power engineering application, in particular to a distribution box for power engineering. Background Art

[0002] The distribution box is small in size, easy to install, has special technical performance, fixed position, unique configuration function, is not restricted by the site, is widely used, has stable and reliable operation, high space utilization, occupies a small area and has environmental protection effects. It is the control center that directs the reasonable distribution of electric energy of various components in the power supply line, is the control link that reliably receives the upper power supply and correctly feeds out the load electric energy, and is also the key to obtaining the user's satisfaction with the power supply quality.

[0003] At present, when the main power supply cable of the distribution box is working, due to the large current inside the main power supply cable, it is easy to generate electric sparks through the external relay contact overlap for shunting and regulation, resulting in damage to the joint. Therefore, when the current is large and overload is generated, the power supply of the distribution box is usually cut off directly to prevent accidents. However, this direct power cut-off operation will damage electrical components. In order to enable the distribution box to perform automatic grading and stepless control according to current changes when working, it is urgent to invent a distribution box for power engineering to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a distribution box for electric power engineering.

[0005] To achieve the above-mentioned solution, the present invention provides the following technical solutions: a distribution box for electric power engineering, comprising an electric meter box, an electromagnetic component, a shunt component, a converter component and a variable component, the electric meter box is used to protect and install its internal components, the electromagnetic component is used to convert current signals into magnetic signals, the shunt component is used to shunt current, the converter component is used to change current, and the variable component adjusts current through mechanical interference, and the electromagnetic component, shunt component, converter component and variable component are installed in the electric meter box.

[0006] Preferably, the electromagnetic assembly includes a first insulating sleeve, an electromagnetic coil is installed on the outside of the first insulating sleeve, and an iron core is movably installed inside the first insulating sleeve.

[0007] Preferably, the shunt assembly includes a shunt resistor box, a second insulating sleeve is provided in the middle of the shunt resistor box, a variable block is provided inside the second insulating sleeve, and first connecting rods are movably installed on both sides of the variable block.

[0008] Preferably, the converter assembly includes an insulating connecting sleeve, a second connecting rod and a third connecting rod, a third insulating sleeve is arranged inside the insulating connecting sleeve, a gear groove is opened inside the third insulating sleeve, a rheostat is arranged inside the third insulating sleeve, a connecting wire is connected to the rheostat, the second connecting rod is movably connected to the first connecting rod, a third limit block is fixedly installed at one end of the second connecting rod, the third limit block is located between the first connecting rod and the variable block and can move back and forth, a fourth limit block is fixedly installed at the other end of the second connecting rod, a second spring is arranged between the first connecting rod and the fourth limit block, the second spring is sleeved on the second connecting rod, one end of the third connecting rod is fixedly installed on the top of the fourth limit block, and a connecting ring is fixedly installed on the other side of the third connecting rod.

[0009] Preferably, the variable component includes a sliding connecting rod, a movable limiting block is fixedly installed on one end of the sliding connecting rod, and a first wedge block is fixedly installed on the other end of the sliding connecting rod.

[0010] Preferably, the first connecting rod is fixedly installed with an axial permanent magnet, a second limit block is movably installed at one end of the axial permanent magnet, and a first limit block is movably installed at the other end of the axial permanent magnet. A first spring is provided between the second limit block and the first limit block, and the first spring is sleeved on the axial permanent magnet. Movable bins are provided in the upper and lower parts of the movable block.

[0011] Preferably, a groove is provided in the shaft-shaped permanent magnet, the diameter of the groove is larger than the diameter of the sliding connecting rod and smaller than the diameter of the movable limit block, and the movable limit block is movably installed in the groove.

[0012] Preferably, a second wedge block is movably connected to the upper and lower parts of the first wedge block, the second wedge block is fixedly connected to the fifth limit block, the fifth limit block is fixedly connected to the sliding conductive rod, a third spring is provided between the fifth limit block and the variable block, and the third spring is sleeved on the sliding conductive rod.

