CN216016154U - Power motor switch box for construction operation site - Google Patents

Abstract

The utility model discloses a construction operation scene power motor switch box belongs to switch box technical field. The utility model provides a construction operation scene power motor switch box, includes the box, the inside of box is provided with input and output, the inside of box is provided with isolator, earth leakage protection switch, contactor, motor comprehensive protector. The utility model discloses each parts cooperation, the safety of fully guaranteeing to use electricity sets up operation window can the direct operation earth leakage protection switch, need not to open the chamber door, avoids inside part and circuit to expose, arouses danger.

Description

Power motor switch box for construction operation site

Technical Field

The utility model relates to a switch box technical field especially relates to a construction operation scene power motor switch box.

Background

A power motor switch box belongs to high-risk equipment on an operation site. At present, a switch box used in construction is single in electrical control element, consists of an isolating switch, a circuit breaker and a leakage protector, and only has a basic leakage protection function.

However, in actual operation, closing and opening of the power line requires an operator to pull the breaker or the earth leakage protection switch device in the switch box. When the switch is pulled, the door of the switch box needs to be opened, so that the switch box can not be in a normally locked state. Therefore, the phenomenon that non-electricians break wiring illegally can occur, and the risk of electric shock accidents in construction operation is increased.

Meanwhile, the protection performance of the switch box body is poor, and when the switch box is used in an external environment, the sufficient safety protection effect cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that among the prior art the motor power switch box protective properties is poor, lead to the electric shock risk easily, the operation is used inconveniently, is violated the wiring, and the on-spot motor power switch box of a construction operation who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a power motor switch box on a construction operation site comprises a box body, wherein an input end and an output end are arranged inside the box body, an isolating switch, a leakage protection switch, a contactor and a motor comprehensive protector are arranged inside the box body, the input end is sequentially connected with the isolating switch, the leakage protection switch, the contactor and the motor comprehensive protector to the output end, a starting button, a stopping button and an emergency stopping button are arranged on a box door of the box body, and the starting button, the stopping button and the emergency stopping button are connected in a circuit of the contactor;

an operation window is arranged on the outer surface of the box door, the position of the operation window corresponds to the position of the leakage protection switch, and a sealing cover is arranged on the outer surface of the operation window.

Preferably, a protruding ring is arranged on the outer side of the operation window, a sealing rubber strip is arranged on the periphery of the protruding ring, and the sealing cover is sleeved on the outer side of the protruding ring.

Preferably, a barrier strip is arranged at the top of the front side of the box body, and the barrier strip protrudes forwards to cover the upper side of the box door.

Preferably, the left side of the box door is rotatably connected with the box body through a hinge.

Preferably, one blade of the hinge is fixedly connected with the box body, the sliding column is fixedly connected to the outer side of the other blade of the hinge, a sleeve is fixedly connected to the side face of the box door, the sliding column is inserted into the sleeve, and the sliding column penetrates through one end of the sleeve and is provided with an adjusting nut.

Preferably, a rubber strip is arranged on the inner side of the box door, which is in contact with the box body.

Preferably, a buckling device is arranged on the right side of the box body;

the buckle device is arranged on the right side surface of the box door and comprises a stand column and a rotary buckle plate, the stand column is arranged on the right side surface of the box door, and the rotary buckle plate is provided with a notch matched with the stand column.

Preferably, the position of the box door close to the right side is provided with a cam lock.

Compared with the prior art, the utility model provides a construction operation scene power motor switch box possesses following beneficial effect:

1. the utility model discloses, each part cooperation, the electric safety is used in abundant assurance, but sets up operation window direct operation earth leakage protection switch, need not to open the chamber door, avoids inside part and circuit to expose, arouses danger, and is by the wiring of breaking rule and rule.

2. The utility model is provided with the sealing cover, thereby avoiding dust, sundries and the like from entering and ensuring the sealing effect; the top is provided with a barrier strip, so that the protection effect is improved; the hinge is arranged on the left side, the distance between the box door and the box body is adjusted, and the sealing and protecting effects are further enhanced; the right side is provided with a buckling device, so that the box door is ensured to be closed, and further safety protection is ensured.

