A high and low voltage power cabinet for electric power engineering

Abstract

The invention discloses a high and low voltage power cabinet for electric power engineering, and relates to the technical field of high and low voltage power cabinets, comprising: a power distribution cabinet body, wherein a revolving door is rotatably installed on the inner wall of the power distribution cabinet body, a slide rail is slidably installed on the inner wall of the power distribution cabinet body, and a slider is slidably installed on the inner wall of the slide rail; a quick release device, wherein the quick release device is arranged on the surface of the slider, and comprises a mounting frame, a slide plate, a control switch, an L-shaped plate, an elastic telescopic plate, a triangular block and a short rod, wherein the control switch moves along the slide plate in a direction close to the mounting frame, which drives the L-shaped plate to move in a direction close to the mounting frame, and the L-shaped plate moves in a direction close to the mounting frame and contacts the inclined surface of the triangular block, wherein the mounting frame is fixedly installed on the surface of the slider, the slide plate is fixedly installed on the surface of the mounting frame, and the control switch is slidably installed on the surface of the slide plate, thereby ensuring that the control switch does not move during installation and ensuring the stability of the installation.

Description

Technical Field

[0001] The invention relates to the technical field of high and low voltage power cabinets, in particular to a high and low voltage power cabinet for electric power engineering. Background Art

[0002] High and low voltage power cabinets are devices that connect high or low voltage cables. High and low voltage power cabinets are used for switching, control or protection in power generation, transmission, distribution, power conversion and consumption of power systems.

[0003] The patent with patent announcement number CN220732012U relates to a high and low voltage power cabinet for power engineering, including a cabinet body, two hair dryers are fixedly installed on the bottom of the inner wall of the cabinet body, a ventilation net is fixedly installed on the inner wall of the cabinet body, a controller is fixedly installed on the front of the cabinet door, a placement mechanism is arranged inside the cabinet body, and a handle is fixedly installed on the front of the cabinet door. The high and low voltage power cabinet for power engineering has a placement mechanism arranged inside the cabinet body. During assembly, the required electrical components are locked with the threaded holes on the top of the fixed block by screws, and the fixed block is passed through the corresponding assembly hole according to the position where the electrical components need to be installed. At this time, the card block will shrink into the card slot when passing through the assembly hole, and the card block will be reset after passing through the assembly hole, thereby fixing the electrical components on the fixed block on the assembly board, solving the problem that the position of electrical components in high and low voltage power cabinets on the market cannot be adjusted at will.

[0004] In the above patent, the fixing block is passed through the corresponding assembly hole according to the position where the electrical component needs to be installed. At this time, the card block will shrink into the card slot when passing through the assembly hole. After passing through the assembly hole, the card block is reset, thereby fixing the electrical component on the fixing block on the assembly plate, solving the problem that the position of electrical components in high and low voltage power cabinets on the market cannot be adjusted at will. However, the electrical components cannot be fixed and removed after installation, which may result in a lot of time spent on disassembling the electrical components when maintenance is required, affecting maintenance efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a high and low voltage power cabinet for electric power engineering, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high and low voltage power cabinet for electric power engineering, comprising: a distribution cabinet body, a revolving door is rotatably installed on the inner wall of the distribution cabinet body, a slide rail is slidably installed on the inner wall of the distribution cabinet body, and a slider is slidably installed on the inner wall of the slide rail; a quick release device, the quick release device is arranged on the surface of the slider, and includes a mounting frame, a slide plate, a control switch, an L-shaped plate, an elastic telescopic plate, a triangular block and a short rod, the control switch moves along the slide plate in a direction close to the mounting frame, which drives the L-shaped plate to move in a direction close to the mounting frame, and the L-shaped plate moves in a direction close to the mounting frame and contacts the inclined surface of the triangular block, the mounting frame is fixedly installed on the surface of the slider, the slide plate is fixedly installed on the surface of the mounting frame, the control switch is slidably installed on the surface of the slide plate, the L-shaped plate is fixedly installed on the surface of the control switch, a groove is opened on the surface of the mounting frame, the elastic telescopic plate is fixedly installed on the bottom of the inner wall of the groove, the triangular block is fixedly installed on the free end of the elastic telescopic plate, and the short rod is fixedly installed on the surface of the triangular block.

[0007] According to the above technical solution, an elastic telescopic rod is fixedly installed on the surface of the mounting frame, and a clamping block is fixedly installed on the free end of the elastic telescopic rod. The clamping block is arranged under the short rod. When the short rod is pulled downward, the short rod will contact the clamping block when it moves downward, and the short rod will push the clamping block to move in the direction of the elastic telescopic rod.

