CN210577581U

CN210577581U - Waterproof junction box for tunnel

Info

Publication number: CN210577581U
Application number: CN201921520200.4U
Authority: CN
Inventors: 吴超; 王帅
Original assignee: Luoyang Yonggu Electric Equipment Co Ltd
Current assignee: Luoyang Yonggu Electric Equipment Co Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-05-19
Anticipated expiration: 2029-09-12

Abstract

The utility model provides a waterproof junction box for tunnel, is including can dismantling lid and the box body of connection, offers the through-hole that is used for installing the mounting hole of water joint and is used for wearing to establish the pencil on the box body, the slot has been seted up to the bottom of lid, the top an organic whole of box body is connected with the bellying corresponding with the slot, is provided with the sealing washer between bellying and the lid, the box body outside be provided with the corresponding sealed unit of through-hole, sealed unit include two with box body sliding connection's clamp compression block, seted up the semicircle groove on the clamp compression block, the cover is equipped with soft sealed the pad on the pencil, two clamp compression blocks move in opposite directions make soft sealed pad compressive deformation and fill up the gap between pencil. The utility model provides a tunnel is with waterproof junction box, sealing performance is better, can protect the cable effectively.

Description

Waterproof junction box for tunnel

Technical Field

The utility model relates to a tunnel construction technical field, specific waterproof junction box is used in tunnel that says so.

Background

In the construction of an electric railway project, it is necessary to control equipment in a tunnel, and therefore, it is necessary to erect a line on a tunnel wall. In order to reduce the number of wire harnesses and reduce the wiring difficulty, the wire harnesses are required to be gathered by mounting a junction box on the wall of the tunnel. Because the junction box can cause inside metal corrosion after waterproof inefficacy, has potential safety hazards such as short circuit, open circuit, and tunnel equipment has great inconvenience in the aspect of maintenance and maintenance, consequently has very high requirement to tunnel junction box's sealing performance and mounting means. The junction box in the prior art mostly adopts a mode of increasing a sealing ring to realize water resistance, and because gaps exist among cables in a cable bundle inevitably, the effect of the sealing ring is very limited.

SUMMERY OF THE UTILITY MODEL

In order to solve the not enough among the prior art, the utility model provides a waterproof junction box is used in tunnel, sealing performance is better, can protect the cable effectively.

In order to achieve the above object, the utility model discloses a concrete scheme does: the utility model provides a waterproof junction box for tunnel, is including can dismantling lid and the box body of connection, offers the through-hole that is used for installing the mounting hole of water joint and is used for wearing to establish the pencil on the box body, the slot has been seted up to the bottom of lid, the top an organic whole of box body is connected with the bellying corresponding with the slot, is provided with the sealing washer between bellying and the lid, the box body outside be provided with the corresponding sealed unit of through-hole, sealed unit include two with box body sliding connection's clamp compression block, seted up the semicircle groove on the clamp compression block, the cover is equipped with soft sealed the pad on the pencil, two clamp compression blocks move in opposite directions make soft sealed pad compressive deformation and fill up the gap between pencil.

As a preferred scheme, box body fixedly connected with base, the base is through a plurality of fastening bolt and tunnel inner wall fixed connection, offers the fixed orifices that is used for wearing to establish fastening bolt on the base.

As a preferred scheme, the peripheral side of the box cover is integrally connected with a connecting part, and the connecting part is fixedly connected with the box body through a plurality of connecting bolts.

As a preferred scheme, the connecting portion is integrally connected with a connecting sleeve, the connecting bolt is arranged in the connecting sleeve, a channel corresponding to the connecting sleeve is formed in the box body, the channel penetrates through the base, and the connecting bolt is locked by the connecting nut after extending into the channel.

As a preferred scheme, two dovetail grooves are formed in the outer side of the box body, dovetail slide blocks are arranged in the dovetail grooves in a sliding mode, and the two dovetail slide blocks are correspondingly connected with the two pressing blocks.

As an optimal scheme, the pressing block is provided with inclined slideways, the distance between the two slideways in the direction from the inside to the outside of the box body is gradually reduced, the slideways are communicated with through grooves penetrating through the side wall of the pressing block, movable balls are arranged in the slideways in a sliding mode, the movable balls are fixedly connected with connecting rods, the connecting rods penetrate out of the through grooves, the two connecting rods are fixedly connected with movable plates together, through holes corresponding to the through holes are formed in the movable plates, and the wire harnesses penetrate through the through holes.

As a preferred scheme, the fixed two spacing sleeves that are provided with in the outside of box body, the fixed permanent magnet that is provided with in the spacing sleeve, two iron guide bars of fly leaf fixedly connected with, iron guide bar with the connecting rod is parallel to each other, and two iron guide bars insert respectively in two spacing sleeves.

As a preferred scheme, the box body is rectangular, the through holes are respectively formed in two side walls of the box body, which extend along the width direction, and the mounting holes are respectively formed in two side walls of the box body, which extend along the length direction.

Has the advantages that: the utility model discloses effectively solved and had the gap and caused the not good problem of sealed effect between the cable to the waterproof performance of junction box has effectively been improved.

