A voltage overload test device for power distribution cabinet

Abstract

The present invention discloses a distribution cabinet voltage overload test device, and relates to the technical field of distribution cabinet voltage overload test. This distribution cabinet voltage overload test device includes a power supply simulator, and the power supply simulator includes a body, and the body is provided with a push-type start switch for start control, and the body is provided with a control component for load adjustment control during the test, and the control component includes a drive shaft for load adjustment control inside the body that is rotatably connected to the front side of the body. This distribution cabinet voltage overload test device, in the process of using the power supply simulator to perform a distribution cabinet voltage overload test operation, generates resistance to the rotation of the knob through the mutual cooperation of the speed limit component and the elastic component, and through the resistance effect, limits the rapid rotation of the knob during the load adjustment process, causing the test system to suddenly increase a large amount of load, so that the distribution cabinet generates excessive impact and danger, which facilitates more stable and safe testing operations.

Description

Technical Field

[0001] The invention relates to the technical field of voltage overload testing of a power distribution cabinet, and in particular to a voltage overload testing device for a power distribution cabinet. Background Art

[0002] The distribution cabinet voltage overload test equipment is a device used to simulate and test the performance and stability of the distribution cabinet under voltage overload conditions. This equipment can simulate voltage conditions higher than the normal operating voltage to detect the response of the distribution cabinet under voltage overload and the effectiveness of the protection measures.

[0003] Specifically, the distribution cabinet voltage overload test equipment may include the following main parts:

[0004] 1. Power simulator: This device can simulate different voltage waveforms and voltage levels to conduct overload tests on the power distribution cabinet;

[0005] 2. Control system: used to control the voltage output by the power simulator and to set test conditions, such as overload duration, overload multiple, etc.;

[0006] 3. Measurement and recording system: used to monitor and record key parameters such as voltage, current, power, temperature, etc. during the test process in order to analyze the performance of the distribution cabinet under overload conditions;

[0007] 4. Protective equipment: For safety reasons, test equipment is usually equipped with safety measures such as overload protection, overvoltage protection, and overtemperature protection to prevent danger during the test;

[0008] 5. Data analysis software: used to process and analyze test data to evaluate the performance of the distribution cabinet under voltage overload conditions.

[0009] When using a power simulator to perform a voltage overload test on a power distribution cabinet, the load during the test is adjusted and controlled through the control components on the machine body. However, during the adjustment and control process, a large amount of load is often suddenly increased due to improper operation, causing excessive impact on the power distribution cabinet and posing a danger. Summary of the invention

[0010] The purpose of the present invention is to provide a voltage overload test device for a power distribution cabinet to solve the problems raised in the above background technology.

[0011] To achieve the above-mentioned object, the present invention provides the following technical solutions: a voltage overload test device for a power distribution cabinet, comprising a power simulator, the power simulator comprising a body, the body being provided with a push-type start switch for start control, the body being provided with a control component for load adjustment control during the test, the control component comprising a drive shaft rotatably connected to the front side of the body for load adjustment control inside the body, a knob being fixed at one end of the drive shaft, the body being provided with a dial for displaying load indication after rotation, and further comprising:

[0012] A shielding component provided on the machine body is used to prevent the test from being interrupted due to the erroneous pressing of the start switch during the test, and the shielding component is provided on the start switch;

[0013] A speed limiting component arranged on the machine body is used to avoid a large adjustment change of the control component during the process of load control adjustment. The speed limiting component includes a mounting cover fixed on the front side of the machine body, the drive shaft is rotatably connected to the mounting cover, a plurality of strip plates are connected to the interior of the mounting cover through a first guide component, each of the strip plates is arranged in a ring array around the drive shaft, the strip plates are connected to friction plates through elastic components, the friction plates are provided with arc grooves, and the arc grooves are arranged against the outer side of the drive shaft under the elastic force of the elastic component, and an adjustment component for adjusting the limiting effect is arranged on the mounting cover;

[0014] The elastic component includes a plurality of first sleeves fixed on the strip plate, each of the first sleeves is slidably connected with a first slide rod, one end of the first slide rod is fixed to one side of the friction plate, and a first spring is sleeved on the outer side of each first sleeve, and the two ends of the first spring are respectively set to resist the friction plate and the strip plate.