The part not involved in the device is the same as the prior art or can be realized by adopting the prior art, the components of the device are matched, the electricity utilization safety is fully ensured, the leakage protection switch can be directly operated by arranging the operation window, the box door does not need to be opened, and the exposure of the internal components and circuits is avoided, so that the danger is caused, and the illegal wiring is avoided; the sealing cover is arranged, so that dust, sundries and the like are prevented from entering, and the sealing effect is ensured; the top is provided with a barrier strip, so that the protection effect is improved; the hinge is arranged on the left side, the distance between the box door and the box body is adjusted, and the sealing and protecting effects are further enhanced; the right side is provided with a buckling device, so that the box door is ensured to be closed, and further safety protection is ensured.

Drawings

FIG. 1 is a schematic wiring diagram of the present invention;

FIG. 2 is a schematic structural view of the opened state of the case;

FIG. 3 is a schematic front view of the box;

FIG. 4 is a schematic cross-sectional view of the closure;

fig. 5 is a left side view schematic structure diagram of the present invention;

FIG. 6 is an enlarged schematic view of the structure at A in FIG. 5;

fig. 7 is a schematic right-view structural diagram of the present invention;

fig. 8 is an enlarged schematic view of the structure at B in fig. 7.

In the figure: 1. a box body; 101. a box door; 2. an input end; 3. an output end; 4. an isolating switch; 5. a leakage protection switch; 6. a contactor; 7. a motor comprehensive protector; 8. a start button; 9. a stop button; 10. an emergency stop button; 11. operating a window; 12. sealing the cover; 13. a raised ring; 14. sealing rubber strips; 15. blocking strips; 16. a hinge; 17. a sliding post; 18. a sleeve; 19. adjusting the nut; 20. a buckle device; 2001. a column; 2002. rotating the buckle plate; 21. a rotating tongue lock.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-8, a power motor switch box for construction job sites comprises a box body 1, an input end 2 and an output end 3 are arranged inside the box body 1, an isolating switch 4, a leakage protection switch 5, a contactor 6 and a motor comprehensive protector 7 are arranged inside the box body 1, the input end 2 is sequentially connected with the isolating switch 4, the leakage protection switch 5, the contactor 6 and the motor comprehensive protector 7 to the output end 3, a starting button 8, a stopping button 9 and an emergency stopping button 10 are arranged on a box door 101 of the box body 1, and the starting button 8, the stopping button 9 and the emergency stopping button 10 are connected in a circuit of the contactor 6.

Referring to fig. 1, a wiring diagram of a mounting part of a case 1 is shown. The top of the left side is an input end 2, the lower end of the left side is an output end 3, and the input end 2 and the output end 3 are respectively connected with an incoming line and an electric appliance.

Wherein QS is an isolating switch 4, QF is an earth leakage protection switch 5, KM is a contactor 6, FM is a motor comprehensive protector 7, SBst is a starting button 8, SBss is a stopping button 9, SBes is an emergency stopping button 10, and M is an electrical appliance connected with the output end 3.

The working states of the components are as follows:

(1) starting: and when the start button SBst is pressed, the coil of the contactor KM is electrified, the main contact and the auxiliary contact of the contactor KM are attracted and self-locked, and the electric appliance M runs.

(2) Normal shutdown operation: and when the stop button SBss is pressed down, the coil of the contactor KM loses power, the main contact and the auxiliary contact of the contactor KM are released and disconnected, and the electric appliance M stops running.

(3) Emergency shutdown operation: pressing an emergency stop button SBes, powering off a coil of the contactor KM, releasing and disconnecting a main contact and an auxiliary contact of the contactor KM, and stopping the motor M; before the emergency stop button SBes is not manually reset, the electromagnetic coil of the contactor KM is still in an open circuit state; at the moment, the start button SBst is pressed, and the accidental start of the electric appliance cannot be caused.

Simultaneously, this device possesses the fault protection function:

(1) short-circuit protection: when the circuit is short-circuited, the fuse of the isolating switch QS is fused due to the instantly increased short-circuit current, so that the short-circuit protection effect is achieved.

