CN202575706U

CN202575706U - Clamp forceps for steel billet hoisting

Info

Publication number: CN202575706U
Application number: CN 201220176138
Authority: CN
Inventors: 吴迪; 王继伟; 胡德明; 胡德安; 虎雨涝
Original assignee: Bengang Steel Plates Co Ltd
Current assignee: Bengang Steel Plates Co Ltd
Priority date: 2012-04-24
Filing date: 2012-04-24
Publication date: 2012-12-05
Anticipated expiration: 2022-04-24

Abstract

The utility model relates to a pair of clamp forceps for steel billet hoisting. The clamp forceps comprise two corresponding forceps arms which are limited by a pivot, the lower ends of the two forceps arms are respectively provided with rotary shafts which are perpendicular to the forceps arms and limited by sliding bearings, and forceps teeth are arranged inside the rotary shafts. The ladder-shaped forceps teeth adopted for the clamp forceps can enlarge contact areas between the clamp forceps and steel billets or steel ingots. In addition, the rotary shafts are adopted to be arranged inside the sliding bears on the forceps arms, relative movement between the forceps teeth and the forceps arms is achieved, center of gravity of a clamped piece is adjusted to enable clamping force on the steel billets or the steel ingots to be reduced through the method of rotating, and clamp marks on the surface of the steel materials are lightened.

Description

Be used to lift the clamp of steel billet

Technical field

The utility model relates to a kind of clamp that is used to lift steel billet.

Background technology

Mill need utilize clamp on the hoisting crane that steel ingot or steel billet are sling through the mode of clamping and pack in the soaker when roll plate.When steel ingot or steel billet are heated to predetermined temperature, with clamp it is hung out stove again, think that mill supplies raw materials.Two tong arms about clamp of the prior art comprises are inlaid with a circular cone clamp respectively in each tong arm opposed inside.Because taper pincers tooth and ingot blank surface area of contact are little; And the quality of steel ingot and steel billet is bigger, and when changing into hot steel ingot of austenic or steel billet with its clamping, clamp must apply very big Clamping force to steel ingot and steel billet and could it be sling; When this kind Clamping force acts on hot steel ingot or the steel billet; Produce relative motion because of taper pincers tooth makes between circular cone clamp tooth and the ingot blank surface with the little meeting of ingot blank surface area of contact, this sport causes ingot blank or two surface fractures of steel ingot that are held, and certificate lifts on-site measurement; Its damaged position can produce the awl hole of dark about 30mm, the about 50mm of surperficial cylindrical; After through mill it being rolled into roundwood, wherein some roundwood surface can form centerline crack, and what produce is the waste product steel.

Chinese patent 2926168Y number disclosed name is called " a kind of improved jaw type hoisting crane clamp " and provides a solution.This clamp forms a pincers midleg corner in two pincers of clamp leg from top to bottom forked and constitutes two pincers legs on the basis of conventional hoist clamp, and two pincers legs and another pincers leg are still cross-shaped.Its meaning is the catcher mark that the mode that utilize to increase itself and steel area of contact reduces steel surface; But because additional two pincers legs can increase the cost of manufacture of clamp on the one hand; And it is complicated that the structure that makes clamp becomes; On the other hand, because of a pincers application force that leg bore is also bigger, can reduce its service life after it is impaired.

Summary of the invention

The purpose of the utility model provides the clamp that is used to lift steel billet that a kind of mode of utilizing direct increase and steel billet or steel ingot area of contact solves the steel damaging problem.

The clamp that the utility model proposed is used to lift steel billet comprises two corresponding tong arms that limited on pivot; Said two tong arm lower ends are separately installed with the S. A. that plain bearing limited perpendicular with tong arm, at the inner end of S. A. the pincers tooth are installed.

Said pincers tooth is embedded in the S. A. inner end, and the pincers tooth adopts stepped tooth.

The clamp that the utility model proposed is used to lift steel billet adopts the youngloop bending pliers tooth can increase and the area of contact of steel billet or steel ingot; And adopt S. A. to put in the plain bearing on the tong arm, realize the pincers tooth can with tong arm generation relative motion, be held the center of gravity of part with adjustment; Make it reduce steel billet or the suffered Clamping force of steel ingot through the mode of rotating; So this clamp can alleviate the catcher mark of steel surface, make its surface be difficult for cracking; Can improve the quality of steel and 8.46% lumber recovery, year increase benefit is more than 1,000,000 yuan.

Description of drawings

Accompanying drawing 1 is the outward appearance cut-away section structural representation that lifts the utility model being used to of proposing an embodiment of clamp of steel billet;

Accompanying drawing 2 is cross-sectional view of a tong arm bottom among the figure.

The specific embodiment

Referring to Fig. 1 and Fig. 2, these two accompanying drawings provide that the utility model proposes is used to lift the surface structure of an embodiment of clamp of steel billet.This clamp comprises two tong arms 1, S. A. 2, pincers tooth 3 and plain bearing 4.Wherein, the lower area of tong arm 1 is provided with a through hole perpendicular to tong arm, and the S. A. 2 that plain bearing 4 is installed in through hole and is limited on plain bearing 4 is equipped with pincers tooth 3 at the inner end of S. A. 2.The inner end of S. A. 2 is provided with the locating part 5 of diameter greater than S. A. 2, and pincers tooth 3 radially is installed on the locating part 5 through bolt 6, and pincers tooth 3 also can be embedded on the locating part 5.Pincers tooth 3 adopts stepped tooths, and stepped tooth be provided with a plurality of, with increase with the area of contact of steel billet or steel ingot.

Claims

1. be used to lift the clamp of steel billet; This clamp comprises two corresponding tong arms that limited on pivot; It is characterized in that: said two tong arm lower ends are separately installed with the S. A. that plain bearing limited perpendicular with tong arm, at the inner end of S. A. the pincers tooth are installed.

2. clamp according to claim 1 is characterized in that: said pincers tooth is embedded in the S. A. inner end, and the pincers tooth adopts stepped tooth.