A portable live-line dismounting device for low-voltage circuit breaker installation in power distribution cabinet

Abstract

The application relates to the technical field of electric switches, in particular to a portable live dismounting device for installation of a low-voltage circuit breaker in a power distribution cabinet, which comprises a hollow main frame and a handle, the handle is rotationally connected with the main frame through a hinge, two side holes are formed in the side walls of the main frame, two lifting frames are slidably connected with the main frame, a clamping mechanism is arranged in the main frame, a dismounting mechanism is arranged in the lifting frame, two sliding holes are formed in the lifting frame, and an operating mechanism is arranged in the handle; the clamping mechanism is composed of two clamping assemblies and one action assembly, the clamping assembly comprises a side hole, the two opposite side walls of the main frame are both provided with the side hole, a plurality of clamping blocks are slidably connected with the inner walls of the side holes, and the action assembly comprises a plurality of connecting blocks. The device can guarantee live dismounting, is safer and more convenient to use.

Description

Technical Field

[0001] This invention relates to the field of electrical switch technology, and in particular to a convenient, live-line-compatible installation and removal device for installing low-voltage circuit breakers in distribution cabinets. Background Technology

[0002] Low-voltage circuit breakers, also known as automatic air switches, are indispensable core control and protection electrical appliances in low-voltage power distribution systems. They are widely used in various low-voltage distribution cabinets, distribution boxes, and complete sets of power distribution equipment in industrial and mining enterprises, buildings, municipal power distribution, and civil power supply. This device integrates multiple functions such as line connection, disconnection, overload protection, and short-circuit protection. Some circuit breakers with residual current protection can also provide leakage current protection. They can quickly disconnect the circuit in case of abnormal operating conditions, ensuring the safety of electrical equipment and operators. Their installation stability, ease of installation and disassembly, and operational stability directly affect the power supply reliability, maintenance efficiency, and operational safety of the entire low-voltage power distribution network. There are various installation methods for low-voltage circuit breakers, with bolt installation being the most common.

[0003] In the existing technology, during the installation of low-voltage circuit breakers, the installer needs to disconnect the power, which leads to the circuit being de-energized and the equipment shutting down. In addition, the installer also needs to connect each wire end to the terminal with a screwdriver during the installation process, which is cumbersome. Furthermore, the installer needs to be close to the circuit breaker during the installation process, which also results in low safety. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a convenient, live-line-compatible installation and removal device for installing low-voltage circuit breakers in distribution cabinets.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A convenient live-line disassembly and assembly device for installing low-voltage circuit breakers in a distribution cabinet includes a hollow main frame and a handle. The handle is rotatably connected to the main frame via a hinge. The main frame has two holes on its side wall. The main frame is slidably connected to two lifting frames. A clamping mechanism is provided inside the main frame. A disassembly and assembly mechanism is provided inside the lifting frames. The lifting frames have two sliding holes. An operating mechanism is provided inside the handle.

[0007] The clamping mechanism consists of two sets of clamping components and one set of actuating components. The clamping components include side holes, and the two opposite side walls of the main frame are provided with side holes. Multiple locking blocks are slidably connected to the inner walls of the side holes. The actuating components include multiple connecting blocks. Two locking blocks located on the same horizontal plane are fixedly connected to a connecting block. The side walls of two connecting blocks located on the same side are fixedly connected to racks. The disassembly and assembly mechanism consists of a drive component and a functional component. The drive component includes two third shafts. The third shafts are rotatably connected to the lifting frame through bearings. A first gear is fixedly connected to the third shaft. The first gear meshes with the corresponding rack. The functional component includes multiple adjusting blocks. The adjusting blocks are slidably connected to the lifting frame through sliding holes.

[0008] Furthermore, the clamping assembly also includes two clamping blocks, each clamping block having multiple connecting slots. The clamping blocks are slidably connected to sliders through the connecting slots. The two sliders located on the same horizontal plane are rotatably connected to a second shaft. The two clamping blocks located on the same horizontal plane are rotatably connected to a first shaft. The first shaft and the corresponding second shaft are fixedly connected to a scissor assembly.