[0008] According to the above technical solution, the L-shaped plate and the triangular block are in the same horizontal plane, so that the triangular block can limit the L-shaped plate, and a sliding groove is provided on the surface of the sliding plate to improve the stability of the installation.

[0009] The mounting bracket has an L-shaped rod, a connecting seat, a hinged rod, a sliding seat, a sliding plate, a sliding rod, a clamping plate, a connecting plate, and a trapezoidal block. The sliding plate is controlled by a switch to move along the sliding plate toward the mounting bracket to contact the sliding rod. The control switch pushes the sliding rod to move toward the mounting bracket. The movement of the sliding rod toward the mounting bracket drives the connecting seat to move toward the inside of the square groove. The sliding rod slides through the surface of the mounting bracket. The L-shaped rod is fixedly installed at the bottom of the sliding rod. The surface of the mounting bracket is provided with a square groove. The L-shaped rod is slidably installed in the square groove. The inner wall of the L-shaped groove, the connecting seat is fixedly mounted on the surface of the L-shaped rod, the sliding seat is slidably mounted on the inner wall of the square groove, one end of the hinged rod is rotatably mounted on the inner wall of the connecting seat, and the other end of the hinged rod is rotatably mounted on the inner wall of the sliding seat, the sliding plate is fixedly mounted on the surface of the sliding seat, the sliding rod is fixedly mounted on the bottom of the sliding plate, the clamping plate is rotatably mounted on the surface of the sliding rod, the connecting plate is fixedly mounted on the surface of the clamping plate, and the trapezoidal block is fixedly mounted on the bottom of the mounting frame. The clamping plate will be driven to move upward during the downward movement of the clamping plate, and the upward movement of the connecting plate will contact the trapezoidal block, which will push the connecting plate to rotate through the trapezoidal block, and the rotation of the connecting plate will drive the clamping plate to rotate in the direction of the connecting line.

[0010] According to the above technical solution, a No. 1 spring is arranged between the sliding rod and the mounting frame, and the sliding rod is reset by the No. 1 spring. A No. 2 spring is arranged between the L-shaped rod and the square groove, and the L-shaped rod is reset by the No. 2 spring. A No. 3 spring is arranged between the sliding seat and the square groove, and the sliding seat is reset by the No. 3 spring.

[0011] According to the above technical solution, a No. 1 torsion spring is arranged between the clamping plate and the slide rod, and the clamping plate is driven to reset by the No. 1 torsion spring, and the connecting plate is arranged below the trapezoidal block.

[0012] According to the above technical solution, the limiting device includes a connecting frame, a pulley, a fixed block and a triangular plate. The connecting frame is driven upward by the upward movement of the sliding rod. The upward movement of the connecting frame will drive the pulley to move upward. The upward movement of the pulley will contact the inclined surface of the triangular plate. The pulley is guided by the inclined surface of the triangular plate. The connecting frame is fixedly installed on the surface of the sliding rod, the pulley is rotatably installed on the inner wall of the connecting frame, the fixed block is fixedly installed on the bottom of the sliding rail, and the triangular plate is fixedly installed on the bottom of the fixed block.

[0013] According to the above technical solution, a push rod is fixedly installed on the top of the connecting frame, a rotating groove is opened on the surface of the trapezoidal block, a rotating shaft is rotatably installed on the inner wall of the rotating groove, a rotating plate is fixedly installed on the surface of the rotating shaft, and a limiting plate is fixedly installed on the surface of the rotating shaft. The upward movement of the connecting frame will drive the push rod to move upward, the upward movement of the push rod will contact the rotating plate, the upward movement of the push rod will push the rotating plate to rotate upward, the upward rotation of the rotating plate will drive the rotating shaft to rotate, the rotation of the rotating shaft will drive the limiting plate to rotate, and the downward rotation of the limiting plate will limit the connecting plate.

[0014] According to the above technical solution, a No. 2 torsion spring is arranged between the rotating groove and the rotating shaft, and the No. 2 torsion spring is used to drive the rotating shaft to reset, and the push rod is arranged below the rotating plate.

