CN102352793A

CN102352793A - Power generator driven by engine

Info

Publication number: CN102352793A
Application number: CN2011103421263A
Authority: CN
Inventors: 张波; 周华
Original assignee: CHONGQING RUNTONG DONGLI Co Ltd
Current assignee: CHONGQING RUNTONG DONGLI Co Ltd
Priority date: 2011-11-03
Filing date: 2011-11-03
Publication date: 2012-02-15

Abstract

The invention aims to provide a power generator driven by an engine, wherein the power generator has a simple structure, and can be used for solving the heat radiation problem of an electric unit. The structure of the power generator is characterized in that the engine and the power generator driven by the engine are supported on a rack, wherein the power generator is provided with an engine fan; the rack is formed by a frame-type rack with open periphery, and is provided with a box-type shell; an operation panel is contained at the front end of the shell, and the shell is provided with a first air inlet; the electric unit is contained in the middle of the shell; the rear end of the shell and the shell wall part corresponding to the power generator sink continuously towards the inner part of the shell so as to form a longitudinal barrel-shaped power generator containing space, and the bottom of the space is provided with a transition air inlet; the power generator and the engine fan are placed in the power generator containing space in a clearance mode; the clearance between the open end of the power generator containing space and the power generator forms a first exhaust port; and therefore, a first cooling air channel is limited between the shell and the power generator.

Description

Engine-driven electric generator

Technical field

The present invention relates to a kind of engine generator; Relate in particular to a kind of frame type frequency conversion engine generator; Can realize generating and electric welding output, wherein be set in the separate casing by engine-driven generator, electric unit and operation panel.

Background technique

The frequency conversion engine generator is compared with the conventional engines driving type electric generator and is had lot of advantages; Particularly its volume can be smaller and more exquisite; But owing to increased electric elements such as inverter; Need consider the heat dissipation problem of these electric elementss during design, otherwise these electric elementss possibly cause the generator cisco unity malfunction because temperature is too high.Heat dissipation problem for electric elementss such as solution inverters; The engine generator of notice of authorization number a kind of frequency conversion output for the Chinese patent of CN201225193Y discloses; Its inverter is placed on the downstream of engine blower; Cold wind directly blows to inverter through tap hole and cools off, no special cooling duct, and its cooling effect is limited.Application publication number is that the Chinese patent of CN102035303A has proposed another kind of solution; Be the cooling fan that utilizes motor equally; The chamber is pressed from both sides in the cooling that is provided with an inverter at inlet end, and is connected with the cooling duct of motor with a flexible pipe, though such mode possibly reach the effect of inverter cooling; But increased cooling fan of engine inlet end length; Its intake resistance is increased, reduces total air output of cooling duct, thus possibly influence motor and driving thereof generator cooling effect and make its cisco unity malfunction.Simultaneously; Its output of aforementioned two disclosed frequency conversion generators of patent is only considered the power supply purpose is provided, so the electric elements of its increase is mainly inverter, and the present invention has concurrently simultaneously power supply output and electric welding output are provided; The electric elements that more aforementioned two the disclosed schemes of patent of electric elements that need cool off relate to is more; Volume is bigger, if take existing art designs, the electric elements cooling effect that its frequency conversion, electric welding relate to or the normal operation of complete machine can receive very big influence.

Summary of the invention

The purpose of this invention is to provide a kind of simple in structure, engine-driven electric generator that can effectively solve the electric unit heat dissipation problem.

Be to realize above-mentioned purpose, engine-driven electric generator of the present invention, it constitutes with motor with by this engine-driven generator and is supported on the frame, and it first is characterised in that the rotor of generator is provided with motor ventilating fan; Frame is constituted as open frame-type frame on every side; On this frame, be provided with box-shaped shell; The front end of housing has been taken in operation panel and has been had first suction port; Electric unit has been taken at the middle part; The corresponding shell wall of the rear end of housing and generator position becomes the generator holding space to the enclosure interior depression continuously, is provided with the transition suction port in this bottom, space; Generator and motor ventilating fan are placed in the generator holding space with gap, and the open end and the gap between the generator in this space form first relief opening; Like this, between housing and generator, limit first cooling air passway.