[0009] Furthermore, the actuation component also includes a U-shaped block, which is a hollow open structure. The U-shaped block is fixedly connected to the inner bottom wall of the main frame. The U-shaped block is slidably connected to two driving blocks, which are fixedly connected to the corresponding connecting blocks. The U-shaped block and the main frame are connected by a first pipe, one end of which extends into the U-shaped block and the other end extends into the outside of the main frame. Both the U-shaped block and the first pipe are filled with hydraulic oil.

[0010] Furthermore, the main frame sidewall has two facets, the third shaft extends through the facets into the interior of the main frame, and the other end of the third shaft extends through into the lifting frame. The first gear is fixedly connected to the end of the third shaft located inside the main frame. The drive assembly also includes two second gears, the second gears are fixedly connected to the end of the third shaft away from the first gear, and the two second gears mesh with a toothed belt.

[0011] Furthermore, each pair of the adjusting blocks forms a group, and the functional component also includes a slide cylinder. The two adjusting blocks in each group are rotatably connected to the slide cylinder through a bearing. The slide cylinder is rotatably connected to a third gear through the bearing. The third gear meshes with a toothed belt. The slide cylinder is slidably sleeved with a sliding column. A first spring is fixedly connected between the sliding column and the slide cylinder. A screwdriver head is fixedly connected to one end of the sliding column outside the slide cylinder by a bolt. An induction coil is fixedly connected to the adjusting block through a rod. Multiple electromagnets are fixedly connected to the upper surface of the handle. The induction coil and the electromagnets are electrically connected through wires.

[0012] Furthermore, the operating mechanism includes a fixed cylinder, which is fixedly connected to the handle and extends into it. A hydraulic block is slidably connected to the fixed cylinder. Multiple second springs are fixedly connected between the hydraulic block and the handle. Multiple permanent magnets are fixedly connected to the lower surface of the hydraulic block. A second tube is fixedly connected through the side wall of the handle. A flexible hose is fixedly connected between the second tube and the first tube. The handle, the fixed cylinder, and the second tube are all filled with hydraulic oil.

[0013] Furthermore, multiple guide plates are fixedly connected to the side wall of the main frame, and the guide plates are slidably connected to the corresponding lifting frame through the frame, with damping pads provided at the slidable connection.

[0014] Furthermore, the sliding column is provided with multiple protrusions, and the sliding cylinder is provided with corresponding grooves.

[0015] Furthermore, a rubber washer is provided at the rotatable connection between the third gear and the slide cylinder, the cross-section of the adjusting block is I-shaped, and a damping pad is provided at the sliding connection between the adjusting block and the lifting frame.

[0016] Furthermore, both the slider and the connecting groove have T-shaped cross-sections.

[0017] The present invention has the following advantages:

[0018] 1. The installer can place the circuit breaker inside the main frame by holding the handle, which means that the installer can remove and install the circuit breaker while the line is energized and away from the circuit breaker, thus ensuring that the removal and installation can be completed in a safer environment without power interruption.

[0019] 2. The installer holds the handle, presses and lifts the operating block, and through the transmission of hydraulic oil, the drive block moves up and down, which in turn drives the connecting block to move. The connecting block then rotates the third shaft through the meshing of gears and racks, driving the functional components and the clamping block to move, thus completing the installation and removal of the circuit breaker. The device is more convenient to use and improves the efficiency of installation and removal.

[0020] 3. By setting multiple sets of functional components, and the positions of the functional components can be freely adjusted, and the vertical position of the lifting frame can also be freely adjusted, the device can be used for low-voltage circuit breakers of different sizes and specifications, greatly improving the applicability of the device.