[0013] Preferably, the contact surfaces of the first wedge block and the two second wedge blocks fit respectively, and the second wedge block is provided with a groove, and the diameter of the groove is equal to the diameter of the sliding connecting rod.

[0014] Preferably, shunt resistors are provided at the upper and lower parts inside the shunt resistor box, a groove is opened inside the shunt resistor box and a contact point is provided which fits with the top of the sliding conductive rod, which can be used to guide the current to the shunt resistor, and a contact point is provided on the top of the sliding conductive rod. When the top of the sliding conductive rod is located inside the shunt resistor box, it is connected to the contact point on the shunt resistor box to guide the current to the shunt resistor.

[0015] Preferably, one side of the second insulating sleeve is fixedly connected to the first insulating sleeve, and the other side of the second insulating sleeve is fixedly connected to the insulating connecting sleeve.

[0016] Preferably, a hole is opened on the electric meter box and an insulating ring is fixedly installed, a connecting wire passes through the middle of the insulating ring, and a safety door is movably installed on the front of the electric meter box.

[0017] Preferably, an adjusting gear is movably installed on the top of the connecting ring, and an adjusting ring is movably connected to the connecting ring. The teeth on the adjusting ring mesh with the teeth on the adjusting gear. The thickness of the adjusting gear is greater than the thickness of the adjusting ring. One side of the upper part of the adjusting gear contacts and meshes with the gear groove. The connecting ring and the adjusting ring are both mounted on the rheostat. When the connecting ring moves, the gear groove causes the adjusting gear to rotate, thereby the adjusting gear drives the adjusting ring to rotate.

[0018] Compared with the prior art, the present invention provides a distribution box for electric power engineering, which has the following beneficial effects:

[0019] 1. The power distribution box for electric power engineering, when the current inside the main power supply cable is large, converts the current signal into a magnetic signal according to the magnitude of the current through the electromagnetic component, thereby adjusting the resistance of the main circuit through the shunt component and the converter component to reduce the current, and triggers the connection of the parallel current circuit to shunt the current of the main circuit to protect the circuit by setting a variable component when the current is large, and can make corresponding mechanical interference according to the magnitude of the current to adjust the current and protect the circuit.

[0020] 2. The distribution box for electric power engineering is provided with an electromagnetic component. When the current in the electromagnetic coil increases or decreases when the current is large, the magnetism of the iron core is correspondingly enhanced or weakened, thereby moving the axial permanent magnet closer or farther away accordingly, thereby converting the magnitude of the current into the magnitude of the magnetism of the iron core to facilitate automatic control of the current regulation.

[0021] 3. The power distribution box for electric power engineering is provided with a shunt component. When the continuous current in the electromagnetic coil increases, the magnetic block will move more. During the movement of the axial permanent magnet, the sliding conductive rod moves into the shunt resistor box and contacts the contact in the shunt resistor box. Then, the shunt resistor in the shunt resistor box and the main circuit form a parallel circuit, thereby reducing the current in the main circuit and protecting the circuit. When the current decreases, during the continuous movement of the axial permanent magnet, the axial permanent magnet will cause the sliding conductive rod to move out of the shunt resistor box and return to its original position. Then, the parallel circuit formed by the shunt resistor in the shunt resistor box and the main circuit can be disconnected, thereby restoring the current, thereby realizing graded regulation of the current.

[0022] 4. The power distribution box for electric power engineering is provided with a current conversion component. During the movement of the shaft-type permanent magnet, the first limit block fixedly installed on the shaft-type permanent magnet will compress the first spring. During the movement of the shaft-type permanent magnet, the first connecting rod will be driven to move, the first connecting rod will drive the third limit block to move, the third limit block will drive the second connecting rod to move, the movement of the second connecting rod will drive the fourth limit block to move, the movement of the fourth limit block will compress the second spring, and at the same time, the fourth limit block will drive the third connecting rod to move, the movement of the third connecting rod will drive the connecting ring to move, the movement of the connecting ring will change the resistance value of the rheostat. At this time, the connecting ring moves toward the side of the fourth limit block, which will increase the length of the contact part between the connecting ring and the rheostat, thereby increasing the resistance value of the rheostat, thereby reducing the current and protecting the circuit.

