A low voltage drawer type switchgear

Abstract

The present invention discloses a low-voltage drawer-type complete switchgear, which relates to the technical field of drawer-type complete switchgear, and aims to solve the technical problem that the existing low-voltage drawer-type complete switchgear has a single function of opening a drawer unit, including a low-voltage switch cabinet; a pull-out cavity is arranged at the middle end of the low-voltage switch cabinet; a locking cavity and a control cavity are arranged on both sides of the pull-out cavity; and the pull-out cavity is separated from the locking cavity and the control cavity by a column; a plurality of loading drawers are arranged inside the pull-out cavity through a guide rail; a locking assembly is arranged at the end of the loading drawer through a drawer panel; and a locking column is hingedly arranged on the column relative to the locking cavity. The present invention effectively improves the functionality and safety of use of the low-voltage drawer-type complete switchgear by realizing two different ways of opening the drawer unit under different temperature environments.

Description

Technical Field

[0001] The present invention relates to the technical field of drawer-type complete switch equipment, and more particularly to a low-voltage drawer-type complete switch equipment. Background Art

[0002] Low-voltage drawer-type switchgear is an electrical equipment used in low-voltage power distribution systems, mainly used for centralized control, protection and distribution of electrical energy.

[0003] Drawer units: These are the core components of the equipment. They house various electrical components, such as circuit breakers, contactors, relays, and fuses. Connected to the cabinet via guide rails, the drawers can be easily inserted and removed, facilitating installation, maintenance, and repair. Each drawer unit functions as an independent functional module, enabling various electrical control and protection functions, such as motor control, lighting distribution, and power distribution.

[0004] In the existing low-voltage drawer-type complete switchgear, the drawer units are mostly opened manually or by electric drive components. The existing low-voltage drawer-type complete switchgear that uses electric drive components to open the drawer units has low functionality. In normal use, it is opened by a device such as a screw rod, but at the same time it is restricted from opening quickly. This leads to an emergency situation such as a high-temperature short circuit of the control screw motor and a fire inside the cabinet, which seriously affects the rescue of the low-voltage drawer-type complete switchgear and is likely to cause serious damage. In view of this, we propose a low-voltage drawer-type complete switchgear. Summary of the Invention

[0005] The object of the present invention is to provide a low-voltage drawer-type complete switchgear to solve the technical problem of the single function of opening the drawer unit in the existing low-voltage drawer-type complete switchgear.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a low-voltage drawer-type complete switchgear, comprising a low-voltage switch cabinet; a pull-out cavity is provided at the middle end of the low-voltage switch cabinet; a locking cavity and a control cavity are provided on both sides of the pull-out cavity; and the pull-out cavity is separated from the locking cavity and the control cavity by columns; a plurality of loading drawers are provided inside the pull-out cavity through guide rails; a locking assembly is provided at the end of the loading drawer through a drawer panel; a locking column is hingedly provided on the column relative to the locking cavity; wherein the locking column and the locking assembly The components are hooked and matched; a multi-stage drive mechanism is provided at a position where the column is separated from the control cavity; a screw drive assembly is provided on the side of the loading drawer and is located relatively in the control cavity through a mounting seat; the movable end of the screw drive assembly is provided with an adjustment mechanism; the input end of the screw drive assembly is movably connected to the multi-stage drive mechanism; a temperature control release mechanism is provided on the loading drawer, and one of the output ends of the temperature control release mechanism is slidably connected to the locking column through a connecting rod A; and the other output end of the temperature control release mechanism is connected to the adjustment mechanism through a connecting rod B.

[0007] The present invention can maintain the torsion spring torsional constraint at room temperature by setting a temperature-controlled release mechanism, so that the connecting rod A and the connecting rod B respectively exert force on the locking assembly and the screw drive assembly to perform conventional locking and meshing connection, and drive the plurality of screw drive assemblies for power input through the multi-stage drive mechanism, so that the loading drawer is unfolded for conventional automatic opening and closing operation, which is convenient for maintenance and opening and closing the loading drawer at a certain position by numerical control. In addition, by causing the temperature-controlled release mechanism to release the torsion spring torsional force under conditions such as high temperature or fire, the connecting rod A and the connecting rod B respectively loosen and release the meshing force on the locking assembly and the screw drive assembly, and the loading drawer in the fused position is ejected under the action of the spring, which facilitates rapid locating of the abnormal position and staggered separation of the abnormal working area from the relatively normal working area to avoid cross interference. At the same time, this method is completely based on the mechanical structure. When the low-voltage drawer-type complete switchgear as a whole encounters fire, leakage, etc. and its internal control circuit cannot work normally, the automatic ejection can be achieved based on the mechanical structure, effectively improving the functionality and safety of the low-voltage drawer-type complete switchgear.