[0015] Preferably, the first guide assembly includes a plurality of second sleeves fixed to one side of the strip plate, each of the second sleeves is slidably connected to a second slide rod, and one end of each of the second slide rods is fixed to the inside of the mounting cover.

[0016] Preferably, the adjustment component includes a driving ring rotatably connected to the inside of the mounting cover, the driving ring is sleeved on the outside of the driving shaft, a plurality of first inclined grooves are opened on the driving ring, each of the first inclined grooves is slidably connected with a first transmission pin, one end of each of the first transmission pins is respectively fixed to each strip plate, and a driving component for rotationally driving the driving ring is provided on the mounting cover.

[0017] Preferably, the driving component includes a second inclined groove provided on the driving ring, a second transmission pin is slidably connected to the second inclined groove, a transmission plate is arranged inside the mounting cover, one end of the second transmission pin is fixed to the transmission plate, and the mounting cover is provided with a moving component for moving the transmission plate and a second guide component for guiding during the movement.

[0018] Preferably, the moving component includes an installation box which is connected and fixed on the installation cover, the installation box is rotatably connected to a threaded tube, the threaded tube is threadedly engaged with a threaded rod, one end of the threaded rod is fixed to one side of the transmission plate, and one end of the threaded tube is located on the outside of the installation box and is fixed with a driving pin for driving the threaded tube.

[0019] Preferably, the second guide assembly includes two third sleeves fixed on one side of the transmission plate, the two third sleeves are respectively located on both sides of the threaded rod, and the two third sleeves are slidably connected with a third slide rod, and one end of the third slide rod is fixed to the inside of the installation box.

[0020] Preferably, the shielding assembly includes an installation frame fixed to the front side of the machine body, the start switch is located on the inner side of the installation frame, two sets of slide grooves are opened on the installation frame, baffles for shielding the start switch are slidably connected to the two slide grooves, an extrusion assembly for extruding the two baffles is provided on one side of the installation frame, and a sliding assembly for guiding the sliding of the baffles during the extrusion process is provided on the installation frame.

[0021] Preferably, the extrusion assembly includes an extrusion plate arranged on one side of the mounting frame, a connection assembly for connecting the extrusion plate is arranged on the front side of the body, two third inclined slots arranged symmetrically to each other are provided on the extrusion plate, two third transmission pins are slidably connected to the two third inclined slots respectively, one end of the two third transmission pins is respectively fixed to one side of the two baffles, and a transmission assembly for transmitting the extrusion plate after returning to zero is arranged on the knob;

[0022] The sliding assembly comprises a plurality of fixed blocks fixed on the baffle, each of the fixed blocks is slidably connected with a T-shaped rod, and one end of the T-shaped rod is fixed to the outer side of the installation frame.

[0023] Preferably, the transmission assembly includes inclined surfaces on both sides of the upper end of the extrusion plate, a positioning groove is provided at the upper end of the extrusion plate, the positioning groove is located between the two inclined surfaces, and a pushing rod for pushing against the inclined surfaces is fixed on the knob.

[0024] Preferably, the connecting assembly includes a plurality of fourth sleeves fixed on the front side of the machine body, each of the fourth sleeves is slidably connected with a fourth slide rod, one end of the fourth slide rod is fixed to the lower end of the extrusion plate, and a third spring is sleeved on the outer side of each of the fourth sleeves.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] This type of distribution cabinet voltage overload test equipment uses a power simulator to perform a distribution cabinet voltage overload test operation. Through the cooperation of the speed limit component and the elastic component, resistance is generated to the rotation of the knob. Through the resistance effect, the rapid rotation of the knob during the load adjustment process is limited, causing the test system to suddenly increase a large amount of load, which may cause excessive impact on the distribution cabinet and cause danger, thereby facilitating more stable and safe testing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the extrusion assembly, the transmission assembly and the connection assembly of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the shielding assembly and the sliding assembly of the present invention;

[0030] Figure 4 It is a schematic diagram of the control component structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the adjustment component and the driving component of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the moving assembly and the second guide assembly of the present invention;

[0033] Figure 7 It is a schematic structural diagram of the speed limiting component, the first guide component and the elastic component of the present invention.