[0023] 5. The distribution box for power engineering is provided with a variable component. The axial permanent magnet will drive the movable limit block to move, and the movable limit block will drive the sliding connecting rod to move, and the sliding connecting rod will drive the first wedge block to move. The first wedge block will contact and move with the second wedge block, thereby driving the second wedge block to move, so that the second wedge block moves in the movable bin, so that the second wedge block drives the fifth limit block to move, and the fifth limit block drives the sliding conductive rod to move. At this time, the second wedge block compresses the third spring. When the sliding conductive rod moves to the shunt resistor box and contacts the contactor in the shunt resistor box, the shunt resistor in the shunt resistor box can form a parallel circuit with the main circuit, thereby reducing the current in the main circuit and playing a role in protecting the circuit.

[0024] 6. The distribution box for the power engineering project adopts mechanical interference. The advantage of mechanical interference is that it does not affect the normal operation and movement of the circuit. It can respond in time when the current changes unexpectedly. It has strong sensitivity and high safety. It can also play a two-way adjustment role to ensure the normal operation and safety of the circuit.

[0025] 7. The power distribution box for electric power engineering is provided with a connecting ring. The movement of the connecting ring will drive the adjustment gear and the adjustment ring to move, so that the adjustment gear contacts the gear groove and is rotated by the gear groove. The rotation of the adjusting gear will cause the adjustment ring to rotate, so that the adjustment ring will rotate during the movement, thereby changing the contact point between the adjustment ring and the variable resistor, which will change the resistance value of the variable resistor. Because the adjustment ring will rotate during the movement, the resistance of the variable resistor will change continuously, making the resistance value adjustment of the variable resistor more delicate and accurate, thereby realizing stepless regulation of the current. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the electromagnetic component, the shunt component and the current conversion component of the present invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of the electromagnetic component of the present invention;

[0029] Figure 4 It is a schematic diagram of the connection structure between the second insulating sleeve and the insulating connecting sleeve of the present invention;

[0030] Figure 5 This is a schematic diagram of the connection between the flow diversion component and the flow conversion component of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the flow distribution component and the flow conversion component of the present invention;

[0032] Figure 7 This is a schematic diagram of the internal structure of the second insulating sleeve of the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the variable components of the present invention;

[0034] Fig. 9 This is a schematic diagram of the structure of the second wedge block of the present invention;

[0035] Fig.10 is a cross-sectional schematic diagram of a third insulating sleeve of the present invention;

[0036] Fig.11 It is a schematic diagram of the structure of the adjustment ring of the present invention.

[0037] In the figure: 100, electric meter box; 101, safety door; 102, insulating collar; 200, electromagnetic assembly; 201, first insulating sleeve; 202, electromagnetic coil; 203, iron core; 300, shunt assembly; 301, shunt resistor box; 302, second insulating sleeve; 303, variable block; 304, movable bin; 305, axial permanent magnet; 306, first limit block; 307, first spring; 308, second limit block; 309, first connecting rod; 400, converter assembly; 401, insulating connecting sleeve; 402, third limit Block; 403, second connecting rod; 404, fourth limit block; 405, second spring; 406, third connecting rod; 407, connecting ring; 408, rheostat; 409, connecting wire; 410, third insulating sleeve; 411, gear groove; 412, adjusting ring; 413, adjusting gear; 500, variable component; 501, movable limit block; 502, sliding connecting rod; 503, first wedge block; 504, second wedge block; 505, groove; 506, fifth limit block; 507, sliding conductive rod; 508, third spring. DETAILED DESCRIPTION

[0038] 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.

