CN2319904Y

CN2319904Y - Electromagnetic performer

Info

Publication number: CN2319904Y
Application number: CN 97242519
Authority: CN
Inventors: 施远强
Original assignee: NO 711 INST OF NO 7 ACADEMY OF CHINA SHIPPING INDUSTRY CORP
Current assignee: NO 711 INST OF NO 7 ACADEMY OF CHINA SHIPPING INDUSTRY CORP
Priority date: 1997-10-30
Filing date: 1997-10-30
Publication date: 1999-05-19
Anticipated expiration: 2007-10-30

Abstract

The utility model relates to an electromagnetic executor, which is a constitutive component and a control device of an electronic speed regulator. The utility model is composed of a position transducer assembly, a coupling and an executor body; the position transducer assembly and the coupling are respectively arranged on the executor body, and a driven rod of the position transducer assembly and an executor shaft of the executor body are connected into integration by a synchronous rod. The utility model has the advantages of compact structure, few parts, low cost, convenient installation and convenient adjustment; the utility model has no gaps in the transmission process, the rotating angle of the position transducer assembly is large, the sensitivity and resolution of the position transducer assembly are raised, and output voltage signals have strong anti-interference ability.

Description

Electromagnetic actuator

The utility model is a kind of electromagnetic actuator, belongs to the crucial control part cover of Digital Governor for Diesel Engine.

Straight-line displacement at the output shaft of PD serial diesel engine electron speed regulator converts rotatablely moving of position transducer to, adopts the method for ratch driven gear.This method can realize the angular displacement that position transducer is bigger equally, but the difficult control of the distance of ratch and gear, distance is too near, and then drive gap is little, and kinetic damping is big, makes the rolling bearing in the position transducer fragile; Apart from too far away, drive gap is big, and position transducer sensitivity descends, and causes the control system vibration easily.These situations all can influence the accurate control to diesel injection pump tooth bar position, make electronic speed regulation can not control fuel delivery exactly.This method part is many, processing technology complexity, Installation and Debugging inconvenience.

PD serial diesel engine electron speed regulator is angular displacement rotation output, again angular displacement is rotatablely moved by additional outside rod member and to be converted to rectilinear motion, drive the injection pump rack moving linearly, the angular displacement way of output like this and connecting mode, make that electric control gear is capable to become blow-by, shortcomings such as transmission link is many, each transmission link is under the blow-by situation, be subjected to the pollution of environment dust easily, aggravation wearing and tearing during running, fit clearance progressively increases, accumulate the bigger drive gap of construction system in numerous link gaps, very easily cause the control system concussion, this is the control system decreased performance, moves one of insecure major reason.This Mechatronic control system is loosely organized simultaneously, is not inconsistent with modern electromechanical integrated structure design philosophy.

In view of this, the purpose of this utility model is: it is highly sensitive to design a kind of position transducer, antijamming capability is strong, simple for structure, the reliability height, processing technology requires low, cost is low, and dock link with injection pump few, easy for installation, is difficult for causing the electromagnetic actuator of the rectilinear motion output of motion jam.