[0021] 4. During installation, when the screwdriver head turns the screw, the circuit is instantly connected when the cable is connected to the circuit breaker terminal. Current flows through, and the change in current will cause a change in the magnetic field around the induction coil, thereby generating an induced current in the induction coil and supplying it to the electromagnet. The electromagnet generates a magnetic attraction force on the permanent magnet. The installer can roughly sense the current size by sensing the strength of the magnetic attraction force. If the current is large, the magnetic attraction force will also cause the operation to slide down instantly, thereby separating the terminal from the cable and avoiding safety accidents caused by excessive current.

[0022] 5. The handle is rotatably connected to the main frame, meaning the handle can be rotated and folded, greatly reducing the space occupied by the device and making it more portable. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a convenient, energized, and removable device for installing low-voltage circuit breakers in a distribution cabinet, as proposed in this invention.

[0024] Figure 2 This is a schematic diagram of the internal structure of the main frame under the longitudinal section of a convenient, energized, and detachable device for installing low-voltage circuit breakers in a distribution cabinet, as proposed in this invention.

[0025] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0026] Figure 4 for Figure 2 Enlarged view of point B in the image;

[0027] Figure 5 This is a schematic diagram of the internal structure of the main frame under the cross section of a convenient, energized, and detachable device for installing low-voltage circuit breakers in a distribution cabinet, as proposed in this invention.

[0028] Figure 6 This is a schematic diagram of the internal structure of a convenient, energized, and detachable device for installing low-voltage circuit breakers in a distribution cabinet, as proposed in this invention, in a longitudinal section.

[0029] Figure 7 This is a schematic diagram of the internal structure of the lifting frame under a longitudinal section of a convenient, energized, and detachable device for installing low-voltage circuit breakers in a distribution cabinet, as proposed in this invention.

[0030] Figure 8 for Figure 7 Enlarged view of point C in the image;

[0031] Figure 9 This is a schematic diagram of the functional components in a convenient, live-line detachable device for installing low-voltage circuit breakers in a distribution cabinet, as proposed in this invention.

[0032] In the diagram: 1 Main frame, 101 Side hole, 102 Clamping block, 103 First shaft, 104 Scissor lift assembly, 105 Second shaft, 106 Slider, 107 Clamping block, 108 Connecting block, 109 Rack, 110 U-shaped block, 111 Drive block, 112 First tube, 113 Hole, 114 Guide plate, 115 Connecting groove, 2 Handle, 201 Fixed cylinder, 202 Hydraulic block, 203 Pressing block, 204 Second spring, 205 Permanent magnet, 206 Second tube, 3 Lifting frame, 301 Third shaft, 302 First gear, 303 Second gear, 304 Toothed belt, 305 Sliding hole, 306 Adjusting block, 307 Slide cylinder, 308 Third gear, 309 Slide column, 310 First spring, 311 Screwdriver head, 312 Induction coil, 4 Hoses, 5 Electromagnet. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example

[0035] Reference Figure 1-9 A convenient live-line disassembly and assembly device for installing low-voltage circuit breakers in a distribution cabinet includes a hollow main frame 1 and a handle 2. The handle 2 is rotatably connected to the main frame 1 via a hinge. The side wall of the main frame 1 has two holes 113. The main frame 1 is slidably connected to two lifting frames 3. The main frame 1 is equipped with a clamping mechanism. The lifting frames 3 are equipped with a disassembly and assembly mechanism. The lifting frames 3 are equipped with two sliding holes 305. The handle 2 is equipped with an operating mechanism.

[0036] The clamping mechanism consists of two sets of clamping components and one set of actuating components. The clamping components include side holes 101. The two opposite side walls of the main frame 1 are provided with side holes 101. Multiple locking blocks 102 are slidably connected to the inner wall of the side holes 101. The actuating components include multiple connecting blocks 108. Two locking blocks 102 located on the same horizontal plane are fixedly connected to a connecting block 108. The side walls of two connecting blocks 108 located on the same side are fixedly connected to racks 109. The disassembly and assembly mechanism consists of a drive component and a functional component. The drive component includes two third shafts 301. The third shafts 301 are rotatably connected to the lifting frame 3 through bearings. The third shafts 301 are fixedly connected to a first gear 302. The first gear 302 meshes with the corresponding rack 109. The functional component includes multiple adjusting blocks 306. The adjusting blocks 306 are slidably connected to the lifting frame 3 through sliding holes 305.

