阅读说明：本技术 一种便于检修防火防高温的楼宇电表箱 (Building ammeter case convenient to overhaul fire prevention and high temperature prevention ) 是由 朱金达 于 2020-08-04 设计创作，主要内容包括：本发明公开了一种便于检修防火防高温的楼宇电表箱,包括箱体,所述箱体内设置有开口朝前的电表腔,所述电表腔的上端壁中部设置有开口朝下的卡紧腔,所述电表腔内设置有防火装置,所述防火装置包括固定设置于所述电表腔后端壁的防火底板,所述防火底板上安装有若干电表,该发明能够在火灾发生后及时对电表箱内部电表及线路进行保护,并且通过降温剂使电表箱内部的温度不会过高,保证了电表箱内部电表和线路的安全,既降低了损失,又能够避免线路因高温融化而出现漏电的风险,并且该发明相较于传统电表箱更加便于检修,提高了检修效率。(The invention discloses a building electricity meter box convenient for overhauling fireproof and high-temperature-resistant, which comprises a box body, wherein an electricity meter cavity with a forward opening is arranged in the box body, a clamping cavity with a downward opening is arranged in the middle of the upper end wall of the electricity meter cavity, a fireproof device is arranged in the electricity meter cavity and comprises a fireproof bottom plate fixedly arranged on the rear end wall of the electricity meter cavity, and a plurality of electricity meters are arranged on the fireproof bottom plate.)

1. The utility model provides a building ammeter case convenient to overhaul fire prevention high temperature resistant, includes the box, its characterized in that: an electric meter cavity with a forward opening is arranged in the box body, a clamping cavity with a downward opening is arranged in the middle of the upper end wall of the electric meter cavity, a fireproof device is arranged in the electric meter cavity and comprises a fireproof bottom plate fixedly arranged on the rear end wall of the electric meter cavity, a plurality of electric meters are arranged on the fireproof bottom plate, a rectangular annular fireproof baffle plate fixedly connected with the rear end wall of the electric meter cavity is arranged on the outer side of the fireproof bottom plate, an elastic cavity with a forward opening and a rectangular annular shape is arranged in the fireproof baffle plate, an elastic fireproof baffle plate with a front end part capable of moving into the electric meter cavity is arranged in the elastic cavity in a sliding manner, an elastic spring is fixedly connected between the rear end wall of the elastic fireproof baffle plate and the rear end surface of the elastic cavity, a second fireproof cavity with a rightward opening is arranged in the left end wall of the electric meter cavity, and a first fireproof cavity with a leftward opening is arranged in the, the electric meter box comprises a meter cavity, a fan cavity with an upward opening is arranged on the lower end wall of the meter cavity, heat dissipation cavities which enable the fan cavity to be communicated with the outside are symmetrically arranged on the left and right of the left end wall and the right end wall of the fan cavity in a bilateral mode, a heat dissipation device is arranged in the fan cavity, a belt wheel cavity is arranged on the lower side of the fan cavity, a main motor is fixed on the left side of the upper end wall of the belt wheel cavity, a recovery cavity with a downward opening is arranged on the left side of the upper end wall of the meter cavity, a power-off device is arranged in the recovery cavity, a lifting cavity with a rightward opening is arranged in the left end wall of the recovery cavity, a reset cavity with a downward opening is arranged in the upper end wall of the recovery cavity, a driven cavity with a leftward opening is arranged on the right end wall of the reset cavity, a transmission cavity is arranged on the left side of the upper portion of the, the box with the rear end wall sliding connection of fixed backplate, the rear end wall upside bilateral symmetry in slip chamber is provided with the spacing chamber of opening forward, spacing intracavity is provided with overhauls the device, the top bilateral symmetry in pulley chamber is provided with and is located first fire prevention chamber with the ratchet chamber of second fire prevention chamber rear side, the top in ratchet chamber is provided with the spiral chamber, one on right side the top in spiral chamber is provided with the middle chamber, the left side in middle chamber is provided with the impeller cavity, be provided with the heat sink in the impeller cavity, the left side in impeller cavity is provided with the storage chamber.

2. The building ammeter box convenient for overhauling fire prevention and high temperature prevention as well as the manufacturing method of the ammeter box, as claimed in claim 1, wherein: the heat dissipation device comprises a baffle fixedly arranged at an opening on the upper side of the fan cavity, the lower end wall of the fan cavity is rotatably provided with a fan shaft, the lower side of the fan shaft extends to the belt wheel cavity, a fan is fixed on the upper side of the fan shaft, the lower side of the main motor is connected with a motor shaft, the lower side of the main motor is connected with the motor shaft, the lower side of the main motor extends to the upper side of the belt wheel cavity and extends to the ratchet wheel cavity, and the motor shaft is connected with the fan shaft.

