A low voltage withdrawable switch cabinet

Abstract

The present invention discloses a low-voltage withdrawable complete switch cabinet, which relates to the technical field of switch cabinets, and comprises a cabinet body, wherein a gas storage box for storing liquid carbon dioxide gas is arranged on the upper part of the cabinet body, a partition is arranged at the lower part of the interior of the gas storage box, an exhaust hole is arranged at the upper part of the partition, and the exhaust hole is respectively connected with the interior of the cabinet body and the gas storage box, and a limit axis is horizontally connected to the upper part of one side of the interior of the cabinet body, and a moving strip is arranged on the outer lateral sliding sleeve of the limit axis. In the low-voltage withdrawable complete switch cabinet, when a fire occurs in the switch cabinet, the temperature of the fire will cause the fuse rope to melt, and then under the elasticity of the reset spring, the liquid carbon dioxide in the gas storage box can be released, so as to achieve fire extinguishing. The fuse rope is distributed on all sides in the switch cabinet, so when a fire occurs at any position in the switch cabinet, the high temperature can be quickly transmitted to the fuse rope to break it, so as to achieve rapid fire extinguishing.

Description

Technical Field

[0001] The invention relates to the technical field of switch cabinets, in particular to a low-voltage withdrawable complete switch cabinet. Background Art

[0002] With the rapid development of my country's economy and the improvement of industrial automation, low-voltage power distribution systems play an increasingly important role in various industrial, commercial and civil buildings. In order to meet the growing demand for electricity, the key equipment in the low-voltage power distribution system - low-voltage withdrawable switchgear came into being.

[0003] When a short circuit occurs in the circuit inside the switch cabinet, a fire is likely to occur, which will cause immeasurable economic losses. However, the traditional low-voltage withdrawable switch cabinet is not equipped with an automatic fire extinguishing function.

[0004] The invention with Chinese patent publication number CN118336568A discloses an electric power control cabinet, which realizes the fire extinguishing function through the change of memory alloy at different temperatures. However, if a fire occurs at the bottom of the control cabinet, the temperature at the bottom is higher, while the temperature at the top is temporarily lower, the memory alloy cannot reach the deformation temperature in a short time, and thus rapid fire extinguishing cannot be achieved.

[0005] Therefore, it is necessary to develop a low-voltage withdrawable switch cabinet that can automatically extinguish fire. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a low-voltage withdrawable complete switch cabinet, which solves the problem that the traditional low-voltage withdrawable complete switch cabinet has no fire extinguishing function.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a low-voltage withdrawable complete switch cabinet, including a cabinet, a gas storage box for storing liquid carbon dioxide gas is arranged on the upper part of the cabinet, a partition is arranged at the lower part of the interior of the gas storage box, an exhaust hole is arranged on the upper part of the partition, and the exhaust hole is respectively connected to the interior of the cabinet and the gas storage box, a limit shaft is horizontally connected to the upper part of one side of the interior of the cabinet, a moving strip is arranged on the outer side of the limit shaft, and a reset spring is also arranged on the outer side of the limit shaft, and both ends of the reset spring are They are respectively connected to one side of the moving bar and the inner side of the cabinet, the upper end of the moving bar is horizontally connected with a baffle, the upper part of the baffle is attached to the bottom of the partition and blocks the exhaust hole, and the bottom of the baffle is provided with a fire extinguishing auxiliary mechanism, and the upper part of the baffle is provided with a through hole corresponding to the fire extinguishing auxiliary mechanism, one side of the lower end of the moving bar is connected with a fuse rope, and the other end of the fuse rope is connected to the lower part of the end of the limit shaft away from the moving bar, the fuse rope will melt when it is above 70 degrees, and when the fuse rope is not melted, the reset spring is in a stretched state.

[0008] Preferably, three guide wheels for pulling and guiding the fuse rope are arranged on the inner side of the cabinet, and the three guide wheels enable the fuse rope to be distributed in four directions in the cabinet.