[0015] The present invention provides a high and low voltage power cabinet for electric power engineering, which has the following beneficial effects:

[0016] (1) The invention adjusts the installation position by sliding the mounting frame to prevent the installation of other electrical components from being affected by an unreasonable installation position. At the same time, the elastic telescopic plate will drive the triangular block to reset and limit the L-shaped plate, ensuring that the control switch will not move during installation, thereby ensuring the stability of the installation. The short rod moves downward and contacts the card block, which pushes the card block to move in the direction of the elastic telescopic rod. When the short rod is stuck in the card block, the short rod is limited, and there is no need to hold the short rod with your hand all the time, thereby improving the convenience of installation. When reinstallation is required, you only need to pull the card block away from the short rod, and the card block will release the limit on the short rod, so that the triangular block can limit the L-shaped plate again, thereby facilitating installation and disassembly.

[0017] (2) In this invention, the connecting wire at the bottom of the control switch can be pulled upward by sliding the clamping plate upward, so as to prevent the connecting wire from being pulled during disassembly or installation, resulting in poor contact between the control switch and the connecting wire. Short circuits may occur during operation, affecting the normal power supply of the distribution cabinet. At the same time, the clamping plate will drive the connecting plate to move upward during the downward movement of the clamping plate. The upward movement of the connecting plate will contact the trapezoidal block, which will push the connecting plate to rotate. The rotation of the connecting plate will drive the clamping plate to rotate in the direction of the connecting wire. The connecting wire is clamped by the clamping plate to prevent the control switch and the connecting wire from becoming loose due to direct pulling, thereby affecting the normal operation of the equipment.

[0018] (3) This invention limits the mounting frame by clipping it between the fixed blocks to prevent the mounting frame from being continuously moved after installation is completed, which would cause the connection line and the control switch to become loose, easily causing a short circuit in the equipment and affecting the normal operation of the equipment. At the same time, the upward movement of the mounting frame will drive the push rod to move upward, and the upward movement of the push rod will contact the rotating plate. The upward movement of the push rod will push the rotating plate to rotate upward, and the upward rotation of the rotating plate will drive the rotating shaft to rotate. The rotation of the rotating shaft will drive the limit plate to rotate. The downward rotation of the limit plate will limit the connecting plate, preventing the clamping plate from clamping the connecting wire stably enough, resulting in the inability to effectively clamp the connecting wire when pulling, affecting the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the slide rail and the mounting frame of the present invention;

[0022] Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement of part A;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the mounting frame of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the sliding plate and the sliding rod of the present invention;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the trapezoidal block of the present invention.

[0026] In the figure: 1. distribution cabinet body; 2. revolving door; 3. slide rail; 4. slider; 5. mounting frame; 6. slide plate; 7. control switch; 8. L-shaped plate; 9. elastic telescopic plate; 10. triangular block; 11. short rod; 12. elastic telescopic rod; 13. clamping block; 141. sliding rod; 142. L-shaped rod; 143. connecting seat; 144. hinged rod; 145. sliding seat; 146. sliding plate; 147. sliding rod; 148. clamping plate; 149. connecting plate; 1410. trapezoidal block; 151. connecting frame; 152. pulley; 153. fixed block; 154. triangular plate; 155. push rod; 156. rotating shaft; 157. rotating plate; 158. limit plate. 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 4 One embodiment of the present invention is: a high and low voltage power cabinet for electric power engineering, comprising: a distribution cabinet body 1, a revolving door 2 is rotatably installed on the inner wall of the distribution cabinet body 1, a slide rail 3 is slidably installed on the inner wall of the distribution cabinet body 1, and a slider 4 is slidably installed on the inner wall of the slide rail 3; a quick release device, the quick release device is arranged on the surface of the slider 4, and comprises a mounting frame 5, a slide plate 6, a control switch 7, an L-shaped plate 8, an elastic expansion plate 9, a triangular block 10 and a short rod 11. The mounting frame 5 is fixedly installed on the surface of the slider 4, the slide plate 6 is fixedly installed on the surface of the mounting frame 5, the control switch 7 is slidably installed on the surface of the slide plate 6, the L-shaped plate 8 is fixedly installed on the surface of the control switch 7, a groove is opened on the surface of the mounting frame 5, the elastic expansion plate 9 is fixedly installed on the bottom of the inner wall of the groove, the triangular block 10 is fixedly installed on the free end of the elastic expansion plate 9, and the short rod 11 is fixedly installed on the surface of the triangular block 10, so as to ensure that the control switch 7 will not move during installation and ensure the stability of the installation.

[0029] An elastic telescopic rod 12 is fixedly installed on the surface of the mounting frame 5, and a clamping block 13 is fixedly installed on the free end of the elastic telescopic rod 12. The clamping block 13 is arranged below the short rod 11. When the short rod 11 is inserted into the clamping block 13, the short rod 11 is limited in position, and there is no need to hold the short rod 11 by hand all the time, thereby improving the convenience of installation.