3. The building ammeter box convenient for overhauling fire prevention and high temperature prevention as well as the manufacturing method of the ammeter box, as claimed in claim 1, wherein: the fireproof device comprises a motor shaft which is in power connection with the main motor, the upper side of the motor shaft extends into one ratchet cavity on the left side and is fixedly provided with a ratchet wheel, the upper end wall of the ratchet cavity is rotatably provided with a winding shaft, the upper side of the winding shaft penetrates through the winding cavity and extends into the transmission cavity, the lower side of the winding shaft is fixedly provided with a connecting wheel, the eccentric part of the lower end surface of the connecting wheel is fixedly provided with an eccentric rod, the eccentric rod is rotatably provided with an eccentric clamping block, a torsion spring is fixedly connected between the eccentric clamping block and the eccentric rod, the eccentric clamping block can be matched and connected with the ratchet wheel to enable the ratchet wheel to drive the connecting wheel to rotate through the eccentric clamping block, the winding wheel fixedly connected with the winding shaft is arranged in the winding cavity, a second fireproof plate is arranged in the second fireproof cavity in a sliding manner, and a second fireproof spring is fixedly connected between the left end surface of the second fireproof plate and the left end wall of the second, a second fireproof rope which extends into the left side of one winding wire cavity and is wound on the left side of one winding wire wheel is fixed on the left end face of the second fireproof plate, a belt wheel shaft with the lower side extending into the belt wheel cavity is rotatably arranged on the lower end wall of the right side of one ratchet wheel cavity, the lower side of the belt wheel shaft is connected with the lower side of the motor shaft through a group of belt wheels, the upper side of the belt wheel shaft is fixedly connected with the lower end face of one ratchet wheel on the right side, an intermediate shaft with the upper side penetrating through the right side of one winding wire cavity and extending into the intermediate cavity is rotatably arranged on the upper end wall of the right side of one ratchet wheel cavity, the lower side of the intermediate shaft is fixedly connected with the upper end face of one connecting wheel on the right side, a first fireproof plate is slidably arranged in the first fireproof cavity, and a first fireproof spring is fixedly connected between the right end face of the first fireproof plate and the, the right-hand member face of first PLASTIC LAMINATED is fixed with and extends to one on right side the spiral intracavity and winding are installed one on right side first fireproof rope on the spiral wheel, first PLASTIC LAMINATED with the second PLASTIC LAMINATED can the ammeter intracavity connect and with elasticity fire damper cooperation is connected the ammeter that makes to install on the fire prevention bottom plate and is kept apart with external environment.

4. The building ammeter box convenient for overhauling fire prevention and high temperature prevention as well as the manufacturing method of the ammeter box, as claimed in claim 1, wherein: the power-off device comprises a lifting plate which is arranged in the recovery cavity in a sliding manner, the left side of the lifting plate extends into the lifting cavity, the lower side of the lifting plate is fixed with a power supply connector, the lower side of the power supply connector can extend into the electric meter cavity and can slide up and down, the upper end wall of the lifting cavity is rotatably provided with a lifting rod, the upper side of the lifting rod extends into the transmission cavity, the upper side of the lifting rod is connected with the upper side of the winding shaft through a group of belt pulleys, the reset cavity is internally provided with a reset block, the lower side of the reset block can extend into the recovery cavity, a reset spring is fixedly connected between the upper end surface of the reset block and the upper end wall of the reset cavity, the rear end wall of the driven cavity is rotatably provided with a driven shaft, the front side of the driven shaft is fixedly provided with a reset gear meshed with the right side of the reset block, the, the other side of chucking rope extends the chucking intracavity and fix set up in the up end of the chucking piece in the chucking intracavity, the up end of chucking piece with fixedly connected with chucking spring between the up end wall in chucking chamber, the chucking piece can extend to in the elasticity fire damper and the restriction elasticity fire damper's removal.