[0009] Preferably, when the reset spring is reset, the through hole on the baffle just corresponds to the exhaust hole, and when the fuse rope is not broken, the through hole on the baffle is close to one side of the exhaust hole, so that the baffle blocks the exhaust hole.

[0010] Preferably, the fire extinguishing auxiliary mechanism includes a cover shell arranged at the bottom of the baffle, the bottom of the cover shell is closed, and the cover shell corresponds to the position of the through hole, and a moving rod is inserted through one side of the cover shell for transverse sliding, and a convex strip is arranged at the lower part of the end of the moving rod away from the cover shell, and a connecting rod is hinged at the lower end of the convex strip, and an elastic tube communicating with the interior of the cover shell is arranged at the bottom of the cover shell, and an end of the connecting rod away from the convex strip is hinged to one side of the elastic tube, and a driving member for driving the moving rod to shift laterally is arranged inside the cover shell.

[0011] Preferably, the driving member includes a limit bar horizontally arranged on the inner side of the cover casing, a turbine fan corresponding to the through hole is installed at the lower part of one end of the limit bar, a turntable is connected at the bottom center of the turbine fan, an eccentric rod is hinged at the lower edge of the turntable, and the end of the eccentric rod away from its hinge point is hinged to the end of the moving rod away from the convex strip.

[0012] Preferably, a guide rod is provided at the upper portion of one end of the moving rod away from the cover shell, a guide groove corresponding to the guide rod is provided at the bottom of the baffle, and the upper end of the guide rod is provided in the guide groove and is laterally slidably connected to the baffle.

[0013] Preferably, the low-voltage withdrawable switch cabinet also includes an alarm mechanism, which includes an alarm installed on the outside of the cabinet, a contact switch on the inside of the cabinet, and a buffer spring at the lower end of the moving bar away from the fuse rope. The contact switch is electrically connected to the alarm, and a contact block is connected to the end of the buffer spring away from the moving bar. The contact block corresponds to the position of the contact switch. When the reset spring is reset, the contact block just presses the contact switch to turn on the power of the alarm.

[0014] Preferably, a heat dissipation groove is provided on the external side of the cabinet, and a sealing assembly is also provided on the external side of the cabinet, the sealing assembly includes a movable shaft that slides transversely and is inserted into the upper part of the external side of the cabinet, one end of the movable shaft is hinged with a connecting rod 2, and the other end of the movable shaft is connected to the baffle, and the end of the connecting rod 2 away from the movable shaft is hinged with a sealing plate, the sealing plate is attached to one side of the cabinet, and the sealing plate is provided with notches with the same number as the heat dissipation grooves on the cabinet, a protrusion is also provided on one side of the lower part of the sealing plate, the upper part of the protrusion is longitudinally slidably inserted with a limiting rod, the lower end of the limiting rod is connected to the limiting seat, one end of the limiting seat is connected to the outside of the cabinet, and a support spring is also sleeved on the outside of the limit rod, and the two ends of the support spring are respectively connected to the lower part of the protrusion and the upper part of the limiting seat.

[0015] Preferably, when the fuse rope is not blown, the notches on the sealing plate correspond one by one to the heat dissipation slots on the cabinet, which is convenient for ventilation and heat dissipation inside the cabinet. After the fuse rope is blown and the reset spring is at its original length, the moving shaft causes the connecting rod 2 to drive the sealing plate downward, and the notches on the sealing plate and the heat dissipation slots on the cabinet are staggered with each other.

[0016] The present invention provides a low-voltage withdrawable complete switch cabinet, which has the following beneficial effects compared with the prior art:

[0017] This low-voltage withdrawable complete switch cabinet, when a fire occurs in the switch cabinet, the temperature of the fire will cause the fuse rope to melt, and then under the elasticity of the reset spring, the liquid carbon dioxide in the gas tank can be released to achieve fire extinguishing. The fuse rope is distributed on all four sides of the switch cabinet, so when a fire occurs at any position in the switch cabinet, the high temperature can be quickly transmitted to the fuse rope, causing it to break, thereby achieving rapid fire extinguishing.

