CN115472461A

CN115472461A - High-breaking load switch

Info

Publication number: CN115472461A
Application number: CN202211402377.0A
Authority: CN
Inventors: 刘正南; 刘炉钢; 孟利兴; 费国柱
Original assignee: Jiangsu Zhong Zhong Switch Factory Co ltd
Current assignee: Jiangsu Zhong Zhong Switch Factory Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2022-12-13
Anticipated expiration: 2042-11-10
Also published as: CN115472461B

Abstract

The invention discloses a high-breaking load switch, which relates to the technical field of electrical equipment and comprises a vertical plate, wherein a middle transverse plate and a bottom transverse plate are fixedly arranged on the vertical plate, an opening and closing assembly is fixedly arranged on the middle transverse plate and comprises a ceramic column fixedly arranged on the middle transverse plate, a second contact base is slidably arranged on the ceramic column, and a tension spring is fixedly arranged between the opposite surfaces of the second contact base and the middle transverse plate. When short-circuit current exists in the circuit, the magnetic force of the coil iron core is increased, the coil iron core repels the permanent magnet, and the permanent magnet drives the trigger pushing frame to be far away from the coil iron core, so that the first contact and the second contact are separated, and the function of cutting off the circuit is realized; by arranging the fusing component, when the circuit operates under high load, the circuit can be automatically cut off, and fire caused by overlarge current is prevented; after the fuse damages, need not the manual work and install the fuse, can realize the function of automatic change fuse through pressing the handle.

Description

High-breaking load switch

Technical Field

The invention relates to the technical field of electrical equipment, in particular to a high-breaking load switch.

Background

The load switch is a switch equipment which can close, bear and break the current under the normal condition in the power distribution system and can pass the specified abnormal (such as short circuit) current, and is a switch-on/off switch with a special arc-extinguishing contact, an arc-extinguishing device and a spring breaking device. However, the circuit breaker can control any circuit, and the load switch can only switch load current or break overload current, so that the circuit breaker is only used for breaking and closing normal circuit, but not for breaking short-circuit fault current.

The utility model discloses a utility model patent of publication No. CN201904273U discloses a high divide divides disconnected vacuum load switch, includes the frame, install mutually independent isolator on the frame, keep apart the static contact, go up earthing switch, lower earthing switch, link gear, high divide disconnected vacuum load switch, gu seal a grade post, gu seal an insulator seat, push rod, load switch drive mechanism. The upper grounding switch and the lower grounding switch are arranged, and the two grounding switches synchronously act and are in linkage operation with the isolating switch, so that the hidden danger of misoperation of the isolating switch and the grounding switch is avoided; the embedded pole prevents the arc extinguish chamber from being exposed outside and is easy to be impacted by the outside; interphase and earth insulation is susceptible to dirt and condensation; the load switch adopts 1-level transmission, has simple structure and small power loss, and is operated with the isolating switch step by step, thereby avoiding accidents caused by the on-load operation of the isolating switch because the load switch is switched on before the isolating switch; the high-breaking load switch is simple in structure, easy to manufacture and process, simple to operate, and safer and more reliable. This prior art cannot be applied to a circuit that short-circuits a fault current.

Disclosure of Invention

In order to achieve the purpose, the invention provides the following technical scheme: a high breaking load switch comprises a vertical plate, wherein a middle transverse plate and a bottom transverse plate are fixedly mounted on the vertical plate, a switching assembly is fixedly mounted on the middle transverse plate and comprises a ceramic column fixedly mounted on the middle transverse plate, a second contact base is slidably mounted on the ceramic column, a tension spring is fixedly mounted between opposite surfaces of the second contact base and the middle transverse plate, an upper swing arm is rotatably mounted on the second contact base and rotatably mounted on a limiting slide block, a lower swing arm is also rotatably mounted on the limiting slide block, the lower swing arm is rotatably mounted on the middle transverse plate through a lower swing arm support, the limiting slide block is slidably mounted on a limiting slide block support, the limiting slide block support is fixedly mounted on a C-shaped switch frame, and the C-shaped switch frame is slidably mounted on the middle transverse plate through a C-shaped switch frame support; fixed mounting has the fusing subassembly on the diaphragm of end, the fusing subassembly includes collateral branch backup pad and the handle support of fixed mounting on the diaphragm of end, slidable mounting has the handle on the handle support, and fixed mounting has the rack bar of discharging on the handle, and the gear engagement has ratchet mechanism on the rack bar of discharging, and ratchet mechanism's central fixed mounting has the output pulley, and the output pulley is connected with driving pulley through middle drive belt transmission, and driving pulley is used for the drive to rotate the belt drive mechanism who installs on the fuse puts the groove and rotates, and belt drive mechanism goes up fixed mounting and pushes away the frame.