5. The building ammeter box convenient for overhauling fire prevention and high temperature prevention as well as the manufacturing method of the ammeter box, as claimed in claim 1, wherein: the heat sink including rotate set up in the right-hand member wall of impeller cavity and the right side extends to the impeller shaft in the middle cavity, the right side of impeller shaft with the upside of jackshaft is through a pair of bevel gear pair connection, the left side of impeller shaft is fixed with the impeller, the inlet tube is installed to the left end wall upside intercommunication in storage chamber, the inlet tube with fixed the encircleing install the fixed intercommunication of one end of the cooling tube of terminal surface before the fire prevention bottom plate, the outlet pipe is installed to the lower extreme wall intercommunication in impeller cavity, the outlet pipe with the fixed intercommunication of the other end of cooling tube.

6. The building ammeter box convenient for overhauling fire prevention and high temperature prevention as well as the manufacturing method of the ammeter box, as claimed in claim 1, wherein: the maintenance device including slide set up in stopper in the spacing intracavity, the rear end face of stopper with the spacing spring of fixedly connected with between the rear end wall in spacing chamber, the rear end face upside bilateral symmetry of box be provided with can with spacing chamber aligns and the opening towards the draw-in groove of back, thereby the front side of stopper can extend to thereby restrict in the draw-in groove the upper and lower slip of box.

Technical Field

The invention relates to the technical field of building electric meter boxes, in particular to a fireproof and high-temperature-resistant building electric meter box convenient to overhaul.

Background

Ammeter case in traditional building mostly does not possess the function of high temperature is prevented in oneself's fire prevention, can not carry out strong protection to ammeter inside the ammeter case when catching fire in meetting the building, thereby make the ammeter need change after the conflagration, and then cause very big economic loss, and probably take place the condition that the short circuit made ammeter case box electrified when the circuit of ammeter incasement portion experiences the high temperature after, there is very big potential safety hazard, and simultaneously, the eminence at the wall body is installed mostly to traditional ammeter case, need the people to overhaul with the help of rising apparatus when overhauing like this, it is very inconvenient.

Disclosure of Invention

Aiming at the defects of the technology, the invention provides the fireproof and high-temperature-resistant building electricity meter box convenient to overhaul, and the defects can be overcome.

The invention relates to a building electricity meter box convenient for overhauling fireproof and high temperature prevention, which comprises a box body, wherein an electricity meter cavity with a forward opening is arranged in the box body, a clamping cavity with a downward opening is arranged in the middle of the upper end wall of the electricity meter cavity, a fireproof device is arranged in the electricity meter cavity and comprises a fireproof bottom plate fixedly arranged on the rear end wall of the electricity meter cavity, a plurality of electricity meters are arranged on the fireproof bottom plate, a rectangular annular fireproof baffle plate fixedly connected with the rear end wall of the electricity meter cavity is arranged on the outer side of the fireproof bottom plate, a rectangular annular elastic cavity with a forward opening is arranged in the fireproof baffle plate, an elastic fireproof baffle plate with a front end part capable of moving into the electricity meter cavity is arranged in the elastic cavity in a sliding mode, an elastic spring is fixedly connected between the rear end wall of the elastic fireproof baffle plate and the rear end surface of the elastic cavity, a second fireproof cavity with a rightward opening is arranged in the left, a first fireproof cavity with an opening facing left is arranged in the right end wall of the electric meter cavity, a fan cavity with an opening facing up is arranged on the lower end wall of the electric meter cavity, heat dissipation cavities which enable the fan cavity to be communicated with the outside are symmetrically arranged on the left side and the right side of the left end wall and the right end wall of the fan cavity, a heat dissipation device is arranged in the fan cavity, a pulley cavity is arranged on the lower side of the fan cavity, a main motor is fixed on the left side of the upper end wall of the pulley cavity, a recovery cavity with an opening facing down is arranged on the left side of the upper end wall of the electric meter cavity, a power-off device is arranged in the recovery cavity, a lifting cavity with an opening facing right is arranged in the left end wall of the recovery cavity, a reset cavity with a downward opening is arranged in the upper end wall of the recovery cavity, a driven cavity with an opening facing left is arranged on the right end wall of the reset cavity, a transmission cavity is, the utility model discloses a fire-proof cabinet, including fixed backplate, box, wheel cavity, first fireproof chamber, second fireproof chamber, wire winding chamber, right side, middle chamber, impeller chamber, fixed backplate is provided with the opening and slides the chamber forward and open-ended down, the box with the rear end wall sliding connection of fixed backplate, the rear end wall upside bilateral symmetry in slip chamber is provided with the spacing chamber of opening forward, spacing intracavity is provided with overhauls the device, the top bilateral symmetry in impeller chamber is provided with and is located first fireproof chamber with the ratchet chamber of second fireproof chamber rear side, the top in ratchet chamber is provided with the wire winding chamber, one on right side the top in wire winding chamber is provided with the middle chamber, the left side in middle chamber is provided with the impeller chamber, be provided.