[0008] Preferably, the locking assembly includes a lock handle arranged on the drawer panel; a lock core is provided at the output end of the lock handle (which is an existing structure and will not be described in detail); a lock tongue is provided at the output end of the lock core; and a connecting protrusion is provided on the lock tongue.

[0009] Preferably, the locking column is in a "J" shape, and an adapting sliding groove is provided on a side of the locking column relatively close to the loading drawer.

[0010] Preferably, the multi-stage drive mechanism includes a servo drive motor arranged in the control cavity; the output end of the servo drive motor is vertically provided with several drive seats in sequence; two mutually meshing transmission bevel gears are distributed at right angles on the drive seat; wherein, the output end of the servo drive motor is vertically provided with a drive shaft; the drive shaft is key-connected with several horizontally arranged transmission bevel gears; wherein, the output end of the vertically arranged transmission bevel gear is provided with a key tooth A; the opposite surface of the key tooth A is provided with a key tooth group B; the key tooth group B is provided with a push rod installed and connected to the screw drive assembly.

[0011] Preferably, the screw drive assembly includes a guide rail seat arranged in the control cavity through a mounting seat; a driving screw is rotatably provided on the guide rail seat through a bearing seat; and the driving screw is key-connected to the key tooth group B; a connecting fixing seat is provided on the guide rail seat through a slider; a driving sleeve is provided on the connecting fixing seat; and the driving sleeve is elastically connected to the guide rail seat through a spring.

[0012] Preferably, the adjustment mechanism includes a slide block fixed to the side of the connecting and fixing seat; wherein the slide block is fixedly connected to the loading drawer; the surface of the slide block is horizontally provided with a long groove A; a hinge head is provided on the top of the slide block; an "L"-shaped driving arm is movably provided on the hinge head; a long groove B is provided at the input end of the driving arm; and a long groove C is provided at the output end of the driving arm, and an adapter groove connected to the long groove C is provided at the bottom of the driving arm; and a force-bearing convex pin shaft is passed through the adapter groove; the connecting rod B is passed through the slide block, and a force-bearing axis is provided on the connecting rod B at the overlap of the long groove A and the long groove B.

[0013] Preferably, the temperature-controlled release mechanism includes a fixed seat arranged in the loading drawer; a central axis is provided on the surface of the fixed seat; a limiting block is provided on the side of the central axis; a dynamic drive shaft is rotatably provided inside the limiting block; a rotation groove of a shape-matched shape is provided on the inner wall of the limiting block relative to the large end of the dynamic drive shaft; and a hot-melt pin is screwed onto the limiting block relative to the rotation groove; wherein, the fixed seat is elastically connected to the dynamic drive shaft through a torsion spring; wherein, the hot-melt pin is made of Wood's alloy, and the cross-section of the hot-melt pin is honeycomb-shaped; wherein, an auxiliary pendulum block is provided at the output end of the dynamic drive shaft, and the auxiliary pendulum block is respectively provided with long slot blocks hooked with the connecting rod A and the connecting rod B.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention can maintain the torsion spring torsional constraint at room temperature by setting a temperature-controlled release mechanism, so that the connecting rod A and the connecting rod B respectively perform conventional locking and meshing connection on the locking assembly and the screw drive assembly, and drive the plurality of screw drive assemblies to input power through a multi-stage drive mechanism, so that the loading drawer is unfolded for conventional automatic opening and closing operation, which is convenient for maintenance and opening and closing a loading drawer at a certain position by numerical control; and by causing the temperature-controlled release mechanism to release the torsion spring torsional constraint under conditions such as high temperature or fire, so that the connecting rods A and B respectively perform conventional locking and meshing connection on the locking assembly and the screw drive assembly, and drive the plurality of screw drive assemblies to input power ... and The locking assembly and the screw drive assembly loosen and disengage the force, and the loading drawer at the fuse position is popped out under the action of the spring, which makes it easy to quickly find the abnormal position and separate the abnormal working area from the relatively normal working area to avoid cross interference. At the same time, this method is completely based on the mechanical structure. When the low-voltage drawer-type switchgear as a whole has fire, leakage, etc. and its internal control circuit cannot work normally, it can be automatically popped out based on the mechanical structure; effectively improve the functionality and safety of the low-voltage drawer-type switchgear.