[0018] When extinguishing a fire, the released liquid carbon dioxide will enter the cover body. The high-speed movement of the liquid carbon dioxide will cause the turbine fan to rotate, thereby driving the moving rod to move. The connecting rod will drive the spring tube to move, so that the released liquid carbon dioxide will be sprayed out from different directions, thereby increasing the fire extinguishing range and improving the fire extinguishing effect.

[0019] For this low-voltage withdrawable switch cabinet, when the fuse rope breaks, the baffle will move the movable shaft, and the movable shaft will cause the second connecting rod to drive the sealing plate to move. The various notches on the sealing plate will be staggered with the heat dissipation grooves on the cabinet body, thereby sealing the heat dissipation grooves and isolating the air, thereby quickly extinguishing the fire in the switch cabinet.

[0020] In this low-voltage withdrawable switchgear, when the fuse rope breaks and the moving bar is reset, the contact block will press the contact switch, turning on the power supply of the alarm, making it sound, reminding personnel so that they can know in time and take remedial measures quickly to reduce economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a schematic diagram of the internal structure of the cabinet of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the fire extinguishing auxiliary mechanism of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the driving member of the present invention;

[0025] Figure 5 It is a schematic structural diagram of the sealing assembly of the present invention.

[0026] In the figure: 1, cabinet; 2, gas storage box; 3, partition; 4, exhaust hole; 5, limit shaft; 6, moving bar; 7, return spring; 8, baffle; 9, fire extinguishing auxiliary mechanism; 91, cover; 92, moving rod; 93, convex strip; 94, connecting rod 1; 95, elastic tube; 96, driving member; 961, limit bar; 962, turbo fan; 963, turntable; 964, eccentric rod; 97, guide rod; 98, guide To the groove; 10, through hole; 11, fuse rope; 12, guide wheel; 13, alarm mechanism; 131, alarm; 132, contact switch; 133, buffer spring; 134, contact block; 14, sealing assembly; 141, moving shaft; 142, connecting rod two; 143, sealing plate; 144, notch; 145, protrusion; 146, limit seat; 147, limit rod; 148, support spring; 15, heat sink. DETAILED DESCRIPTION

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

[0028] See also Figure 1-Figure 5 , the present invention provides four technical solutions:

[0029] For example, see Figure 1 and Figure 2In the embodiment of the present invention, a low-voltage withdrawable complete switch cabinet includes a cabinet 1, a gas storage box 2 for storing liquid carbon dioxide gas is arranged on the upper part of the cabinet 1, a partition 3 is arranged at the lower part of the interior of the gas storage box 2, and an exhaust hole 4 is arranged on the upper part of the partition 3. The exhaust hole 4 is respectively connected to the interior of the cabinet 1 and the gas storage box 2. A limit shaft 5 is horizontally connected to the upper part of the inner side of the cabinet 1. A moving bar 6 is arranged on the outer side of the limit shaft 5, and a reset spring 7 is also arranged on the outer side of the limit shaft 5. The two ends of the reset spring 7 are respectively connected to one side of the moving bar 6. It is connected to the inner side of the cabinet body 1, and the upper end of the movable bar 6 is horizontally connected with a baffle 8. The upper part of the baffle 8 is attached to the bottom of the partition 3 and blocks the exhaust hole 4, and a fire extinguishing auxiliary mechanism 9 is arranged at the bottom of the baffle 8, and a through hole 10 corresponding to the fire extinguishing auxiliary mechanism 9 is arranged at the upper part of the baffle 8. A fuse rope 11 is connected to one side of the lower end of the movable bar 6, and the other end of the fuse rope 11 is connected to the lower part of the end of the limiting shaft 5 away from the movable bar 6. The fuse rope 11 will melt when it is above 70 degrees, and when the fuse rope 11 is not melted, the reset spring 7 is in a stretched state.