[0037] The clamping assembly also includes two clamping blocks 107. Each clamping block 107 has multiple connecting slots 115. A slider 106 is slidably connected to the clamping block 107 through the connecting slots 115. The two sliders 106 located on the same horizontal plane are rotatably connected to a second shaft 105. The two locking blocks 102 located on the same horizontal plane are rotatably connected to a first shaft 103. The first shaft 103 and the corresponding second shaft 105 are fixedly connected to a scissor assembly 104.

[0038] The actuation component also includes a U-shaped block 110, which is a hollow open structure. The U-shaped block 110 is fixedly connected to the inner bottom wall of the main frame 1. The U-shaped block 110 is sealed and slidably connected to two drive blocks 111. The drive blocks 111 are fixedly connected to the corresponding connecting blocks 108. The U-shaped block 110 and the main frame 1 are connected by a first pipe 112. One end of the first pipe 112 extends into the U-shaped block 110, and the other end extends into the outside of the main frame 1. Both the U-shaped block 110 and the first pipe 112 are filled with hydraulic oil.

[0039] Two facets 113 are provided on the side wall of the main frame 1. The third shaft 301 extends through the facets 113 into the interior of the main frame 1. The other end of the third shaft 301 extends through into the lifting frame 3. The first gear 302 is fixedly connected to one end of the third shaft 301 located inside the main frame 1. The drive assembly also includes two second gears 303. The second gears 303 are fixedly connected to the end of the third shaft 301 away from the first gear 302. The two second gears 303 mesh together with the toothed belt 304.

[0040] Each pair of adjusting blocks 306 forms a group. The functional components also include a slide cylinder 307. The two adjusting blocks 306 in each group are rotatably connected to the slide cylinder 307 through a bearing. The slide cylinder 307 is rotatably connected to a third gear 308 through a bearing. The third gear 308 meshes with a toothed belt 304. A sliding column 309 is slidably sleeved on the slide cylinder 307. A first spring 310 is fixedly connected between the sliding column 309 and the slide cylinder 307. A screwdriver head 311 is fixedly connected to one end of the sliding column 309 outside the slide cylinder 307 by a bolt. An induction coil 312 is fixedly connected to the adjusting block 306 through a rod. Multiple electromagnets 5 are fixedly connected to the upper surface of the handle 2. The induction coil 312 is electrically connected to the electromagnets 5 through wires. The induction coil 312 has an opening (e.g., ...). Figure 9 As shown in the figure, the cable is located inside the induction coil 312. When the current inside the cable changes, the magnetic field around the induction coil 312 will change, which in turn will cause the induction coil 312 to generate an induced current.

[0041] It should be noted that within the two lifting frames 3, the meshing directions of the third gear 308 and the toothed belt 304 are symmetrical (e.g., Figure 6As shown), this meshing method causes the third gears 308 in the two lifting frames 3 to rotate in opposite directions, while the two racks 109 move in opposite directions, causing the two first gears 302 to rotate in opposite directions. Thus, the symmetrical arrangement makes the third gears 308 in the two lifting frames 3 rotate in the same direction.

[0042] The operating mechanism includes a fixed cylinder 201, which is fixedly connected to the handle 2 and extends into it. A hydraulic block 202 is slidably connected to the fixed cylinder 201. Multiple second springs 204 are fixedly connected between the hydraulic block 202 and the handle 2. Multiple permanent magnets 205 are fixedly connected to the lower surface of the hydraulic block 202. A second tube 206 is fixedly connected through the side wall of the handle 2. A hose 4 is fixedly connected between the second tube 206 and the first tube 112. The handle 2, the fixed cylinder 201, and the second tube 206 are all filled with hydraulic oil.