Preferably, the heat dissipation device comprises a baffle fixedly arranged at an opening at the upper side of the fan cavity, a fan shaft with a lower side extending into the belt wheel cavity is rotatably arranged on the lower end wall of the fan cavity, a fan is fixed at the upper side of the fan shaft, a motor shaft with a lower side extending into the belt wheel cavity and an upper side extending into the ratchet wheel cavity is connected to the main motor in a power connection mode, and the motor shaft is connected with the fan shaft through a group of belt pulleys.

Preferably, the fire protection device include with the motor shaft that main motor power is connected, the upside of motor shaft extends to left one ratchet intracavity and fixed the setting by the ratchet, the upper end wall in ratchet chamber rotates and is provided with the reel, the upside of reel passes the reel chamber extends to the transmission intracavity, the downside of reel is fixed with the fifth wheel, the lower terminal surface eccentric department of fifth wheel is fixed with the eccentric rod, it is provided with eccentric fixture block to rotate on the eccentric rod, eccentric fixture block with fixedly connected with torsional spring between the eccentric rod, eccentric fixture block can with the ratchet cooperation is connected and is made the ratchet passes through eccentric fixture block drives the fifth wheel rotates, be provided with in the reel intracavity with reel fixed connection of reel, the second fire prevention intracavity slides and is provided with the second PLASTIC LAMINATED, the left end surface of second PLASTIC LAMINATED with fixedly connected with second fire prevention between the left end wall in second fire prevention chamber prevents the reel The left end face of the second fireproof plate is fixedly provided with a second fireproof rope which extends into one of the left winding cavities and is wound on one of the left winding wheels, the lower end wall of the other ratchet cavity on the right side is rotatably provided with a pulley shaft with the lower side extending into the pulley cavity, the lower side of the pulley shaft is connected with the lower side of the motor shaft through a group of belt pulleys, the upper side of the pulley shaft is fixedly connected with the lower end face of one of the right ratchet wheels, the upper end wall of the other ratchet cavity on the right side is rotatably provided with an intermediate shaft with the upper side penetrating through the other winding cavity on the right side and extending into the intermediate cavity, the lower side of the intermediate shaft is fixedly connected with the upper end face of one of the right connecting wheels, a first fireproof plate is arranged in the first fireproof cavity in a sliding manner, and a first fireproof spring is fixedly connected between the right end face of the first fireproof plate and the right end wall of the first fireproof cavity, the right-hand member face of first PLASTIC LAMINATED is fixed with and extends to one on right side the spiral intracavity and winding are installed one on right side first fireproof rope on the spiral wheel, first PLASTIC LAMINATED with the second PLASTIC LAMINATED can the ammeter intracavity connect and with elasticity fire damper cooperation is connected the ammeter that makes to install on the fire prevention bottom plate and is kept apart with external environment.

Preferably, the power cut-off device comprises a lifting plate which is arranged in the recovery cavity in a sliding manner, the left side of the lifting plate extends into the lifting cavity, the lower side of the lifting plate is fixed with a power supply connector, the lower side of the power supply connector can extend into the electric meter cavity and can slide up and down, the upper end wall of the lifting cavity is rotatably provided with a lifting rod, the upper side of the lifting rod extends into the transmission cavity, the upper side of the lifting rod is connected with the upper side of the winding shaft through a group of belt pulleys, the resetting block, the lower side of the resetting cavity can extend into the recovery cavity, a resetting block is arranged in the resetting cavity in a sliding manner, a resetting spring is fixedly connected between the upper end surface of the resetting block and the upper end wall of the resetting cavity, the rear end wall of the driven cavity is rotatably provided with a driven shaft, a resetting gear meshed with the right, the winding is installed the chucking rope on the chucking take-up pulley, the opposite side of chucking rope extends the chucking intracavity and fix slide set up in the up end of the chucking piece in the chucking intracavity, the up end of chucking piece with fixedly connected with chucking spring between the up end wall in chucking chamber, the chucking piece can extend to in the elasticity fire damper and restrict the removal of elasticity fire damper.