Drawings

Fig. 1 is a top view of the present invention;

fig. 2 is a side partial cross-sectional view of the present invention;

FIG. 3 is an end sectional view of the present invention;

fig. 4 is a schematic structural view of the sealing unit in a sealed state;

fig. 5 is a schematic view of the structure of the sealing unit in a relaxed state.

Description of the drawings: 1-base, 2-fixing hole, 3-connecting part, 4-connecting sleeve, 5-connecting bolt, 6-box cover, 7-mounting hole, 8-connecting nut, 9-box body, 10-through hole, 11-slot, 12-sealing ring, 13-lug, 14-limiting sleeve, 15-permanent magnet, 16-iron guide rod, 17-movable plate, 18-through groove, 19-movable ball, 20-connecting rod, 21-slideway, 22-dovetail slide block, 23-wiring harness, 24-through hole, 25-soft sealing gasket, 26-pressing block, 27-dovetail groove and 28-semicircular groove.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 5, a waterproof junction box for a tunnel includes a box cover 6 and a box body 9 which are detachably connected, a mounting hole 7 for mounting a waterproof joint and a through hole 10 for penetrating a wire harness 23 are formed in the box body 9, a slot 11 is formed in the bottom of the box cover 6, a protruding portion 13 corresponding to the slot 11 is integrally connected to the top of the box body 9, a sealing ring 12 is arranged between the protruding portion 13 and the box cover 6, a sealing unit corresponding to the through hole 10 is arranged on the outer side of the box body 9, the sealing unit includes two pressing blocks 26 slidably connected with the box body 9, a semicircular groove 28 is formed in each pressing block 26, a soft sealing gasket 25 is sleeved on the wire harness 23, and the two pressing blocks 26 move towards each other to deform the soft sealing gasket 25 and fill up a gap between the wire harness 23 and the semicircular groove.

The utility model discloses when using, at first take off lid 6, then insert the inside of box body 9 from through-hole 10 with the cable to in installing water joint to mounting hole 7, later in the inside connection of accomplishing between the cable of box body 9 or cable and water joint's being connected, install lid 6 afterwards, utilize sealing washer 12 to realize lid 6 and box body 9 sealed, because the size in gap is fixed between lid 6 and the box body 9, so sealing washer 12 can realize fine sealed effect. Then, promote the compact heap 26 and remove, make the cable enter into semi-circular groove 28 to make the flexible seal pad 25 and the inner wall laminating of semi-circular groove 28, along with the continuation removal of compact heap 26, flexible seal pad 25 takes place to warp and enters into in the gap between the cable, through filling up the better sealed effect of realization with the gap, finally, with the rigidity of compact heap 26, can accomplish the installation of cable.

The utility model discloses effectively solved and had the gap and caused the not good problem of sealed effect between the cable to the waterproof performance of junction box has effectively been improved.

Further, box body 9 fixedly connected with base 1, base 1 are through a plurality of fastening bolt and tunnel inner wall fixed connection, offer the fixed orifices 2 that are used for wearing to establish fastening bolt on the base 1.

Further, the connection mode of the box cover 6 and the box body 9 is as follows: the box cover 6 is integrally connected with a connecting part 3 on the periphery, and the connecting part 3 is fixedly connected with the box body 9 through a plurality of connecting bolts 5.

Further, connecting portion 3 an organic whole is connected with connecting sleeve 4, and connecting bolt 5 sets up in connecting sleeve 4, offers the passageway that corresponds with connecting sleeve 4 on the box body 9 to the passageway link up base 1, and connecting bolt 5 utilizes coupling nut 8 locking after stretching into in the passageway.

Further, the specific sliding setting mode of the pressing block 26 is as follows: two dovetail grooves 27 are formed in the outer side of the box body 9, dovetail sliders 22 are arranged in the dovetail grooves 27 in a sliding mode, and the two dovetail sliders 22 are correspondingly connected with the two pressing blocks 26. The dovetail groove 27 is matched with the dovetail slider 22, so that the compression block 26 can slide, and the compression block 26 can be prevented from falling off.

Furthermore, the pressing block 26 is provided with a slide rail 21 which is obliquely arranged, the distance between the two slide rails 21 is gradually reduced in the direction from the inside to the outside of the box body 9, the slide rail 21 is communicated with a through groove 18 which penetrates through the side wall of the pressing block 26, a movable ball 19 is slidably arranged in the slide rail 21, the movable ball 19 is fixedly connected with a connecting rod 20, the connecting rod 20 penetrates out of the through groove 18, the two connecting rods 20 are fixedly connected with a movable plate 17 together, the movable plate 17 is provided with a through hole 24 corresponding to the through hole 10, and the wiring harness 23 penetrates through the through hole 24. When the movable plate 17 is pulled to move away from the box body 9, the movable ball 19 generates extrusion force to the side wall of the slide rail 21 so as to push the pressing block 26, and because the distance between the two slide rails 21 is gradually reduced in the direction from the inside to the outside of the box body 9, the movable ball 19 can push the two pressing blocks 26 to move reversely in the moving process, so that the soft sealing gasket 25 can fill the gap between the cables, which is referred to as a sealing state; on the contrary, when the movable plate 17 is pushed to move toward the direction close to the box 9, the movable ball 19 can push the two pressing blocks 26 to move toward each other, so that the flexible sealing gasket 25 can be prevented from loosening, and the cable can be conveniently detached, which is referred to as a loosening state. By converting the operation of moving the two pressing blocks 26 into the operation of moving the movable plate 17, the complexity of the operation process can be reduced, and the installation efficiency can be improved.