[0034] In the figure: 101, body; 102, start switch; 2, control assembly; 201, drive shaft; 202, knob; 203, dial; 3, shielding assembly; 301, mounting frame; 302, slide groove; 303, baffle; 4, sliding assembly; 401, fixing block; 402, T-bar; 5, extrusion assembly; 501, extrusion plate; 502, third inclined groove; 503, third transmission pin; 6, transmission assembly; 601, inclined plane; 602, positioning groove; 603, push rod; 7, connecting assembly; 701, fourth sleeve; 702, fourth slide rod; 703, third spring; 8, speed limit assembly; 801, mounting cover; 802, strip plate; 803, Friction plate; 804, arc groove; 9, first guide assembly; 901, second sleeve; 902, second slide bar; 10, elastic assembly; 1001, first sleeve; 1002, first slide bar; 1003, first spring; 11, adjustment assembly; 1101, drive ring; 1102, first inclined groove; 1103, first transmission pin; 12, drive assembly; 1201, second inclined groove; 1202, second transmission pin; 1203, transmission plate; 13, moving assembly; 1301, installation box; 1302, threaded tube; 1303, threaded rod; 1304, drive pin; 14, second guide assembly; 1401, third sleeve; 1402, third slide bar. DETAILED DESCRIPTION

[0035] 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.

[0036] See also Figure 1-Figure 7 The present invention provides a technical solution: a power distribution cabinet voltage overload test device, including a power simulator, the power simulator including a body 101, a push-type start switch 102 for start control is provided on the body 101, a control component 2 for load adjustment control during the test is provided on the body 101, the control component 2 includes a drive shaft 201 rotatably connected to the front side of the body 101 for load adjustment control inside the body 101, a knob 202 is fixed at one end of the drive shaft 201, and a dial 203 for displaying the load after rotation is provided on the body 101, and also includes:

[0037] The shielding component 3 provided on the body 101 is used to prevent the start switch 102 from being accidentally pressed during the test and causing the test to be interrupted. The shielding component 3 is provided on the start switch 102;

[0038] The speed limiting component 8 arranged on the machine body 101 is used to prevent the control component 2 from making large adjustment changes during the process of load control adjustment. The speed limiting component 8 includes a mounting cover 801 fixed to the front side of the machine body 101. The drive shaft 201 is rotatably connected to the mounting cover 801. The interior of the mounting cover 801 is connected with a plurality of strip plates 802 through a first guide component 9. Each strip plate 802 is arranged in a ring array around the drive shaft 201. The strip plates 802 are connected with friction plates 803 through an elastic component 10. The friction plates 803 are provided with arc grooves 804. The arc grooves 804 are arranged against the outer side of the drive shaft 201 under the elastic force of the elastic component 10. The mounting cover 801 is provided with an adjustment component 11 for adjusting the limiting effect.

[0039] The elastic component 10 includes a plurality of first sleeves 1001 fixed on the strip plate 802, each of which is slidably connected with a first slide bar 1002, one end of which is fixed to one side of the friction plate 803, and a first spring 1003 is sleeved on the outer side of each first sleeve 1001, and the two ends of the first spring 1003 are respectively set against the friction plate 803 and the strip plate 802;

[0040] During the process of using a power simulator to perform a voltage overload test on the distribution cabinet, the speed limiting component 8 and the elastic component 10 cooperate with each other to generate resistance to the rotation of the knob 202. Through the resistance effect, the rapid rotation of the knob 202 during the load adjustment process is limited, causing the test system to suddenly increase a large amount of load, which may cause the distribution cabinet to produce excessive impact and cause danger, thereby facilitating more stable and safe testing operations.