Preferably, the heat sink including rotate set up in the right-hand member wall of impeller cavity and the right side extend to the impeller shaft of intermediate chamber intracavity, the right side of impeller shaft with the upside of jackshaft is through a pair of bevel gear pair connection, the left side of impeller shaft is fixed with the impeller, the inlet tube is installed to the left end wall upside intercommunication in storage chamber, the inlet tube with fixed the encircleing install the fixed intercommunication of one end of the cooling tube of terminal surface before the fire prevention bottom plate, the outlet pipe is installed to the lower extreme wall intercommunication in impeller cavity, the outlet pipe with the fixed intercommunication of the other end of cooling tube.

Preferably, overhaul the device including slide set up in stopper in the spacing intracavity, the rear end face of stopper with the spacing spring of fixedly connected with between the rear end wall in spacing chamber, the rear end face upside bilateral symmetry of box be provided with can with spacing chamber aligns and the opening draw-in groove towards the back, thereby the front side of stopper can extend to thereby restrict in the draw-in groove the up-and-down slip of box.

The beneficial effects are that: the protection device can protect the ammeter and the circuit inside the ammeter box in time after a fire disaster occurs, ensures the safety of the ammeter and the circuit inside the ammeter box by using the temperature reducing agent, reduces the loss, avoids the risk of electric leakage of the circuit due to high-temperature melting, is more convenient to maintain compared with the traditional ammeter box, and improves the maintenance efficiency.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a building electricity meter box convenient for maintenance, fire prevention and high temperature prevention;

FIG. 2 is a sectional view of the structure taken along the line A-A in FIG. 1;

FIG. 3 is a sectional view of the structure taken along the line B-B in FIG. 1;

FIG. 4 is a sectional view of the structure taken along the line C-C in FIG. 1;

fig. 5 is a structural sectional view in the direction D-D of fig. 1.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations and/or steps that are mutually exclusive.

The invention will now be described in detail with reference to fig. 1-5, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The building electricity meter box convenient for overhauling fireproof and high temperature prevention comprises a box body 10, wherein an electricity meter cavity 43 with a forward opening is arranged in the box body 10, a clamping cavity 71 with a downward opening is arranged in the middle of the upper end wall of the electricity meter cavity 43, a fireproof device is arranged in the electricity meter cavity 43 and comprises a fireproof bottom plate 65 fixedly arranged on the rear end wall of the electricity meter cavity 43, a plurality of electricity meters are arranged on the fireproof bottom plate 65, a rectangular annular fireproof baffle plate 66 fixedly connected with the rear end wall of the electricity meter cavity 43 is arranged on the outer side of the fireproof bottom plate 65, an elastic cavity 73 with a forward opening and a rectangular annular shape is arranged in the fireproof baffle plate 66, an elastic fireproof baffle plate 74 with a front end part capable of moving into the electricity meter cavity 43 is arranged in the elastic cavity 73 in a sliding mode, and an elastic spring 67 is fixedly connected between the rear end wall of the elastic fireproof baffle plate 74 and the rear end face of the elastic cavity 73, a second fireproof cavity 50 with a rightward opening is arranged in the left end wall of the electric meter cavity 43, a first fireproof cavity 33 with a leftward opening is arranged in the right end wall of the electric meter cavity 43, a fan cavity 41 with an upward opening is arranged in the lower end wall of the electric meter cavity 43, heat dissipation cavities 45 which enable the fan cavity 41 to be communicated with the outside are symmetrically arranged on the left end wall and the right end wall of the fan cavity 41, a heat dissipation device is arranged in the fan cavity 41, a pulley cavity 42 is arranged on the lower side of the fan cavity 41, a main motor 59 is fixed on the left side of the upper end wall of the pulley cavity 42, a recovery cavity 22 with a downward opening is arranged on the left side of the upper end wall of the electric meter cavity 43, a power-off device is arranged in the recovery cavity 22, a lifting cavity 15 with a rightward opening is arranged in the left end wall of the recovery cavity 22, a reset cavity 19 with a downward opening is arranged in the upper end wall of the recovery cavity 22, and a driven cavity 21 with a leftward opening is arranged on the right end wall of, a transmission cavity 13 is arranged at the left part above the lifting cavity 15, a fixed back plate 12 is arranged at the rear side of the box body 10, the fixed back plate 12 is provided with a sliding cavity 51 with a forward opening and a downward opening, the box body 10 is connected with the rear end wall of the fixed back plate 12 in a sliding way, a limiting cavity 54 with a forward opening is symmetrically arranged at the upper side of the rear end wall of the sliding cavity 51 at the left and right, the limit cavity 54 is internally provided with an overhauling device, ratchet cavities 60 positioned at the rear sides of the first fireproof cavity 33 and the second fireproof cavity 50 are symmetrically arranged at the left and right sides above the belt wheel cavity 42, a winding wire cavity 64 is arranged above the ratchet wheel cavity 60, a middle cavity 30 is arranged above one winding wire cavity 64 on the right side, an impeller cavity 27 is arranged on the left side of the middle cavity 30, a cooling device is arranged in the impeller cavity 27, and a storage cavity 24 is arranged on the left side of the impeller cavity 27.

