CN2098986U

CN2098986U - Earthing connection

Info

Publication number: CN2098986U
Application number: CN 91216994
Authority: CN
Inventors: 和存公; 和存立; 关梦月
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-06-25
Filing date: 1991-06-25
Publication date: 1992-03-18

Abstract

The utility model relates to a welding earthing connection clamp, which is a small-size implement in welding procedure and is used for connecting a welding earthing cable and a welded work piece. The welding earthing connection clamp is composed of a lower fixed clamp mouth, a lower fixed handle, an upper movable handle, a ratchet stop mechanism, an upper movable clamp mouth, a movable screw bolt connected to the front part of the upper movable clamp mouth, movable gear teeth hinged and connected to the lower part of the movable screw bolt, etc. The clamp not only can clamp board materials and profile materials of arbitrary thickness, but also can clamp pipe materials of small-caliber. The utility model has firm and reliable clamping, favorable conducting performance, convenient operation, labor saving, low cost, and easy processing and fabrication.

Description

Earthing connection

The utility model belongs to mechanical engineering field.Specifically, it relates to a kind of anchor clamps in the welding procedure, is used to connect welding ground cable and welded piece.Can be widely used in the welding procedure.

The clamp that in the past was used to connect welding ground cable and welded piece in welding procedure has following several:

1, with soldering turret wire clamp pincers instead

Soldering turret originally is the anchor clamps that are designed for the clamping welding rod, therefore its jaw expansible distance is very little, can clamping welded piece thickness very limited, and jaw is dihedral and opens, being difficult to assurance face between jaw and the welded piece contacts, under the very big situation of welding current, be difficult to guarantee excellent conducting performance.

2, spring earthing clip

This clip two jaws all are made of copper, a compression of clip rear portion band spring.This clip does not have leverage, by pressing spring jaw is opened by staff, and the operation effort is very little to the chucking power of welded piece, clamps not strongly admittedly, is easy to come off; This clamp is wasted copper material in addition.

3, welding ground clamp, (utility model patent, application number 91200042,2)

This is the solid and reliable clamp of a kind of clamping, but connects welding cable on its handle, so its handle, when especially being with nigger, seems very clumsy; Jaw and handle one, cross-shaped structure, so cross section is very wide, very inharmonious; Again because the chi structure of jaw is restricted the distance of opening of jaw, can't the thicker workpiece of clamping, more can not clamping tubing; Pointed ratchet exposes, and is easy to hurt sb.'s feelings.

In view of the problem that exists in the prior art, a kind of welding ground clamp of new structure is proposed.Its objective is that not only to want clamping solid and reliable, electric conductivity is good, and adaptability is stronger, but both clamping thin plates, but clamping slab again; But not only clamping sheet material, section bar, but and the clamping minor caliber pipe; Guarantee that all jaw contacts with the sheet material face during to the sheet material clamping of any thickness; The ratchet shut-down mechanism does not expose, and profile is small and exquisite attractive in appearance.

For reaching this purpose, designed clamp is made up of following several parts:

Make with the copper material separately, the rear portion that is exclusively used in this jaw rear portion of fixedly lower jaw (1) of connecting the welding ground cable and following fixedly lower handle (2) separates, and exposes outside.Rearward end have line cable insertedly blind hole, be fixed on the fixing lower handle (2) of steel on the fixing lower jaw (1) with rivet; The ratchet (3) that can rotate around fixing lower handle (2) middle part fixed bias circuit; Can be the movable upper handle (4) that fulcrum rotates with ratchet (3) top movable axle; Is connected with movable upper handle (4) strand and can be around the fixing movable upper jaw (5) of lower handle (2) front upper fixed axis rotation; Vertical direction is connected the movable bolt (6) of anterior the regulated extension elongation of movable upper jaw (5) by bolt; Bending can be gone up in the front portion of wherein movable upper jaw (5), to add the distance between the mouth of tongs, by regulating the extension elongation of movable bolt, adapts to the welded piece of clamping different-thickness.Strand is connected the bottom of movable bolt (6), can be around twisting the activity teeth (7) that connecting axle rotates within the specific limits, no matter holding workpiece thickness is much, the jaw opening angle is much, by these activity teeth (7), can guarantee forever to contact with the welded piece face.These activity teeth (7) have the garden cylindrical internal surface, when the clamping minor caliber pipe, the activity teeth are rotated 90 get final product; Can be connected fixedly lower jaw (1) front upper by dovetail groove when needed, aim at the clamping minor caliber pipe and additional jaw (8) with garden cylindrical internal surface; And can rotate around movable upper handle (4) middle part fixed bias circuit, aim at and cooperate with ratchet and form the ratchet (9) of ratchet shut-down mechanism: be connected in the spring (10) between ratchet (9) and movable upper handle (4) the rear portion rivet: be connected in ratchet (3) bottom and the fixing spring (11) between the anterior rivet of lower handle (2).Wherein fixedly lower handle (2), movable upper handle (4) are all synthetic by two sheet metals.Intermediate course is fixing lower jaw (1), movable upper jaw (5), ratchet shut-down mechanism (3), (10) etc.Use rivet between two steel plates, necessary place shimming.