[0030] In the above scheme: when a fire occurs in the circuit inside the cabinet 1 due to a short circuit or other reasons, the temperature inside the cabinet 1 will gradually rise. When the temperature reaches 70 degrees and the temperature is transmitted to the fuse rope 11, the fuse rope 11 will break. At this time, the reset spring 7 in the stretched state will reset, thereby driving the moving bar 6 to move, and the moving bar 6 drives the baffle 8 to move. When the reset spring 7 is reset to its original length, the through hole 10 on the baffle 8 is aligned with the exhaust hole 4 on the partition 3. At this time, the liquid carbon dioxide in the gas storage tank 2 will be sprayed out through the fire extinguishing auxiliary mechanism 9 to achieve fire extinguishing.

[0031] For further information, see Figure 2 In the embodiment of the present invention, three guide wheels 12 for pulling and guiding the fuse rope 11 are arranged on the inner side of the cabinet 1. The three guide wheels 12 allow the fuse rope 11 to be distributed in four directions in the cabinet 1. When a fire occurs at any position in the switch cabinet, the temperature of the fire can be quickly transmitted to the fuse rope 11, causing it to break.

[0032] For further information, see Figure 2 In the embodiment of the present invention, when the reset spring 7 is reset, the through hole 10 on the baffle 8 corresponds to the exhaust hole 4. When the fuse rope 11 is not broken, the through hole 10 on the baffle 8 is close to one side of the exhaust hole 4, so that the baffle 8 blocks the exhaust hole 4, so that the liquid carbon dioxide will not be released when no fire occurs.

[0033] The second embodiment is different from the first embodiment in that:

[0034] See also Figure 3In the embodiment of the present invention, the fire extinguishing auxiliary mechanism 9 includes a cover shell 91 arranged at the bottom of the baffle 8, the bottom of the cover shell 91 is closed, and the cover shell 91 corresponds to the position of the through hole 10, and a moving rod 92 is inserted into one side of the cover shell 91 for transverse sliding, and a convex strip 93 is arranged at the lower part of the end of the moving rod 92 away from the cover shell 91, and a connecting rod 94 is hinged at the lower end of the convex strip 93, and an elastic tube 95 communicating with the interior of the cover shell 91 is arranged at the bottom, and an end of the connecting rod 94 away from the convex strip 93 is hinged to one side of the elastic tube 95, and a driving member 96 for driving the moving rod 92 to lateral displacement is arranged inside the cover shell 91.

[0035] See also Figure 3 and Figure 4 In the embodiment of the present invention, the driving member 96 includes a limit bar 961 horizontally arranged on the inner side of the cover 91, and a turbine fan 962 corresponding to the through hole 10 is installed at the lower part of one end of the limit bar 961. A turntable 963 is connected to the bottom center of the turbine fan 962, and an eccentric rod 964 is hinged at the lower edge of the turntable 963. The end of the eccentric rod 964 away from its hinge point is hinged to the end of the moving rod 92 away from the convex strip 93.

[0036] In the above scheme: when the liquid carbon dioxide is released, the liquid carbon dioxide first enters the cover shell 91. When the high-speed moving liquid carbon dioxide passes through the turbine fan 962, the turbine fan 962 will rotate, and the turbine fan 962 will drive the turntable 963 to rotate. The turntable 963 makes the eccentric rod 964 drive the moving rod 92 to continuously move back and forth horizontally. The convex strip 93 on the moving rod 92 will make the connecting rod 94 drive the elastic tube 95 to continuously swing back and forth, and the liquid carbon dioxide will be ejected from the elastic tube 95. Under the continuous swing of the elastic tube 95, the liquid carbon dioxide will be released from all directions, thereby increasing its fire extinguishing range.

[0037] For further information, see Figure 3 and Figure 4 In the embodiment of the present invention, a guide rod 97 is provided at the upper part of one end of the moving rod 92 away from the cover shell 91, and a guide groove 98 corresponding to the guide rod 97 is provided at the bottom of the baffle 8. The upper end of the guide rod 97 is arranged in the guide groove 98 and is connected to the baffle 8 for transverse sliding. When the moving rod 92 moves, the guide rod 97 will slide in the guide groove 98, thereby playing a role of limiting and guiding the moving rod 92.

