CN104064969A - Combined distribution box - Google Patents

Abstract

The invention relates to the technical field of distribution boxes, and in particular discloses a combined distribution box, which includes a distribution box body and a box door. There are several boxes inside the distribution box body, and there are The fixed plate is provided with a guide rail for supporting the box body, rollers matching the guide rails are provided on both sides of the lower end of the box body, a limit block is provided on the rear side of the bottom surface of the box body, and a connecting piece is provided on the front side of the bottom surface of the box body , There is a connection hole on the connecting piece, a stopper is provided on the inner end of the guide rail on the fixed plate, a limit hook is provided on the stopper, a threaded hole is provided on the outer end of the guide rail, and the locking bolt passes through the connection hole and the threaded hole The box is equipped with power distribution components, and the outside of the box is respectively equipped with conductive busbars. The two adjacent conductive busbars are connected through conductive sleeves. Electric box can also be installed in E-HOUSE (electric house). Therefore, the present invention has the beneficial effect of more convenient installation, disassembly and maintenance.

Description

A combined distribution box

technical field

The invention relates to the technical field of distribution boxes, in particular to a combined distribution box.

Background technique

Power distribution box is assembled in closed or semiclosed metal safe by electrical wiring requirement by switchgear, measuring instrument, protective device and auxiliary equipment or on screen width, forms low-voltage distribution box. During normal operation, the circuit can be connected or disconnected by manual or automatic switch, and the circuit can be cut off or alarmed by means of protective electrical appliances in case of failure or abnormal operation. Various parameters in operation can be displayed by means of measuring instruments, and some electrical parameters can also be adjusted. , to prompt or send out signals for deviations from normal working conditions, and is often used in factories, buildings, and substations. A common distribution box generally includes a box body and a box door, and various power distribution components are installed in the box body. During maintenance, it is necessary to disassemble and overhaul all the various power distribution components in the power distribution box. Installation, the entire disassembly and installation is a waste of time, and the labor intensity of the maintenance workers is high; sometimes in order to reduce the disassembly and installation of the power distribution components, the maintenance is directly carried out in the small space in the distribution box. A greater difficulty came.

Chinese patent authorization announcement number: Chinese patent authorization announcement number: CN202495691U, authorized announcement date October 17, 2012, discloses a kind of distribution box, including electrical box door, drawing board, distribution box frame and distribution box body. The door of the distribution box, the drawing board, the frame of the distribution box and the body of the distribution box are integrated, and the door of the distribution box is located in front of the distribution box. The frame of the distribution box and the door of the distribution box can be opened and closed, and the drawing board in front of the door of the distribution box can be replaced according to user preferences and occasions. Its shortcoming is that the power distribution components inside the distribution box of this kind are all fixedly installed in the distribution box, and they need to be dismantled completely when overhauling, and only need to be installed as a whole after overhauling, overhauling is very troublesome.

Contents of the invention

In order to overcome the shortcomings of the prior art that all the power distribution components in the distribution box are fixedly installed in the distribution box, and the installation, disassembly and maintenance are very inconvenient, the present invention provides a combined type that is more convenient for installation, disassembly and maintenance. distribution box.

In order to achieve the above object, the present invention adopts the following technical solutions:

A combined distribution box, including a distribution box body and a box door, the distribution box body is provided with a number of boxes in sequence from top to bottom, and the left and right sides of the distribution box body are provided with fixing plates for fixing There are guide rails for supporting the box on the board, rollers matching with the guide rails are arranged on both sides of the lower end of the box, limit blocks are set on the back side of the bottom surface of the box body, connecting pieces are set on the front side of the bottom surface of the box body, and there are connecting pieces on the connecting pieces. There are connection holes, the fixed plate is located at the inner end of the guide rail, and there is a stopper on the stopper. There are power distribution components inside, conductive busbars are arranged on the outside of the box body, two adjacent conductive busbars are connected by conductive sleeves, and a rain shield is also installed on the top of the distribution box.

