CN2129050Y

CN2129050Y - Sealed type substation box

Info

Publication number: CN2129050Y
Application number: CN 92209239
Authority: CN
Inventors: 吴中树; 吴中彦
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-05-14
Filing date: 1992-05-14
Publication date: 1993-03-31
Anticipated expiration: 2002-05-14

Abstract

The utility model relates to a dismounting machine for the hot-water pump cover of a steam locomotive, which is a special tool for repairing the steam locomotive, and is composed of an electric oil pump, an oil cylinder, a switching valve and a pulling and teasing device which is composed of a trivalvular screw rod, an expanding valve and taper pin nuts; the trivalve screw rod is processed with three uniformly distributed fan-shaped convex bodies on the screw rod; the expanding valve is a trivalve separate type; a fan-shaped gap is arranged between the valves; the screw rod can pass through the gap between the valves; after the expanding valve is expanded by the taper pin nuts, the boss of the front end of the expanding valve is hooked on the edge of the pump cover; the screw rod is arranged on a piston which moves to drive the screw rod to detach the pump cover; the dismounting machine for the hot-water pump cover of a steam locomotive has the advantages of simple structure, convenient operation, and has the advantage that the labor intensity of the worker is abated.

Description

Sealed type substation box

The utility model relates to a kind of junction box of telephone communication circuit, particularly closed junction box.

In known telephone communication circuit, the transmission cable that telephone exchange sets up is provided and delivered to all users by junction box.Common structure is common boxlike, enters in the box in order to prevent to drench with rain, and then telephone exchange's cable all is connected by the box downside with user's lead-out wire; The installation of box is earlier plank to be fixed on the online bar with the U-shaped stud, refills box on the plate.So tangible weak point is that the utilization of each junction box will cause about 1 meter long cable waste; Loading and unloading inconvenience and labour intensity are big.

The purpose of this utility model is the weak point that will overcome known technology, and a kind of improved closed junction box is provided.

The purpose of this utility model is achieved in that

The box body that the box mouth is shaped on outward flanging is connected with the lid formation drawer type that is shaped on to in-flanges dustpan formula, is adorning the baffle plate that has wire hole energy shutoff box chamber on the flange of box body.Box side wall is equipped with and can seals inlet wire Seal of Cables mechanism.

It can be that the single flange of box body and the double-turnup of lid constitute that drawer type connects; Also can be that the double-turnup of box body and single flange of lid constitute.

Said connection can be that single flange and double-turnup directly constitute; Also can be between double-turnup, to stud with sealing strip to constitute with single flange again.

Sealing mechanism can be that the short tube that is shaped on conical bore and internal screw end is housed in the box body cinclides, overlapping cable in it sealing ring that profile and conical bore match is being housed, press-fit an outer silk braid on the ring, put the close circle of putting of O shape is housed, connect silk braid and compressing sealing ring with cover cap.

Sealing mechanism also can be in the box body cinclides, be equipped with have in the short tube held of ladder circle and outer silk, overlapping cable on the ladder circle software sealing ring of section for circular, square or other similar shape is being housed, the bowl-type pressure ring is housed on the circle, connects short tube and compressing pressure ring and sealing ring with locknut.

Sealing mechanism can also be that a seat tubulature internal diameter is slightly larger than the box wall aperture and is shaped on the short tube of outer silk end outside the box body cinclides, is overlapping cable in the pipe software sealing shroud is housed, and connects short tube and oppresses sealing shroud with the locknut that has internal projecting ring.

The box body back also is shaped on directly or is stained with the cambered surface frame that rubber slab contacts with the line bar, and the adjustable clip that passes the cambered surface frame is fixed on the online bar.