[0043] Multiple guide plates 114 are fixedly connected to the side wall of the main frame 1. The guide plates 114 are slidably connected to the corresponding lifting frame 3. The guide plates 114 ensure the stable sliding of the lifting frame 3. A damping pad is provided at the sliding connection. The damping pad creates friction between the two to prevent slippage. The frame can only slide under manual adjustment.

[0044] The sliding column 309 has multiple protrusions, and the sliding cylinder 307 has corresponding grooves (such as...). Figure 8 and Figure 9 As shown in the figure, the protrusion of the slide column 309 and the groove of the slide cylinder 307 cooperate to allow the slide column 309 to slide relative to the slide cylinder 307 in both extension and retraction, and to rotate with it.

[0045] A rubber washer is provided at the rotating connection between the third gear 308 and the slide cylinder 307. The rubber washer allows the third gear 308 to drive the slide cylinder 307 to rotate under a certain torque through friction. Once a certain torque is reached, the third gear 308 will rotate relative to the slide cylinder 307, thus ensuring a constant pressure between the circuit breaker and the cable. This guarantees a stable connection while preventing excessive pressure from damaging the cable head. The adjusting block 306 has an I-shaped cross-section (e.g., ...). Figure 9 As shown, a damping pad is provided at the sliding connection between the adjusting block 306 and the lifting frame 3. The damping pad ensures that there is a certain friction between the adjusting block 306 and the lifting frame 3, thus ensuring that the adjusting block 306 will only slide when it is manually adjusted, and will not slide if accidentally touched.

[0046] Both the slider 106 and the connecting groove 115 have T-shaped cross sections. The T-shaped slider 106 and the connecting groove 115 ensure a stable sliding connection between the slider 106 and the clamping block 107, preventing slippage.

[0047] It should be noted that, except for bearings, springs and other components which are made of metal, all other components in this invention are made of glass fiber reinforced PTFE. While retaining the advantages of PTFE such as extremely low coefficient of friction, self-lubrication, wear resistance, creep resistance, chemical corrosion resistance and high and low temperature resistance, the addition of 20% glass fiber greatly improves the bending and compressive strength, rigidity and creep resistance of the components, ensuring high insulation while greatly improving service life.

[0048] In this invention, when in use, the operator holds the handle 2 and manually adjusts the lifting frame 3 to slide up and down along the guide plate 114 to the matching height according to the specifications and dimensions of the low-voltage circuit breaker to be disassembled and installed. At the same time, the adjusting block 306 slides laterally along the sliding hole 305 of the lifting frame 3 so that the screwdriver head 311 is precisely aligned with the screw position of the circuit breaker terminal. After the adjustment is completed, the position is fixed by relying on the damping pad, thus completing the adaptation adjustment before operation.

[0049] Once ready, the operator places the circuit breaker inside the main frame 1, aligning each screwdriver bit 311 with the corresponding terminal screw. Pressing the pressing block 203 on the handle 2 pushes the hydraulic block 202 downward within the fixed cylinder 201, compressing the internal hydraulic oil and delivering it sequentially through the second pipe 206, hose 4, and first pipe 112 to the U-shaped block 110. The oil pressure drives one of the drive blocks 111 to move, causing the other drive block 111 to move towards it via the scissor assembly 104. Simultaneously, the two clamping blocks 107 move relative to each other, clamping the circuit breaker.

[0050] At the same time, the drive block 111 moves, causing the rack 109 to move, which in turn causes the first gear 302 meshing with the rack 109 to rotate. The first gear 302 drives the second gear 303 to rotate through the third shaft 301. The second gear 303 then drives the toothed belt 304 to move. The movement of the toothed belt 304 drives the third gear 308 meshing with it to rotate. The rotation of the third gear 308 drives the slide cylinder 307 to rotate. The slide cylinder 307 drives the screwdriver head 311 to rotate through the slide column 309, thus loosening the terminal screws of the circuit breaker.