[0016] 2. The present invention realizes basic locking by hooking the "J"-shaped locking column with the connecting protrusion on the lock tongue; and by hingedly connecting the column and the locking column, when in a high-temperature loose state, the locking column rotates and deviates to separate from the connecting protrusion to achieve a contact locking effect, thereby preventing the loading drawer from being unable to pop out in the conventional locking state.

[0017] 3. The present invention can make the key tooth group B at that position fit in contact with the key tooth A through the stroke of a single or multiple push rods, and cooperate with the power output of the servo drive motor to make the screw drive assembly at that position rotate. In this way, the opening and closing of a single or multiple loading drawers can be effectively controlled synchronously, effectively improving the operating efficiency.

[0018] 4. The present invention is based on the elastic connection between the drive sleeve and the guide rail seat through a spring, so that the drive sleeve and the drive screw are not released when the adjustment mechanism is in contact with the drive sleeve, thereby achieving an elastic restoring effect to push the loading drawer.

[0019] 5. The present invention works through the relative stroke of the connecting rod B, causing the force-bearing shaft to drive the driving arm to rotate, and cooperates with the long groove C and the adapter groove provided at the end of the driving arm to lift the force-bearing cam shaft upward, causing the end of the force-bearing cam shaft to separate from the screw groove of the driving screw, thereby realizing the elastic restoring effect to push the loading drawer.

[0020] 6. In the present invention, based on the torsional action of the torsion spring, the big end of the dynamic drive shaft is constrained and braked in cooperation with the hot-melt pin limit to achieve conventional manual unlocking, and the motor screw drives the drawer to open. When the hot-melt pin is melted under high temperature, the constraint on the big end of the dynamic drive shaft is released, causing the dynamic drive shaft, the auxiliary swing block, and the long slot block to swing as a whole. The swinging long slot block causes the connecting rod A to drag, causing the locking column to rotate at the hinge point and contact the locking assembly to lock. The connecting rod B pushes, causing the stressed cam shaft to be lifted upward, and the end of the stressed cam shaft is separated from the screw groove of the drive screw. The spring pushes the drive sleeve to drive the loading drawer to open as a whole to achieve a high-temperature emergency opening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention from another perspective;

[0023] Figure 3 For the present invention Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the locking column of the present invention;

[0025] Figure 5 This is a schematic diagram of the internal top view of the locking assembly of the present invention;

[0026] Figure 6 For the present invention Figure 5 A schematic diagram of the partially enlarged structure at point B in the middle;

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the loading drawer of the present invention;

[0028] Figure 8 This is a schematic diagram of the disassembly structure of the loading drawer of the present invention;

[0029] Figure 9 This is a schematic diagram of the disassembled three-dimensional structure of the temperature control release mechanism of the present invention;

[0030] Figure 10 For the present invention Figure 8 A schematic diagram of the partially enlarged structure at point C in the middle;

[0031] Figure 11 It is a schematic diagram of the three-dimensional structure of the driving arm of the present invention;

[0032] Figure 12 It is a schematic diagram of the three-dimensional structure of the multi-stage driving mechanism of the present invention.