[0039] See also Figures 1 to 11 A distribution box for electric power engineering includes an electric meter box 100, an electromagnetic component 200, a shunt component 300, a current conversion component 400 and a variable component 500. The electric meter box 100 is used to protect and install its internal components, the electromagnetic component 200 is used to convert a current signal into a magnetic signal, the shunt component 300 is used to shunt the current, the current conversion component 400 is used to change the current, and the variable component 500 adjusts the current through mechanical interference. The electromagnetic component 200, the shunt component 300, the current conversion component 400 and the variable component 500 are installed in the electric meter box 100.

[0040] The electromagnetic assembly 200 includes a first insulating sleeve 201 , an electromagnetic coil 202 is installed outside the first insulating sleeve 201 , and an iron core 203 is movably installed inside the first insulating sleeve 201 .

[0041] The shunt assembly 300 includes a shunt resistor box 301 , a second insulating sleeve 302 is provided in the middle of the shunt resistor box 301 , a movable block 303 is provided inside the second insulating sleeve 302 , and first connecting rods 309 are movably installed on both sides of the movable block 303 .

[0042] The converter assembly 400 includes an insulating connecting sleeve 401, a second connecting rod 403 and a third connecting rod 406. A third insulating sleeve 410 is provided inside the insulating connecting sleeve 401. A gear groove 411 is opened inside the third insulating sleeve 410. A rheostat 408 is provided inside the third insulating sleeve 410. The rheostat 408 is connected to a connecting wire 409. The second connecting rod 403 is movably connected to the first connecting rod 309. A third limit block 402 is fixedly installed at one end of the second connecting rod 403. The third limit block 402 is located between the first connecting rod 309 and the variable block 303 and can move back and forth. A fourth limit block 404 is fixedly installed at the other end of the second connecting rod 403. A second spring 405 is provided between the first connecting rod 309 and the fourth limit block 404. The second spring 405 is sleeved on the second connecting rod 403. One end of the third connecting rod 406 is fixedly installed on the top of the fourth limit block 404. A connecting ring 407 is fixedly installed on the other side of the third connecting rod 406.

[0043] The movable assembly 500 includes a sliding connecting rod 502 , a movable limiting block 501 is fixedly installed at one end of the sliding connecting rod 502 , and a first wedge block 503 is fixedly installed at the other end of the sliding connecting rod 502 .

[0044] The first connecting rod 309 is fixedly installed with an axial permanent magnet 305, and a second limit block 308 is movably installed at one end of the axial permanent magnet 305. The other end of the axial permanent magnet 305 is movably installed with a first limit block 306. A first spring 307 is provided between the second limit block 308 and the first limit block 306. The first spring 307 is sleeved on the axial permanent magnet 305, and movable bins 304 are opened in the upper and lower parts of the variable block 303.

[0045] A slot is provided in the shaft-shaped permanent magnet 305 . The diameter of the slot is larger than the diameter of the sliding connecting rod 502 and smaller than the diameter of the movable limit block 501 . The movable limit block 501 is movably installed in the slot.

[0046] The first wedge block 503 is movably connected to a second wedge block 504 at the upper and lower parts, the second wedge block 504 is fixedly connected to a fifth limit block 506, the fifth limit block 506 is fixedly connected to a sliding conductive rod 507, a third spring 508 is provided between the fifth limit block 506 and the variable block 303, and the third spring 508 is sleeved on the sliding conductive rod 507.

[0047] The first wedge block 503 is matched with the contact surfaces of the two second wedge blocks 504 respectively. The second wedge block 504 is provided with a groove 505 . The diameter of the groove 505 is equal to the diameter of the sliding connecting rod 502 .

[0048] Shunt resistors are provided at the upper and lower parts inside the shunt resistor box 301. A groove is opened inside the shunt resistor box 301 and a contact point is provided which fits with the top of the sliding conductive rod 507, which can be used to guide the current to the shunt resistor. A contact point is provided on the top of the sliding conductive rod 507. When the top of the sliding conductive rod 507 is located inside the shunt resistor box 301, it is connected to the contact point on the shunt resistor box 301, thereby guiding the current to the shunt resistor.

[0049] One side of the second insulating sleeve 302 is fixedly connected to the first insulating sleeve 201 , and the other side of the second insulating sleeve 302 is fixedly connected to the insulating connecting sleeve 401 .