[0041] See also Figure 5 , Figure 6 and Figure 7The first guide assembly 9 includes a plurality of second sleeves 901 fixed to one side of the strip plate 802, each second sleeve 901 is slidably connected to a second slide bar 902, and one end of each second slide bar 902 is fixed to the inside of the mounting cover 801; the adjustment assembly 11 includes a drive ring 1101 rotatably connected to the inside of the mounting cover 801, the drive ring 1101 is sleeved on the outside of the drive shaft 201, and a plurality of first inclined grooves 1102 are provided on the drive ring 1101, each first inclined groove 1102 is slidably connected to a first transmission pin 1103, and one end of each first transmission pin 1103 is respectively fixed to each strip plate 802, and the mounting cover 801 is provided with a drive ring 1101 for rotating. A driving component 12 driven by rotation; through the driving component 12, each strip plate 802 is driven to move under force. During the movement of the strip plates 802, the sliding guiding action of the second sleeve 901 and the second slide bar 902 on the first guide component 9 causes each strip plate 802 to move towards or away from each other after being subjected to force. Because one end of each friction plate 803 is against the outer side of the driving shaft 201, during the movement of the strip plates 802, the elastic force of the first spring 1003 on the elastic component 10 is adjusted, so that the elastic component 10 can frictionally slow down the driving shaft 201 with different elastic forces, so as to facilitate more flexible speed limit protection during the use of the power simulator.

[0042] See also Figure 5 The driving assembly 12 includes a second inclined groove 1201 provided on the driving ring 1101, a second transmission pin 1202 is slidably connected to the second inclined groove 1201, a transmission plate 1203 is provided inside the mounting cover 801, one end of the second transmission pin 1202 is fixed to the transmission plate 1203, and a moving assembly 13 for moving the transmission plate 1203 and a second guide assembly 14 for guiding during the movement are provided on the mounting cover 801; through the mutual cooperation between the moving assembly 13 and the second guide assembly 14, the transmission plate 1203 is driven. 203 is moved under force, and during the movement of the transmission plate 1203, the second transmission pin 1202 is driven to move synchronously. During the movement of the second transmission pin 1202, the driving ring 1101 is driven to rotate inside the mounting cover 801 through the interaction between the second transmission pin 1202 and the second inclined groove 1201. During the rotation of the driving ring 1101, each strip plate 802 is driven to move under force through the interaction between each first inclined groove 1102 and each first transmission pin 1103.

[0043] See also Figure 6The moving assembly 13 includes an installation box 1301 which is connected and fixed to the installation cover 801, a threaded tube 1302 is rotatably connected to the installation box 1301, a threaded rod 1303 is threadedly engaged with the threaded tube 1302, one end of the threaded rod 1303 is fixed to one side of the transmission plate 1203, one end of the threaded tube 1302 is located outside the installation box 1301 and is fixed with a driving pin 1304 for driving the threaded tube 1302; the second guide assembly 14 includes two third sleeves 1401 fixed to one side of the transmission plate 1203, and two third sleeves 1402 are fixed to one side of the transmission plate 1203. The third sleeves 1401 are respectively located on both sides of the threaded rod 1303, and the two third sleeves 1401 are slidably connected with the third slide rod 1402, and one end of the third slide rod 1402 is fixed to the inside of the installation box 1301; the threaded tube 1302 is driven to rotate by the driving pin 1304. During the rotation of the threaded tube 1302, the transmission plate 1203 is moved after being subjected to force through the mutual meshing transmission between the threaded tube 1302 and the threaded rod 1303 and the sliding guiding effect of the third sleeve 1401 and the third slide rod 1402.

[0044] See also Figure 2 and Figure 3 The shielding component 3 includes a mounting frame 301 fixed on the front side of the body 101, the start switch 102 is located on the inner side of the mounting frame 301, two sets of slide grooves 302 are opened on the mounting frame 301, and baffles 303 for shielding the start switch 102 are slidably connected to the two slide grooves 302. An extrusion component 5 for extruding the two baffles 303 is provided on one side of the mounting frame 301, and a sliding component 4 for guiding the sliding of the baffles 303 during the extrusion process is provided on the mounting frame 301; during the test, the two baffles 303 are driven by transmission to move closer to each other and resist each other, and the start switch 102 inside the mounting frame 301 is shielded by the two resisting baffles 303, so as to avoid accidentally touching the start switch 102 during the test and causing an unexpected interruption in the test.