(2) Overload or open-phase protection: when an electrical appliance is overloaded or phase-loss occurs, a relay of the motor comprehensive protector FM acts, and a relay contact is connected in series in a power supply loop of a contactor coil; after the relay acts, the coil of the contactor KM is powered off, the main contact and the auxiliary contact of the contactor KM are released and disconnected at the same time, and the motor stops running, so that the motor is protected. The time delay circuit is used for avoiding the starting current of the motor, and the time length of the time delay circuit is adjustable; the adjusting circuit is used for accurately setting the action current according to the working current of the protected motor.

(3) And (3) electric leakage protection: when the electricity leakage occurs to the power circuit, the leakage protection switch QF acts to realize the leakage protection function; preferably, the leakage protection switch selects a model with the action current below 30mA and the action time less than 0.1S so as to ensure that the leakage protection switch is less than the human body ventricular fibrillation current.

All parts in the box body 1 are matched, so that the electricity utilization safety is fully ensured.

An operation window 11 is arranged on the outer surface of the box door 101, and the position of the operation window 11 corresponds to the position of the leakage protection switch 5; the leakage protection switch 5 can be directly operated through the operation window 11 without opening a box door, thereby avoiding exposure of internal components and circuits, causing danger and illegal wiring.

Further, the outer surface of the operation window 11 is provided with a sealing cover 12; when not in operation, the operation window 11 is closed to prevent dust, foreign matters and the like from entering.

Furthermore, a raised ring 13 is arranged on the outer side of the operation window 11, a sealing rubber strip 14 is arranged on the periphery of the raised ring 13, and the sealing cover 12 is sleeved on the outer side of the raised ring 13. The sealing effect is ensured by the arranged sealing rubber strip 14.

The top position of the front side of the box body 1 is provided with a barrier strip 15, and the barrier strip 15 protrudes forwards to cover the upper side of the box door 101. In a damp or dust environment, impurities and the like are prevented from entering the box body 1 from the upper side of the box door 101, and the protection effect is improved.

The left side of the door 101 is pivotally connected to the cabinet 1 by hinges 16.

Specifically, one blade of the hinge 16 is fixedly connected with the box body 1, the outer side of the other blade of the hinge 16 is fixedly connected with the sliding column 17, the side surface of the box door 101 is fixedly connected with the sleeve 18, the sliding column 17 is inserted into the sleeve 18, one end of the sleeve 18 is flush with the front surface of the box door 101, and one end, penetrating through the sleeve 18, of the sliding column 17 is provided with the adjusting nut 19. The adjusting nut 19 is rotated to adjust the extending length of the sliding column 17; when the refrigerator is used in daily life, the distance between the door 101 and the refrigerator can be adjusted to be normal; in the opening state, the extending length of the sliding column 17 is properly increased, the box door 101 cannot be closed, and the state can be adopted when internal components are operated for a long time, so that the trouble caused by automatic closing of the box door 101 in the operation process is avoided; meanwhile, in a closed state, the distance between the box door 101 and the box body 1 can be adjusted, so that the sealing and protection effects are enhanced.

The inboard of chamber door 101 and the contact of box 1 is provided with the rubber strip, and the rubber strip encircles the inboard round of chamber door 101, strengthens the sealed effect.

The right side of the box 1 is provided with a locking device 20 to enhance the closing effect of the right side of the door 101.

Specifically, the locking device 20 is composed of a pillar 2001 disposed on the right side of the door 101, and a rotating buckle plate 2002 disposed on the right side of the box body 1, wherein the rotating buckle plate 2002 is provided with a notch matching with the pillar 2001. The pillar 2001 is disposed perpendicular to the right side surface of the door 101; the rotary buckle plate 2002 is rotatably connected with the box body 1 through a pin shaft which is arranged on the right side surface of the box body 1 and penetrates through the rotary buckle plate 2002. When the locking device is used, the rotating buckle plate 2002 is rotated anticlockwise, the notch clamps the upright post 2001, and the buckling locking is achieved. Preferably, the position of the upright post 2001 is set to be higher than the position of the pin shaft, and the buckling effect is enhanced by the gravity action of the rotating buckle plate 2002.