[0050] The meter box 100 is provided with a hole and an insulating collar 102 is fixedly installed thereon, a connecting wire 409 passes through the middle of the insulating collar 102 , and a safety door 101 is movably installed on the front of the meter box 100 .

[0051] An adjusting gear 413 is movably installed on the top of the connecting ring 407, and an adjusting ring 412 is movably connected to the connecting ring 407. The teeth on the adjusting ring 412 mesh with the teeth on the adjusting gear 413. The thickness of the adjusting gear 413 is greater than the thickness of the adjusting ring 412. One side of the upper part of the adjusting gear 413 contacts and meshes with the gear groove 411. The connecting ring 407 and the adjusting ring 412 are both sleeved on the rheostat 408. When the connecting ring 407 moves, the gear groove 411 will cause the adjusting gear 413 to rotate, so that the adjusting gear 413 drives the adjusting ring 412 to rotate.

[0052] During use, when the current is large, the current in the electromagnetic coil 202 increases, which will enhance the magnetism of the iron core 203, thereby attracting and moving the axial permanent magnet 305 closer. During the movement of the axial permanent magnet 305, the first limit block 306 fixedly installed on the axial permanent magnet 305 will compress the first spring 307. During the movement of the axial permanent magnet 305, the first connecting rod 309 will be driven to move, and the first connecting rod 309 will drive the third limit block 402 to move, and the third limit block 402 will drive the second connecting rod 403 to move. The movement of the second connecting rod 403 will drive the fourth limit block 404 to move. The movement of the fourth limit block 404 will compress the second spring 405. At the same time, the fourth limit block 404 will drive the third connecting rod 406 to move, and the movement of the third connecting rod 406 will drive the connecting ring 407 to move. When the connecting ring 407 moves, the movement of the connecting ring 407 will drive the adjusting gear 413 and the adjusting ring 412 to move, so that the adjusting gear 413 contacts the gear slot 411 and is rotated by the gear slot 411. The rotation of the adjusting gear 413 will cause the adjusting ring 412 to rotate, so that the adjusting ring 412 will rotate during the movement, thereby changing the contact point between the adjusting ring 412 and the variable resistor 408, which will change the resistance value of the variable resistor 408. Because the adjusting ring 412 will rotate during the movement, the resistance of the variable resistor 408 will change continuously, making the resistance value adjustment of the variable resistor 408 more delicate and accurate. At this time, the connecting ring 407 moves toward the side of the fourth limit block 404, which will increase the length of the contact portion between the connecting ring 407 and the variable resistor 408, thereby increasing the resistance value of the variable resistor 408, thereby reducing the current and protecting the circuit.

[0053] When the current is larger, the current in the electromagnetic coil 202 increases, which will enhance the magnetism of the iron core 203, thereby continuing to adsorb the shaft-type permanent magnet 305 and moving it closer, and the shaft-type permanent magnet 305 will move more. During the movement of the shaft-type permanent magnet 305, the shaft-type permanent magnet 305 will drive the movable limit block 501 to move, and the movable limit block 501 will drive the sliding connecting rod 502 to move, and the sliding connecting rod 502 will drive the first wedge block 503 to move, and the first wedge block 503 will contact and move with the second wedge block 504, thereby driving the second wedge block 504 to move. The second wedge block 504 moves, causing the second wedge block 504 to move in the movable compartment 304, so that the second wedge block 504 drives the fifth limit block 506 to move, and the fifth limit block 506 drives the sliding conductive rod 507 to move. At this time, the second wedge block 504 compresses the third spring 508. When the sliding conductive rod 507 moves to the shunt resistor box 301 and contacts the contactor in the shunt resistor box 301, the shunt resistor in the shunt resistor box 301 can form a parallel circuit with the main circuit, thereby reducing the current in the main circuit and playing a role in protecting the circuit.