Advantageously, the heat dissipation device comprises a baffle 37 fixedly arranged at an opening at the upper side of the fan cavity 41, the lower end wall of the fan cavity 41 is rotatably provided with a fan shaft 39 extending downwards into the pulley cavity 42, the upper side of the fan shaft 39 is fixedly provided with a fan 40, the main motor 59 is in power connection with a motor shaft 44 extending downwards into the pulley cavity 42 and upwards into the ratchet cavity 60, and the motor shaft 44 is connected with the fan shaft 39 through a set of pulleys.

Beneficially, the fire protection device includes a motor shaft 44 in power connection with the main motor 59, an upper side of the motor shaft 44 extends into one ratchet cavity 60 on the left side and is fixedly provided with a ratchet wheel 61, an upper end wall of the ratchet cavity 60 is rotatably provided with a winding shaft 11, an upper side of the winding shaft 11 passes through the winding cavity 64 and extends into the transmission cavity 13, a connecting wheel 62 is fixed on a lower side of the winding shaft 11, an eccentric rod 58 is fixed on an eccentric position of a lower end surface of the connecting wheel 62, an eccentric clamping block 57 is rotatably arranged on the eccentric rod 58, a torsion spring is fixedly connected between the eccentric clamping block 57 and the eccentric rod 58, the eccentric clamping block 57 can be in fit connection with the ratchet wheel 61, so that the ratchet wheel 61 drives the connecting wheel 62 to rotate through the eccentric clamping block 57, a winding wheel 63 fixedly connected with the winding shaft 11 is arranged in the winding cavity 64, a second fireproof plate 47 is slidably arranged in the second fireproof cavity 50, a second fireproof spring 49 is fixedly connected between the left end surface of the second fireproof plate 47 and the left end wall of the second fireproof cavity 50, a second fireproof rope 48 which extends into one winding cavity 64 on the left side and is wound on one winding wheel 63 on the left side is fixed on the left end surface of the second fireproof plate 47, a pulley shaft 36 which extends into the pulley cavity 42 on the lower side is rotatably arranged on the lower end wall of one ratchet cavity 60 on the right side, the lower side of the pulley shaft 36 is connected with the lower side of the motor shaft 44 through a group of pulleys, the upper side of the pulley shaft 36 is fixedly connected with the lower end surface of one ratchet wheel 61 on the right side, and an intermediate shaft 29 which extends into the intermediate cavity 30 through one winding cavity 64 on the right side on the upper side is rotatably arranged on the upper end wall of one ratchet cavity 60 on the right side, the downside of jackshaft 29 and one on right side up end fixed connection of fifth wheel 62, it is provided with first PLASTIC LAMINATED 31 to slide in first fire prevention chamber 33, the right-hand member face of first PLASTIC LAMINATED 31 with the first fire prevention spring 32 of fixedly connected with between the right-hand member wall in first fire prevention chamber 33, the right-hand member face of first PLASTIC LAMINATED 31 is fixed with one that extends to the right side in the spiral chamber 64 and the winding install one on the right side first fire prevention rope 34 on spiral wheel 63, first PLASTIC LAMINATED 31 with second PLASTIC LAMINATED 47 can ammeter chamber 43 internal connection and with elasticity fire prevention baffle 74 cooperation is connected and is made the ammeter of installing on fire prevention bottom plate 65 keep apart with external environment.