[0033] Description of the numbers in the figure:

[0034] 1. Low-voltage switchgear cabinet; 3. Loading drawer; 4. Locking assembly; 5. Locking column; 6. Temperature control release mechanism; 7. Connecting rod A; 8. Connecting rod B; 9. Multi-stage drive mechanism; 10. Screw drive assembly; 11. Adjustment mechanism;

[0035] 301, drawer panel;

[0036] 401, lock handle; 402, lock core; 403, lock tongue; 404, structural protrusion;

[0037] 501, adapting chute;

[0038] 601, fixed seat; 602, center axis; 603, limit block; 6031, rotating groove; 604, dynamic drive shaft; 6041, auxiliary swing block; 6042, long slot block; 605, hot melt pin;

[0039] 801, load-bearing axis;

[0040] 901, servo drive motor; 9011, drive shaft; 902, drive seat; 903, transmission bevel gear; 9031, key tooth A; 904, key tooth group B; 905, push rod;

[0041] 1001, guide rail seat; 1002, driving screw; 1003, driving sleeve; 1004, connecting fixed seat;

[0042] 1101, slide block; 11011, long slot A; 11012, hinged joint; 1102, driving arm; 11021, long slot B; 11022, long slot C; 11023, adapter slot; 1103, force-bearing cam shaft. DETAILED DESCRIPTION

[0043] like Figures 1 to 12As shown, the present invention relates to a low-voltage drawer-type complete switchgear, comprising a low-voltage switch cabinet 1; a drawer cavity is provided at the middle end of the low-voltage switch cabinet 1; a locking cavity and a control cavity are provided on both sides of the drawer cavity; and the drawer cavity is separated from the locking cavity and the control cavity by columns; a plurality of loading drawers 3 are provided inside the drawer cavity through guide rails; a locking assembly 4 is provided at the end of the loading drawer 3 through a drawer panel 301; a locking column 5 is hingedly provided at the column relative to the locking cavity; wherein the locking column 5 is hooked and matched with the locking assembly 4; the columns are connected A multi-stage drive mechanism 9 is provided at the control chamber partition position; a screw drive assembly 10 is provided on the side of the loading drawer 3 relative to the control chamber through a mounting seat; the movable end of the screw drive assembly 10 is provided with an adjustment mechanism 11; the input end of the screw drive assembly 10 is movably connected to the multi-stage drive mechanism 9; a temperature-controlled release mechanism 6 is provided on the loading drawer 3, and one output end of the temperature-controlled release mechanism 6 is slidably connected to the locking column 5 via a connecting rod A7; and the other output end of the temperature-controlled release mechanism 6 is connected to the adjustment mechanism 11 via a connecting rod B8.

[0044] The present invention can maintain the torsion spring torsional constraint at room temperature by setting the temperature control release mechanism 6, so that the connecting rod A7 and the connecting rod B8 respectively exert the force of conventional locking and meshing connection on the locking assembly 4 and the screw drive assembly 10, and drive the plurality of screw drive assemblies 10 to input power through the multi-stage drive mechanism 9, so that the loading drawer 3 is unfolded for conventional automatic opening and closing operation, which is convenient for maintenance and opening and closing a certain position of the loading drawer 3 by numerical control; and by releasing the torsion spring torsional constraint under conditions such as high temperature or fire, the connecting rod A7 and the connecting rod B8 can be opened and closed by the temperature control release mechanism 6. 8 respectively loosens and releases the engagement force of the locking component 4 and the screw drive component 10, and the loading drawer 3 in the fuse position is popped out under the action of the spring, which is convenient for quickly finding the abnormal position and staggering the abnormal working area and the relatively normal working area to avoid cross interference. At the same time, this method is completely based on the mechanical structure. When the low-voltage drawer-type switchgear as a whole has fire, leakage, etc. and its internal control circuit cannot work normally, it can be automatically popped out based on the mechanical structure; effectively improving the functionality and safety of the low-voltage drawer-type switchgear.

[0045] In an embodiment of the present invention, the locking assembly 4 includes a lock handle 401 arranged on the drawer panel 301; a lock core 402 is provided at the output end of the lock handle 401. The lock core 402 in the present invention is an existing structure and will not be described in detail; a lock tongue 403 is provided at the output end of the lock core 402; and a connecting protrusion 404 is provided on the lock tongue 403.

[0046] In this embodiment of the present invention, the locking post 5 is J-shaped, and an adapting slot 501 is provided on the side of the locking post 5 that is relatively close to the loading drawer 3. This invention achieves basic locking by hooking the J-shaped locking post 5 with the connecting protrusion 404 on the lock tongue 403. Furthermore, the hinged connection between the upright and the locking post 5 allows the locking post 5 to rotate and deflect in the event of a high-temperature release, separating from the connecting protrusion 404 and achieving a contact locking effect, thus preventing the loading drawer 3 from being unable to be ejected under normal locking conditions.