For achieving the above object, the utility model is achieved in that

The utility model is a kind of electromagnetic actuator, and it is the key device of electron speed regulator, according to the size of rotational speed governor Control current, accurately controls diesel injection pump tooth bar position, and this position signalling is fed back to rotational speed governor.Electromagnetic actuator comprises the position transducer assembly, coupling, and the actuator body is formed.The actuator body comprises: front end housing, inner housing, coil, bobbin, " armature--axle " assembly, back-moving spring, bearing, compositions such as gland, bonnet and shell body.Armature is fixedly connected by pin with axle, and the axle two ends are by two bearings, and " armature--axle " assembly overcomes the elastic force of back-moving spring under the electromagnetic force effect, and the compression spring is moved to the left (promptly refuel direction).Gland is fastening by screw, prevents that front end housing is loosening under the spring force effect left.Its outward flange is used for the electromagnetic actuator installing and locating.Coupling is solidly fixed with axle, and locking by the clamping of synchronizing bar one end, and bearing pin connects with diesel injection pump tooth bar rigidity, promote bearing pin and can promote tooth bar, the coupled device spring of bearing pin clamps, and realizes that like this tooth bar and electromagnetic actuator axle do not have the gap transmission, and non-between the two rigidity connects.Synchronizing bar and electromagnetic actuator axle are the rigidity interlock, drive follower lever along the same moved further of actuator axle parallel direction.Synchronizing bar is clamped by the spring and the follower lever shaft shoulder, realizes that no gap is synchronized with the movement, but non-rigidity connects, such drive method, make site error and nonparallelism between actuator axle and the follower lever, can not cause the bite of movement parts, reduced machining accuracy and installation requirement.The position transducer assembly comprises transducer, pressing plate, bearing, axle, steel band, wheeled steel, and slide plate etc. are formed.The follower lever dragging skateboard moves, and the rectilinear motion of slide plate converts rotatablely moving of wheeled steel to by steel band, thereby in the position transmission position transducer with the actuator axle, and to rotational speed governor output, the voltage signal of expression position size.

The utility model compared with prior art, its advantage: structure of the present utility model is tightly beaten, the part number is few, processing cost is low, transmission process does not have the gap, and position transducer assembly rotational angle is big, has improved the sensitivity of position transducer assembly and has divided the sample rate, the anti-tampering ability of output voltage signal is strong, installs easy to adjust.It directly connects with the tooth bar of diesel injection pump moving linearly, and transmission link is minimum, realizes the transmission of no gap, and because the universal joint effect of coupling is difficult for causing the motion jam, realizes " injection pump--electromagnetic actuator " hermetically sealed integral structure easily.

The utility model can also be gone further instruction from the following drawings and embodiment:

Fig. 1 is the whole front elevational schematic of the utility model.

Fig. 2 is the utility model front-view schematic diagram.

Fig. 3 is the vertical profile schematic diagram of Fig. 1.

Fig. 4 is the vertical profile schematic diagram of the position transducer assembly on Fig. 1.

Fig. 5 is the cross-sectional schematic of wheeled steel and slide plate among Fig. 4.

Fig. 6 is the vertical profile schematic diagram of coupling and part position transducer assembly among Fig. 3.

The drawing explanation:

The 1-gland, the 2-front end housing, the 3-spring base, the 4-coil, 5,17, the 27-spring,

The 6-bobbin, 7-actuator axle, the 8-shell body, the 9-bearing, the 10-bonnet,

The 11-ring washer, 12-armature, the 13-inner housing, 14-position transducer assembly,

The 15-synchronizing bar, the 16-coupling, the 18-sleeve, 19-speed regulator axle sleeve, the 20-steel band,

The 21-bearing, 22-transducer, 23-pressing plate, 24-wheeled steel, 25-upper cover body

The 26-follower lever, the 28-nut, the 29-connecting plate, the 30-slide plate, the 31-bearing,

The 32-sensing shaft, the 33-bearing pin

Below by accompanying drawing embodiment of the present utility model is described in detail:

The utility model is a kind of electromagnetic actuator, by position transducer assembly 14, and coupling 16, the actuator body is formed.

Actuator body: on actuator axle 7 major diameters, be with armature 12, both tighten up with counter-sunk screw, in the inner chamber of bonnet 10, linear bearing 9 and ring washer 11 are housed respectively, bonnet 10 again sleeve in the circular hole of shell body 8, be tightened to one with it with screw, the right section of actuator axle 7 is inserted among ring washer 11 and the linear bearing 9, and the right-hand member endoporus of armature 12 is nested with on the small boss cylindrical of bonnet 10, its end face pastes mutually with the middle convex surface of bonnet 10, the interior circular hole of inner housing 13 is nested with on the outer peripheral face of armature 12, its right side and outer peripheral face respectively with the internal chamber wall of shell body 8 and in round Zhou Taixiang paste, between armature 12 and inner housing 13 inner chambers, bobbin 6 and coil 4 are housed respectively, on the section of the left side of actuator axle 7, be with spring 5 and spring base 3 respectively, linear bearing 9, front end housing 2 is sleeved on linear bearing 9 peripheries, and be pressed in spring base 3 respectively, bobbin 6, on the end face of one end of coil 4 and inner housing 13, gland 1 is enclosed within on the actuator axle 7 and compresses front end housing 2 again, is solidly fixed with counter-sunk screw and shell body 8.