The present invention is on the basis of first characteristic, and second is characterised in that, between motor and generator, also is provided with at a distance from fan housing; Said is the bowl-type of flat wall roughly at a distance from fan housing; It comprises cover surrounding wall portion and cover bottom wall portion; On the rear end outer periphery around the rotor that covers said generator, the front end and the said gap between rotor of cover surrounding wall portion form second suction port to the cover surrounding wall portion with a gap.Like this, said between fan housing and generator, generator holding space formation second cooling air passway.

The present invention is on the basis of first or second characteristic, and the 3rd is characterised in that, in rack space, on motor, is equiped with fuel tank, silencing apparatus and empty filter; Link to each other with the generator opposite side of a side of motor is provided with by this engine-driven power fan and covering power fan periphery and with the lead wind scooper of cylinder head of motor of cooling air, on wind scooper, establishes the 3rd suction port; On cylinder head, be provided with barge board, this barge board links to each other with wind scooper and cooling air is led cylinder head to realize the cooling of countercylinder head, and the passway on the terminal cylinder head that is covered of said barge board forms the 3rd relief opening; Like this, between wind scooper, barge board and engine housing and cylinder head, form the 3rd cooling air passway.

The present invention is on the basis of first characteristic, and the 4th is characterised in that, said housing comprises casing and case lid; This casing comprises the generator holding space that forms on integrally formed upper wall portions, lower wall portion, Zuo Bibu, You Bibu, rear wall parts and the rear wall parts; This casing be shaped as roughly cuboid, see that from the front the roomy body of the wide and frame of casing is consistent, its high and motor high unanimous on the whole; The tubbiness space of the vertical placement that is connected as a single entity with rear wall parts that the rear wall parts that said generator holding space is a casing forms to the box house depression continuously corresponding to the position of generator, the transition suction port is circular port and is opened on the casing rear wall of this holding space bottom; On frame, be provided with removable before frame, the front end that this preceding frame can be located at casing with embedding becomes its skeleton, casing is installed on the frame through this skeleton; Offer the panel window that said operation panel is installed in the middle and upper part of case lid, first suction port is a louvre type, is set at the bottom of said case lid; Case lid is after fastening with casing, on the former frame that is fixed separately again.

The present invention is on the basis of the 4th characteristic, and the 5th is characterised in that, also offers at the top of case lid to be used to install handle and handle aperture with matching; Handle is exerted oneself to hold finger for roughly the side is barrel-shaped, on the former frame that is fixed.

The present invention is at first, second, in the 4th or the 5th on the basis of arbitrary characteristic, and the 6th is characterised in that, electric unit be installed in vertically said before in the space of frame.

In accordance with a first feature of the invention; Constitute first cooling air passway between box-shaped shell and the generator; And comprise the electric unit that electric elements constituted that electric elements that frequency conversion is used and electric welding use, the operation panel of control electric unit; And the surface of generator, all be in first cooling air passway, can effectively realize the purpose that cools.Simultaneously; The temperature of the wind of cooling air passway discharge is still lower thus; And then blow to relative motor from its annular discharge opening, and can take away the heat on surfaces such as engine housing, fuel tank, cylinder head, silencing apparatus to a certain extent, increase the radiating effect of motor.

According to second characteristic of the present invention; Formed second cooling air passway between separated fan housing and generator, the generator holding space; Motor ventilating fan in the running; The bottom that its air draught one side is the generator holding space can produce a negative pressuren zone near the zone of transition suction port, thereby outside air flows into negative pressuren zone through the transition suction port on the one hand in a large number under action of negative pressure; Also get into the void space that between fan housing and generator, forms on the other hand through second suction port; The internal voids and the entering negative pressuren zone of the space between the rotor that pass generator amature are again outwards blown out by motor ventilating fan; So back and forth; Constantly take away the heat that the inner surface of corresponding generator is gathered, thereby can effectively increase the cooling effect of generator.

According to the 3rd characteristic of the present invention; Fuel tank directly is contained on the generator and is within the space of frame, can save the whole height space of generator to a certain extent, can reduce corresponding frame configuration; Thereby alleviate complete machine weight, realize miniaturization, the lightweight of generator; Engine configurations has independently the 3rd cooling air passway, can effectively guarantee the heat dissipation problem of motor itself.