[0038] Embodiment 3 is different from Embodiment 1 in that:

[0039] See also Figure 2In the embodiment of the present invention, the low-voltage withdrawable switch cabinet also includes an alarm mechanism 13, which includes an alarm 131 installed on the outside of the cabinet 1, a contact switch 132 on the inside of the cabinet 1, and a buffer spring 133 on the side of the lower end of the moving bar 6 away from the fuse rope 11. The contact switch 132 is electrically connected to the alarm 131, and the end of the buffer spring 133 away from the moving bar 6 is connected to a contact block 134. The contact block 134 corresponds to the position of the contact switch 132. When the reset spring 7 is reset, the contact block 134 just presses the contact switch 132 to turn on the power of the alarm 131.

[0040] In the above scheme: when the reset spring 7 drives the moving bar 6 to reset, the contact block 134 will move toward the direction of the contact switch 132, thereby resisting the contact switch 132, turning on the power of the alarm 131, making it sound, and alerting personnel.

[0041] The fourth embodiment is different from the first embodiment in that:

[0042] See also Figure 1 and Figure 5 In the embodiment of the present invention, a heat dissipation slot 15 is provided on one side of the outside of the cabinet 1, and a sealing assembly 14 is also provided on one side of the outside of the cabinet 1. The sealing assembly 14 includes a moving shaft 141 that is slidably inserted into the upper part of one side of the outside of the cabinet 1 laterally, one end of the moving shaft 141 is hinged with a connecting rod 142, and the other end of the moving shaft 141 is connected to the baffle 8, and the end of the connecting rod 142 away from the moving shaft 141 is hinged with a sealing plate 143, and the sealing plate 143 is attached to one side of the cabinet 1, and the sealing plate The same number of notches 144 as the heat dissipation slots 15 on the cabinet 1 is provided on 143, and a protrusion 145 is also provided on one side of the lower part of the sealing plate 143. The upper part of the protrusion 145 is longitudinally slidably inserted with a limiting rod 147, and the lower end of the limiting rod 147 is connected to a limiting seat 146, one end of the limiting seat 146 is connected to the outer side of the cabinet 1, and a support spring 148 is also sleeved on the outside of the limiting rod 147, and the two ends of the support spring 148 are respectively connected to the lower part of the protrusion 145 and the upper part of the limiting seat 146.

[0043] See also Figure 1 and Figure 5 In the embodiment of the present invention, when the fuse rope 11 is not melted, each notch 144 on the sealing plate 143 corresponds to the heat dissipation slots 15 on the cabinet 1 one by one, which is convenient for ventilation and heat dissipation of the interior of the cabinet 1. After the fuse rope 11 is melted and the reset spring 7 is at the original length, the movable shaft 141 causes the connecting rod 2 142 to drive the sealing plate 143 to move downward, and each notch 144 on the sealing plate 143 and the heat dissipation slots 15 on the cabinet 1 are staggered with each other.

[0044] In the above scheme: when the fuse rope 11 breaks and the baffle 8 moves, the baffle 8 drives the movable shaft 141 to move. Under the elasticity of the supporting spring 148, the connecting rod 142 at one end of the movable shaft 141 drives the sealing plate 143 to move downward, so that the various notches 144 on the sealing plate 143 are staggered with the heat dissipation slots 15 on the cabinet 1, thereby playing a sealing role and isolating the air, so that the fire in the cabinet 1 can be quickly extinguished.

