CN2926675Y

CN2926675Y - Electric coil apparatus

Info

Publication number: CN2926675Y
Application number: CN 200620104665
Authority: CN
Inventors: 吕建清; 时晓云; 张根泉; 李三妹
Original assignee: Jiaxing Expert Machine Technique Co Ltd
Current assignee: Jiaxing Expert Machine Technique Co Ltd
Priority date: 2006-06-14
Filing date: 2006-06-14
Publication date: 2007-07-25
Anticipated expiration: 2016-06-14

Abstract

An electric jigger apparatus comprises a motor (1), a speed reducer (6) and a clutch. The clutch comprises a clutch shaft (7), a drive sleeve (12) and an output sleeve. The clutch shaft has a screw thread section (15), and the inner wall of the drive shaft has an internal thread which is compatible with the screw thread section. A driving spur gear (17) and a ratchet wheel (20) are provided respectively in front and rear part of the drive sleeve (11) internal wall; the output sleeve (11) is sheathed over the outside of the drive sleeve. A driven spur gear (19) and a ratchet wheel (21) are provided in central part of the output sleeve internal wall. When the ratchet wheel on the output sleeve sticks against the ratchet wheel on the drive sleeve, the teeth from the driven spur gear (19) of the output sleeve will registers with the gear slot of driving spur gear (17) in the drive sleeve. The engagement and disengagement process of the driving spur gear and the driven spur gear can be started automatically in accordance with the rotary speed of the clutch shaft and the crankshaft thus realizing automated control.

Description

Electric barring equipment

Technical field

The utility model relates to a kind of structure of electric barring equipment.

Background technique

Turbine engine, large-size machine, large fan and other mechanical large rotor all need to carry out dribbling with barring gear after shutdown or before the start, so that prevent accident, the working life of improving rotor.Chinese patent 97205229.1 has been introduced a kind of mechanical automatically overtaking barring appts, comprises motor, speed reducer and clutch.Wherein clutch is made of driven wheel of differential hollow shaft, duplicate gear, operating handle and helical gear, and an end of duplicate gear is the straight-tooth that spacing control is arranged, and the other end is the helical teeth that spacing control is arranged.Duplicate gear is installed on the driven wheel of differential hollow shaft, make the involute internal tooth or make the keyway formula for one section of driven wheel of differential hollow shaft endoporus, helical gear is fixed on the axle of driven equipment by axle sleeve, when the rotating speed of working host surpasses the jiggering rotating speed, produce axial force between duplicate gear and the helical gear, push into clutch open disengaged condition, thereby realize surmounting automatically.This barring gear need be used the operating handle manually-operable, can't control automatically.

Summary of the invention

The utility model is intended to propose a kind of barring gear that can control automatically, a kind of electric barring equipment.

This electric barring equipment comprises motor, speed reducer and clutch.The input shaft of speed reducer links to each other with shaft of motor.Clutch comprises clutch shaft, drive sleeve, output cover and clutch outer member.The rear portion of clutch shaft links to each other with the output shaft of speed reducer.There is a thread section front portion of clutch shaft.The internal thread that matches with thread section on the clutch shaft is arranged on the inwall of drive sleeve.Drive sleeve is enclosed within on the thread section of front portion of clutch shaft, and clutch shaft be done the axial screw displacement relatively.There is an active spur gear front portion of the outer wall of drive sleeve.Output is enclosed within outside the drive sleeve, and there is a driven spur gear that matches with active spur gear on the drive sleeve at the middle part of the inwall that output is overlapped.There is a ratchet at the rear portion of the outer wall of drive sleeve, and there is a ratchet at the rear portion of output cover inwall, and when the ratchet that output puts withstood tooth on the ratchet on the drive sleeve, the tooth of the driven spur gear that output puts and the slot of the active spur gear on the drive sleeve aligned.When moving after the drive sleeve, initiatively spur gear is meshed with driven spur gear, and during the drive sleeve reach, initiatively spur gear and driven spur gear are separated.

When this electric barring equipment uses, will export cover and be connected by the dish arbor.When by dish arbor rotating speed during less than the rotating speed of clutch shaft, the ratchet forward withstands hook tooth, because cooperating of the screw thread on the internal thread of drive sleeve and the clutch shaft moves behind the relative clutch shaft of drive sleeve, the active spur gear is meshed with driven spur gear, rotates thereby drive by the dish arbor.When being surpassed the rotating speed of clutch shaft by the rotating speed of dish arbor, drive sleeve will move forward, and be separated until active spur gear and driven spur gear, and ratchet oppositely slides along the ratchet flank of tooth, is coiled arbor to rotate alone.Thereby realized automatic control.

Description of drawings

Accompanying drawing 1 is the structural drawing of this electric barring equipment;

Schematic representation when the driven spur gear that accompanying drawing 2 overlaps for the active spur gear and the output of drive sleeve is separated;

Schematic representation when the driven spur gear that accompanying drawing 3 overlaps for the active spur gear and the output of drive sleeve is engaged to midway;

Schematic representation when the driven spur gear that accompanying drawing 4 overlaps for the active spur gear and the output of drive sleeve meshes fully.