Beneficially, the power cut-off device includes a lifting plate 16 slidably disposed in the recovery cavity 22 and extending to the lifting cavity 15 from the left side, a power supply connector 70 having a lower side capable of extending to the ammeter cavity 43 and capable of sliding up and down is fixed on the lower side of the lifting plate 16, a lifting rod 14 having an upper side extending to the transmission cavity 13 is rotatably disposed on the upper end wall of the lifting cavity 15, the upper side of the lifting rod 14 is connected with the upper side of the winding shaft 11 through a set of belt pulleys, a reset block 17 having a lower side capable of extending to the recovery cavity 22 is slidably disposed in the reset cavity 19, a reset spring 18 is fixedly connected between the upper end surface of the reset block 17 and the upper end wall of the reset cavity 19, a driven shaft 20 is rotatably disposed on the rear end wall of the driven cavity 21, a reset gear 77 engaged with the right side of the reset block 17 is fixed on the front side of the driven shaft 20, the rear side of reset gear 77 is fixed with chucking take-up pulley 75, chucking rope 69 is installed in the winding on the chucking take-up pulley 75, the other side of chucking rope 69 extends to in the chucking chamber 71 and fix and set up in the up end of chucking piece 72 in the chucking chamber 71 slides, the up end of chucking piece 72 with fixedly connected with chucking spring 68 between the up end wall of chucking chamber 71, chucking piece 72 can extend to in the elasticity fire damper 74 and restrict the removal of elasticity fire damper 74.

Beneficially, the temperature reducing device includes an impeller shaft 28 rotatably disposed in a right end wall of the impeller cavity 27, and a right side of the impeller shaft 28 extends into the middle cavity 30, the right side of the impeller shaft 28 is connected with an upper side of the middle shaft 29 through a pair of bevel gear pairs, an impeller 26 is fixed on a left side of the impeller shaft 28, a water inlet pipe 23 is installed on an upper side of a left end wall of the storage cavity 24 in a communicating manner, the water inlet pipe 23 is fixedly communicated with one end of a cooling pipe 38 fixedly installed around a front end face of the fireproof bottom plate 65, a water outlet pipe 25 is installed on a lower end wall of the impeller cavity 27 in a communicating manner, and the water outlet pipe 25 is fixedly communicated with the.

Beneficially, the maintenance device includes a limiting block 53 slidably disposed in the limiting cavity 54, a limiting spring 55 is fixedly connected between a rear end face of the limiting block 53 and a rear end wall of the limiting cavity 54, the upper side of the rear end face of the box body 10 is bilaterally symmetrically provided with clamping grooves 52 which can be aligned with the limiting cavity 54 and have backward openings, and a front side of the limiting block 53 can extend into the clamping grooves 52 so as to limit the box body 10 from sliding up and down.

Under the initial condition, second PLASTIC LAMINATED 47 is located second fire prevention chamber 50, first PLASTIC LAMINATED 31 is located first fire prevention chamber 33, power supply connector 70 is located ammeter chamber 43 and communicates with the ammeter master switch, store and have the right amount of coolant in the chamber 24, the front side of stopper 53 is located the reciprocating of restriction box 10 in draw-in groove 52, chucking piece 72 restricts the removal of elasticity fire prevention baffle 74, elasticity spring 67 is in compression state, the downside of reset block 17 is located retrieves the chamber 22, can drive the fifth wheel 62 through eccentric fixture block 57 and eccentric rod 58 when ratchet 61 reverses, ratchet 61 idles during corotation, the total weight of box 10 is less than the elasticity of limiting spring 55.