[0030] The L-shaped plate 8 and the triangular block 10 are in the same horizontal plane, so that the triangular block 10 can limit the L-shaped plate 8. A sliding groove is provided on the surface of the slide plate 6 to improve the stability of the installation.

[0031] When the present embodiment is working, when installing the control switch 7, the installation position can be adjusted by sliding the mounting frame 5 to prevent the unreasonable installation position from affecting the installation of other electrical components. At the same time, moving the control switch 7 along the slide plate 6 toward the mounting frame 5 will drive the L-shaped plate 8 to move toward the mounting frame 5. The L-shaped plate 8 moves toward the mounting frame 5 and contacts the inclined surface of the triangular block 10. The L-shaped plate 8 moves toward the mounting frame 5 and squeezes the triangular block 10 to slide downward. The downward sliding of the triangular block 10 will cause the free end of the elastic telescopic plate 9 to contract. When the L-shaped plate 8 is separated from the triangular block 10, the elastic telescopic plate 9 will drive the triangular block 10 to reset to the L-shaped plate. 8 is limited to ensure that the control switch 7 will not move during installation, thereby ensuring the stability of the installation. At the same time, when the control switch 7 needs to be removed, the short rod 11 is pulled downward to contact the block 13 when the short rod 11 moves downward, and the block 13 is pushed to move in the direction of the elastic telescopic rod 12. When the short rod 11 is stuck in the block 13, the short rod 11 is limited, and there is no need to pull the short rod 11 by hand all the time, thereby improving the convenience of installation. When reinstallation is required, it is only necessary to pull the block 13 in the direction away from the short rod 11, and the block 13 will release the limitation on the short rod 11, so that the triangular block 10 can limit the L-shaped plate 8 again, thereby facilitating installation and disassembly.

[0032] See also Figure 1-Figure 7 On the basis of the above-mentioned embodiment, in another embodiment of the present invention, the inner wall of the mounting frame 5 is provided with an anti-pull wire device for preventing the wire from being pulled, and a limiting device is provided on the mounting frame 5. The anti-pull wire device includes a sliding rod 141, an L-shaped rod 142, a connecting seat 143, a hinged rod 144, a sliding seat 145, a sliding plate 146, a sliding rod 147, a clamping plate 148, a connecting plate 149 and a trapezoidal block 1410, so as to prevent the connecting wire from being pulled during disassembly or installation, resulting in poor contact between the control switch 7 and the connecting wire, and a short circuit may occur during operation, thereby affecting the normal power supply of the power distribution cabinet. The sliding rod 141 slides through the surface of the mounting frame 5, and the L-shaped rod 142 is fixedly installed at the bottom of the sliding rod 141. A square groove is provided, an L-shaped rod 142 is slidably mounted on the inner wall of the square groove, a connecting seat 143 is fixedly mounted on the surface of the L-shaped rod 142, a sliding seat 145 is slidably mounted on the inner wall of the square groove, one end of a hinged rod 144 is rotatably mounted on the inner wall of the connecting seat 143, the other end of the hinged rod 144 is rotatably mounted on the inner wall of the sliding seat 145, a sliding plate 146 is fixedly mounted on the surface of the sliding seat 145, a sliding rod 147 is fixedly mounted on the bottom of the sliding plate 146, a clamping plate 148 is rotatably mounted on the surface of the sliding rod 147, a connecting plate 149 is fixedly mounted on the surface of the clamping plate 148, and a trapezoidal block 1410 is fixedly mounted on the bottom of the mounting frame 5 to prevent direct pulling from causing looseness between the control switch 7 and the connecting line, thereby affecting the normal operation of the equipment.

[0033] A No. 1 spring is arranged between the sliding rod 141 and the mounting frame 5, and the sliding rod 141 is reset by the No. 1 spring. A No. 2 spring is arranged between the L-shaped rod 142 and the square groove, and the L-shaped rod 142 is reset by the No. 2 spring. A No. 3 spring is arranged between the sliding seat 145 and the square groove, and the sliding seat 145 is reset by the No. 3 spring.

[0034] A torsion spring No. 1 is arranged between the clamping plate 148 and the sliding rod 147 , and the clamping plate 148 is driven to return to its original position by the torsion spring No. 1. The connecting plate 149 is arranged below the trapezoidal block 1410 .