[0045] Working principle: When a fire occurs in the circuit inside the cabinet 1 due to a short circuit or other reasons, the temperature inside the cabinet 1 will gradually rise. When the temperature reaches 70 degrees and the temperature is transmitted to the fuse rope 11, the fuse rope 11 will break. At this time, the reset spring 7 in the stretched state will reset, thereby driving the moving bar 6 to move, and the moving bar 6 drives the baffle 8 to move. When the reset spring 7 is reset to its original length, the through hole 10 on the baffle 8 is aligned with the exhaust hole 4 on the partition 3. At this time, the liquid carbon dioxide in the gas storage tank 2 will be sprayed out through the fire extinguishing auxiliary mechanism 9 to achieve fire extinguishing work;

[0046] When the liquid carbon dioxide is released, the liquid carbon dioxide first enters the housing 91. When the high-speed liquid carbon dioxide passes through the turbine fan 962, the turbine fan 962 rotates, and the turbine fan 962 drives the turntable 963 to rotate. The turntable 963 drives the eccentric rod 964 to drive the moving rod 92 to continuously move back and forth horizontally. The convex strip 93 on the moving rod 92 drives the connecting rod 1 94 to drive the elastic tube 95 to continuously swing back and forth, and the liquid carbon dioxide will be ejected from the elastic tube 95. Under the continuous swing of the elastic tube 95, the liquid carbon dioxide will be released from all directions, thereby increasing its fire extinguishing range.

[0047] When the fuse rope 11 breaks and the baffle 8 moves, the baffle 8 drives the moving shaft 141 to move. Under the elasticity of the supporting spring 148, the connecting rod 142 at one end of the moving shaft 141 drives the sealing plate 143 to move downward, so that the notches 144 on the sealing plate 143 are staggered with the heat dissipation slots 15 on the cabinet 1, thereby playing a sealing role and isolating the air, so that the fire in the cabinet 1 can be quickly extinguished;

[0048] When the reset spring 7 drives the moving bar 6 to reset, the contact block 134 will move toward the contact switch 132, thereby resisting the contact switch 132, connecting the power of the alarm 131, making it sound, and alerting the personnel.

[0049] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A low-voltage withdrawable switch cabinet, comprising a cabinet body (1), characterized in that: The upper part of the cabinet (1) is provided with a gas storage box (2) for storing liquid carbon dioxide gas, a partition (3) is provided at the lower part of the gas storage box (2), an exhaust hole (4) is provided at the upper part of the partition (3), and the exhaust hole (4) is respectively connected to the inside of the cabinet (1) and the gas storage box (2), a limit shaft (5) is horizontally connected to the upper part of the inner side of the cabinet (1), a moving bar (6) is provided on the outer side of the limit shaft (5), and a return spring (7) is also provided on the outer side of the limit shaft (5), and the two ends of the return spring (7) are respectively connected to one side of the moving bar (6) and the inner side of the cabinet (1), and the return spring (7) is provided on the outer side of the limit shaft (5). The upper end of the movable bar (6) is horizontally connected to a baffle (8), the upper part of the baffle (8) is attached to the bottom of the partition (3) and blocks the exhaust hole (4), and the bottom of the baffle (8) is provided with a fire extinguishing auxiliary mechanism (9), and the upper part of the baffle (8) is provided with a through hole (10) corresponding to the fire extinguishing auxiliary mechanism (9), one side of the lower end of the movable bar (6) is connected to a fuse rope (11), and the other end of the fuse rope (11) is connected to the lower part of the end of the limit shaft (5) away from the movable bar (6), the fuse rope (11) will melt when the angle is above 70 degrees, and when the fuse rope (11) is not melted, the reset spring (7) is in a stretched state; Three guide wheels (12) for pulling and guiding the fuse rope (11) are arranged on the inner side of the cabinet (1), and the three guide wheels (12) enable the fuse rope (11) to be distributed in four directions inside the cabinet (1); When the reset spring (7) is reset, the through hole (10) on the baffle (8) corresponds exactly to the exhaust hole (4); when the fuse rope (11) is not broken, the through hole (10) on the baffle (8) is close to one side of the exhaust hole (4), so that the baffle (8) blocks the exhaust hole; The fire extinguishing auxiliary mechanism (9) comprises a cover shell (91) arranged at the bottom of the baffle (8), the bottom of the cover shell (91) is closed, and the position of the cover shell (91) corresponds to the position of the through hole (10), and a moving rod (92) is inserted and slidably penetrated transversely on one side of the cover shell (91), a convex strip (93) is arranged at the lower part of the end of the moving rod (92) away from the cover shell (91), and a connecting rod (94) is hinged at the lower end of the convex strip (93), and an elastic tube (95) communicating with the inside of the cover shell (91) is arranged at the bottom of the cover shell (91), and an end of the connecting rod (94) away from the convex strip (93) is hinged to one side of the elastic tube (95), and a driving member (96) for driving the moving rod (92) to move transversely is arranged inside the cover shell (91); The driving member (96) comprises a limit bar (961) horizontally arranged on the inner side of the cover shell (91); a turbine fan (962) corresponding to the through hole (10) is installed at the lower part of one end of the limit bar (961); a rotating disk (963) is connected to the center of the bottom circle of the turbine fan (962); an eccentric rod (964) is hinged at the lower edge of the rotating disk (963); and an end of the eccentric rod (964) away from its hinge point is hinged to an end of the moving rod (92) away from the convex strip (93); A guide rod (97) is provided at the upper portion of one end of the moving rod (92) away from the cover shell (91), a guide groove (98) corresponding to the guide rod (97) is provided at the bottom of the baffle (8), and the upper end of the guide rod (97) is arranged in the guide groove (98) and is laterally slidably connected to the baffle (8).