When installing, put the power distribution components into the box respectively, then put the box into the distribution box through the guide rail, the rear end of the box is limited by the limit hook and the limit block, and the front end of the box is limited by the locking bolt and the threaded hole Connection, so as to realize the front and rear, upper and lower limits of the box, the box is very stable, and then connect the bus bar outside the box through the conductive sleeve, when maintenance is required, remove the conductive sleeve, and each box can be taken out separately , For maintenance, there is no need to disassemble the overall distribution box, and it has to be reinstalled into the distribution box body after the maintenance, which is convenient for maintenance and more convenient for installation and disassembly.

As a preference, gaps are provided between the rear side, left side, and right side of the box body and the distribution box body, gaps are also provided between two adjacent boxes, and three inlets are provided on the rear side of the distribution box body. An air outlet, the center of the box door is provided with an air outlet, and an exhaust fan is arranged at the air outlet. The gap is convenient for heat dissipation. After the exhaust fan is turned on, the outside air enters the distribution box from the three air inlets, and then absorbs the heat emitted by the power distribution components and is discharged from the air outlet. The heat dissipation effect is good and the service life is long.

Preferably, the inner end of the guide rail is rotationally connected to the fixed plate, and the fixed plate is provided with a cam for supporting the guide rail on the lower side of the outer end of the guide rail, and a rotating arm is provided on one side of the cam, and the rotating arm is L-shaped. Structure, the locking bolt is threadedly connected with the outer end of the rotating arm. When the rotating arm is in the vertical position, the outer end of the guide rail is higher than the inner end of the guiding rail; when the rotating arm turns 90 degrees from the vertical state, the locking bolt When connecting with the threaded hole at the end of the guide rail, the height of the outer end and the inner end of the guide rail is the same; when the pivoting arm turns 90 degrees from the vertical state to the other direction, the outer end of the guide rail is lower than the inner end of the guide rail. When the cabinet needs to be installed, turn the rotating arm so that the rotating arm is in a vertical position. At this time, the largest diameter on the cam supports the outer end of the guide rail. The guide rail slopes downward from the outer end to the inner end, and the rollers on the cabinet follow the slope Slide the guide rail into the inside of the distribution box body, and then turn the rotating arm 90 degrees. At this time, the height of the inner end of the guide rail is the same as that of the outer end. After the locking bolt passes through the connecting hole, it is connected with the threaded hole at the end of the guide rail. , will not tilt, when the box needs to be dismantled, open the locking bolt, turn the arm to the other direction 180 degrees, the smallest diameter of the cam will contact the outer end of the guide rail, and the guide rail will tilt upward from the outer end to the inside, and the box will be It can be moved out of the distribution box body with very little effort, and the whole installation and disassembly are very convenient.

As a preference, a rotating arm positioning plate is also provided between the fixed plate and the cam, and a number of elastic positioning beads are arranged on the rotating arm positioning plate. Reverses the orientation of the 90 degree position. Positioning at three positions can effectively prevent the natural rotation of the cam during the installation, disassembly and removal of the cabinet. When the rotating arm passes through the elastic positioning beads, the elastic positioning beads can be retracted into the positioning plate of the rotating arm without interference .

As a preference, the limit hook is L-shaped and connected to the outside of the block in rotation, the block is provided with a slide hole, the slide hole is provided with a push rod, the lower end of the limit hook is provided with a sliding sleeve, and one end of the push rod Hinged with the sliding sleeve, the other end of the push rod is fixed with a pressure block, the slide hole is a stepped hole, and the push rod is provided with a pressure spring at the position between the step of the slide hole and the pressure block. The box body slides to the stopper along the slide rail, the limit block on the box body presses the pressure block, the pressure block pushes the ejector rod to move outward, the sliding sleeve drives the limit hook to rotate, and the head of the limit hook hooks the limit The upper end of the position block is limited. When the box is pulled out, the pressure spring will reset, and the limit hook will be disengaged automatically, which is convenient for taking out the box.

Preferably, the box door includes an upper box door, a middle box door and a lower box door, one end of the upper box door, the middle box door and the lower box door is hinged to the distribution box body, and the other end is connected to the distribution box body. Through the lock connection, the upper ends of the middle box door and the lower box door are extended to form ribs, and the outer side of the box body corresponding to the upper box door is provided with a main power distribution switch.