[0035] The limiting device includes a connecting frame 151, a pulley 152, a fixed block 153 and a triangular plate 154. The connecting frame 151 is fixedly installed on the surface of the slide rod 147, the pulley 152 is rotatably installed on the inner wall of the connecting frame 151, the fixed block 153 is fixedly installed on the bottom of the slide rail 3, and the triangular plate 154 is fixedly installed on the bottom of the fixed block 153. The mounting frame 5 is limited by being clamped between the fixed blocks 153 to prevent the position of the mounting frame 5 from being continuously moved after the installation is completed, which may cause looseness between the connecting line and the control switch 7, easily causing a short circuit in the equipment and affecting the normal operation of the equipment.

[0036] A push rod 155 is fixedly installed on the top of the connecting frame 151, a rotating groove is opened on the surface of the trapezoidal block 1410, a rotating shaft 156 is rotatably installed on the inner wall of the rotating groove, a rotating plate 157 is fixedly installed on the surface of the rotating shaft 156, and a limiting plate 158 is fixedly installed on the surface of the rotating shaft 156 to prevent the clamping plate 148 from clamping the connecting wire insufficiently stably, resulting in the inability to effectively clamp the connecting wire when pulling, affecting the normal operation of the equipment.

[0037] A No. 2 torsion spring is arranged between the rotating groove and the rotating shaft 156 , and the No. 2 torsion spring drives the rotating shaft 156 to return to its original position. The push rod 155 is arranged below the rotating plate 157 .

[0038] When the present embodiment is working, the control switch 7 is moved along the slide plate 6 toward the direction close to the mounting frame 5 to contact the sliding rod 141, and the control switch 7 will push the sliding rod 141 to move toward the direction close to the mounting frame 5. The movement of the sliding rod 141 toward the direction close to the mounting frame 5 will drive the connecting seat 143 to move toward the inside of the square groove. The movement of the connecting seat 143 toward the inside of the square groove will drive the hinged rod 144 to push the sliding seat 145 to slide upward. The upward sliding of the sliding seat 145 will drive the sliding rod 147 and the clamping plate 148 to slide upward. The upward sliding of the clamping plate 148 can pull the connecting wire at the bottom of the control switch 7 upward to prevent disassembly. When removing or installing, pulling the connecting wire will cause poor contact between the control switch 7 and the connecting wire. Short circuits may occur during operation, affecting the normal power supply of the distribution cabinet. At the same time, the clamping plate 148 will drive the connecting plate 149 to move upward during the downward movement of the clamping plate 148. The upward movement of the connecting plate 149 will contact the trapezoidal block 1410, and the trapezoidal block 1410 will push the connecting plate 149 to rotate. The rotation of the connecting plate 149 will drive the clamping plate 148 to rotate in the direction of the connecting wire. The connecting wire is clamped by the clamping plate 148 to prevent direct pulling from causing looseness between the control switch 7 and the connecting wire, thereby affecting the normal operation of the equipment.