According to the 4th characteristic of the present invention, not only guaranteed the good appearance of engine-driven electric generator, also solved the moulding production problem of housing, casing and case lid all can the disposable respectively polypropylene by lightweight (PP) or other resin injection moldings, and be in light weight; Simultaneously, also can more easily realize the installation of whole housing and controlling of whole engine-driven electric generator; The transition suction port is opened and is circular hole, can alleviate the air draught resistance of motor ventilating fan to a certain extent, makes the motor ventilating fan operation more steady.Case lid is fixed after fastening with casing on the former frame again, can further guarantee the firm installation of case lid.

According to the 5th characteristic of the present invention, the front end from engine-driven electric generator when handle can be realized carrying provides a Point of Strength.

According to the 6th characteristic of the present invention, electric unit is by in the vertically horizontal installation former frame space, can on fore-and-aft direction, practice thrift the complete machine space and reduces the length of complete machine; Simultaneously, electric unit is installed on the former frame rather than established support in addition and install, can reduce parts to a certain extent and make the complete machine lightweight.

Description of drawings

To only describe preferred implementation of the present invention in detail with embodiment's mode according to accompanying drawing below, accompanying drawing is following.

Fig. 1 is the stereogram of the engine-driven electric generator of one embodiment of the present of invention.

Fig. 2 is the stereogram that splits out the engine-driven electric generator behind the housing among Fig. 1.

Fig. 3 is the exploded perspective view of the engine-driven electric generator of Fig. 1.

Fig. 4 is the sectional view of the engine-driven electric generator of Fig. 1.

Fig. 5 is the stereogram of Fig. 3 mid frame.

Fig. 6 be among Fig. 2 before the exploded perspective view of frame and electric unit.

Fig. 7 is the sectional arrangement drawing of Fig. 3 mid frame and housing.

Fig. 8 is the local enlarged diagram of A portion among Fig. 7.

Fig. 9 is the local enlarged diagram of B portion among Fig. 7.

Figure 10 is the stereogram of casing among Fig. 3.

Figure 11 be among Fig. 3 casing by preceding respectant front view.

Figure 12 is the stereogram of case lid among Fig. 3.

Figure 13 be among Fig. 3 case lid by preceding respectant front view.

Figure 14 is the part of motor among Fig. 3 and the exploded perspective view of generator.

Figure 15 be among Figure 14 at a distance from fan housing by preceding respectant front view.

Embodiment

In whole explanations of the embodiment of the invention, " preceding ", " back ", " left side ", " right side " all are as the criterion with the direction of being indicated in the accompanying drawing 1.

In Fig. 1～Fig. 3, engine-driven electric generator of the present invention has: frame 3; The motor 1 that quilt flexibly supports in the bottom of this frame 3 and the assembly body of generator 2; Be the setting-in skeleton and be installed in the housing 4 on the frame 3 with the preceding frame 33 of frame 3 with preceding frame 33; Be used to control the electric unit 9 of motor 1 and generator 2 outputs; And the operation panel 8 that is used to control electric unit 9.

Like Fig. 2, Fig. 3 and shown in Figure 5, frame 3 constitutes and comprises: curve underframe 34 and the after-frame of erectting 35 by the steel pipe one; Vertically be positioned on the preceding frame 33 of the front end of underframe 34 removably; And level is positioned on the frame beam 32 that after-frame 35 reaches preceding frame 33 tops removably.Like this, frame 3 constitutes and makes open frame-type on every side.

Like Fig. 3, shown in Figure 5, underframe 34 is connected as a single entity with after-frame 35, as from behind or directly over see that the shape of after-frame 35 or underframe 34 is rectangular (being stereo representation among the figure).Underframe 34 comprises underframe left side plane member 34a, the right plane member 34b of underframe, the preceding plane member 34c of underframe that one links to each other; Between the left and right plane member 34a of the underframe of underframe 34 and arranged on left and right sides, 34b, be connected with a plurality of

cross members

31,31 ..., to support motor 1, generator 2, preceding frame 33 and housing 4.After-frame 35 comprises and the left and right plane member 34a of underframe 34, vertical after-frame left and right vertical member 35c, the 35b that links to each other of rear end one of 34b; And after-frame upper component 35a, after-frame left and right vertical member 35c, 35b link to each other with the same one of after-frame upper component 35a.