Clip is made two semicircular ring, and one of them opening connects so that screw is secondary, and the connection of another opening can be that a semicircular ring circumferentially is shaped on 2-5 T shape hole, and another semicircular ring is shaped on the curved T shape termination of equal difference, inserts an aforesaid hole snapping; Also can be circumferentially to be shaped on 2-6 vertical cylindrical void in a semicircular ring, another semicircular ring be shaped on 1 or 2 protruding hook that matches with cylindrical void, with said 1 or 2 cylindrical void clasp joint.

Advantage of the present utility model: at temperature-40 ℃～40 ℃, hydraulic pressure 3～5kg/cm ²Condition under test, cable seal does not have leakage, anti-rain is effectively selected the different model of this box according to need for use, can exempt the waste cable; Easy accessibility is laborsaving, and is safe and reliable, aesthetic in appearance generous.

Description of drawings:

Fig. 1 is the end view of closed junction box;

Fig. 2 is the front view of the another kind of sealing mechanism of this device;

Fig. 3 is the front view of another sealing mechanism of this device.

Below in conjunction with details and the working condition of Fig. 1～3 detailed descriptions according to the concrete device that the utility model proposes.

This box comprises the box body of casting with aluminium alloy 1, the box mouth is shaped on outside single flange, or the not shown double-turnup that parallels, in the upside of box body or the correct position of both sides, can directly introduce the optimum position of telephone exchange's cable, be shaped on cinclides as 2 places among the figure.Make lid 3 with sheet metal, the lid mouth is shaped on inside dustpan formula double-turnup (containing upside list flange), or not shown single flange, connects with the corresponding formation of the flange drawer type of box body box mouth.This connection can be directly to constitute between flange, can also be intended to improve sealing bottom between double-turnup in the box and stud with the sealing strip that material such as felt makes and constitute with single flange.Fixing is bent into sheet metal on the following flange of box body, and profile and lid inboard match promptly to realize the plate washer 4 in shutoff box chamber, are shaped on the wire hole that confession user lead-out wire is used on the plate.The terminal block 5(that box body internal fixation piece is made with insulating material contains connectors such as binding post, nut).The back of box body is cast with hollow cambered surface frame 6, and cambered surface is made the different model arc that matches with all size line bar, directly or be stained with rubber sheet in cambered surface and contact with the line bar, passes the cambered surface frame and with adjustable clip 7 this box is fixed on the online bar.Clip is to curve two semicircular ring with the strip steel, one of them opening discount drilling connects with bolt is secondary, the connection of another opening perhaps is that a semicircular ring is circumferentially made 2～5 T shape holes, and another semicircular ring is shaped on the curved T shape termination of equal difference, selects to insert an aforesaid hole snapping; Perhaps be that a semicircular ring circumferentially is shaped on 2～6 vertical cylindrical voids, and another semicircular ring is shaped on 1 or 2 protruding hook that matches with cylindrical void, selects and said 1 or 2 cylindrical void clasp joint.

Can seal inlet wire Seal of Cables mechanism has multiple different embodiments, only has the following explanation of doing of typicalness.

According to shown in Figure 1, the individual short tube 8 that is shaped on conical bore (or internal projecting ring) and internal thread end of sealing and fixing in the cinclides at box body 2 places.Overlapping cable 9 in it sealing ring 10 that profile and conical bore match and make with terne metal is being housed.A dress outer silk braid 11 on the ring, its whole system center hole, an end are that the column sleeve shape other end is for the hexagon of screwing usefulness, the outer silk of stage casing system.Put and be with O-ring seals, use cover cap 12 with the screwed connection silk braid.With cable end suit cover cap, O-ring seals, silk braid, sealing ring successively, inject short tube and adjust correct position.Screw silk braid and make it to be connected with short tube and to oppress sealing ring deformation, screw cover cap again and make it to be connected with silk braid and to oppress the O-ring seals distortion, said two distortion promptly realize twice sealing to cable end.