[0047] In an embodiment of the present invention, the multi-stage drive mechanism 9 includes a servo drive motor 901 arranged in a control cavity; the output end of the servo drive motor 901 is vertically provided with a plurality of drive seats 902 in sequence; two mutually meshing transmission bevel gears 903 are distributed at right angles on the drive seat 902; wherein, the output end of the servo drive motor 901 is vertically provided with a drive shaft 9011; the drive shaft 9011 is key-connected with a plurality of horizontally arranged transmission bevel gears 903; wherein, the output end of the vertically arranged transmission bevel gear 903 is provided with a key tooth A9031; the opposite surface of the key tooth A9031 is provided with a key tooth group B904; the key tooth group B904 is provided with a push rod 905 installed and connected to the screw drive assembly 10. The present invention works through the stroke of a single or multiple push rods 905, so that the key tooth group B904 at this position is in contact with the key tooth A9031, and cooperates with the power output of the servo drive motor 901 to rotate the screw drive assembly 10 at this position. In this way, the opening and closing of the loading drawer 3 can be effectively controlled by a single or multiple synchronous controls, effectively improving the operating efficiency.

[0048] In an embodiment of the present invention, the screw drive assembly 10 includes a guide rail seat 1001 disposed within a control cavity via a mounting seat; a drive screw 1002 is rotatably mounted on the guide rail seat 1001 via a bearing seat; the drive screw 1002 is keyed to the key tooth set B904; a connecting and fixing seat 1004 is mounted on the guide rail seat 1001 via a slider; a drive sleeve 1003 is mounted on the connecting and fixing seat 1004; and the drive sleeve 1003 is elastically connected to the guide rail seat 1001 via a spring. The present invention is based on the elastic connection of the drive sleeve 1003 to the guide rail seat 1001 via a spring, so that when the adjustment mechanism 11 is in contact with the drive sleeve 1003, the drive sleeve 1003 and the drive screw 1002 are not in contact, thereby achieving an elastic restoring effect to push the loading drawer 3.

[0049] In an embodiment of the present invention, the adjustment mechanism 11 includes a slide block 1101 fixed to the side of the connection fixing seat 1004; wherein the slide block 1101 is fixedly connected to the loading drawer 3; the slide block 1101 surface is horizontally provided with a long groove A11011; a hinge 11012 is provided on the top of the slide block 1101; an "L"-shaped driving arm 1102 is movably provided on the hinge 11012; the input end of the driving arm 1102 A long slot B11021 is provided; and a long slot C11022 is provided at the output end of the driving arm 1102, and an adapting slot 11023 connected to the long slot C11022 is provided at the bottom of the driving arm 1102; and a force-bearing convex pin shaft 1103 is passed through the adapting slot 11023; the connecting rod B8 is passed through the slide block 1101, and a force-bearing shaft 801 is provided at the position where the connecting rod B8 coincides with the long slot A11011 and the long slot B11021. The present invention works through the relative stroke of the connecting rod B8, causing the force-bearing shaft 801 to drive the driving arm 1102 to rotate, and cooperates with the long groove C11022 and the adapter groove 11023 set at the end of the driving arm 1102 to lift the force-bearing cam shaft 1103 upward, causing the end of the force-bearing cam shaft 1103 to separate from the screw groove of the driving screw rod 1002, thereby realizing the elastic restoring effect to push the loading drawer 3.