When the fire-fighting box starts to work, the electric meter arranged on the front end surface of the fireproof bottom plate 65 works normally, the main motor 59 rotates in a positive rotation mode to drive the motor shaft 44 to rotate, the fan shaft 39 is driven to rotate through a group of belt pulleys to drive the fan 40 to rotate, heat in the electric meter cavity 43 is sucked into the fan cavity 41 and discharged through the heat dissipation cavity 45, the temperature in the electric meter cavity 43 is kept at a normal value, if a fire disaster happens in a building and spreads to the vicinity of the box body 10, the main motor 59 rotates in a reverse rotation mode to drive the left ratchet wheel 61 to rotate in a reverse rotation mode through the motor shaft 44, the left eccentric rod 58 is driven to do circular motion through the left eccentric clamping block 57, the left connecting wheel 62 rotates, the winding shaft 11 rotates, the left winding wheel 63 rotates, and the second fireproof rope 48 is loosened from the left winding wheel 63, so that the second fireproof plate 47 moves to the right side into the electric meter chamber 43 under the action of the second fireproof spring 49, and the winding shaft 11 drives the lifting rod 14 to rotate through a set of belt pulleys, thereby driving the lifting plate 16 to move upwards, so that the power supply connector 70 moves upwards into the recovery chamber 22 and is disconnected from the electric meter main switch, and simultaneously the lifting plate 16 drives the return block 17 upwards, thereby compressing the return spring 18, thereby rotating the return gear 77, thereby driving the clamping winding wheel 75 to rotate through the driven shaft 20, thereby winding the clamping rope 69 onto the clamping winding wheel 75, thereby moving the clamping block 72 upwards, thereby removing the restriction effect on the elastic fireproof baffle 74, so that the elastic fireproof baffle 74 moves to the front side under the action of the elastic spring 67 and is in close contact with the rear end face of the second fireproof plate 47, and simultaneously the motor shaft 44 drives the belt pulley 36 to rotate through a set of belt pulleys, thereby driving a ratchet wheel 61 on the right side to rotate, thereby driving an eccentric rod 58 on the right side to do circular motion through an eccentric clamping block 57 on the right side, and driving a connecting wheel 62 on the right side to rotate, thereby driving an intermediate shaft 29 to rotate, thereby driving a winding wheel 63 on the right side to rotate, thereby loosening the first fireproof rope 34 from the winding wheel 63 on the right side, thereby enabling the first fireproof plate 31 to move to the left side into the electric meter cavity 43 under the action of the first fireproof spring 32, and enabling the left end surface to be matched and connected with the right end surface of the second fireproof plate 47, at this time, the rear end surface of the first fireproof plate 31 is in close contact with the front end surface of the elastic fireproof baffle plate 74, meanwhile, the intermediate shaft 29 drives the impeller shaft 28 to rotate through the acceleration of a pair of bevel gear pairs, thereby driving the impeller 26 to rotate, thereby enabling the cooling agent in the storage cavity 24 to enter the impeller cavity 27, and then enter, so as to limit the temperature around the electric meter within a certain value, then the temperature is circulated in the cooling pipe 38 and enters the storage cavity 24 through the water inlet pipe 23, so as to reciprocate, when the lifting plate 16 is contacted with the upper end wall of the lifting cavity 15, the main motor 59 is stopped, at the moment, the cooling pipe 38 is filled with a temperature reducing agent, so that external heat and smoke cannot influence the electric meter circuit, when an external fire is extinguished, the eccentric clamping block 57 is tightly contacted with the ratchet wheel 61 through a professional tool, so that the elasticity of the torsion spring is always larger than the load of the ratchet wheel 61 driving the connecting wheel 62 to rotate, the ratchet wheel 61 can also drive the connecting wheel 62 to rotate in the forward rotation, the main motor 59 starts in the forward rotation, the lifting plate 16 drives the power supply connector 70 to move downwards, so that the power supply connector 70 is connected with the main switch of the electric meter, and the reset block 17 moves downwards under the action of the reset spring 18, so that the clamping rope 69 is loosened from the clamping wheel, so that the clamping block 72 moves downwards under the action of the clamping spring 68, but because the elastic fireproof baffle plate 74 is not reset, the clamping block 72 is still positioned in the clamping cavity 71, the professional appliance is taken down, the eccentric clamping block 57 and the ratchet wheel 61 are restored to the initial state, the second fireproof plate 47 returns to the second fireproof cavity 50 under the action of the second fireproof rope 48, the first fireproof plate 31 returns to the first fireproof cavity 33 under the action of the first fireproof rope 34, then the elastic fireproof baffle plate 74 is pressed towards the rear side, so that the clamping block 72 limits the elastic fireproof baffle plate 74 again, the elastic fireproof baffle plate 74 cannot move forwards, meanwhile, the cooling agent in the cooling pipe 38 returns to the storage cavity 24 and is stored, so as to reciprocate, when the electric meter needs to be overhauled, the box body 10 is pulled downwards forcefully, and the force of the box body 10 to the limiting spring 55 through the limiting block 53 is greater than the spring elasticity, thereby make stopper 53 remove to the rear side and follow draw-in groove 52 and shift out to make box 10 remove down under the effect of dead weight, then can overhaul, overhaul the back, upwards lift box 10, thereby make box 10 upwards reset, thereby make stopper 53 get back to again in the draw-in groove 52, reciprocal from this.

The beneficial effects are that: the protection device can protect the ammeter and the circuit inside the ammeter box in time after a fire disaster occurs, ensures the safety of the ammeter and the circuit inside the ammeter box by using the temperature reducing agent, reduces the loss, avoids the risk of electric leakage of the circuit due to high-temperature melting, is more convenient to maintain compared with the traditional ammeter box, and improves the maintenance efficiency.

The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.