Low-voltage drawer-type switchgear assembly

Abstract

The invention discloses a low-voltage drawer-type complete switch device, relates to the technical field of drawer-type complete switch devices, and aims to solve the technical problem that the function of opening a drawer unit of an existing low-voltage drawer-type complete switch device is single. A drawing cavity is formed in the middle end in the low-voltage switch cabinet body; a locking cavity and a control cavity are formed in the two sides of the drawing cavity correspondingly. The drawing cavity is separated from the locking cavity and the control cavity through stand columns. A plurality of loading drawers are arranged in the drawing cavity through guide rails; a locking assembly is arranged at the end part of the loading drawer through a drawer panel; a locking structural column is hinged to the position, opposite to the locking cavity, of the stand column. According to the invention, the functionality and the use safety of the low-voltage drawer-type switchgear assembly are effectively improved by realizing two different drawer unit opening modes in different temperature environments.

Description

Technical Field

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

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

[0003] Drawer unit: This is the core component of the equipment. Various electrical components are installed in the drawer, such as circuit breakers, contactors, relays, fuses, etc. The drawer is connected to the cabinet through a guide rail and can be easily inserted and withdrawn, which is convenient for installation, maintenance and repair. Each drawer unit is equivalent to an independent functional module, which can realize different electrical control and protection functions, such as motor control, lighting distribution, power distribution, etc.

[0004] In the existing low-voltage drawer-type switchgear, the drawer units are mostly opened manually or by electric drive components. The existing low-voltage drawer-type switchgear that uses electric drive components to open the drawer units has low functionality. In conventional 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 emergency situations such as high temperature short circuit of the control screw rod motor and fire inside the cabinet, which seriously affects the rescue of the low-voltage drawer-type switchgear and is likely to cause serious damage. In view of this, we propose a low-voltage drawer-type switchgear. Summary of the invention

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

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a low-voltage drawer-type complete switch equipment, comprising 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; a locking column is hingedly arranged 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 driving mechanism is arranged at a position where the column is separated from the control cavity; a screw driving assembly is arranged on the side of the loading drawer relatively to the control cavity through a mounting seat; an adjusting mechanism is arranged at the movable end of the screw driving assembly; an input end of the screw driving assembly is movably connected with the multi-stage driving mechanism; a temperature control releasing mechanism is arranged on the loading drawer, and one of the output ends of the temperature control releasing mechanism is slidably connected with the locking column through a connecting rod A; and the other output end of the temperature control releasing mechanism is connected with the adjusting mechanism through a connecting rod B.

[0007] The present invention can maintain the torsion constraint of the torsion spring at normal temperature by setting the temperature control release mechanism, so that the connecting rod A and the connecting rod B respectively perform the force of conventional locking and meshing connection on the locking assembly and the screw drive assembly, and drive a plurality of screw drive assemblies to input power through the multi-stage drive mechanism, so that the loading drawer is unfolded to perform 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; and by causing the temperature control release mechanism to release the torsion spring torsion under high temperature and fire conditions, so that 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 at the fuse position is popped out under the action of the spring, which is convenient for quickly finding the abnormal position, and for staggering and separating the abnormal working area from the relatively normal working area to avoid cross interference. At the same time, the method is completely implemented based on the mechanical structure. When the low-voltage drawer-type complete switchgear as a whole has a 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 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 (it is an existing structure and therefore 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 slide 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; a plurality of drive seats are arranged vertically in sequence on the output end of the servo drive motor; two mutually meshing bevel gears are distributed at right angles on the drive seat; wherein a drive shaft is arranged vertically on the output end of the servo drive motor; the drive shaft is key-connected with a plurality of horizontally arranged transmission bevel gears; wherein a key tooth A is arranged on the output end of the vertically arranged transmission bevel gear; a key tooth group B is arranged on the opposite surface of the key tooth A; a push rod installed and connected to the screw drive assembly is arranged on the key tooth group B.

[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 and fixing seat is provided on the guide rail seat through a slider; a driving sleeve is provided on the connecting and 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 at 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 with the long groove C is provided at the bottom of the driving arm; and a force-bearing convex pin shaft is penetrated in the adapter groove; the connecting rod B is penetrated in the slide block, and a force-bearing shaft is provided on the connecting rod B relative to 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 limit block is provided on the side of the central axis; a dynamic drive shaft is rotatably provided inside the limit block; a rotation groove of a shape-matched shape is provided on the inner wall of the limit block relative to the large end of the dynamic drive shaft; and a hot-melt pin is screwed on the limit 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 prepared by 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 groove 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: 1. The present invention can maintain the torsion spring torsion constraint at room temperature by setting the temperature control release mechanism, so that the connecting rod A and the connecting rod B respectively perform conventional locking and meshing connection force on the locking assembly and the screw drive assembly, and drive a plurality of screw drive assemblies to input power through the multi-stage drive mechanism, so that the loading drawer is unfolded to perform 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 control release mechanism to release the torsion spring torsion under high temperature or fire conditions, so that the connecting rod A and the connecting rod B respectively The locking assembly and the screw drive assembly loosen and release the engagement force, and the loading drawer at 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 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 improving the functionality and safety of the low-voltage drawer-type switchgear.