[0045] See also Figure 2 and Figure 3The extrusion assembly 5 includes an extrusion plate 501 arranged on one side of the installation frame 301, and a connecting assembly 7 for connecting the extrusion plate 501 is arranged on the front side of the body 101. The extrusion plate 501 is provided with two third inclined grooves 502 arranged symmetrically with each other, and two third transmission pins 503 are respectively slidably connected to the two third inclined grooves 502, and one end of the two third transmission pins 503 is respectively fixed to one side of the two baffles 303, and a transmission assembly 6 for transmitting the extrusion plate 501 after returning to zero is arranged on the knob 202; the sliding assembly 4 includes a plurality of fixed blocks 401 fixed on the baffle 303, and each fixed block 401 is slidably connected to the baffle 303. A T-bar 402 is connected, and one end of the T-bar 402 is fixed to the outer side of the mounting frame 301; during the rotation and adjustment of the knob 202, the rotation of the knob 202 drives the push rod 603 to move synchronously and no longer abuts against the upper end of the extrusion plate 501, and the extrusion plate 501 is reset under the elastic force of each third spring 703 on the connecting component 7. During the resetting of the extrusion plate 501, the two baffles 303 are driven to move closer to each other and abut against each other through the interaction between the two third inclined grooves 502 and the two third transmission pins 503 respectively and the sliding guiding action of the T-bar 402 and the fixed block 401.

[0046] See also Figure 2 The transmission component 6 includes inclined surfaces 601 provided on both sides of the upper end of the extrusion plate 501, and a positioning groove 602 is provided on the upper end of the extrusion plate 501, and the positioning groove 602 is located between the two inclined surfaces 601. A push rod 603 for pushing against the inclined surface 601 is fixed on the knob 202; after the test is completed, the driving knob 202 is rotated and reset. During the resetting process, the push rod 603 is driven to rotate and resist against the inclined surface 601 on the extrusion plate 501. During the resistance process, the extrusion plate 501 is pushed to shrink under force. During the shrinkage of the extrusion plate 501, through transmission, the two baffles 303 are driven to move away from each other under force and no longer block the start switch 102, which is convenient for the subsequent pressing of the start switch 102 to turn off the power simulator.

[0047] See also Figure 2 The connecting assembly 7 includes a plurality of fourth sleeves 701 fixed on the front side of the body 101, each of which is slidably connected with a fourth slide bar 702, one end of the fourth slide bar 702 is fixed to the lower end of the extrusion plate 501, and a third spring 703 is sleeved on the outer side of each fourth sleeve 701; the extrusion plate 501 is guided after being subjected to force through the fourth sleeve 701 and the fourth slide bar 702, and the third spring 703 facilitates the reset movement of the extrusion plate 501 after movement.

[0048] Working principle: When using a power simulator to perform a voltage overload test on a power distribution cabinet, the machine body 101 is connected to the corresponding position of the power distribution cabinet. After the connection is completed, the power simulator is used to simulate different voltage waveforms and voltage levels to perform an overload test on the power distribution cabinet. During the test, the load size during the test is adjusted by turning the knob 202, so as to facilitate a more comprehensive test operation.

[0049] During the process of load adjustment by the control component 2, the first springs 1003 on the elastic component 10 push the friction plate 803 against each other, so that the arc grooves 804 on the friction plates 803 inside the mounting cover 801 are against the outer side of the drive shaft 201. During the rotation and adjustment of the knob 202, the rotation of the knob 202 drives the drive shaft 201 to rotate. During the rotation of the drive shaft 201, the friction between the arc grooves 804 on the friction plates 803 and the outer side of the drive shaft 201 generates resistance to the rotation of the knob 202. Through the resistance, the rapid rotation of the knob 202 during the load adjustment process causes the test system to suddenly increase a large amount of load, which causes the distribution cabinet to generate excessive impact and cause danger, thereby facilitating more stable and safe testing operations. In addition, during the speed limit protection process, the moving component 13 and the second guide component 14 cooperate with each other to drive the transmission plate 1203 to move under force. During the movement of the transmission plate 1203, the second guide component 14 drives the transmission plate 1203 to move. The transmission pin 1202 moves synchronously. During the movement of the second transmission pin 1202, the interaction between the second transmission pin 1202 and the second inclined groove 1201 drives the driving ring 1101 to rotate inside the mounting cover 801. During the rotation of the driving ring 1101, each first inclined groove 1102 interacts with each first transmission pin 1103, so that each strip plate 802 is driven to move under force. During the movement of the strip plate 802, the sliding guide effect of the second sleeve 901 and the second slide bar 902 on the first guide component 9 causes each strip plate 802 to move closer to or away from each other after being subjected to force. Because one end of each friction plate 803 abuts against the outer side of the driving shaft 201, during the movement of the strip plate 802, the elastic force of the first spring 1003 on the elastic component 10 is adjusted, so that the elastic component 10 can frictionally reduce the speed of the driving shaft 201 with different elastic forces, so as to facilitate more flexible speed limit protection for the process of using the power simulator.