[0051] After preparation, the circuit breaker is inserted into the distribution cabinet using handle 2, and the cable end is inserted into the corresponding terminal hole. At the same time, the cable is positioned in the corresponding induction coil 312. After placement, the pressing block 203 is released. Under the elastic force of the second spring 204, the pressing block 203 drives the hydraulic block 202 to slide upward, drawing the hydraulic oil back into the handle 2. Through the transmission of the hydraulic oil and the transmission of the scissor assembly 104, the two connecting blocks 108 on the same side move in opposite directions, thereby causing the two clamping blocks 107 to move in opposite directions, releasing the circuit breaker. At the same time, the rack 109 drives the first gear 302 to rotate, ultimately causing the screwdriver head 311 to rotate and tighten the terminal screw, thus connecting the terminal to the cable end.

[0052] At the moment of connection, due to the live operation, the current will instantly pass through the circuit breaker, causing the current in the cable to change instantly, which in turn causes a change in the surrounding magnetic field. The change in the magnetic field will induce a current in the induction coil 312, and the magnitude of the induced current is determined by the magnitude of the current in the cable. The induced current is supplied to the electromagnet 5, causing the electromagnet 5 to generate a magnetic force, which in turn generates a magnetic attraction force on the permanent magnet 205. The installer can roughly determine the current in the cable by sensing the magnetic attraction force at the pressing block 203. If the current is normal, the magnetic attraction force is small and will not cause the pressing block 203 to slide down significantly. At this point, the installation is complete. After releasing the circuit breaker, the device can be removed.

[0053] If the current is large and problems may occur, the sudden change in current will cause the electromagnet 5 to exert a large magnetic attraction on the permanent magnet 205. The large magnetic attraction will cause the pressing block 203 to slide down to the bottom instantly. The sliding of the pressing block 203 will cause the screwdriver head 311 to reverse through transmission, separating the circuit breaker terminal from the cable, preventing the circuit from continuing to conduct and causing a safety accident. At the same time, it will keep the circuit breaker clamped, ensuring that the installer can quickly remove the circuit breaker.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A convenient, energized, and detachable device for installing low-voltage circuit breakers in a distribution cabinet, comprising a hollow main frame (1) and a handle (2), characterized in that, The handle (2) is rotatably connected to the main frame (1) by a hinge. The main frame (1) has two face holes (113) on its side wall. The main frame (1) is slidably connected to two lifting frames (3). The main frame (1) is provided with a clamping mechanism. The lifting frames (3) are provided with a disassembly and assembly mechanism. The lifting frames (3) are provided with two sliding holes (305). The handle (2) is provided with an operating mechanism. The clamping mechanism consists of two sets of clamping components and one set of actuating components. The clamping components include side holes (101). The two opposite side walls of the main frame (1) are provided with side holes (101). Multiple locking blocks (102) are slidably connected to the inner wall of the side holes (101). The actuating components include multiple connecting blocks (108). Two locking blocks (102) located on the same horizontal plane are fixedly connected to a connecting block (108). The side walls of the two connecting blocks (108) located on the same side are fixedly connected with teeth. The disassembly and assembly mechanism consists of a drive assembly and a functional assembly. The drive assembly includes two third shafts (301). The third shafts (301) are rotatably connected to the lifting frame (3) through bearings. The third shafts (301) are fixedly connected to a first gear (302). The first gear (302) meshes with the corresponding rack (109). The functional assembly includes multiple adjusting blocks (306). The adjusting blocks (306) are slidably connected to the lifting frame (3) through sliding holes (305).

2. The convenient live-line disassembly and assembly device for installing low-voltage circuit breakers in a distribution cabinet according to claim 1, characterized in that, The clamping assembly further includes two clamping blocks (107), each clamping block (107) having multiple connecting slots (115). The clamping blocks (107) are slidably connected to sliders (106) through the connecting slots (115). The two sliders (106) located on the same horizontal plane are rotatably connected to a second shaft (105). The two clamping blocks (102) located on the same horizontal plane are rotatably connected to a first shaft (103). The first shaft (103) and the corresponding second shaft (105) are fixedly connected to a scissor assembly (104).