[0015] 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 setting the column and the locking column, in the high-temperature loose state, the locking column is rotated and offset to separate from the connecting protrusion to achieve a contact locking effect, thereby avoiding the situation where the loading drawer cannot be ejected in the conventional locking state.

[0016] 3. The present invention can make the key tooth group B at this 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 this position rotate. In this way, the opening and closing of a single or multiple synchronously controlled loading drawers can be effectively realized, effectively improving the operating efficiency.

[0017] 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 drive sleeve is in the contact force state of the adjustment mechanism, and the elastic restoring effect can be achieved to push the loading drawer.

[0018] 5. The present invention works through the relative stroke of the connecting rod B, so that the force-bearing shaft drives the driving arm to rotate, and cooperates with the long groove C and the adapter groove set at the end of the driving arm to lift the force-bearing convex pin shaft upward, so that the end of the force-bearing convex pin shaft is separated from the screw groove of the driving screw, thereby realizing the elastic restoring force effect to push the loading drawer.

[0019] 6. In the present invention, based on the torsion effect of the torsion spring, the big end of the dynamic drive shaft is restrained 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 be dragged, 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 convex pin shaft to be lifted upward, and the end of the stressed convex pin shaft is separated from the screw groove of the driving screw. The spring pushes the driving sleeve to drive the loading drawer to open as a whole to achieve a high-temperature emergency opening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention from another viewing angle; Figure 3 For the present invention Figure 2 A schematic diagram of the partially enlarged structure at center A; Figure 4 It is a schematic diagram of the three-dimensional structure of the locking column of the present invention; Figure 5 It is a schematic diagram of the internal top view of the locking assembly of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the partially enlarged structure at B in the middle; Figure 7 It is a schematic diagram of the three-dimensional structure of the loading drawer of the present invention; Figure 8 This is a schematic diagram of the loading drawer split structure of the present invention; Fig. 9 It is a schematic diagram of the split three-dimensional structure of the temperature control release mechanism of the present invention; Fig.10 For the present invention Figure 8 A schematic diagram of the partially enlarged structure at C in the middle; Fig.11 It is a schematic diagram of the three-dimensional structure of the driving arm of the present invention; Fig.12 It is a schematic diagram of the three-dimensional structure of the multi-stage driving mechanism of the present invention.

[0021] Description of the numbers in the figure: 1. Low-voltage switch 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; 301, drawer panel; 401, lock handle; 402, lock core; 403, lock tongue; 404, structural connection protrusion; 501, adapting chute; 601, fixed seat; 602, central axis; 603, limit block; 6031, rotating groove; 604, dynamic drive shaft; 6041, auxiliary swing block; 6042, long slot block; 605, hot melt pin; 801, load bearing axis; 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; 1001, guide rail seat; 1002, driving screw rod; 1003, driving sleeve; 1004, connecting fixed seat; 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 convex pin shaft. DETAILED DESCRIPTION

[0022] like Figures 1 to 12 As shown, the present invention relates to a low-voltage drawer-type complete switch equipment, comprising a low-voltage switch cabinet 1; a drawer cavity is arranged at the middle end of the low-voltage switch cabinet 1; a locking cavity and a control cavity are arranged 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 arranged inside the drawer cavity through guide rails; a locking assembly 4 is arranged at the end of the loading drawer 3 through a drawer panel 301; a locking column 5 is hingedly arranged 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 to each other A multi-stage driving mechanism 9 is provided at the partition position of the control chamber; a screw drive assembly 10 is provided on the side of the loading drawer 3 relatively located in the control chamber through a mounting seat; an adjusting mechanism 11 is provided at the movable end of the screw drive assembly 10; an input end of the screw drive assembly 10 is movably connected to the multi-stage driving mechanism 9; a temperature control release mechanism 6 is provided on the loading drawer 3, and one of the output ends of the temperature control release mechanism 6 is slidably connected to the locking column 5 through a connecting rod A7; and the other output end of the temperature control release mechanism 6 is connected to the adjusting mechanism 11 through a connecting rod B8.

[0023] The present invention can maintain the torsion spring torsion constraint at room temperature by setting the temperature control release mechanism 6, so that the connecting rod A7 and the connecting rod B8 respectively perform conventional locking and meshing connection force 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 to perform conventional automatic opening and closing operations, which is convenient for maintenance and opening and closing of a loading drawer 3 at a certain position by numerical control; and by causing the temperature control release mechanism 6 to release the torsion spring torsion under high temperature or fire conditions, so that 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 assembly 4 and the screw drive assembly 10, and the loading drawer 3 at 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.

[0024] 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 therefore 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.