Position transducer assembly 14: by transducer (model is the W35 type) 22, be pressed on the bearing 21 by pressing plate 23, sensing shaft 32 is passed bearing to wheeled steel 24, with screw it is connected mutually, the transhipment angle of wheeled steel 24 equals the input position angle of position transducer assembly 14, steel band 20 is wrapped on the wheeled steel 24, and four screw in the two ends of steel band 20 are on slide plate 30; One end of follower lever 26 links to each other with connecting plate 29, and connecting plate 29 usefulness screws are fastened on steel band 20 and the slide plate 30, and its other end passes the outside of the shell body 8 that has bearing 31.Follower lever 26 dragging skateboards 30 move, the rectilinear motion of slide plate 30 converts rotatablely moving of wheeled steel 24 to by steel band 20, thereby the position of actuator axle 7 is transferred in the position transducer assembly 14, and to rotational speed governor output, the voltage signal of expression position size; Upper cover body 25 be packed in shell body 8 above.One end of synchronizing bar 15 is nested with on the follower lever 26 of shell body 8 outsides, spring 27 is sleeved on the follower lever 26, and be positioned among the inner groove of synchronizing bar 15, and acorn nut 28 fuses with follower lever 26 spiral shells, and be pressed on the spring 27, its other end is sleeved on the actuator axle 7, and both connect for rigidity.Synchronizing bar 15 be a rigidity with actuator axle 7, interlock, and synchronizing bar 15 drives the parallel same moved further of direction of follower levers 26 edges and actuator axle 7; Synchronizing bar 15 is clamped by the spring 27 and follower lever 26 shaft shoulders, realizes that no gap is synchronized with the movement, but non-rigidity connects, such kind of drive, make site error and nonparallelism between actuator axle 7 and the follower lever 26, can not cause the bite of movement parts, reduced machining accuracy and installation requirement.

Coupling 16, by sleeve 18, spring 17, speed regulator axle sleeve 19 are formed.Spring 17 is sleeved on the speed regulator axle sleeve 19, and sleeve 18 is enclosed within on speed regulator axle sleeve 19 and the spring 17, and speed regulator axle sleeve 19 swivel nuts are a kind of rigidity interlocks on actuator axle 7.Bearing pin 33 penetrates in the mounting hole of sleeve 18, and under the elastic force effect of spring 17, bearing pin 33 is clamped by sleeve mounting hole left border and speed regulator axle sleeve 19, realizes the no gap transmission of tooth bar and electromagnetic actuator axle 7 like this.

Claims

A kind of electromagnetic actuator comprises position transducer assembly (14) and joins and presses device (16), it is characterized in that:

A. position transducer assembly (14), comprising transducer (22) is pressed on the bearing (21) by pressing plate (23), sensing shaft (32) is passed bearing to wheeled steel (24), through screw it is connected mutually, steel band (20) is wrapped on the wheeled steel (24), the two ends of steel band (20) are screwed on slide plate (30), one end of follower lever (26) links to each other with connecting plate (29), connecting plate (29) by screw on steel band (20) and slide plate (30), its other end passes bearing (31), link to each other with synchronizing bar (15) by spring (27), upper cover body (25) is packed on the shell body (8);

B. coupling (16) is sleeved on the speed regulator axle sleeve (19) by spring (17), and sleeve (18) is enclosed within on speed regulator axle sleeve (19) and the spring (17), and speed regulator axle sleeve (19) cover is connected on the actuator axle (7).