[0050] In the embodiment of the present invention, the temperature control release mechanism 6 includes a fixed seat 601 arranged in the loading drawer 3; a central axis 602 is provided on the surface of the fixed seat 601; a limit block 603 is provided on the side of the central axis 602; a dynamic drive shaft 604 is rotatably provided inside the limit block 603; a rotation groove 6031 with a shape matching the large end of the dynamic drive shaft 604 is provided on the inner wall of the limit block 603; and a hot melt pin 605 is screwed to the position of the limit block 603 relative to the rotation groove 6031; In the figure, the fixed seat 601 is elastically connected to the dynamic drive shaft 604 through a torsion spring; wherein, the hot melt pin 605 is made of Wood's alloy, and the cross section of the hot melt pin 605 is honeycomb-shaped, wherein the hot melt pin 605 arranged in a honeycomb shape has good radial support and is convenient for hot melting; wherein, the output end of the dynamic drive shaft 604 is provided with an auxiliary pendulum block 6041, and the auxiliary pendulum block 6041 is respectively provided with a long slot block 6042 hooked with the connecting rod A7 and the connecting rod B8. In the present invention, based on the torsional action of the torsion spring, the large end of the dynamic drive shaft 604 is restrained and braked in cooperation with the hot-melt pin 605 to achieve conventional manual unlocking, and the motor screw drives the drawer to open. When the hot-melt pin 605 is hot-melted under high temperature, the constraint on the large end of the dynamic drive shaft 604 is released, causing the dynamic drive shaft 604, the auxiliary swing block 6041, and the long slot block 6042 to swing as a whole. The swinging long slot block 6042 causes the connecting rod A7 to drag, causing the locking column 5 to rotate at the hinge point and contact the locking assembly 4 to lock the state, and the connecting rod B8 pushes, causing the stressed convex pin shaft 1103 to be lifted upward, and the end of the stressed convex pin shaft 1103 is separated from the screw groove of the driving screw 1002, and the spring pushes the driving sleeve 1003 to drive the loading drawer 3 to open as a whole to achieve a high-temperature emergency opening effect.

[0051] Working principle: This embodiment provides a low-voltage drawer-type complete switchgear. The following steps are used:

[0052] S100, basic installation and setting: installing the low-voltage drawer-type switchgear set by manual and mechanical equipment;

[0053] S200, operation processing: installing and operating the low-voltage drawer-type complete switchgear according to the required circuit connection;

[0054] S300, start working:

[0055] If a conventional opening operation for manual debugging and testing is performed: the staff first rotates the lock handle 401 as required, causing the lock core 402 to drive the lock tongue 403 to rotate, and the connecting protrusion 404 is separated from the locking column 5; then, through the control computer installed on the low-voltage drawer-type complete switchgear, the drawer unit to be tested and debugged is selected. At this time, the push rod 905 at the adapted position performs a stroke operation, so that the key tooth group B904 at this position is in contact with the key tooth A9031, and the power output of the servo drive motor 901 causes the screw drive assembly 10 at this position to rotate. In this way, the opening and closing of a single or multiple loading drawers 3 can be effectively realized by synchronously controlling the opening and closing;

[0056] If the adaptive opening work is performed under the emergency environment of high temperature or fire: when the hot melt pin 605 is hot-melted under the high temperature state, the constraint of the big end of the dynamic drive shaft 604 is released; causing the dynamic drive shaft 604, the auxiliary swing block 6041, and the long slot block 6042 to swing as a whole, and the swinging long slot block 6042 causes the connecting rod A7 to drag, causing the locking column 5 to rotate at the hinge point and contact the locking component 4 to lock the state, and the connecting rod B8 pushes, causing the force-bearing cam shaft 1103 to be lifted upward and the end of the force-bearing cam shaft 1103 to separate from the screw groove of the drive screw 1002, and the spring can be used to push the drive sleeve 1003, the adjustment mechanism 11 and the loading drawer 3 to open as a whole.

[0057] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A low voltage drawer type switchgear, characterized in that: It comprises a low-voltage switch cabinet (1); a drawer cavity is arranged at the middle end of the interior of the low-voltage switch cabinet (1); a locking cavity and a control cavity are arranged on both sides of the drawer cavity; Furthermore, the drawer cavity is separated from the locking cavity and the control cavity by pillars; A plurality of loading drawers (3) are arranged inside the drawer cavity via guide rails; a locking assembly (4) is arranged at the end of the loading drawer (3) via a drawer panel (301); a locking column (5) is hingedly arranged on the upright column relative to the locking cavity; Wherein, the locking column (5) is hooked and matched with the locking assembly (4); A multi-stage drive mechanism (9) is provided at a position where the column is separated from the control chamber; a screw drive assembly (10) is provided at a side of the loading drawer (3) and is located in the control chamber via a mounting seat; an adjustment mechanism (11) is provided at a movable end of the screw drive assembly (10); and an input end of the screw drive assembly (10) is movably connected to the multi-stage drive mechanism (9); The loading drawer (3) is provided with a temperature control release mechanism (6), and one output end of the temperature control release mechanism (6) is slidably connected to the locking column (5) via a connecting rod A (7); and the other output end of the temperature control release mechanism (6) is connected to the adjustment mechanism (11) via a connecting rod B (8); The multi-stage drive mechanism (9) comprises a servo drive motor (901) arranged in the control cavity; a plurality of drive seats (902) are arranged vertically in sequence at the output end of the servo drive motor (901); two mutually meshing bevel gears (903) are arranged at right angles on the drive seat (902); wherein a drive shaft (9011) is arranged vertically at the output end of the servo drive motor (901); the drive shaft (9011) is key-connected to a plurality of horizontally arranged drive bevel gears (903); Wherein, a key tooth A (9031) is provided at the output end of the vertically arranged transmission bevel gear (903); A key tooth group B (904) is arranged on the surface opposite to the key tooth A (9031); and a push rod (905) which is mounted and connected to the screw drive assembly (10) is arranged on the key tooth group B (904).