Preferably, the tension spring is wound around the outer side of the ceramic column, the lower swing arm support is fixedly connected with the middle transverse plate, the lower swing arm support is rotatably connected with the lower swing arm, the C-shaped switch frame support is slidably connected with the C-shaped switch frame, and the C-shaped switch frame support is fixedly connected with the middle transverse plate.

Preferably, a sliding hole is formed in the second contact base, a second contact sliding rod is slidably mounted in the sliding hole, a second contact is fixedly mounted on the second contact sliding rod and is in sliding connection with the ceramic column, an extrusion spring is fixedly mounted between the opposite surfaces of the second contact and the second contact base, and the extrusion spring is wound on the outer side of the ceramic column.

Preferably, the top of ceramic post is provided with first contact, and first contact fixed mounting is on the riser, still fixed mounting has arc chute support and coil core support on the riser.

Preferably, fixed mounting has the promotion frame support that triggers on the coil core support, triggers to have slidable mounting to trigger on the promotion frame support and push the frame, triggers to push and to go up fixed mounting of frame and have the permanent magnet, the overlap joint has coil core on the permanent magnet, coil core fixed mounting is on the coil core support, fixed mounting has the arc extinguishing bars on the arc extinguishing bars support.

Preferably, ratchet and output pulley rotate and install on the collateral branch backup pad, fuse place groove fixed mounting is on the collateral branch backup pad, push away a slidable mounting on pushing away a slide bar, push away the both ends of a slide bar respectively with riser and collateral branch backup pad fixed connection.

Preferably, fixed mounting has electrically conductive clamp support on the collateral branch fagging, and fixed mounting has first electrically conductive clamp and the electrically conductive clamp of second on the electrically conductive clamp support, and the fuse joint is on first electrically conductive clamp and the electrically conductive clamp of second.

Preferably, a plurality of fuses are arranged in the fuse holding groove, each fuse is fixedly provided with a separation block for controlling the distance between two adjacent fuses, the second contact is electrically connected with one end of the coil iron core, and the other end of the coil iron core is electrically connected with the first conductive clamp.

Compared with the prior art, the invention has the following beneficial effects: (1) When short-circuit current exists in the circuit, the magnetic force of the coil iron core is increased, the coil iron core repels the permanent magnet, and the permanent magnet drives the trigger pushing frame to be far away from the coil iron core, so that the first contact and the second contact are separated, and the function of cutting off the circuit is realized; (2) By arranging the fusing component, when the circuit operates under high load, the circuit can be automatically cut off, and fire caused by overlarge current is prevented; (3) According to the invention, after the fuse is damaged, the fuse is not required to be installed manually, and the function of automatically replacing the fuse can be realized by pressing the handle.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of the structure at A in FIG. 1 according to the present invention.

Fig. 3 is a disassembled view of the structure of the compression spring of the present invention.

FIG. 4 is a schematic view of a fuse assembly according to the present invention.

FIG. 5 is a schematic view of the structure of the partition block of the present invention.

