CN2180510Y - Aluminium alloy wire clamp with copper clamping edge - Google Patents

Abstract

The utility model relates to a hanging wire clamp used for the contact net of the electrified railroad and hangs a contact wire on a force bearing cable. The utility model comprises a clamp block, screw bolts, screw nuts and an anti-loosing washer, wherein, the clamp block is made of high-strength aluminium alloy; a clamp edge is welded with a copper sheet, a biting edge is provided with a positioning lug, and the position which are contacted with bolt heads are provided with positioning grooves. The utility model solves the problems that when the existing cast-aluminium hanging wire clamp is used in the copper contact wire, the electrochemical corrosion happens, the cast-aluminium strength and the cast-aluminium hanging fastness are influenced because of loose material and inaccurate external dimension, and the use is inconvenient in the process of installation and maintenance. The hanging wire clamp of the utility model has the advantages of easy use, reliable work, low cost, long service life, and light weight.

Description

Aluminium alloy wire clamp with copper clamping edge

The utility model relates to a kind of hanger ear that is used for electrification railway contact net.It can be suspended in the contact wire of electric locomotive on the catenary.

For the part on the electrification railway contact net, desired strength height, in light weight, corrosion resistance and good, and be convenient to aloft work.The shortcoming of existing hanger ear is: 1) it is an aluminum, so that supporting with the contact wire of aluminum; Along with the raising of the electric locomotive speed of a motor vehicle, contact wire progressively changes the copper lead into, so will cause galvanic corrosion between the copper aluminium at present.For preventing corrosion, hanger ear also should change copper into, but the price of copper is expensive, severe is bigger than aluminium, therefore will increase the investment that electrified railway is built by aluminium greatly to the conversion of copper, and contact system is very heavy.2) existing hanger ear includes left and right fixture block 1a and 1b, and is used to connect fixture block and makes seaming A sting tightly, press from both sides mouthful B produce the bolt 2 of gripping power and nut 4, spring washer 3.The seaming face A of left and right sides fixture block is perpendicular to the plane of paper, and fixture block and bolt cap contact position are provided with one can make bolt cap block motionless bayonet socket.Therefore fixture block can be at the direction upper deflecting perpendicular to paper when unclamping nut, and people need it is proofreaied and correct before use, and when last jack panel, people must block bolt cap with instrument.It has increased the work capacity of open-air aloft work and the difficulty of construction.3) existing fixture block is with the cast aluminium manufacturing, and its oad is not really accurate, and internal defect may occur because of material is loose, therefore directly has influence on the reliability and the intensity of hanger ear work, and fixture block ruptures when installation and maintenance sometimes.

The purpose of this utility model provides that a kind of clamping fastness is good, intensity is high, easy to use in light weight, the long service life, installation and maintenance, and when being used for copper contact wire, do not have the aluminum alloy hanger ear of the band copper folder mouthful of galvanic corrosion.

The aluminum alloy hanger ear of the utility model band copper folder mouth includes with the similar left and right fixture block of existing hanger ear, and bolt, nut and safety washer, different is: 1) left and right fixture block has at the seaming place and can make them remain on the location lug of (being not deflection of fixture block) under the running condition all the time; 2) fixture block has in the contact position with bolt cap and can block bolt cap, in case the positioning groove that bolt rotates with nut; 3) fixture block has one deck and the fixture block all-in-one-piece scale copper of combining closely on folder mouthful and surface that copper contact wire contacts; 4) fixture block has adopted the high strength aluminum alloy manufacturing of producing with extrusion process.

To and contrast accompanying drawing by embodiment below, the aluminum alloy hanger ear that the utility model band copper is pressed from both sides mouth is further described below.Have in the accompanying drawing:

Fig. 1 is the positive view of existing hanger ear;

Fig. 2 is the positive view of the utility model hanger ear;

Fig. 3 is the detail drawing of right fixture block 1b among Fig. 2, and wherein (a) is that front view, (b) are right elevations;

Fig. 4 is the block diagram of left fixture block 1a among Fig. 2.