3. The convenient live-line disassembly and assembly device for installing low-voltage circuit breakers in a distribution cabinet according to claim 1, characterized in that, The actuation component also includes a U-shaped block (110), which is a hollow open structure. The U-shaped block (110) is fixedly connected to the inner bottom wall of the main frame (1). The U-shaped block (110) is sealed and slidably connected to two drive blocks (111). The drive blocks (111) are fixedly connected to the corresponding connecting blocks (108). The U-shaped block (110) and the main frame (1) are connected by a first pipe (112). One end of the first pipe (112) extends through into the U-shaped block (110), and the other end extends through into the outside of the main frame (1). The U-shaped block (110) and the first pipe (112) are both filled with hydraulic oil.

4. The convenient live-line disassembly and assembly device for installing low-voltage circuit breakers in a distribution cabinet according to claim 1, characterized in that, The main frame (1) has two face holes (113) on its side wall. The third shaft (301) extends through the face holes (113) into the interior of the main frame (1). The other end of the third shaft (301) extends through the lifting frame (3). The first gear (302) is fixedly connected to one end of the third shaft (301) located inside the main frame (1). The drive assembly also includes two second gears (303). The second gears (303) are fixedly connected to one end of the third shaft (301) away from the first gear (302). The two second gears (303) mesh together with a toothed belt (304).

5. A convenient live-line disassembly and assembly device for installing low-voltage circuit breakers in a distribution cabinet according to claim 4, characterized in that, Each pair of the adjustment blocks (306) forms a group. The functional component also includes a slide cylinder (307). The two adjustment blocks (306) in each group are rotatably connected to the slide cylinder (307) through a bearing. The slide cylinder (307) is rotatably connected to a third gear (308) through a bearing. The third gear (308) meshes with a toothed belt (304). The slide cylinder (307) is slidably sleeved with a slide column (309). A first spring (310) is fixedly connected between the slide column (309) and the slide cylinder (307). A screwdriver head (311) is fixedly connected to one end of the slide column (309) outside the slide cylinder (307) by a bolt. An induction coil (312) is fixedly connected to the adjustment block (306) through a rod. Multiple electromagnets (5) are fixedly connected to the upper surface of the handle (2). The induction coil (312) and the electromagnets (5) are electrically connected through wires.

6. A convenient, energized, and removable device for installing low-voltage circuit breakers in a distribution cabinet according to claim 3, characterized in that, The operating mechanism includes a fixed cylinder (201), which is fixedly connected to the handle (2) and extends into it. The fixed cylinder (201) is slidably connected to a hydraulic block (202). Multiple second springs (204) are fixedly connected between the hydraulic block (202) and the handle (2). Multiple permanent magnets (205) are fixedly connected to the lower surface of the hydraulic block (202). A second tube (206) is fixedly connected through the side wall of the handle (2). A hose (4) is fixedly connected between the second tube (206) and the first tube (112). The handle (2), the fixed cylinder (201), and the second tube (206) are all filled with hydraulic oil.

7. A convenient, energized, and removable device for installing low-voltage circuit breakers in a distribution cabinet according to claim 1, characterized in that, The main frame (1) has multiple guide plates (114) fixedly connected to its side wall. The guide plates (114) are slidably connected to the corresponding lifting frame (3) through the frame, and a damping pad is provided at the slid connection.

8. A convenient, energized disassembly and reassembly device for installing low-voltage circuit breakers in a distribution cabinet according to claim 5, characterized in that, The sliding column (309) has multiple protrusions, and the sliding cylinder (307) has corresponding grooves.

9. A convenient, energized, and removable device for installing low-voltage circuit breakers in a distribution cabinet according to claim 5, characterized in that, A rubber washer is provided at the rotatable connection between the third gear (308) and the slide (307), the cross section of the adjusting block (306) is I-shaped, and a damping pad is provided at the sliding connection between the adjusting block (306) and the lifting frame (3).

10. A convenient, energized disassembly and reassembly device for installing low-voltage circuit breakers in a distribution cabinet according to claim 2, characterized in that, Both the slider (106) and the connecting groove (115) have T-shaped cross sections.

Images