[0050] During the adjustment process of the knob 202, the push rod 603 is driven to move synchronously through the rotation of the knob 202 and no longer abuts against the upper end of the extrusion plate 501. The extrusion plate 501 is reset under the elastic force of each third spring 703 on the connecting assembly 7. During the reset process of the extrusion plate 501, the two third inclined slots 502 interact with the two third transmission pins 503 respectively, so that the two baffles 303 are driven to move closer to each other and abut against each other. The start switch 102 inside the installation frame 301 is blocked by the two abutting baffles 303. , to avoid accidentally touching the start switch 102 during the test and causing an unexpected interruption in the test. After the test is completed, the driving knob 202 is rotated to reset. During the resetting process, the push rod 603 is driven to rotate and resist the inclined surface 601 on the extrusion plate 501. During the resistance process, the extrusion plate 501 is pushed to shrink under force. During the shrinkage of the extrusion plate 501, the two baffles 303 are driven through transmission to move away from each other under force and no longer block the start switch 102, which is convenient for the subsequent pressing of the start switch 102 to turn off the power simulator.

Claims

1. A voltage overload test device for a power distribution cabinet, comprising: A power simulator, the power simulator comprising a body (101), the body (101) being provided with a push-type start switch (102) for start control, the body (101) being provided with a control component (2) for load adjustment control during a test, the control component (2) comprising a drive shaft (201) rotatably connected to the front side of the body (101) for load adjustment control inside the body (101), a knob (202) being fixed to one end of the drive shaft (201), and a dial (203) for displaying load readings after rotation being provided on the body (101); It is characterized by further comprising: A shielding component (3) disposed on the machine body (101) is used to prevent the start switch (102) from being accidentally pressed during the test, thereby causing the test to be interrupted; the shielding component (3) is disposed on the start switch (102); A speed limiting component (8) arranged on the machine body (101) is used to prevent the control component (2) from making large adjustment changes during the process of load control adjustment. The speed limiting component (8) comprises a mounting cover (801) fixed to the front side of the machine body (101). The drive shaft (201) is rotatably connected to the mounting cover (801). The interior of the mounting cover (801) is connected to a plurality of strip plates (802) via a first guide component (9). Each of the strip plates (802) is arranged in a ring array around the drive shaft (201). The strip plates (802) are connected to friction plates (803) via an elastic component (10). The friction plates (803) are provided with arc grooves (804). The arc grooves (804) are arranged against the outer side of the drive shaft (201) under the elastic force of the elastic component (10). The mounting cover (801) is provided with an adjustment component (11) for adjusting the limiting effect. The elastic component (10) comprises a plurality of first sleeves (1001) fixed on the strip plate (802), each of the first sleeves (1001) being slidably connected to a first slide bar (1002), one end of the first slide bar (1002) being fixed to one side of the friction plate (803), a first spring (1003) being sleeved on the outer side of each of the first sleeves (1001), and two ends of the first spring (1003) being respectively disposed against the friction plate (803) and the strip plate (802); The first guide assembly (9) comprises a plurality of second sleeves (901) fixed to one side of the strip plate (802), each of the second sleeves (901) being slidably connected to a second slide bar (902), one end of each of the second slide bars (902) being fixed to the inside of the mounting cover (801), and the adjustment assembly (11) comprises a drive ring (1101) rotatably connected to the inside of the mounting cover (801), the drive ring (1101) being sleeved on the outside of the drive shaft (201), and the drive ring (1101) being provided with a plurality of first inclined grooves (1102), each of the first inclined grooves (1102) being rotatably connected to the inside of the mounting cover (801). A first transmission pin (1103) is slidably connected to the groove (1102), one end of each of the first transmission pins (1103) is fixed to each of the strip plates (802), a driving assembly (12) for rotating the driving ring (1101) is provided on the mounting cover (801), the driving assembly (12) comprises a second inclined groove (1201) provided on the driving ring (1101), a second transmission pin (1202) is slidably connected to the second inclined groove (1201), a transmission plate (1203) is provided inside the mounting cover (801), and the second transmission pin (1202) is slidably connected to the second inclined groove (1201), and a transmission plate (1203) is provided inside the mounting cover (801), and the second transmission pin (1203) is fixed to the strip plates (802). One end of the pin (1202) is fixed to the transmission plate (1203); the mounting cover (801) is provided with a moving assembly (13) for moving the transmission plate (1203) and a second guide assembly (14) for guiding during the movement; the moving assembly (13) comprises a mounting box (1301) which is connected to and fixed on the mounting cover (801); a threaded tube (1302) is rotatably connected to the mounting box (1301); a threaded rod (1303) is threadedly engaged with the threaded tube (1302); one end of the threaded rod (1303) is connected to the transmission plate (1203); One side is fixed, one end of the threaded tube (1302) is located outside the installation box (1301) and is fixed with a driving pin (1304) for driving the threaded tube (1302), the second guide assembly (14) includes two third sleeves (1401) fixed on one side of the transmission plate (1203), the two third sleeves (1401) are respectively located on both sides of the threaded rod (1303), the two third sleeves (1401) are slidably connected with a third slide bar (1402), and one end of the third slide bar (1402) is fixed to the inside of the installation box (1301).