[0054] When the current decreases, the current in the electromagnetic coil 202 is smaller, which will weaken the magnetism of the iron core 203. The pressure of the first spring 307 is greater than the attraction of the iron core 203 to the shaft-type permanent magnet 305. Under the action of the first spring 307, the first limit block 306 will move and reset with the shaft-type permanent magnet 305. During the movement of the shaft-type permanent magnet 305, the first connecting rod 309 will be driven to move. The movement of the first connecting rod 309 will increase the pressure of the second spring 405 between the first connecting rod 309 and the fourth limit block 404. The fourth limit block 404 will drive the second connecting rod 403 and the third connecting rod 406 to move and reset. The movement of the third connecting rod 406 will drive the connecting ring 407 to move. The movement of the connecting ring 407 will change the resistance value of the rheostat 408. At this time, the connecting ring 407 moves toward the insulating sleeve ring 102, which will reduce the length of the contact portion between the connecting ring 407 and the rheostat 408, thereby reducing the resistance value of the rheostat 408 and restoring the current.

[0055] When the current decreases, while the axial permanent magnet 305 continues to move, the axial permanent magnet 305 will drive the movable limit block 501 to move, and the movable limit block 501 will drive the sliding connecting rod 502 to move, and the sliding connecting rod 502 will drive the first wedge block 503 to move, and the first wedge block 503 will separate from the second wedge block 504 and move. At this time, under the action of the third spring 508, the fifth limit block 506 will move and reset, so that the fifth limit block 506 drives the second wedge block 504 to move and reset, and at the same time, the fifth limit block 506 drives the sliding conductive rod 507 to move and reset. When the sliding conductive rod 507 is moved out of the shunt resistor box 301 and returns to its original position, the parallel circuit formed by the shunt resistor in the shunt resistor box 301 and the main circuit can be disconnected, thereby restoring the current.

[0056] Therefore, when the current inside the main power supply line is large, the electromagnetic component 200 converts the current signal into a magnetic signal according to the size of the current, so that the resistance of the main circuit is adjusted through the shunt component 300 and the converter component 400 to reduce the current, and by setting the variable component 500, when the current is large, the parallel current circuit is triggered to shunt the current of the main circuit to protect the circuit, thereby realizing automatic graded regulation and stepless regulation of the current, and making corresponding mechanical interference according to the size of the current to regulate the current and protect the circuit.

[0057] The advantage of mechanical interference is that it does not affect the normal operation and function of the circuit, can respond promptly to unexpected changes in current, has strong sensitivity and high safety, and can play a bidirectional adjustment role to ensure the normal operation and safety of the circuit.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A distribution box for electric power engineering, comprising an electric meter box (100), an electromagnetic component (200), a shunt component (300), a current conversion component (400) and a variable component (500), wherein the electric meter box (100) is used to protect and install its internal components, the electromagnetic component (200) is used to convert a current signal into a magnetic signal, the shunt component (300) is used to shunt the current, the current conversion component (400) is used to change the current, and the variable component (500) adjusts the current through mechanical interference, the electric meter box (100) is provided with a hole and an insulating collar (102) is fixedly installed, a connecting wire (409) passes through the middle of the insulating collar (102), and a safety door (101) is movably installed on the front of the electric meter box (100), characterized in that: An electromagnetic component (200), a current shunting component (300), a current conversion component (400) and a variable component (500) are installed in the electric meter box (100); The electromagnetic assembly (200) comprises a first insulating sleeve (201), an electromagnetic coil (202) is installed outside the first insulating sleeve (201), and an iron core (203) is movably installed inside the first insulating sleeve (201); The shunt assembly (300) comprises a shunt resistor box (301), a second insulating sleeve (302) is provided in the middle of the shunt resistor box (301), a movable block (303) is provided inside the second insulating sleeve (302), and first connecting rods (309) are movably installed on both sides of the movable block (303); The current conversion assembly (400) comprises an insulating connection sleeve (401), a second connection rod (403) and a third connection rod (406); a third insulating sleeve (410) is arranged inside the insulating connection sleeve (401); a gear groove (411) is provided inside the third insulating sleeve (410); a variable resistor (408) is arranged inside the third insulating sleeve (410); a connecting wire (409) is connected to the variable resistor (408); the second connection rod (403) is movably connected to the first connection rod (309); a third limit block (406) is fixedly installed at one end of the second connection rod (403); 2), the third limit block (402) is located between the first connecting rod (309) and the movable block (303) and can move back and forth, the other end of the second connecting rod (403) is fixedly mounted with a fourth limit block (404), a second spring (405) is provided between the first connecting rod (309) and the fourth limit block (404), the second spring (405) is sleeved on the second connecting rod (403), one end of the third connecting rod (406) is fixedly mounted on the top of the fourth limit block (404), and the other side of the third connecting rod (406) is fixedly mounted with a connecting ring (407); The movable assembly (500) comprises a sliding connecting rod (502), one end of which is fixedly mounted with a movable limit block (501), and the other end of which is fixedly mounted with a first wedge block (503).