Like Fig. 5～shown in Figure 6, preceding frame 33 as see from the dead ahead and to be roughly rectangular (being stereo representation the figure), its width is basic consistent with the width of frame 3, and it is consistent with the height of motor 1 highly basically.Preceding frame 33 is turned back by sheet iron punching press flange and is connected as a single entity, and its upper and lower, left and right four sides are respectively preceding frame top 33a, preceding frame bottom 33b, preceding frame left part 33c and preceding frame right part 33d, and every side is planar; The position that former frame top 33a and preceding frame left part 33c and preceding frame right part 33d intersect is provided with the promptly preceding frame chamfered section 33f of transition chamfering joint, and this preceding frame chamfered section 33f is 45 degree plane shape chamferings, can certainly be circular arc R chamfering; Preceding frame bottom 33b left and right sides sidepiece respectively is provided with the mounting hole 219 that is welded with nut.Like this, the stable connection between the cross member 31 of frame 33 and underframe 34 before can guaranteeing, topple over unlikely generation front and back; And in fact flange after the punching press has played the stiffening rib effect, the intensity of frame 33 before guaranteeing; Both sides, former frame top are provided with preceding frame chamfered section 33f, mainly are to cooperate with housing 4 aesthetic appearance that increases the steadiness of installing and increase housing 4 is installed.Simultaneously; For further guaranteeing the stability of the fore-and-aft direction of preceding frame 33; The rear side of frame left part 33c and preceding frame right part 33d before its left and right sides portion is; The lower end of left and right 33c of former frame, 33d and preceding frame bottom 33b intersection vertically respectively weld one with the dunnage of preceding frame bottom 33b maintenance level (among the figure mark); Weld an oblique dunnage (not marking the figure) from the approximate mid-section of left and right 33c of this dunnage tip forward frame, 33d rear side again, thereby in the left and right sides preceding frame 33 is formed

triangular support

33e, 33e, the end of horizontal supporting plate is provided with the mounting hole 324 that is welded with nut among the triangular support 33e.Through hole 219,219 on hole on bolt 326,326,326,326 and the corresponding cross member 31 325,325,325,325 and the preceding frame bottom 33b and the hole 324,324 on the triangular support 33e, preceding frame 33 can be securely fixed on the

cross member

31,31 of frame 3.

Like Fig. 3, shown in Figure 5, frame beam 32 constitutes, and its main body is beam horizontal part 32a, and the front end bending downward vertically of beam horizontal part 32a forms beam vertical component effect 32b, and beam vertical component effect 32b end is welded with beam front end assembling set 32c; In addition, its member also comprises an independent beam rear end assembling set 32d, and it is actual to be two members (not being shown specifically among the figure) that can grasp steel pipe up and down of a T type.Reach the corresponding with it hole 327,327,327,327 on the preceding frame top 33a that is positioned at through the hole on the beam front end assembling set 32c 406,406,406,406, the front end of frame beam 32 can use bolt 328 to install on the former frames 33; Through beam rear end assembling set 32d through bolt 329 and on hole 341, the rear end of beam horizontal part 32a is clamped and fixed on the after-frame upper component 35a.

In Fig. 3, Fig. 5, at above-mentioned

cross member

31,31 ... In respectively be equiped with a pair of

shock absorbing seat

7,7 on the left and right side of two

cross members

31,31 after leaning on, every pair of shock absorbing seat of left and

right side

7,7 is connected as a single entity through mounting plate 71,71.Wherein, two pairs of

shock absorbing seats

7,7 link to each other with

cross member

31,31 through bolt 74;

Mounting plate

71,71 is mounted respectively on every pair of

shock absorbing seat

7,7 through bolt 75 again;

Mounting plate

71,71 is connected with motor through the mounting hole on bolt 72, the motor 73.Like this, the assembly body of motor 1 and generator 2 by longitudinal elasticity be supported on the frame 3.

Like Fig. 1～shown in Figure 3; Fuel tank 11 is disposed on the motor 1 with silencing apparatus 12, empty filter 13 and the space that is positioned at frame 3 is in the below of frame beam 32 simultaneously; Three's end face is basically on same plane, and this plane roughly constitutes the height of motor 1.