In the figure: 101-a first contact; 102-ceramic posts; 103-arc chute; 104-arc chute support; 105-a second contact; 1051-a second contact slide bar; 106-a second contact base; 1061-sliding holes; 107-C shaped switch frame; 108-C-shaped switch rack support; 109-tension spring; 110-a limiting slider bracket; 111-a limit slide block; 112-lower swing arm support; 113-lower swing arm; 114-upper swing arm; 115-trigger push frame; 116-trigger pusher carriage; 117-coil core support; 118-a coil core; 119-a permanent magnet; 120-compression spring; 201-side support plate; 202-handle holder; 203-a handle; 204-a fuse-placing slot; 205-belt drive; 206-a drive pulley; 207-intermediate drive belt; 208-an output pulley; 209-ratchet mechanism; 210-drain rack bar; 211-a first conductive clip; 212-a second conductive clip; 213-a pushing frame; 214-pusher carriage slide bar; 215-conductive clip support; 301-a vertical plate; 302-center horizontal plate; 303-bottom transverse plate; 3031-drainage hole; 4-a fuse; 5-separating block.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The invention provides a technical scheme that: a high breaking load switch comprises a vertical plate 301, a middle transverse plate 302 and a bottom transverse plate 303 are fixedly installed on the vertical plate 301, an opening and closing assembly is fixedly installed on the middle transverse plate 302 and comprises a ceramic column 102 fixedly installed on the middle transverse plate 302, a second contact base 106 is installed on the ceramic column 102 in a sliding mode, a tension spring 109 is fixedly installed between the opposite surfaces of the second contact base 106 and the middle transverse plate 302, an upper swing arm 114 is installed on the second contact base 106 in a rotating mode, the upper swing arm 114 is installed on a limiting slide block 111 in a rotating mode, a lower swing arm 113 is further installed on the limiting slide block 111 in a rotating mode, the lower swing arm 113 is installed on the middle transverse plate 302 through a lower swing arm support 112 in a rotating mode, the limiting slide block 111 is installed on a limiting slide block support 110 in a sliding mode, the limiting slide block support 110 is fixedly installed on a C-shaped switch frame 107, the C-shaped switch frame 107 is installed on the middle transverse plate 302 through a C-shaped switch frame support 108 in a sliding mode, the tension spring 109 surrounds the outer side of the ceramic column 102, the lower swing arm support 112 is fixedly connected with a middle transverse plate 302, the lower swing arm support 112 is rotatably connected with a lower swing arm 113, the C-shaped switch frame support 108 is slidably connected with a C-shaped switch frame 107, the C-shaped switch frame support 108 is fixedly connected with the middle transverse plate 302, a sliding hole 1061 is formed in the second contact base 106, a second contact slide bar 1051 is slidably mounted in the sliding hole 1061, a second contact 105 is fixedly mounted on the second contact slide bar 1051, the second contact 105 is slidably connected with the ceramic column 102, a pressing spring 120 is fixedly mounted between the opposite surfaces of the second contact 105 and the second contact base 106, the pressing spring 120 surrounds the outer side of the ceramic column 102, a first contact 101 is arranged at the top end of the ceramic column 102, the first contact 101 is fixedly mounted on a vertical plate 301, an arc extinguishing grid support 104 and a coil core support 117 are also fixedly mounted on the vertical plate 301, a trigger pushing frame support 116 is fixedly mounted on the coil core support 117, the trigger pushing frame support 116 is provided with a trigger pushing frame 115 in a sliding mode, the trigger pushing frame 115 is fixedly provided with a permanent magnet 119, the permanent magnet 119 is lapped with a coil core 118, the coil core 118 is fixedly arranged on the coil core support 117, and the arc extinguishing grid support 104 is fixedly provided with the arc extinguishing grid 103.

The fuse component is fixedly installed on the bottom transverse plate 303 and comprises a side supporting plate 201 and a handle support 202 which are fixedly installed on the bottom transverse plate 303, a handle 203 is installed on the handle support 202 in a sliding mode, a draining rack bar 210 is fixedly installed on the handle 203, a ratchet mechanism 209 is meshed with a gear on the draining rack bar 210, an output belt wheel 208 is fixedly installed in the center of the ratchet mechanism 209, the output belt wheel 208 is connected with a driving belt wheel 206 through an intermediate driving belt 207 in a driving mode, the driving belt wheel 206 is used for driving a belt driving mechanism 205 which is rotatably installed on a fuse placing groove 204 to rotate, a pushing frame 213 is fixedly installed on the belt driving mechanism 205, the ratchet mechanism 209 and the output belt wheel 208 are rotatably installed on the side supporting plate 201, the fuse placing groove 204 is fixedly installed on the side supporting plate 201, the pushing frame 213 is slidably installed on the pushing frame sliding bar 214, two ends of the pushing frame sliding bar 214 are fixedly connected with a vertical plate 301 and the side supporting plate 201 respectively, a conductive clamp support bracket 215 is fixedly installed on the side supporting plate 201, a conductive clamp bracket 215 is fixedly installed on the side supporting plate 201, a first conductive clamp 211 and a second conductive clamp 212 are fixedly installed on the conductive clamp bracket 215, fuses 4, the fuses 4 are clamped on the first conductive clamp 211 and the second conductive clamp 212, a plurality of fuses are installed on the fuses, a plurality of fuses 118, a plurality of fuses are electrically connected with two adjacent coil contacts 118, the conductive clamps 118, and two adjacent control coils are electrically connected with the second coil contacts, and the second coil contacts of the second coil 118, and the control blocks 105, and the two control coil contacts are electrically connected with the second coil 211, and the second coil 118, and the second coil.