Therefore, the present invention has the following beneficial effects: (1) When the box is installed, the guide rail is high outside and low inside, which facilitates the box to slide into the distribution box body, and the rear end of the box is limited by the limit hook and the limit block, and the box The front end of the body is limited by the locking bolt on the rotating arm. The limit is stable and reliable. When taking out the cabinet, turn the rotating arm so that the guide rail is low on the outside and high on the inside, and the cabinet can be easily slid out. It is easy to disassemble and repair; (2) There is a gap between the box body and the distribution box body, which facilitates the heat dissipation of the power distribution components; (3) When the box door is closed, the lower end of the upper box door (middle box door) presses against the stopper of the middle box door (lower box door). Therefore, the box door can only be opened sequentially from top to bottom, and the main power distribution switch can be cut off at the first time, preventing the middle box door and the lower box door from being opened directly and forgetting to cut off the main power distribution switch during maintenance, which is safer to use.

Description of drawings

Figure 1 is a front view of the present invention.

Figure 2 is a rear view of the present invention.

Fig. 3 is a schematic diagram of the state of the cam and the guide rail when the box body is installed in the present invention.

Fig. 4 is a schematic diagram of the state of the cam and the guide rail after the box body is installed in the present invention.

Fig. 5 is a schematic diagram of the state of the cam and the guide rail when the box body is disassembled in the present invention.

FIG. 6 is a partially enlarged schematic diagram of A in FIG. 1 .

FIG. 7 is a partially enlarged schematic diagram of part B in FIG. 4 .

In the figure: distribution box body 1 box door 2 box body 3 fixed plate 4 guide rail 5 roller 6 limit block 7 connecting piece 8 connection hole 9 stopper 10 limit hook 11 threaded hole 12 conductive bus bar 13 rain shield 14 air inlet 15 Exhaust fan 16 Cam 17 Rotary arm 18 Locking bolt 19 Rotary arm positioning plate 20 Elastic positioning bead 21 Sliding hole 22 Push rod 23 Pressure block 24 Compression spring 25 Upper box door 26 Middle box door 27 Lower box door 28 Lock 29 Block Side 30 fuse 31 sliding sleeve 32.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

As shown in Figure 1, a combined distribution box includes a distribution box body 1 and a box door 2. Three boxes 3 are arranged in the distribution box body 1 from top to bottom, and each side of the box is provided with There are cooling holes, the left and right sides of the distribution box body are provided with fixed plates 4, and the fixed plates are provided with guide rails 5 for supporting the box body, and the lower sides of the box body are provided with rollers 6 that cooperate with the guide rails, and the bottom surface of the box body The rear side is provided with a limit block 7, the bottom front side of the box is provided with a connecting piece 8, the connecting piece is provided with a connecting hole 9, the inner end of the guide rail is provided with a stopper 10 on the fixed plate, and a limit hook 11 is provided on the stopper , the outer end of the guide rail is provided with threaded holes 12, the box is provided with power distribution components, and the outside of the box is respectively provided with conductive busbars 13, and the adjacent two conductive busbars are connected by conductive sleeves, each box The outer side of the body is also provided with a fuse 31 connected to the conductive bus bar, and the top of the distribution box is also provided with a rain shield 14 . In this embodiment, this kind of distribution box can be installed in E-HOUSE (electrical house) alone or combined in parallel.