Like Fig. 3, shown in Figure 4, link to each other with generator 2 opposite side of a side of motor 1, promptly the bent axle 16 of the rear side of motor 1 is provided with the power fan 15 that is driven by said motor 1; The wind scooper 14 cylinder head 17, that cover said power fan 15 peripheries of the cooling air guiding motor 1 that ability is produced power fan 15; Be installed on the engine housing 19 of rear side of motor 1; Hand starting parts (not shown) is installed on the wind scooper 14 in addition; On the hand starting parts, offering three suction port 45, the three suction ports 45 of suction port shown in promptly scheming is many group bar-shaped troughs; At the outlet (not shown) place of cooling air on wind scooper 14 that wind scooper 14 is guided, be connected with barge board 18 and continue the guiding cooling air; Barge board 18 mainly covers the downside and the top of the passage between the radiating fin of the front side (not shown) of cylinder head 17; And three relief opening 48, the three relief openings 48 of the exhaust port that forms cooling air of the place, passway on the terminal cylinder heads 17 that covered of barge board 18 in promptly scheming are positioned at the approximate mid-section position of cylinder head 17 front sides.Like this; The cold wind that is sucked by power fan 15 by the 3rd suction port 45, the steric direction that is limited along wind scooper 14 by barge board 18 that limited with cylinder head 17 on radiating fin forms jointly cross wind passage (not shown), and from 48 discharges of the 3rd relief opening; Continue to blow to the parts on silencing apparatus 12 motors such as grade 1 again; And then take away their heat, thus form in the motor 1 independently i.e. the 3rd cooling air passway 50 of cooling air passway, realize effective cooling of motor.

Like Fig. 2, Fig. 3 and shown in Figure 14, generator 2 constitutes and comprises: connecting base 25, stator 23, rotor 24 and motor ventilating fan 22 in addition, between motor 1 and generator 2, also are provided with at a distance from fan housing 21.Stator 23 is fixed in the corresponding tapped hole of connecting base 25 (among the figure mark) through bolt 231; Connecting base 25 is provided with the hole 251,251,251,251 that is installed on the motor 1; Promptly cover the last correspondence of diapire 21b at a distance from the bottom of fan housing and be provided with porose 211,211,211,211; Through tapped hole 101 corresponding on bolt 252 and the motor 1, connecting base 25 is with being installed on the crankcase tank wall of motor 1 front side at a distance from fan housing 21.Motor ventilating fan 22 is installed in the front end end wall of rotor 24 through bolt 241 correspondences; Through bolt 242, rotor mounting hole 243, rotor 24 and the motor ventilating fan 22 that is attached thereto are connected an end of the bent axle 16 of motor 1 by tapering.

Like Fig. 1, Fig. 3, shown in Figure 4, engine-driven electric generator of the present invention also comprises a box-shaped shell 4 that is installed on the frame 3, and said housing 4 constitutes and comprises casing 41 and case lid 42.

Like Fig. 4, Fig. 7, Figure 10 and shown in Figure 11; Casing 41 be shaped as roughly cuboid; Be polypropylene (PP) or other resin integrated injection moldings with lightweight, its formation comprises: the generator holding space 40 of the tubbiness of vertically placing that upper wall portions 411, lower wall portion 412, left wall portion 413, right wall portion 414, rear wall parts 415 and rear wall parts 415 are recessed to form to the inside (also promptly forward) of casing 41 corresponding to the position of generator 2 continuously.This generator holding space 40 comprises surrounding wall portion 416 (promptly " bucket wall) and bottom wall portion 417 (promptly " bucket bottom "), and its surrounding wall portion 416 and bottom wall portion 417 are said from essential meaning, and the whole wall portion in this space 40 also constitutes the part of rear wall parts 415.The global shape of this generator holding space 40 is cylindrical; On its bottom wall portion 417, offer circular transition suction port 44; Transition suction port 44 is set to the diameter of its bore dia less than motor ventilating fan 22, and generator 2 and the motor ventilating fan 22 that is attached thereto then are set to be contained in gap in this generator holding space 40.

Shown in figure 10, in each inside sidewalls of casing 41, be equipped with stiffening rib 419 to increase the intensity of casing 41; Offer on the lower wall portion 412 of casing 41 four with the preceding frame bottom 33b of preceding frame 33 and the corresponding hole 404 of mounting hole 219,324 (like Fig. 6) on the triangular support 33e; On the upper wall portions 411 of casing 41, offer four corresponding holes 405 of mounting hole 327 (like Fig. 6) with the preceding frame top 33a of preceding frame 33; The position that the upper wall portions 411 of casing 41 and left and right wall portion 413,414 intersect is that 45 degree plane shape chamfering (can certainly be circular arc R chamfering) joints are casing chamfered section 33h, and corresponding relatively with preceding frame chamfered section 33f on the preceding frame 33 of frame 3.Shown in figure 11, the middle and upper part, right side in the rear wall parts 415 of casing 41 also offers cable-through hole 402 and mounting hole 403.The main effect of cable-through hole 402 is that lead that motor 1 and generator 2 draw etc. is linked to each other with electric unit 9 or operation panels 8 in the housing 4 through this hole; 403 of mounting holes are used to install the decorative sheet front end mounting plate 361 (like Fig. 3) on casing 41 right lateral side tops; In the present embodiment, on the left side of the rear wall parts 415 of casing 41, also become the rear wall parts recess 401 (also visible Figure 10) of a cuboid continuously to the inner recess of casing 41, contact with silencing apparatus 12 to avoid casing 41 with silencing apparatus 12 corresponding positions.