[0039] The upward movement of the slide bar 147 drives the connecting frame 151 to move upward, and the upward movement of the connecting frame 151 drives the pulley 152 to move upward. The upward movement of the pulley 152 contacts the inclined surface of the triangular plate 154, and the pulley 152 is guided by the inclined surface of the triangular plate 154, so that the pulley 152 and the connecting frame 151 are clamped between the fixing blocks 153, and the mounting frame 5 is limited by clamping between the fixing blocks 153, so as to prevent the position of the mounting frame 5 from being continuously moved after the installation is completed, resulting in looseness between the connecting line and the control switch 7, which may easily cause a short circuit in the equipment. The normal operation of the equipment is affected. At the same time, when the connecting frame 151 moves upward, the push rod 155 moves upward. The push rod 155 moves upward and contacts the rotating plate 157. The push rod 155 moves upward and pushes the rotating plate 157 to rotate upward. The rotating plate 157 rotates upward and drives the rotating shaft 156 to rotate. The rotating shaft 156 rotates and drives the limiting plate 158 to rotate. The limiting plate 158 rotates downward to limit the connecting plate 149, preventing the clamping plate 148 from clamping the connecting wire stably, resulting in the inability to effectively clamp the connecting wire when pulling, affecting the normal operation of the equipment.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high and low voltage power cabinet for electric power engineering, characterized in that: include: A power distribution cabinet body (1), wherein a revolving door (2) is rotatably mounted on the inner wall of the power distribution cabinet body (1), a slide rail (3) is slidably mounted on the inner wall of the power distribution cabinet body (1), and a slider (4) is slidably mounted on the inner wall of the slide rail (3); A quick release device, the quick release device is arranged on the surface of a slider (4), comprising a mounting frame (5), a slide plate (6), a control switch (7), an L-shaped plate (8), an elastic telescopic plate (9), a triangular block (10) and a short rod (11), the mounting frame (5) is fixedly mounted on the surface of the slider (4), the slide plate (6) is fixedly mounted on the surface of the mounting frame (5), the control switch (7) is slidably mounted on the surface of the slide plate (6), the L-shaped plate (8) is fixedly mounted on the surface of the control switch (7), a groove is provided on the surface of the mounting frame (5), the elastic telescopic plate (9) is fixedly mounted on the bottom of the inner wall of the groove, the triangular block (10) is fixedly mounted on the free end of the elastic telescopic plate (9), and the short rod (11) is fixedly mounted on the surface of the triangular block (10); Wherein, the inner wall of the mounting frame (5) is provided with a wire-pulling prevention device for preventing the wire from being pulled, and a limiting device is provided on the mounting frame (5); The L-shaped plate (8) and the triangular block (10) are in the same horizontal plane, and a sliding groove is provided on the surface of the sliding plate (6); The anti-pull wire device comprises a sliding rod (141), an L-shaped rod (142), a connecting seat (143), a hinged rod (144), a sliding seat (145), a sliding plate (146), a sliding rod (147), a clamping plate (148), a connecting plate (149) and a trapezoidal block (1410), wherein the sliding rod (141) slides through the surface of the mounting frame (5), the L-shaped rod (142) is fixedly mounted on the bottom of the sliding rod (141), a square groove is provided on the surface of the mounting frame (5), the L-shaped rod (142) is slidably mounted on the inner wall of the square groove, and the connecting seat (143) is fixedly mounted on the L-shaped rod (142). The sliding seat (145) is slidably mounted on the inner wall of the square groove, one end of the hinged rod (144) is rotatably mounted on the inner wall of the connecting seat (143), the other end of the hinged rod (144) is rotatably mounted on the inner wall of the sliding seat (145), the sliding plate (146) is fixedly mounted on the surface of the sliding seat (145), the sliding rod (147) is fixedly mounted on the bottom of the sliding plate (146), the clamping plate (148) is rotatably mounted on the surface of the sliding rod (147), the connecting plate (149) is fixedly mounted on the surface of the clamping plate (148), and the trapezoidal block (1410) is fixedly mounted on the bottom of the mounting frame (5).

2. A high and low voltage power cabinet for electric power engineering according to claim 1, characterized in that: A No. 1 spring is arranged between the sliding rod (141) and the mounting frame (5), a No. 2 spring is arranged between the L-shaped rod (142) and the square groove, and a No. 3 spring is arranged between the sliding seat (145) and the square groove.

3. A high and low voltage power cabinet for electric power engineering according to claim 2, characterized in that: A torsion spring No. 1 is arranged between the clamping plate (148) and the slide rod (147), and the connecting plate (149) is arranged below the trapezoidal block (1410).

4. A high and low voltage power cabinet for electric power engineering according to claim 3, characterized in that: The limiting device comprises a connecting frame (151), a pulley (152), a fixed block (153) and a triangular plate (154); the connecting frame (151) is fixedly mounted on the surface of the slide bar (147); the pulley (152) is rotatably mounted on the inner wall of the connecting frame (151); the fixed block (153) is fixedly mounted on the bottom of the slide rail (3); and the triangular plate (154) is fixedly mounted on the bottom of the fixed block (153).

5. A high and low voltage power cabinet for electric power engineering according to claim 4, characterized in that: A push rod (155) is fixedly mounted on the top of the connecting frame (151), a rotating groove is provided on the surface of the trapezoidal block (1410), a rotating shaft (156) is rotatably mounted on the inner wall of the rotating groove, a rotating plate (157) is fixedly mounted on the surface of the rotating shaft (156), and a limiting plate (158) is fixedly mounted on the surface of the rotating shaft (156).

6. A high and low voltage power cabinet for electric power engineering according to claim 5, characterized in that: A second torsion spring is arranged between the rotating groove and the rotating shaft (156), and the push rod (155) is arranged below the rotating plate (157).

7. A high and low voltage power cabinet for electric power engineering according to claim 6, characterized in that: An elastic telescopic rod (12) is fixedly mounted on the surface of the mounting frame (5), a clamping block (13) is fixedly mounted on the free end of the elastic telescopic rod (12), and the clamping block (13) is arranged below the short rod (11).

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