Embodiment

As shown in Figure 1, this electric barring equipment comprises motor 1, speed reducer 6 and clutch.The input shaft of speed reducer links to each other with shaft of motor.Clutch comprises clutch shaft 7, drive sleeve 12, output cover 11 and clutch outer member 22.The rear portion of clutch shaft links to each other with the output shaft of speed reducer, and there is a thread section 15 front portion of clutch shaft.The internal thread that matches with thread section 15 on the clutch shaft is arranged on the inwall of drive sleeve.Drive sleeve is enclosed within on the thread section 15 of front portion of clutch shaft, and clutch shaft be done the axial screw displacement relatively.There is an active spur gear 17 front portion of the outer wall of drive sleeve 12.Output cover 11 is enclosed within outside the drive sleeve, and there is a driven spur gear 19 that matches with active spur gear 17 on the drive sleeve at the middle part of the inwall of output cover.There is a ratchet 20 at the rear portion of the outer wall of drive sleeve, and there is a ratchet 21 at the rear portion of output cover inwall.When the ratchet that puts of output withstood tooth on the ratchet on the drive sleeve, the tooth of the driven spur gear 19 that output puts and the slot of the active spur gear 17 on the drive sleeve aligned.When moving after the drive sleeve, initiatively spur gear is meshed with driven spur gear, and during the drive sleeve reach, initiatively spur gear and driven spur gear are separated.Other part among the figure is: 2 manual jiggering handles, and 3 safety switches, 4 spring cappings, 5 belleville springs, 8 axle bumpers, 9 oil-feed circles, 13 end caps, 14 by the dish arbor, 16 coupling, 18 by the dish box body, and 23 near switch, 24 adpting flanges.

The working procedure of this electric barring equipment is as follows: as shown in Figure 2, when by the rotating speed of dish arbor 14 during less than the rotating speed of clutch shaft 7, ratchet 21 forwards withstand the tooth of ratchet 20, drive sleeve 12 is rotated relative to clutch shaft 7, after making drive sleeve, the internal thread 25 of drive sleeve and the rotation direction of the screw thread 15 on the clutch shaft move, active spur gear 17 is meshed with driven spur gear 19, enters state shown in Figure 3.At this moment, drive sleeve also continue relative to clutch shaft rotate and after move, up to as shown in Figure 4, the ear end face of drive sleeve withstands the step place of clutch shaft.This moment, drive sleeve no longer moved axially, and clutch shaft 7 drives by dish arbor 14 by drive sleeve 12, output cover 11 and coupling 16 and rotates.When being surpassed the rotating speed of clutch shaft 7 by the rotating speed of dish arbor 14, opposite with said process, drive sleeve 12 is separated until active spur gear 17 and driven spur gear 19 with respect to clutch shaft backward rotation and reach.At this moment, ratchet will be on the ratchet flank of tooth reverse slide.Hence one can see that, and the process of above-mentioned engagement and disengaging will be carried out with the rotating speed that is coiled arbor automatically according to clutch shaft.

As shown in Figure 1, this electric barring equipment can also comprise one near switch 23.This is fixed on the wall of clutch outer member near switch.To the rear portion of drive sleeve sidewall, there is a flange 10 rear end of drive sleeve near the contact finger of switch, when contacting with above-mentioned flange near the contact of switch, is cut off near switch.This structure can make this electric barring equipment cut off the electricity supply automatically and shut down after finishing by the start-up operation of dish machine.

Claims

1, a kind of electric barring equipment, comprise motor (1), speed reducer (6) and clutch, the input shaft of speed reducer links to each other with shaft of motor, clutch comprises clutch shaft (7), drive sleeve (12), output cover (11) and clutch outer member (22), the rear portion of clutch shaft links to each other with the output shaft of speed reducer, there is a thread section (15) front portion of clutch shaft, the internal thread that matches with thread section on the clutch shaft is arranged on the inwall of drive sleeve, drive sleeve is enclosed within on the thread section (15) of the front portion of clutch shaft, and clutch shaft is done the axial screw displacement relatively, there is an active spur gear (17) front portion of the outer wall of drive sleeve (12), output cover (11) is enclosed within outside the drive sleeve, there is a driven spur gear (19) that matches with active spur gear on the drive sleeve at the middle part of the inwall of output cover, there is a ratchet (20) at the rear portion that it is characterized in that the outer wall of drive sleeve, there is a ratchet (21) at the rear portion of output cover inwall, when the ratchet that puts of output withstood tooth on the ratchet on the drive sleeve, the tooth of the driven spur gear (19) that output puts and the slot of the active spur gear (17) on the drive sleeve aligned.

2, electric barring equipment as claimed in claim 1, it is characterized by it and also comprise one near switch (23), be fixed near switch on the wall of clutch outer member, near the contact finger of switch rear portion to the drive sleeve sidewall, there is a flange (10) rear end of drive sleeve, when contacting with above-mentioned flange, be cut off near switch near the contact of switch.