In Fig. 8～Fig. 9 and Figure 10～Figure 11, the front openings end end periphery of casing 41 is provided with groove 409, so that be connected with case lid 42.

Like Fig. 3～Fig. 4, Fig. 7 and Figure 12～shown in Figure 13, the operation panel 8 of operation motor 1 and generator 2 can be taken in the middle and upper part of case lid 42.Operation panel 8 is installed in the panel window 421 on the case lid 42, and its fore side is towards the outside, and the components and parts of operation panel one side is towards the inboard.Thus, form a panel holding space 20 of taking in operation panel 8 in the case lid 42, this panel holding space 20 forms the box-shaped space of housing 4 with the inner space of casing 41, and correspondingly, panel holding space 20 also just becomes the preceding end spaces of housing 4; Panel window 421 is the interior-type opening of a rectangle, and four jiaos of openings are provided with mounting hole (among the figure mark), and operation panel 8 is installed in the front-end face that the button that should make after the panel window 421 on the operation panel 8 does not roughly expose whole front panel.In the bottom of case lid 42, be provided with venetian blind 422 to form louvre type first suction port 43; At the top of case lid 42, also offer and be used to install handle 423 and handle aperture 424 with matching; Handle 423 is for roughly the side is barrel-shaped to hold finger firmly; Its front end has the flange (not shown) to be close to the periphery corresponding site of handle aperture 424; And the bottom of handle 423 is provided with two mounting hole (not shown)s, on the preceding frame 33 that it is installed in frame 3.In addition, at four jiaos of case lid 42, be provided with four installations, so that case lid 42 is installed on the preceding frame 33 of frame 3 with counterbore 425.

At Fig. 8～Fig. 9 and Figure 12～Figure 13, end, the rear end periphery of case lid 42 is provided with and casing 41 upper grooves 409 corresponding lip parts 426.Like Fig. 1, Fig. 3 and Fig. 7～shown in Figure 9, after lip part 426 and groove 409 fastened, casing 41 promptly formed whole housing 4 with case lid 42.See from the dead ahead; Housing 4 comprises that the width of width and said frame 3 of casing 41, case lid 42 is unanimous on the whole; Its height and the height of motor 1 (in the present embodiment, the height of motor 1 cardinal principle belongs to the height basically identical with the end face of fuel tank 11, silencing apparatus 12, empty filter 13) unanimous on the whole.Can guarantee good, the eurythmy of outward appearance of complete machine like this.

Like Fig. 2～Fig. 4 and shown in Figure 6, on the preceding frame 33 of frame 3 electric unit 9 is installed.In the present embodiment, electric unit 9 mainly comprises inverter 91 and coil groups 93 electric controling elements such as grade.The electric unit 9 that these electric elementss are formed is taked vertical horizontal mode to install in the space of former frame 33, and purpose is exactly the space of practicing thrift the complete machine fore-and-aft direction, reduces its length.As shown in Figure 6, inverter 91 vertically laterally is installed in the inner space of side U-shaped electric unit support 92, and coil groups 93 is because its width is little and the rich top, the outside that is installed in electric unit support 92 flatwise of installing space.And whole electric unit support 92, the right mounting plate 337 of electric unit that its right side is provided with through its support right side mounting plate that go up to be provided with 921 and inboard corresponding to frame right part 33d before in the preceding frame 33 also passes through the fixedly right side of former frame 33 of bolt (not shown); Its left side then tapped hole 922 of two ends through being arranged at U-shaped electric unit support 92 is fixed corresponding to the hole 322 on the frame left part 33c before in the preceding frame 33 and through two bolts 323.Like this, whole electric unit 9 is just roughly by in the space of the former frame 33 that is fixed with the mode of saving complete machine length space most.