As shown in Fig. 3, Fig. 4 and Fig. 5, the inner end of the guide rail 5 is rotationally connected with the fixed plate, and the lower side of the outer end of the guide rail on the fixed plate is provided with a cam 17 for supporting the guide rail. Diameter and small diameter, the opposite side of the large diameter of the cam is provided with a rotating arm 18, the rotating arm is in an L-shaped structure, and the locking bolt 19 is threaded with the outer end of the rotating arm. When the rotating arm is in a vertical position, that is, the rotating arm is in the In the position shown in Figure 3, the large diameter part on the cam supports the outer end of the guide rail. The outer end of the guide rail is higher than the inner end of the guide rail. The included angle of the guide rail is 5 degrees. When the box is installed, it can slide into the distribution box body along the guide rail. ; After the rotating arm has turned 90 degrees clockwise from the vertical state, that is, the rotating arm is in the position shown in Figure 4, and the mid-diameter part of the cam supports the outer end of the guide rail. The height of the end and the inner end is the same, and the locking bolt extends from the connecting hole and connects with the threaded hole at the end of the guide rail, so as to limit the box body; At this time, the small diameter part of the cam supports the outer end of the guide rail, and the outer end of the guide rail is lower than the inner end of the guide rail. After holding the box, the box automatically slides out slowly along the guide rail, and the disassembly is very convenient. As shown in Figure 6, a rotating arm positioning plate 20 is also provided between the fixed plate 4 and the cam 17, and a positioning bead hole is provided on the rotating arm positioning plate, and an elastic positioning bead 21 is arranged in the positioning bead hole. A spring is arranged between the holes, and when the pivoting arm rotates past the elastic positioning beads, the elastic positioning beads can be retracted into the positioning bead holes. When the pivoting arm is at the positions shown in Fig. The limit of the elastic positioning beads prevents the natural rotation of the cam after being pressed by the guide rail.

As shown in Figure 1 and Figure 2, there is a gap between the rear side, left side, and right side of the box body 3 and the distribution box body, and a gap is also provided between two adjacent box bodies, and the distribution box body The rear side of the box is provided with three air inlets 15, the center of the box door is provided with an air outlet, and the air outlet is provided with an exhaust fan 16; the box door 2 includes an upper box door 26, a middle box door 27 and a lower box door 28, and the upper box door 1. One end of the middle box door and the lower box door is hinged with the distribution box body, and the other end is connected with the distribution box body through a lock 29. The upper ends of the middle box door and the lower box door extend to form a rib 30, which is connected with the upper box. The outer side of the box body corresponding to the door is provided with a power distribution master switch.

As shown in Figure 7, the limit hook 11 is L-shaped and is rotationally connected with the outside of the block 10, the block is provided with a slide hole 22, the slide hole is provided with a push rod 23, and the lower end of the limit hook is provided with a sliding sleeve 32 , one end of the push rod is hinged with the sliding sleeve, the other end of the push rod is fixed with a pressure block 24, the slide hole is a stepped hole, and the position between the step of the slide hole and the pressure block on the push rod is provided with a stage clip 25. The box body slides to the stopper along the slide rail, the limit block on the box body presses the pressure block, the pressure block pushes the ejector rod to move outward, the sliding sleeve drives the limit hook to rotate, and the head of the limit hook hooks the limit The upper end of the position block is limited. When the box is pulled out, the pressure spring will reset, and the limit hook will be disengaged automatically, which is convenient for taking out the box.

In conjunction with the accompanying drawings, the method of use of the present invention is as follows: the power distribution components are installed in three boxes, and the outside of the three boxes are connected by conductive bus bars. When installing, first adjust the guide rail to the state shown in Figure 3, and then install The box, the rollers at the bottom of the box slowly slide into the distribution box body along the slope of the guide rail, which makes the installation more convenient. After the box is completely slid into the guide rail, the limit block at the inner end of the box contacts the pressure block to push the ejector rod to move , the ejector rod drives the limit hook to hook the upper end of the limit block, then turns the rotating arm to adjust the rotating arm to the position shown in Figure 4, and the locking bolt passes through the connecting hole to connect with the threaded hole at the end of the guide rail to realize the cabinet When the distribution box is in use, turn on the exhaust fan to dissipate heat. The heat dissipation effect is good and the service life is long. Cut off the power distribution main switch, then disconnect the connection of the conductive busbar between the two boxes, then turn the pivoting arm to the position shown in Figure 6, hold the outside of the box, and the box can slowly move along the guide rail. Slide out and access the power distribution components inside the box. Therefore, the present invention has the following beneficial effects: (1) When the box is installed, the guide rail is high outside and low inside, which facilitates the box to slide into the distribution box body, and the rear end of the box is limited by the limit hook and the limit block, and the box The front end of the body is limited by the locking bolt on the rotating arm. The limit is stable and reliable. When taking out the cabinet, turn the rotating arm so that the guide rail is low on the outside and high on the inside, and the cabinet can be easily slid out. It is easy to disassemble and repair; (2) There is a gap between the box body and the distribution box body, which facilitates the heat dissipation of the power distribution components; (3) When the box door is closed, the lower end of the upper box door (middle box door) presses against the stopper of the middle box door (lower box door). Therefore, the box door can only be opened sequentially from top to bottom, and the main power distribution switch can be cut off at the first time, preventing the middle box door and the lower box door from being opened directly and forgetting to cut off the main power distribution switch during maintenance, which is safer to use.