See that from Fig. 2 the utility model hanger ear includes left fixture block 1a, right fixture block 1b, and bolt 2, spring washer 3, nut 4, pad 5.Can be installed with in the enclosed shape mouth under the seaming A of left and right fixture block can make hanger ear suspend suspention line on the catenary in midair (catenary does not give expression in the drawings, the suspention line is represented with long and two-short dash line), the folder mouth B of fixture block below can produce gripping power, clamping contact wire (representing with long and two-short dash line among the figure) when last jack panel 4.

The high strength aluminum alloy manufacturing that fixture block is produced with extrusion process, on Fig. 2, Fig. 3 (a) and Fig. 4, can see that left and right fixture block is the machicolated form steps that are distributed on the left and right fixture block at the location of seaming A lug 6, wherein left fixture block is the then following protruding fovea superior of recessed, the right fixture block of epirelief, and between the fixture block concavo-convex big or small identical, direction is opposite, thereby down closely interlock in working order, mutual restriction is difficult for deflection when nut unclamps, guaranteed that left and right sides fixture block is in state to be used all the time, brought convenience to the user.

Can see on Fig. 2 and Fig. 3 right fixture block 1b the right side with positioning groove 7 are grooves that a width equals the back gauge of bolt cap two opposite side, bolt cap can be blocked in this notch limit, to replace operator's clamping tool, bolt can not be rotated.

Fixture block has the scale copper that a layer thickness is about 0.5mm on the inboard of folder mouthful B and bottom and surface that the contact wire of copper contacts, this copper sheet is to be soldered on the aluminum alloy fixture block with vacuum welding technology.

The advantage of the aluminium alloy hanger ear of the utility model band copper jaws is: 1) on the jaws with after the copper sheet, make fixture block and avoid couple corrosion between the aluminum bronze with inexpensive, the light aluminium manufacturing of amount, its corrosion resistant ability can reach more than 20 years, therefore saved a large amount of copper (every kilometer needs 200 hanger ears at least), reduced electrification railway contact net investment cost, alleviated the weight of contact net. 2) the location lug on the fixture block and locating slot make hanger ear at any time all be in state to be used, have made things convenient for installation, maintenance, and have created condition for work high above the ground personnel one-handed performance. 3) replaced after the existing cast aluminium with the high-strength aluminum alloy of extrusion process production, fixture block compact internal structure zero defect, its intensity can be brought up to more than the 380MPa, and appearance and size is comparatively accurate, therefore guaranteed not have in fixture block non-cracking in the installation and maintenance, the work and come off, it has improved the security of electric locomotive power supply reliability and driving.

Claims (4)

1, a kind of band copper that includes left fixture block (1a), right fixture block (1b) and be used to be connected left and right sides fixture block and can make its seaming (A) sting tightly, press from both sides mouthful bolt (2) of (B) generation gripping power, safety washer (3), nut (4), pad (5) presss from both sides the aluminum alloy hanger ear of mouth, it is characterized in that: the aluminum alloy manufacturing that left and right fixture block is all produced with extrusion process, they are located to have at seaming (A) and can make them remain on location lug (6) under the running condition all the time; With the contact position of bolt cap, have and can block bolt cap, in case the positioning groove that bolt rotates with nut (7); On the fixture block surface that Jia Kou (B) contacts with copper contact wire, have the scale copper (8) that one deck and fixture block closely strike up partnership.

2, the aluminum alloy hanger ear of band copper folder mouth as claimed in claim 1, it is characterized in that: said location lug (6) can be the machicolated form step that is distributed on the left and right fixture block, wherein one is that epirelief is recessed, in addition piece is a protruding fovea superior down, concavo-convex between the two big or small identical, direction is opposite.

3, the aluminum alloy hanger ear of band copper folder mouth as claimed in claim 1, it is characterized in that: said positioning groove (7) can be the groove that a width equals the back gauge of bolt cap two opposite side.

4, as the aluminum alloy hanger ear of claim 1 or 2 or 3 described band copper folder mouths, it is characterized in that: said scale copper (8) can closely strike up partnership itself and fixture block with vacuum welding method.