2. A distribution cabinet voltage overload test device according to claim 1, characterized in that: The shielding assembly (3) comprises a mounting frame (301) fixed to the front side of the machine body (101); the start switch (102) is located on the inner side of the mounting frame (301); two groups of slide grooves (302) are provided on the mounting frame (301); baffles (303) for shielding the start switch (102) are slidably connected to the two slide grooves (302); a pressing assembly (5) for pressing the two baffles (303) is provided on one side of the mounting frame (301); and a sliding assembly (4) for guiding the sliding of the baffles (303) during the pressing process is provided on the mounting frame (301).

3. A distribution cabinet voltage overload test device according to claim 2, characterized in that: The extrusion assembly (5) comprises an extrusion plate (501) arranged on one side of the mounting frame (301); a connection assembly (7) for connecting the extrusion plate (501) is arranged on the front side of the machine body (101); two third inclined grooves (502) arranged symmetrically to each other are provided on the extrusion plate (501); two third transmission pins (503) are respectively slidably connected to the two third inclined grooves (502); one end of the two third transmission pins (503) is respectively fixed to one side of the two baffles (303); and a transmission assembly (6) for transmitting the extrusion plate (501) after returning to zero is arranged on the knob (202); The sliding assembly (4) comprises a plurality of fixed blocks (401) fixed on the baffle (303), each of the fixed blocks (401) being slidably connected to a T-shaped rod (402), one end of the T-shaped rod (402) being fixed to the outer side of the installation frame (301).

4. A distribution cabinet voltage overload test device according to claim 3, characterized in that: The transmission assembly (6) comprises inclined surfaces (601) formed on both sides of the upper end of the extrusion plate (501); a positioning groove (602) is formed on the upper end of the extrusion plate (501); the positioning groove (602) is located between the two inclined surfaces (601); and a pushing rod (603) is fixed on the knob (202) for pushing against the inclined surfaces (601).

5. A distribution cabinet voltage overload test device according to claim 4, characterized in that: The connecting assembly (7) comprises a plurality of fourth sleeves (701) fixed to the front side of the machine body (101), each of the fourth sleeves (701) being slidably connected to a fourth sliding rod (702), one end of the fourth sliding rod (702) being fixed to the lower end of the extrusion plate (501), and a third spring (703) being sleeved on the outer side of each of the fourth sleeves (701).

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