CN202749764U

CN202749764U - Novel explosion-proof bent threading box

Info

Publication number: CN202749764U
Application number: CN 201220138590
Authority: CN
Inventors: 郑炳文; 单华珍; 辛锐; 孙爱华; 张萍; 张岷; 胡培霞; 张成刚; 胡培军; 李斌
Original assignee: 单华珍
Priority date: 2012-03-27
Filing date: 2012-03-27
Publication date: 2013-02-20
Anticipated expiration: 2022-03-27

Abstract

The utility model discloses a novel explosion-proof bent threading box which comprises a box body, a concentric reducer fastening and sealing member and a positioning folder. The threading box is characterized in that the box body is composed of large-cavity bent semicircular split pipe fittings, two ends of the box body are provided with external thread, a box cover and a box holder are fixed together by screws, screws of the box cover are provided with snapping pieces which prevent the screws from free detachment, the concentric reducer fastening and sealing member is used for sealing the split threading box, changing an inner diameter and strengthening mechanical strength and firmness, the large internal thread of the concentric reducer fastening and sealing member and the external thread are tightened through screwing, the small internal thread of the concentric reducer fastening and sealing member is connected with the external thread of a cable protection tube, and the positioning folder is connected with the box cover and the box holder to function as a positioning pin for preventing displacement. The novel explosion-proof bent threading box provided by the utility model has a simple structure, is quick and convenient to use, enables labor and time to be saved and is applicable to a variety of explosion-proof sites.

Description

A kind of new type explosion proof elbow PULL BOX

Technical field

The utility model belongs to a kind of new type explosion proof elbow PULL BOX, and this PULL BOX is Split type structure, solves electric wire construction of prevention work intensity in explosion-proof area large, the puzzlement that operation is difficult.

Background technology

At present, it is overall structure that explosion-proof area inner cable protection pipeline connects used elbow PULL BOX, required cable all must be passed its inner chamber during construction, cable is rubbed, but self bending stress, the mechanical damage etc. that surpasses himself Bending radius affect, relatively more difficult when making the cable penetration elbow, cause the labour intensity of construction to increase inefficiency.

Summary of the invention

The purpose of this utility model provides a kind of new type explosion proof elbow PULL BOX; can save the operating time of cable penetration PULL BOX, effectively alleviate the crossing construction difficulty of the protected electric wire of anti-explosion area domestic demand, overcome existing equipment defective; improve the threading operating efficiency, reduce production costs.

Technical solutions of the utility model are: new type explosion proof elbow PULL BOX comprises box body, location folding, concentric reducer fit sealing spare; Box body is large inner chamber curved head type, semi-circular Split type structure, and two ends are provided with external screw thread, and lid and cassette holder are fixed together by screw, and the card that prevents that it freely breaks away from is installed on the screw of lid; Concentric reducer fit sealing spare, as the usefulness of split type PULL BOX sealing, change internal diameter, reinforcement mechanical strength and fastness, its large internal thread and external screw thread screw, and little internal thread is connected with the external screw thread of cable protection pipe; The location folding connects lid and cassette holder, works the effect that prevents the alignment pin that is shifted; Angle of bend is 70 °-170 °, all can at 1/2nd to 3/5ths places of box body in a minute body position; The concentric reducer sealing fastener is according to its internal diameter size of need of production conversion.

The utlity model has following useful effect: this device forms box body for dismountable large cavity curved head type, semicircle split-type structural, two ends male element, but large cavity design avoids cable to surpass the damage of self Bending radius, and split-type structural makes things convenient for putting into of cable; Trip bolt is sealed to an integral body with removable cassette; The location folding works the positioning action that prevents removable cassette displacement, and makes things convenient for docking of lid and cassette holder; The large internal thread 6 of concentric reducer fit sealing spare screws with the external screw thread at box body two ends, has strengthened fastness and the mechanical performance of box body; The little internal thread 7 cable protection pipeline external screw thread that spins.The new type explosion proof elbow PULL BOX that closely cooperates and form by above each several part; can directly protected cable be placed in the PULL BOX; avoided the cable protective construction intensity large; the puzzlement that operation is difficult; alleviated the workload of threading construction; increase work efficiency, have obvious economic and social benefit.

Description of drawings

Fig. 1 is the vertical view of the utility model overall structure schematic diagram;

Fig. 2 is the left view of the utility model structural representation box body;

Fig. 3 is the front view of the utility model structural representation box body.

Reference numeral: 1, location folding; 2, screw; 3, external screw thread; 4, concentric reducer sealing fastener; 5, box body; 6, large internal thread; 7, little internal thread; 8, card; 9 lids; 10, cassette holder; 11, large sealing gasket; 12, little sealing gasket.

Embodiment

Below in conjunction with accompanying drawing the utility model is done further detailed description, referring to Fig. 1-Fig. 3, a kind of new type explosion proof elbow PULL BOX comprises box body 5, location folding 1, concentric reducer sealing fastener 4; Described box body 5 is large cavity curved head type, semi-circular Split type structure, two ends external screw thread; Tightened together by screw 2 between split type lid 9 and the cassette holder 10, be equipped with on the screw 2 of lid 9 and prevent from the card 8 that freely breaks away from from preventing from being difficult for looking for or losing after screw 2 freely breaks away from lid 9; Lid 9 is interconnected by location folding 1 with cassette holder 10, plays that folding is fixed and the effect of the alignment pin that prevents from being shifted.Box body 5 two ends external screw threads 3 are connected with the large internal thread 6 of supporting concentric reducer fit sealing spare 4, play sealing, strengthen mechanical strength and the fastness of Split type structure.The spin external screw thread of cable protection pipeline of the little internal thread 7 of concentric reducer fit sealing spare 4.70 °-170 ° of the cambers of elbow (what represent among the figure is 90 °).

During concrete the use, on cable, penetrate two concentric reducer fit sealing spares 4 by correct direction first, follow 4 and penetrate in the lump two large sealing gaskets 11 and two little sealing gaskets 12.Turn on screw 2, open the lid 9, put into cable, take after the seal approach lid 9 to be buckled on the cassette holder 10, tighten the assembling that screw 2 is finished box body 5.The large internal thread 6 of concentric reducer fit sealing spare 4 is put into behind the large sealing gasket 11 and box body 5 two ends external screw threads 3 are tightened; putting into little sealing gasket 12 in the little internal thread 7 connects with the protection pipe fitting external thread rotary that should be connected; finish PULL BOX and dock construction with pipeline, efficient and convenient, time saving and energy saving.

Claims

1. new type explosion proof elbow PULL BOX, its feature comprises box body (5), concentric reducer fit sealing spare (4), location folding (1); Box body (5) is large inner chamber curved head type, semi-circular Split type structure, two ends are provided with external screw thread (3), lid (9) is fixed together by screw (2) with cassette holder (10), is equipped with on the screw (2) of lid (9) and prevents its card that freely breaks away from (8); Concentric reducer fit sealing spare (4), usefulness as split type PULL BOX sealing, change internal diameter, reinforcement mechanical strength and fastness, its large internal thread (6) screws with external screw thread (3), and little internal thread (7) is connected with the external screw thread of cable protection pipe; Location folding (1) connects lid (9) and cassette holder (10), works the effect that prevents the alignment pin that is shifted; Angle of bend is 70 °-170 °, all can at 1/2nd to 3/5ths places of box body (5) in a minute body position.