Claims (6)

1. A combined distribution box, including a distribution box body (1) and a box door (2), characterized in that, the distribution box body (1) is provided with several boxes sequentially from top to bottom (3), there are fixed plates (4) on the left and right sides of the distribution box body, guide rails (5) for supporting the box body are arranged on the fixed plate, and rollers (6) that cooperate with the guide rails are arranged on both sides of the lower end of the box body ), the rear side of the bottom of the box is provided with a limit block (7), the bottom front of the box is provided with a connecting piece (8), the connecting piece is provided with a connecting hole (9), and the fixed plate is located at the inner end of the guide rail. Stopper (10), the stopper is provided with a limit hook (11), the outer end of the guide rail is provided with a threaded hole (12), and the locking screw (19) is bolted through the connecting hole to connect with the threaded hole, and the box body Power distribution components are provided, conductive busbars (13) are respectively provided on the outside of the box body, two adjacent conductive busbars are connected through conductive sleeves, and a rain shield (14) is also provided on the top of the distribution box. 2. A combined distribution box according to claim 1, characterized in that there is a gap between the rear side, left side, and right side of the box body (3) and the distribution box body, and two adjacent Also be provided with gap between each box body, the rear side of distribution box body is provided with three air inlets (15), and the center of box door is provided with air outlet, and air outlet place is provided with blower fan (16). 3. A combined distribution box according to claim 1 or 2, characterized in that the inner end of the guide rail (5) is rotationally connected to the fixed plate, and the fixed plate is located on the lower side of the outer end of the guide rail. For the cam (17) supporting the guide rail, one side of the cam is provided with a rotating arm (18), the rotating arm is in an L-shaped structure, and the locking bolt (19) is threadedly connected In the vertical position, the outer end of the guide rail is higher than the inner end of the guide rail; when the rotating arm is rotated 90 degrees from the vertical state, when the locking bolt is connected with the threaded hole at the end of the guide rail, the height of the outer end and the inner end of the guide rail are the same ; After the pivoting arm turns 90 degrees to another direction from the vertical state, the outer end of the guide rail is lower than the inner end of the guide rail. 4. A combined distribution box according to claim 3, characterized in that a pivot arm positioning plate (20) is provided between the fixed plate (4) and the cam (17), and a pivot arm positioning plate is provided on the pivot arm positioning plate. Several elastic positioning beads (21) are arranged, and the elastic positioning beads are used for the positioning of the pivoting arm in the vertical position, vertical forward rotation of 90 degrees, and vertical reversal of 90 degrees. 5. A combined distribution box according to claim 1 or 2, characterized in that the limit hook (11) is L-shaped and connected to the outside of the stopper (10) in rotation, and the stopper is provided with a sliding hole (22), the sliding hole is provided with a push rod (23), the lower end of the limit hook is provided with a sliding sleeve (32), one end of the push rod is hinged with the sliding sleeve, and the other end of the push rod is fixed with a pressure block ( 24), the sliding hole is a stepped hole, and a pressure spring (25) is provided on the push rod between the step of the sliding hole and the pressing block. 6. A combined distribution box according to claim 1, characterized in that, the box door (2) includes an upper box door (26), a middle box door (27) and a lower box door (28) One end of the upper box door, middle box door and lower box door is hinged with the distribution box body, and the other end is connected with the distribution box body through a lock (29). The upper ends of the middle box door and the lower box door extend to form a stop Side (30), the outside of the box body corresponding to the upper box door is provided with a power distribution master switch.