The position of the door 101 near the right side is provided with a cam lock 21.

When the utility model is used, the power utilization device at the output end 3 starts to operate by pressing the starting button 8; the electric appliance is normally stopped by pressing the stop button 9; when the emergency shutdown is needed, the emergency stop button 10 is pressed, and the electric appliance stops running immediately; meanwhile, before the emergency stop button 10 is manually reset, the start button 8 is pressed, so that the electric appliance cannot be started accidentally; when an electric leakage fault occurs, triggering the action of an electric leakage protection switch 5; after the electric leakage fault is eliminated, the box door does not need to be opened, observation can be carried out through the operation window, and the electric leakage protection switch is reset.

In the utility model, all the parts are matched to fully ensure the electricity safety; the leakage protection switch 5 can be directly operated by arranging the operation window 11 without opening a box door, so that the danger caused by exposure of internal components and circuits is avoided; the sealing cover 12 is arranged to prevent dust, sundries and the like from entering and ensure the sealing effect; the top is provided with a barrier strip 15, so that the protection effect is improved; the hinge 16 is arranged on the left side, so that the distance between the box door 101 and the box body 1 is adjusted, and the sealing and protecting effects are further enhanced; the right side is provided with a buckle device 20 to ensure the door 101 to be closed, and further ensure safety protection.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (8)

1. The power motor switch box for the construction operation site comprises a box body (1) and is characterized in that an input end (2) and an output end (3) are arranged inside the box body (1), an isolating switch (4), a leakage protection switch (5), a contactor (6) and a motor comprehensive protector (7) are arranged inside the box body (1), the input end (2) is sequentially connected with the isolating switch (4), the leakage protection switch (5), the contactor (6) and the motor comprehensive protector (7) to the output end (3), a starting button (8), a stopping button (9) and an emergency stopping button (10) are arranged on a box door (101) of the box body (1), and the starting button (8), the stopping button (9) and the emergency stopping button (10) are connected in a circuit of the contactor (6);

an operation window (11) is formed in the outer surface of the box door (101), the position of the operation window (11) corresponds to the position of the leakage protection switch (5), and a sealing cover (12) is arranged on the outer surface of the operation window (11).

2. The power motor switch box for the construction operation site as claimed in claim 1, wherein a raised ring (13) is arranged on the outer side of the operation window (11), a sealing rubber strip (14) is arranged on the periphery of the raised ring (13), and the sealing cover (12) is sleeved on the outer side of the raised ring (13).

3. The power motor switch box for the construction operation site as claimed in claim 1, wherein a stop strip (15) is arranged at the top position of the front side of the box body (1), and the stop strip (15) protrudes forwards to cover the upper side of the box door (101).

4. A construction site power motor switch box according to claim 1, characterized in that the left side of the box door (101) is rotatably connected with the box body (1) through a hinge (16).

5. A construction operation site power motor switch box as claimed in claim 4, characterized in that one blade of the hinge (16) is fixedly connected with the box body (1), a sliding column (17) is fixedly connected to the outer side of the other blade of the hinge (16), a sleeve (18) is fixedly connected to the side surface of the box door (101), the sliding column (17) is inserted into the sleeve (18), and an adjusting nut (19) is arranged at one end of the sliding column (17) penetrating through the sleeve (18).

6. The power motor switch box for the construction operation site as claimed in claim 1, wherein a rubber strip is arranged on the inner side of the box door (101) contacting with the box body (1).

7. A construction operation site power motor switch box as claimed in claim 1, characterized in that a buckling device (20) is arranged on the right side of the box body (1);

the buckling device (20) is composed of an upright post (2001) arranged on the right side surface of the box door (101) and a rotary buckle plate (2002) arranged on the right side surface of the box body (1), and the rotary buckle plate (2002) is provided with a notch matched with the upright post (2001).

8. The power motor switch box for the construction operation site as claimed in claim 1, wherein a turn latch lock (21) is arranged at a position of the box door (101) close to the right side.

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