CN2204212Y

CN2204212Y - Pendulous flying shear

Info

Publication number: CN2204212Y
Application number: CN 94246357
Authority: CN
Inventors: 綦书阡; 费珉; 陶金明; 张如斌
Original assignee: Beijing Inst Of Metallurgical Equipment Ministry Of Metallurgical Industry (cn
Current assignee: Beijing Inst Of Metallurgical Equipment Ministry Of Metallurgical Industry (cn
Priority date: 1994-11-18
Filing date: 1994-11-18
Publication date: 1995-08-02
Anticipated expiration: 2004-11-18

Abstract

The utility model relates to a pendulous flying shearing device; a fly wheel is driven by an alternating current motor; the fly wheel is connected with a worm gear and a worm screw by a pneumatic clutch; the worm screw is a worm screw with a secondary enveloping ring surface; the worm gear rotates and drives a double-eccentricity shaft to rotate; a draw rod of an upper cutting edge and a draw rod of a lower cuttingedge are respectively arranged on the double-eccentricity shaft; the upper cutting edge and the lower cutting edge move correspondingly to realize shearing. The utility model has the advantages of high transmission efficiency, powerful bearing capacity and improvement of shear force.

Description

Pendulous flying shear

The utility model belongs to a kind of pendulum-type shearing machine, particularly pendulum-type shearing machine more than 300 tons.

Present existing rocking fly shears as 300 tons of flying shears of De Make, adopts the Niemann worm screw, shearing 150 * 150mm, when temperature was lower than 800 ℃ little square billets, shearing force can only reach about 270 tons, drive mechanism is unreasonable, uses will change the gear direction in about 3 years, and it is quite serious to wear and tear.

The purpose of this utility model is to solve the problem that prior art exists, thereby the rocking fly shears that a kind of transmission is reasonable, shearing force is big is provided.

The purpose of this utility model realizes in the following way.

The cantilever tip of this device has one to exchange winding-type three-phase asynchronous motor (1) connection belt pulley (2), belt pulley (2) connects flywheel (3) by belt, also has a pair of worm gear in addition, wherein: flywheel (3) connects worm screw (5) and worm gear (6) by pneumatic clutch (4), worm screw (5) is a planar double-enveloping worm, worm gear (6) is contained on the double-eccentric shaft, double-eccentric shaft turns (7) and bent axle weak point by bent axle length and turns (8) and form, upper scissor blade connecting rod (10) and lower scissor blade pull bar (9) are housed respectively on the double-eccentric shaft, pneumatic clutch (4) is by driving disc spacing pressing, the clutch wearing piece, brake strip, piston, cylinder body and spring are formed, driving disc spacing pressing is installed on the axle of worm screw (5), the clutch wearing piece is by being bolted on the flywheel (3), brake strip is to be fixed on the support of shearing machine by bearing pin, be connected with pin slide, between piston and driving disc spacing pressing, have one group of pin and spring, the swivel coupling of air feed is housed at the axle head of worm gear (6), upper scissor blade connecting rod (10) is connected upper cutter head (11) and following tool rest (12) respectively with lower scissor blade pull bar (9) one ends, lazy-tongs (13) are housed on the flying shear under(-)chassis, and following tool rest (12) is connected weight (16) with pulley (15) by steel cable by lower link pulley (14).

Driven by motor flywheel during work, flywheel drives worm screw again, worm drive worm gear drives crankshaft rotating, length on the bent axle turns and lacks and turn, drive simultaneously and go up the motion of lower scissor blade pull bar, the twisted point of upper scissor blade connecting rod and upper cutter head and upper cutter head are guide rail with the lower scissor blade pull bar, form the superposition rocking bar, the following pull bar of last lower scissor blade is that guide rail is realized shearing motion, shearing motion is relative motion, and when carrying on the lower link, lower link pulley (14) slides on lazy-tongs (13) inclined-plane, the lower scissor blade pull bar is pushed to flow direction of material one side, shears thereby realize following the tracks of.

The utility model compared with prior art has following advantage:

Adopt planar double-enveloping worm, mesh effectively, contact with pair contacts wire because this transmission is multiple tooth contact, enlarged contact area, improved the oil film formation condition, bearing capacity is big, the transmission efficiency height, thereby can improve shearing force greatly.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the utility model structural representation

In Fig. 1: (1) motor; (2) belt pulley; (3) flywheel; (4) pneumatic clutch; (5) worm screw; (6) worm gear; (7) bent axle length turns; (8) the bent axle weak point turns; (9) lower scissor blade pull bar; (10) upper scissor blade connecting rod bar; (11) upper cutter head; (12) tool rest under; (13) lazy-tongs; (14) lower link pulley; (15) pulley; (16) weight.

Embodiment:

The flywheel sky is enclosed within on the worm shaft, idle running when not shearing drives worm screw by pneumatic clutch during shearing and rotates, and pneumatic clutch has cylinder, when to the cylinder air feed, compressed air promotes piston and overcomes spring force and move, and compresses clutch friction plate and makes the realization transmission that fuses of flywheel and driving disc spacing pressing, when the cylinder exhaust, spring reset, piston reverses direction is moved, compress brake strip, realize braking.

Every shearing once, worm-wheel shaft (double-eccentric shaft) rotates a circle, last lower scissor blade returns to original position by original position again to clipped position, wait for next time and shearing,, one master controller is housed in worm shaft end for controlling this one-period, commutation in order to control pneumatic system electromagnetic gas valve, make the exhaust of air clutch cylinder, reach the braking purpose, Planar Quadratic enveloping worm major parameter is: centre-to-centre spacing q=800mm; Worm screw number of teeth Z1=1; Worm gear number of teeth Z2=65; Speed ratio i=65; Worm screw is calculated circular diameter d1=240mm; Worm gear calculates circular diameter d2=1360mm; Hands of worm dextrorotation, power of motor 55KW; Clutch compressed air minimum pressure 5.5 kilograms per centimeter shearing forces are 350 tons.

Claims

1, a kind of rocking fly shears device, its cantilever tip has one to exchange winding-type three-phase asynchronous motor (1) connection belt pulley (2), belt pulley (2) connects flywheel (3) by belt, also has a pair of worm gear in addition, it is characterized in that: flywheel (3) connects worm screw (5) and worm gear (6) by pneumatic clutch (4), worm screw (5) is a planar double-enveloping worm, worm gear (6) is contained on the double-eccentric shaft, double-eccentric shaft turns (7) and bent axle weak point by bent axle length and turns (8) and form, upper scissor blade connecting rod (10) and lower scissor blade pull bar (9) are housed respectively on the double-eccentric shaft, pneumatic clutch (4) is by driving disc spacing pressing, the clutch wearing piece, braking frictional plate, piston, cylinder body and spring are formed, driving disc spacing pressing is installed on the axle of worm screw (5), the clutch wearing piece is by being bolted on the flywheel (3), braking frictional plate is to be fixed on the support of shearing machine by bearing pin, be connected with pin slide, between piston and driving disc spacing pressing, have one group of pin and spring, the swivel coupling of air feed is housed at the axle head of worm gear (6), upper scissor blade connecting rod (10) is connected upper cutter head (11) and following tool rest (12) respectively with lower scissor blade pull bar (9) one ends, lazy-tongs (13) are housed on the flying shear under(-)chassis, and following tool rest (12) is connected weight (16) with pulley (15) by steel cable by lower link pulley (14).