The working principle of the high-breaking load switch disclosed by the invention is as follows: when the contact device is used, the first contact 101 and the second conductive clamp 212 are connected with an electric wire, then the C-shaped switch frame 107 is pushed, the C-shaped switch frame 107 moves to drive the limit slider bracket 110 to move, the limit slider bracket 110 moves to drive the limit slider 111 to move, the limit slider 111 can enable the included angle between the lower swing arm 113 and the upper swing arm 114 to gradually increase, at the moment, the limit slider 111 can horizontally move and vertically move, when the included angle between the lower swing arm 113 and the upper swing arm 114 is larger than 180 degrees, the limit slider 111 is in contact with the trigger pushing frame 115, at the moment, the second contact 105 can also be in contact with the first contact 101, at the same time, the pressing spring 120 is in a compression state, the tension spring 109 is in a stretching state, because the tension spring 109 can provide a downward force to the second contact base 106, and the included angle between the lower swing arm 113 and the upper swing arm 114 is larger than 180 degrees, at the moment, the limit slider 111 can receive a force from the lower swing arm 113 and the upper swing arm 114 to the trigger pushing frame 115, and the limit slider 115 can not be in a connection state all the time, because the trigger pushing frame 115 can not move, and the second contact 101 can be connected with the second contact all the second contact. When short-circuit current exists in the circuit, the magnetic force of the coil core 118 is increased, the coil core 118 repels the permanent magnet 119, the permanent magnet 119 drives the trigger pushing frame 115 to be away from the coil core 118, and the trigger pushing frame 115 pushes the limiting slide block 111, so that the included angle between the lower swing arm 113 and the upper swing arm 114 is smaller than 180 degrees until the initial position shown in fig. 2 is recovered.

When the circuit is operated under a high load for a long time, the fuse 4 is disconnected at this time, thereby cutting off the circuit, and preventing a fire caused by an excessive current and accumulated heat, when the circuit needs to be reset, the user pulls the handle 203 downwards, the handle 203 drives the draining rack bar 210 to move downwards, it should be noted that, at this time, the teeth arranged on the draining rack bar 210 do not engage with the ratchet mechanism 209 when the draining rack bar 210 moves downwards, so the draining rack bar 210 moves downwards and does not drive the outer ring of the ratchet mechanism 209 to rotate, in this process, the draining rack bar 210 separates the first conductive clamp 211 from the separating block 5 on the second conductive clamp 212, the separating block falls through the draining hole 3031 on the bottom transverse plate 303, when the draining rack bar 210 moves upwards, and the teeth arranged on the draining rack bar 210 contact with the outer ring of the ratchet mechanism 209, the draining rack bar 210 drives the outer ring of the ratchet mechanism 209 to rotate, the outer ring of the ratchet mechanism 209 drives the flywheel body in the ratchet mechanism 209 to rotate, the output pulley 208 drives the output pulley 207 to rotate, and drives the outer ring of the driving belt pulley 205 to rotate, so as to drive the discharging rack bar 213 to rotate, and the discharging rack bar 213, and drive the discharging rack bar to rotate, thereby, the belt pulley 205.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high disconnected load switch, includes riser (301), and fixed mounting has well diaphragm (302) and bottom diaphragm (303) on riser (301), its characterized in that: the middle transverse plate (302) is fixedly provided with an opening and closing assembly, the opening and closing assembly comprises a ceramic column (102) fixedly arranged on the middle transverse plate (302), a second contact base (106) is arranged on the ceramic column (102) in a sliding mode, a tension spring (109) is fixedly arranged between the opposite surfaces of the second contact base (106) and the middle transverse plate (302), an upper swing arm (114) is arranged on the second contact base (106) in a rotating mode, the upper swing arm (114) is arranged on a limiting slider (111) in a rotating mode, a lower swing arm (113) is further arranged on the limiting slider (111) in a rotating mode, the lower swing arm (113) is arranged on the middle transverse plate (302) in a rotating mode through a lower swing arm support (112), the limiting slider (111) is arranged on a limiting slider support (110) in a sliding mode, the limiting slider support (110) is fixedly arranged on a C-shaped switch frame (107), and the C-shaped switch frame (107) is arranged on the middle transverse plate (302) in a sliding mode through a C-shaped switch frame support (108);