2. A low-voltage drawer-type complete switchgear according to claim 1, characterized in that: The locking assembly (4) comprises a lock handle (401) arranged on the drawer panel (301); a lock core (402) is provided at the output end of the lock handle (401); a lock tongue (403) is provided at the output end of the lock core (402); and a connecting protrusion (404) is provided on the lock tongue (403).

3. A low-voltage drawer-type complete switchgear according to claim 2, characterized in that: The locking column (5) is in a "J" shape, and an adapting slide groove (501) is provided on a side of the locking column (5) relatively close to the loading drawer (3).

4. A low-voltage drawer-type complete switchgear according to claim 3, characterized in that: The screw drive assembly (10) comprises a guide rail seat (1001) arranged in the control cavity via a mounting seat; a driving screw (1002) is rotatably arranged on the guide rail seat (1001) via a bearing seat; and the driving screw (1002) is key-connected to the key tooth group B (904); A connecting and fixing seat (1004) is arranged on the guide rail seat (1001) via a sliding block; a driving sleeve (1003) is arranged on the connecting and fixing seat (1004); and the driving sleeve (1003) is elastically connected to the guide rail seat (1001) via a spring.

5. A low-voltage drawer-type complete switchgear according to claim 4, characterized in that: The adjustment mechanism (11) comprises a slide block (1101) fixed to a side of the connection fixing seat (1004); Wherein, the slide block (1101) is fixedly connected to the loading drawer (3); The surface of the slide block (1101) is horizontally provided with a long groove A (11011); the top of the slide block (1101) is provided with a hinge joint (11012); An "L"-shaped driving arm (1102) is movably provided on the hinge joint (11012); a long slot B (11021) is provided at the input end of the driving arm (1102); a long slot C (11022) is provided at the output end of the driving arm (1102); and an adapting slot (11023) communicating with the long slot C (11022) is provided at the bottom of the driving arm (1102); Furthermore, a force-bearing convex pin shaft (1103) is inserted into the adapting groove (11023); The connecting rod B (8) is inserted into the slide block (1101), and a force-bearing axis (801) is provided on the connecting rod B (8) at the overlapped position of the long groove A (11011) and the long groove B (11021).

6. A low-voltage drawer-type complete switchgear according to claim 5, characterized in that: The temperature control release mechanism (6) comprises a fixed seat (601) arranged in the loading drawer (3); a central axis (602) is arranged on the surface of the fixed seat (601); a limit block (603) is arranged on the side of the central axis (602); a dynamic drive shaft (604) is rotatably arranged inside the limit block (603); a rotation groove (6031) with a shape matching the large end of the dynamic drive shaft (604) is arranged on the inner wall of the limit block (603); and a hot melt pin (605) is screwed on the limit block (603) at a position relative to the rotation groove (6031); wherein the fixed seat (601) is elastically connected to the dynamic drive shaft (604) via a torsion spring; Wherein, the hot melt pin (605) is made of Wood's alloy, and the cross section of the hot melt pin (605) is honeycomb-shaped; The output end of the dynamic drive shaft (604) is provided with an auxiliary swing block (6041), and the auxiliary swing block (6041) is provided with a long slot block (6042) to which the connecting rod A (7) and the connecting rod B (8) are hooked.

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