According to shown in Figure 2, in the cinclides internal fixation at box body 2 places is shaped on ladder circle (or internal projecting ring) and outside the short tube 13 of an end.Overlapping cable 9 on the ladder circle software sealing ring 14 with soft materials such as rubber, plastic cement made of section for circular, square or other similar shape is being housed.Dress is inverted bowl-type metal crimp ring 15 on the circle, uses locknut 16 with the screwed connection short tube.With cable end suit locknut successively, pressure ring and software sealing ring, inject short tube.Screw locknut compressing pressure ring and oppress sealing ring distortion, realize Seal of Cables by its.

According to shown in Figure 3, in the cinclides of box body outside a seat dress bore be slightly larger than the box wall aperture and be shaped on outside the short tube 17 of an end.Suit the software sealing shroud 18 that cable is equipped with column sleeve shape in the pipe, and is supported on the box wall.With being shaped on locknut 19 to internal projecting ring with the screwed connection short tube.With cable end suit locknut 19 and sealing shroud successively, inject short tube.Screw locknut with its bulge loop compressing sealing shroud distortion, realize Seal of Cables.

Working condition is the clip of selected suitable girth,, cable end is injected sealing mechanism implement aforesaid sealing on the fixing online bar of this device with it, and all leads are loaded on terminal block one side respectively in the cable.Terminal block and box body are fixed.The wire hole that user's electric wire is passed plate washer is loaded on another survey of terminal block respectively, plug-in mounting lid from top to bottom after fulfiling assignment.

Claims

1, a kind of closed junction box, form by box body, lid, terminal block etc., it is characterized in that box body that the box mouth is shaped on outward flanging and be shaped on lid to in-flanges (dustpan formula) and constitute drawer type and is connected, adorning the plate washer that has wire hole energy shutoff box chamber on the flange of box body; Box side wall is equipped with and can seals inlet wire Seal of Cables mechanism.

2, junction box according to claim 1 is characterized in that it can be that the single flange of box body and the double-turnup of lid constitute that said drawer type connects; Also can be that the double-turnup of box body and single flange of lid constitute.

3, junction box according to claim 1 and 2 is characterized in that said connection can be that single flange and double-turnup directly constitute; Also can be between double-turnup, to stud with sealing strip to constitute with single flange again.

4, junction box according to claim 1, it is characterized in that sealing mechanism can be that the short tube that is shaped on conical bore and internal screw end is housed in the box body cinclides, overlapping cable in it sealing ring that profile and conical bore match is being housed, press-fit an outer silk braid on the ring, put and be with O-ring seals, connect silk braid and compressing sealing ring with cover cap.

5, according to the said junction box of claim 1, it is characterized in that sealing mechanism also can be ladder circle and outer short tube of holding in dress has in the box body cinclides, overlapping cable on the ladder circle software sealing ring of section for circular, square or other similar shape is being housed, the bowl-type pressure ring is housed on the circle, connects short tube and compressing pressure ring and sealing ring with locknut.

6, junction box according to claim 1, it is characterized in that sealing mechanism can also be that a seat tubulature internal diameter is slightly larger than the box wall aperture and is shaped on the short tube that outer silk is held outside the box body cinclides, overlapping cable in the pipe software sealing shroud is being housed, connecting short tube and compressing sealing shroud with the locknut that has internal projecting ring.

7, junction box according to claim 1 is characterized in that the box body back is shaped on directly or is stained with the cambered surface frame that rubber slab contacts with the line bar, and the adjustable clip that passes the cambered surface frame is fixed on the online bar.

8, according to claim 1 or 7 described junction boxs, it is characterized in that clip makes two semicircular ring, one of them opening connects so that screw is secondary, the connection of another opening, can be circumferentially to be shaped on 2～5 T shape holes in a semicircular ring, another semicircular ring is shaped on the curved T shape termination of equal difference, inserts an aforesaid hole snapping; Also can be circumferentially to be shaped on 2～6 vertical cylindrical voids in a semicircular ring, another semicircular ring be shaped on 1 or 2 protruding hook that matches with cylindrical void, with said 1 or 2 cylindrical void clasp joint.