2. A low-voltage withdrawable switch cabinet according to claim 1, characterized in that: The low-voltage withdrawable switch cabinet further comprises an alarm mechanism (13), the alarm mechanism (13) comprising an alarm (131) mounted on the outside of the cabinet (1), a contact switch (132) on the inside of the cabinet (1), and a buffer spring (133) at the lower end of the moving bar (6) away from the fuse rope (11), the contact switch (132) being electrically connected to the alarm (131), and a contact block (134) being connected to the end of the buffer spring (133) away from the moving bar (6), the contact block (134) corresponding to the position of the contact switch (132), and when the reset spring (7) is reset, the contact block (134) just presses the contact switch (132) to turn on the power supply of the alarm (131).

3. The low-voltage withdrawable switch cabinet according to claim 1 is characterized in that: A heat dissipation groove (15) is provided on one side of the exterior of the cabinet (1), and a sealing assembly (14) is also provided on one side of the exterior of the cabinet (1). The sealing assembly (14) comprises a movable shaft (141) which is slidably inserted transversely through an upper portion of one side of the exterior of the cabinet (1), one end of the movable shaft (141) is hingedly connected to a second connecting rod (142), and the other end of the movable shaft (141) is connected to a baffle (8), and one end of the second connecting rod (142) which is away from the movable shaft (141) is hingedly connected to a sealing plate (143), and the sealing plate (143) is attached to one side of the cabinet (1), and the sealing plate (143) The cabinet (1) is provided with notches (144) having the same number as the heat dissipation slots (15) on the cabinet (1), and a protrusion (145) is further provided on one side of the lower portion of the sealing plate (143). The upper portion of the protrusion (145) is longitudinally slidably inserted through a limit rod (147), the lower end of the limit rod (147) is connected to a limit seat (146), one end of the limit seat (146) is connected to the outer side of the cabinet (1), and a support spring (148) is further sleeved on the outer side of the limit rod (147), the two ends of the support spring (148) are respectively connected to the lower portion of the protrusion (145) and the upper portion of the limit seat (146).

4. A low-voltage withdrawable switch cabinet according to claim 3, characterized in that: When the fuse rope (11) is not melted, the notches (144) on the sealing plate (143) correspond to the heat dissipation slots (15) on the cabinet (1) one by one, so as to facilitate ventilation and heat dissipation inside the cabinet (1). After the fuse rope (11) is melted and the reset spring (7) is at its original reset length, the movable shaft (141) causes the second connecting rod (142) to drive the sealing plate (143) to move downward, and the notches (144) on the sealing plate (143) and the heat dissipation slots (15) on the cabinet (1) are staggered with each other.

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