This clamp is characterised in that: the welding ground cable does not connect by the handle of clamp, separately the rear portion is exposed and have separately, be exclusively used in the fixedly lower jaw (1) that connects the welding ground cable, other of this clamp are characterised in that: by movable upper handle (4), movable upper jaw (5) and the top of ratchet (3) and fixedly the turning cylinder fulcrum of the front upper of lower handle (2) constitute the two-stage lever force mechanism; Other features of this clamp also are: the movable bolt (6) that can regulate extension elongation by being threaded in the anterior vertical direction of movable upper jaw (5); Other features of this clamp also are: connect activity teeth in movable bolt (6) bottom by strand, other features of this clamp also are to be connected the fixedly ratchet (3) at lower handle (2) middle part and ratchet (9) the formation ratchet shut-down mechanism that strand is connected movable upper handle (4) middle part by strand.

In conjunction with the accompanying drawings, it is as follows to narrate an embodiment of the present utility model:

Fixedly lower jaw (1) is cast with red copper, and its front portion is a cuboid, and the exposed part in rear portion is a Cylinder.There is vertical blind hole of φ 15 * 30 at the cylinder rear portion, and insertion welding ground cable, cable compress by horizontal screw in the hole.Fixedly lower handle (2) and movable upper handle (4) are with thick 2 steel plate punch formings.The strand connecting axle of movable upper jaw (5) and movable upper handle (4) is positioned at the top of two balance pivot lines, to adapt to the requirement of ratchet shut-down mechanism.

At the thickness of this batch welded piece, movable bolt (6) is adjusted on the roughly suitable position.Welded piece places fixedly between the lower jaw (1) and activity teeth (7).Press movable upper handle (4), pressurization clamps to workpiece by leverage.The ratchet shut-down mechanism is spacing to movable upper handle (4) simultaneously, makes it and can not freely flick, and when ratchet (9) end arrived ratchet (3) teeth extreme position, activity teeth (7) produced strain, and the workpiece clamping force is reached to greatest extent.After this just can begin welding.

After welding finishes, continue to press movable upper handle (4) downwards, make ratchet (9) end skid off the limit teeth of ratchet (3), extension spring (10) shrinks, and makes the end of ratchet (9) change direction, and the ratchet shut-down mechanism loses limit function.Extension spring (11) shrinks, and makes ratchet (3), and ratchet (9) resets, and affects movable upper handle (4) to flick simultaneously, and jaw opens naturally, just can take off clamp.

Use these pincers easy to operate, clamping is solid and reliable, and electric conductivity is good.Can guarantee the smooth implementation of welding procedure, increase work efficiency.This clamp applicability is wide.

Claims

1, a kind of welding ground clamp comprises: fixedly lower jaw (1), fixedly lower handle (2), movable upper handle (4), movable upper jaw (5), ratchet (3), ratchet (9), movable bolt (6), activity teeth (7), it is characterized in that: the welding ground cable does not connect by the handle of clamp, clamp has separately separately, the rear portion is exposed, has the fixedly lower jaw (1) of welding ground cable jack.

2, by the described welding ground clamp of claim 1, it is characterized in that: by movable upper handle (4), the movable upper jaw (5) that is connected with its strand and ratchet (3) top and fixedly the turning cylinder fulcrum of lower handle (2) front upper constitute the two-stage lever force mechanism.

3, by the described welding ground clamp of claim 1, it is characterized in that: the front portion in movable upper jaw (5), the movable bolt (6) that vertical direction can be regulated extension elongation by being threaded.

4, by the described welding ground clamp of claim 1, it is characterized in that: the bottom in movable bolt (6) connects activity teeth (7) by strand.

5, by the described welding ground clamp of claim 1, it is characterized in that:, can connect an additional jaw (8) by dovetail groove with garden cylindrical internal surface in the fixing front portion of lower jaw (1).

6, by the described welding ground clamp of claim 1, it is characterized in that: be connected the fixedly ratchet (3) at lower handle (2) middle part and ratchet (9) the formation ratchet shut-down mechanism that strand is connected movable upper handle (4) middle part by strand.