fixed mounting has fusing subassembly on end diaphragm (303), fusing subassembly includes collateral branch backup pad (201) and handle support (202) of fixed mounting on end diaphragm (303), slidable mounting has handle (203) on handle support (202), fixed mounting has drainage rack bar (210) on handle (203), it has ratchet (209) to drain rack bar (210) go up the gear engagement, the center fixed mounting of ratchet (209) has output pulley (208), output pulley (208) are connected with driving pulley (206) through middle drive belt (207) transmission, driving pulley (206) are used for the drive to rotate and install belt drive mechanism (205) rotation on fuse placer groove (204), fixed mounting has push frame (213) on belt drive mechanism (205).

2. A high break load switch according to claim 1, characterized in that: extension spring (109) encircle the outside at ceramic post (102), lower swing arm support (112) and well diaphragm (302) fixed connection, lower swing arm support (112) rotate with lower swing arm (113) and are connected, C shape switch frame support (108) and C shape switch frame (107) sliding connection, C shape switch frame support (108) and well diaphragm (302) fixed connection.

3. A high break load switch according to claim 2, characterized in that: the ceramic contact structure is characterized in that a sliding hole (1061) is formed in the second contact base (106), a second contact sliding rod (1051) is arranged in the sliding hole (1061) in a sliding mode, a second contact (105) is fixedly arranged on the second contact sliding rod (1051), the second contact (105) is in sliding connection with the ceramic column (102), an extrusion spring (120) is fixedly arranged between the opposite surfaces of the second contact (105) and the second contact base (106), and the extrusion spring (120) surrounds the outer side of the ceramic column (102).

4. A high break load switch according to claim 3, characterized in that: the top of ceramic post (102) is provided with first contact (101), and first contact (101) fixed mounting is on riser (301), still fixed mounting has arc extinguishing bars support (104) and coil core support (117) on riser (301).

5. A high break load switch according to claim 4, characterized in that: fixed mounting has on coil core support (117) to trigger pushing frame support (116), triggers to have on pushing frame support (116) slidable mounting to trigger pushing frame (115), triggers to go up fixed mounting on pushing frame (115) and has permanent magnet (119), and the overlap joint has coil core (118) on permanent magnet (119), and coil core (118) fixed mounting is on coil core support (117), fixed mounting has arc extinguishing bars (103) on arc extinguishing bars support (104).

6. A high break load switch according to claim 5, characterized in that: ratchet (209) and output pulley (208) rotate to be installed on collateral branch fagging (201), groove (204) fixed mounting is put to the fuse on collateral branch fagging (201), push away frame (213) slidable mounting on pushing away a slide bar (214), the both ends that push away a slide bar (214) respectively with riser (301) and collateral branch fagging (201) fixed connection.

7. A high break load switch according to claim 6, characterized in that: fixed mounting has electrically conductive clamp support (215) on collateral backup pad (201), and electrically conductive clamp support (215) go up fixed mounting has first electrically conductive clamp (211) and the electrically conductive clamp (212) of second, and fuse (4) joint is on first electrically conductive clamp (211) and the electrically conductive clamp (212) of second.

8. A high break load switch according to claim 7, wherein: a plurality of fuses (4) are arranged in the fuse holding groove (204), a separating block (5) is fixedly arranged on each fuse (4) and used for controlling the distance between every two adjacent fuses (4), the second contact (105) is electrically connected with one end of the coil iron core (118), and the other end of the coil iron core (118) is electrically connected with the first conductive clamp (211).