Further, two limiting sleeves 14 are fixedly arranged on the outer side of the box body 9, a permanent magnet 15 is fixedly arranged in the limiting sleeves 14, a movable plate 17 is fixedly connected with two iron guide rods 16, the iron guide rods 16 are parallel to the connecting rod 20, and the two iron guide rods 16 are respectively inserted into the two limiting sleeves 14. When the distance between the two pressing blocks 26 reaches the minimum and the soft sealing gasket 25 fills up the gap between the cables, the iron guide rod 16 is attracted by the permanent magnet 15, so that the position of the movable plate 17 is fixed, and further the position of the pressing blocks 26 is fixed. When the cable needs to be detached, the movable plate 17 is pulled by force to overcome the attraction between the permanent magnet 15 and the iron guide rod 20.

Further, box body 9 is the rectangle, has respectively seted up a through-hole 10 on two lateral walls that extend along the width direction of box body 9, has respectively seted up a mounting hole 7 on two lateral walls that extend along the length direction of box body 9.

Furthermore, the soft sealing gasket 25 can be made of silica gel, and is firstly made into a belt shape and wound on all cables to form the soft sealing gasket 25, so that the cables are not required to be sleeved in advance, and the complexity of the installation process can be effectively reduced when the length of the cables is very long.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a waterproof junction box is used in tunnel, is including lid (6) and box body (9) that can dismantle the connection, offers mounting hole (7) that are used for installing water joint and through-hole (10) that are used for wearing to establish pencil (23) on box body (9), its characterized in that: slot (11) have been seted up to the bottom of lid (6), the top an organic whole of box body (9) is connected with boss (13) corresponding with slot (11), is provided with between boss (13) and lid (6) sealing washer (12), box body (9) outside be provided with the corresponding seal unit of through-hole (10), seal unit include two compact heap (26) with box body (9) sliding connection, seted up semicircle groove (28) on compact heap (26), the cover is equipped with soft sealed pad (25) on pencil (23), and two compact heap (26) move in opposite directions make soft sealed pad (25) compressive deformation and fill up the gap between pencil (23) and semicircle groove (28).

2. The waterproof junction box for tunnels of claim 1, wherein: box body (9) fixedly connected with base (1), base (1) are through a plurality of fastening bolt and tunnel inner wall fixed connection, offer on base (1) and are used for wearing to establish fastening bolt's fixed orifices (2).

3. The waterproof junction box for tunnels of claim 2, wherein: the side of the box cover (6) is integrally connected with a connecting part (3), and the connecting part (3) is fixedly connected with the box body (9) through a plurality of connecting bolts (5).

4. The waterproof junction box for tunnels of claim 3, wherein: connecting portion (3) an organic whole is connected with connecting sleeve (4), connecting bolt (5) set up in connecting sleeve (4), set up the passageway that corresponds with connecting sleeve (4) on box body (9), and the passageway link up base (1), connecting bolt (5) utilize coupling nut (8) locking after stretching into in the passageway.

5. The waterproof junction box for tunnels of claim 1, wherein: two dovetail grooves (27) are formed in the outer side of the box body (9), dovetail sliding blocks (22) are arranged in the dovetail grooves (27) in a sliding mode, and the two dovetail sliding blocks (22) are correspondingly connected with the two pressing blocks (26).

6. The waterproof junction box for tunnels of claim 1, wherein: offer slide (21) that the slope set up on compact heap (26), follow distance between two slides (21) reduces gradually in the inside of box body (9) to outside direction, slide (21) intercommunication has logical groove (18) of lining up compact heap (26) lateral wall, slide (21) inside slip is provided with activity ball (19), activity ball (19) fixedly connected with connecting rod (20), and connecting rod (20) are worn out from leading to groove (18), the common fixedly connected with fly leaf (17) of two connecting rods (20), seted up on fly leaf (17) with corresponding via hole (24) of through-hole (10), pencil (23) are passed from via hole (24).

7. The waterproof junction box for tunnels of claim 6, wherein: the fixed two limiting sleeve (14) that are provided with in the outside of box body (9), fixed permanent magnet (15) that are provided with in limiting sleeve (14), fly leaf (17) two iron guide bars (16) of fixedly connected with, iron guide bar (16) with connecting rod (20) are parallel to each other, and two iron guide bars (16) insert respectively in two limiting sleeve (14).

8. The waterproof junction box for tunnels of claim 1, wherein: box body (9) are the rectangle, have respectively seted up one on two lateral walls that extend along width direction of box body (9) through-hole (10), have respectively seted up one on two lateral walls that extend along length direction of box body (9) mounting hole (7).