CN101436766A

CN101436766A - Device for locking busway inserting case

Info

Publication number: CN101436766A
Application number: CNA2008102445752A
Authority: CN
Inventors: 蒋文功; 常小勇
Original assignee: JIANGSU WETOWN ELECTRICITY SET CO Ltd
Current assignee: JIANGSU WETOWN ELECTRICITY SET CO Ltd
Priority date: 2008-12-11
Filing date: 2008-12-11
Publication date: 2009-05-20

Abstract

The invention relates to a transmission equipment accessory, in particular to a bus duct jack box locking device for fixing a bus duct tap-off box on a transmission bus duct case. The locking device comprises clamping boards arranged on a shell of a jack box through rotating shafts. Lower ends of the clamping boards are provided with hooks which can hook a protruding part at the edge of the bus duct case. Upper ends of the clamping boards are provided with arc-shaped guide grooves taking the rotating shafts as circle centers. End parts of the inner sides of the arc-shaped guide grooves are provided with positioning holes with the diameter greater than the width of the arc-shaped guide grooves. The shell of the jack box is provided with threaded holes in which bolts are screwed. Front parts of the bolts are inserted through the arc-shaped guide grooves to be screwed into the threaded holes. Rod parts of the bolts consist of threaded sections and step positioning sections. The diameter of the threaded sections is smaller than the width of the arc-shaped guide grooves. The diameter of the step positioning sections is larger than the width of the arc-shaped guide grooves and smaller than the diameter of the positioning holes. The transmission equipment accessory can realize connection and fixing of the jack box and the bus duck and is flexible in installation position, simple in structure, convenient and simple in operation and fixed in connection.

Description

Device for locking busway inserting case

Technical field

The present invention relates to transmission equipment accessory, specifically is a kind of being used for busway inserting case to be fixed on device for locking busway inserting case on the power transmission busbar housing.

Background technology

Jack box plays a part to distribute electric energy as a functional unit of power transmission busbar in bus duct system.Jack box on bus duct mounting means a lot, after jack box is inserted on the bus duct, guarantee that jack box can reliably be connected with bus duct, fixing will seem most important, this will be directly connected to the operation that can jack box reliably and with long-term.At present, the mode that generally adopts holder and bolt to be connected is connected the jack box housing with the bus housing, and this just need be provided with attachable fixing point on bus groove case and jack box housing, and its work progress is loaded down with trivial details, and not attractive in appearance.

Summary of the invention

Technical problem to be solved by this invention is, a kind of simple in structure, manufacturing and bus jack box locking device easy for installation, that be connected firmly are provided.

Device for locking busway inserting case of the present invention includes at least one and is installed in clamp on the jack box housing, and the middle part of clamp is installed on the jack box housing by rotating shaft; The hook of bending in the lower end of clamp has, when jack box was plugged on the bus duct, the hook on the clamp can be hooked on the ledge at bus groove case edge; It is the arc guide barrel in the center of circle with the rotating shaft that the upper end of clamp has one section, and the medial end of arc guide barrel has the location hole of a diameter greater than the arc guide barrel width; On the jack box housing, be provided with screwed hole with corresponding position, arc guide barrel position, be rotary with a screw that cooperates with it in the screwed hole, the screw leading portion passes arc guide barrel and screws in the screwed hole; The bar portion of described screw is made up of the thread segment of leading portion and the step positioning section of root, and the diameter of thread segment is less than the arc guide barrel width, the diameter of step positioning section greater than the arc guide barrel width less than the location hole diameter.Described clamp can be arranged in pairs in the both sides of jack box housing, and it cooperates with the ledge of bus groove case both sides respectively.

The present invention realizes being connected and fixed of jack box and bus duct by the clamp that is arranged on the jack box housing with cooperating of bus housing ledge, need not on bus groove case, to be provided with and be fixedly coupled a little, improved the flexibility of installation site, and its simple in structure, easy and simple to handle, firm and reliable connection.

Description of drawings

Fig. 1 is the jack box of the embodiment of the invention and the perspective view of bus duct connection status;

Fig. 2 be clamp not with the structural representation of bus groove case locking state;

Fig. 3 is the structural representation of clamp and bus groove case locking state;

Fig. 4 is the structure for amplifying schematic diagram of a pair of clamp upper end;

Fig. 5 be screw structural representation.

Embodiment

As shown in Figure 1, comprise a pair of clamp 2 that is installed on the jack box housing 1 among this locking device embodiment, clamp can rotate around the rotating shaft 3 at its middle part, and the hook 21 of clamp lower end can hook the ledge 41 (the flange place of bus groove case) at bus groove case 4 edges under locking state.As shown in Figure 4, the clamp upper end is provided with one section arc guide barrel 22, and the arc guide barrel medial extremity has the location hole 23 of a diameter greater than the guide groove width.Each clamp all has a supporting with it screw 5, and the leading portion of screw passes guide groove 22 and screws in the screwed hole 11 on the jack box housings.As shown in Figure 5, screw 5 bar portion form by the thread segment 51 of leading portion and the step positioning section 52 of root.

Before the jack box housing is not locked with bus groove case, as shown in Figure 2, the hook of clamp lower end is positioned at ledge 41 outsides of bus groove case, the thread segment 51 of screw 5 leading portions is arranged in the guide groove 22 on the clamp 2 at this moment, because the big therefore screw of step positioning section 52 diameters of screw root can't continue screw-in;

When jack box housing and bus groove case locking, as shown in Figure 3, clamp 2 is rotated around the rotating shaft 3 at its middle part, hook 21 is blocked the ledge 41 at bus groove case edge, this moment screw 5 leading portions along guide groove 22 slide relative to location hole 23, at this moment screw 5 can be continued to screw in, its step positioning section 52 is entered in the location hole 23, clamp just can't be again to back rotation like this, thereby has realized the locking of jack box housing and bus groove case.

Claims

1, a kind of device for locking busway inserting case is characterized in that: it includes at least one and is installed in clamp (2) on the jack box housing (1), and the middle part of clamp is installed on the jack box housing by rotating shaft (3); The hook of bending in the lower end of clamp has (21), when jack box was plugged on the bus duct, the hook on the clamp (21) can be hooked on the ledge (41) at bus groove case (4) edge; It is the arc guide barrel (22) in the center of circle with rotating shaft (3) that the upper end of clamp (2) has one section, and the medial end of arc guide barrel has the location hole (23) of a diameter greater than the arc guide barrel width; On the jack box housing, be provided with screwed hole (11) with corresponding position, arc guide barrel position, be rotary with a screw (5) that cooperates with it in the screwed hole, the screw leading portion passes arc guide barrel and screws in the screwed hole (11); The bar portion of screw (5) is made up of the thread segment (51) of leading portion and the step positioning section (52) of root, the diameter of thread segment (51) is less than arc guide barrel (22) width, the diameter of step positioning section (52) greater than arc guide barrel (22) width less than location hole (23) diameter.

2, device for locking busway inserting case according to claim 1 is characterized in that: clamp (2) is arranged in pairs in the both sides of jack box housing (1), and it cooperates with the ledge (41) of bus groove case (4) both sides respectively.