[0025] In the embodiment of the present invention, the locking column 5 is in a "J" shape, and an adapting slide groove 501 is provided on the side of the locking column 5 relatively close to the loading drawer 3. The present invention realizes basic locking work by hooking the "J"-shaped locking column 5 with the connecting protrusion 404 on the lock tongue 403; and by hingedly setting the column and the locking column 5, in the high-temperature loose state, the locking column 5 is rotated and offset to separate from the connecting protrusion 404 to achieve a contact locking effect, thereby avoiding the situation that the loading drawer 3 cannot be ejected in the conventional locking state.

[0026] In an embodiment of the present invention, the multi-stage drive mechanism 9 includes a servo drive motor 901 arranged in a control cavity; a plurality of drive seats 902 are vertically arranged in sequence at the output end of the servo drive motor 901; two mutually meshing transmission bevel gears 903 are distributed at right angles on the drive seat 902; wherein, a drive shaft 9011 is vertically arranged at the output end of the servo drive motor 901; the drive shaft 9011 is key-connected with a plurality of horizontally arranged transmission bevel gears 903; wherein, a key tooth A9031 is arranged at the output end of the vertically arranged transmission bevel gear 903; a key tooth group B904 is arranged on the opposite surface of the key tooth A9031; and a push rod 905 installed and connected to the screw drive assembly 10 is arranged on the key tooth group B904. 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 the power output of the servo drive motor 901 is coordinated to make the screw drive assembly 10 at this position rotate. In this way, the opening and closing of the loading drawer 3 can be effectively controlled by a single or multiple synchronous controls, and the operating efficiency is effectively improved.

[0027] In an embodiment of the present invention, the screw drive assembly 10 includes a guide rail seat 1001 arranged in the control cavity through a mounting seat; a driving screw 1002 is rotatably arranged on the guide rail seat 1001 through a bearing seat; and the driving screw 1002 is key-connected with the key tooth group B904; a connecting and fixing seat 1004 is arranged on the guide rail seat 1001 through a slider; 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 through a spring. The present invention is based on the elastic connection of the driving sleeve 1003 with the guide rail seat 1001 through a spring, so that the driving sleeve 1003 does not contact the driving screw 1002 when the adjusting mechanism 11 is in contact with the driving sleeve 1003, so that the elastic restoring force effect can be achieved to push the loading drawer 3.

[0028] In the 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 surface of the slide block 1101 is horizontally provided with a long groove A11011; a hinged head 11012 is provided on the top of the slide block 1101; an "L"-shaped driving arm 1102 is movably provided on the hinged head 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 with 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, so that the force-bearing shaft 801 drives 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 convex pin shaft 1103 upward, so that the end of the force-bearing convex pin shaft 1103 is separated from the screw groove of the driving screw rod 1002, thereby realizing the elastic restoring force effect to push the loading drawer 3.

[0029] 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 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 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 an auxiliary pendulum block 6041 is arranged at the output end of the dynamic drive shaft 604, and the auxiliary pendulum block 6041 is respectively provided with a long slot block 6042 hooked with a connecting rod A7 and a connecting rod B8. In the present invention, based on the torsion action of the torsion spring, the hot-melt pin 605 is limited to constrain and brake the big end of the dynamic drive shaft 604 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 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. 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 enter a locked state. 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.

[0030] Working principle: This embodiment provides a low-voltage drawer-type complete switchgear. The following are the steps for use: S100, basic installation and setting: installing the low-voltage drawer-type complete switchgear by manual and mechanical equipment; S200, operation processing: installing and operating the low-voltage drawer-type complete switchgear according to the required circuit connection; S300, start working: If the conventional opening work of manual debugging and testing is carried out: the staff first rotates the lock handle 401 as required to cause 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 the drawer unit required for testing and debugging is selected by installing a control computer on the low-voltage drawer-type complete switch equipment, and the push rod 905 at the matching position performs a stroke operation at this time, 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 is coordinated to make the screw drive assembly 10 at this position rotate, and in this way, the opening and closing of a single or multiple synchronously controlled loading drawers 3 can be effectively realized; 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 on the big end of the dynamic drive shaft 604 is released; the dynamic drive shaft 604, the auxiliary swing block 6041, and the long slot block 6042 are swung as a whole, and the connecting rod A7 is dragged by the swinging long slot block 6042, so that the locking column 5 is rotated at the hinge point and contacts the locking assembly 4 to be locked, and the connecting rod B8 is pushed, so that the force-bearing convex pin shaft 1103 is lifted upward, and the end of the force-bearing convex pin shaft 1103 is separated from the screw groove of the driving screw rod 1002, and the driving sleeve 1003, the adjustment mechanism 11 and the loading drawer 3 can be pushed to open as a whole through the spring.

[0031] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope 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).

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 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).

5. A low-voltage drawer-type complete switchgear according to claim 4, 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.

6. A low-voltage drawer-type complete switchgear according to claim 5, 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).

7. A low voltage drawer type switchgear according to claim 6, 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.

Images