2. A distribution box for electric power engineering according to claim 1, characterized in that: The first connecting rod (309) is fixedly mounted with an axial permanent magnet (305); a second limit block (308) is movably mounted on one end of the axial permanent magnet (305); a first limit block (306) is movably mounted on the other end of the axial permanent magnet (305); a first spring (307) is provided between the second limit block (308) and the first limit block (306); the first spring (307) is sleeved on the axial permanent magnet (305); and movable bins (304) are provided in the upper and lower parts of the movable block (303).

3. A distribution box for electric power engineering according to claim 2, characterized in that: A groove is provided in the shaft-shaped permanent magnet (305), the diameter of the groove being larger than the diameter of the sliding connection rod (502) and smaller than the diameter of the movable limit block (501), and the movable limit block (501) is movably installed in the groove.

4. A distribution box for electric power engineering according to claim 1, characterized in that: The first wedge block (503) is movably connected to a second wedge block (504) at the upper and lower parts thereof; the second wedge block (504) is fixedly connected to a fifth limit block (506); the fifth limit block (506) is fixedly connected to a sliding conductive rod (507); a third spring (508) is provided between the fifth limit block (506) and the movable block (303); and the third spring (508) is sleeved on the sliding conductive rod (507).

5. A distribution box for electric power engineering according to claim 4, characterized in that: The contact surfaces of the first wedge block (503) and the two second wedge blocks (504) respectively fit together, and the second wedge block (504) is provided with a groove (505), and the diameter of the groove (505) is equal to the diameter of the sliding connection rod (502).

6. A distribution box for electric power engineering according to claim 4, characterized in that: Shunt resistors are provided at the upper and lower parts of the shunt resistor box (301). A groove is provided inside the shunt resistor box (301) and a contact point is provided that fits with the top of the sliding conductive rod (507) so as to be used to guide current to the shunt resistor. A contact point is provided at the top of the sliding conductive rod (507). When the top of the sliding conductive rod (507) is located inside the shunt resistor box (301), it conducts with the contact point on the shunt resistor box (301) so as to guide current to the shunt resistor.

7. A power distribution box for electric power engineering according to claim 1, characterized in that: One side of the second insulating sleeve (302) is fixedly connected to the first insulating sleeve (201), and the other side of the second insulating sleeve (302) is fixedly connected to the insulating connection sleeve (401).

8. A power distribution box for electric power engineering according to claim 1, characterized in that: An adjusting gear (413) is movably mounted on the top of the connecting ring (407), and an adjusting ring (412) is movably connected to the connecting ring (407). The teeth on the adjusting ring (412) mesh with the teeth on the adjusting gear (413). The thickness of the adjusting gear (413) is greater than the thickness of the adjusting ring (412). One side of the upper portion of the adjusting gear (413) contacts and meshes with the gear groove (411). The connecting ring (407) and the adjusting ring (412) are both sleeved on the rheostat (408). When the connecting ring (407) moves, the gear groove (411) causes the adjusting gear (413) to rotate, so that the adjusting gear (413) drives the adjusting ring (412) to rotate.

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