Like Fig. 3～Fig. 4 and Fig. 7～shown in Figure 9, the preceding frame 33 of frame 3 is set to just pack into the front end of the casing 41 in the housing 4 of the mode that embeds so that case lid 42 when mounted, the ear end face of case lid 42 roughly with the installed in front face of preceding frame 33 near.Wherein, the mounting hole 405 (like Figure 10) on the upper wall portions 411 of the mounting hole 327 on the preceding frame top 33a and casing 41 is coaxial corresponding; Mounting hole 219,324 (like Fig. 6) on preceding frame bottom 33b and the triangular support 33e then with the lower wall portion 412 of casing 41 on mounting hole 404 (like Figure 10) coaxial corresponding.Like this, preceding frame 33 and the triangular support 33e that links to each other thereof the skeleton that promptly becomes casing 41 is embedded in the front end of casing 41.

When casing 41 is installed; As shown in Figure 3; Earlier preceding frame 33 and the triangular support 33e that links to each other thereof are embedded the front end of casing 41 and aim at the mounting hole of corresponding casing 41 and preceding frame 33; Through four corresponding apertures 325 and the bolt 326 that is provided with on the cross member 31 in the underframe 34, the lower wall portion 412 of casing 41 by underframe 34 and before frame 33 (together with coupled triangular support) be installed on the frame 3.The top of former frame 34; The rear end of frame beam 32 is installed in the intermediate portion, top of after-frame 3 by beam rear end assembling set 32d; The front end of frame beam 32 is arranged on the hole 406 on the beam front end assembling set 32c and hole 327 and the bolt 328 on the 33a of former frame top is set through correspondence, and the upper wall portions 411 of casing 41 is installed on the preceding frame 34 of frame by preceding frame 33 and frame beam 32.Like this, casing 41 just is fixed on the frame 3, and the generator holding space 40 of its rear end is set to reach the gap that the motor ventilating fan 22 that links to each other with generator 2 keeps setting with generator 2.

Like Fig. 3, shown in Figure 6, on four jiaos of preceding frame 33 front sides of frame, also be respectively equipped with the case lid mounting plate 334 of band mounting hole 335, these mounting holes 335 are corresponding with the hole 425 on the case lid 42, and its rear end is welded with the nut (not shown); The top of the front side of former frame 33, also be provided with the corresponding handle mounting plate 331 of the mounting hole (not shown) of handle 423 and on mounting hole 332.Like this; Case lid 42 buckles into groove 409 backs (seeing Fig. 8, Fig. 9) of casing 41 with the lip part 426 of case lid 42, through bolt 336 after installing operation panel 8; Before case lid 42 can be securely fixed on the frame 33 and with casing 41 tight closure, thereby form complete housing 42; Through bolt 333, handle 423 passes also the be fixed preceding side roof part of former frame 33 of handle aperture 424, with a carrying Point of Strength as engine-driven electric generator front end of the present invention.

Like Fig. 4, shown in Figure 7; The front end of housing 4 is to have taken in operation panel 8 in the panel holding space 20 that forms of case lid 42; The middle part of housing 4 is in the electric holding space 30 of the formed big uniform space of former frame electric unit 9 to be installed, and the generator holding space that the rear end of housing 4 forms accommodates generator 2 and motor ventilating fan 22; Be provided with first suction port 43 in the bottom of case lid 42, be provided with circular transition suction port 44 in the bottom wall portion 417 of generator holding space 40, and the gap between the open end of generator holding space 40 and the generator 2 form first relief opening 47.So, limited first cooling air passway 60 between housing 4 and the generator 2.In first cooling air passway 60; Cold wind sucks from first suction port 43; It purged the surface or the space of operation panel 8, electric unit 9, got into motor ventilating fan 22 intake regions by transition suction port 44, under the effect of motor ventilating fan 22; Outwards and by first relief opening 47 discharge along the gap between generator holding space 40 and motor; Take away the heat on generator 2 surfaces, blow to the surface of motor 1, fuel tank 11, silencing apparatus 12, cylinder head 17 etc. afterwards again, for motor 1 further cools.

Like Fig. 4 and Figure 14～shown in Figure 15, be set between motor 1 and the generator 2 at a distance from fan housing 21, it is shaped as the roughly bowl-type of flat wall, comprises cover surrounding wall portion 21a, cover bottom wall portion 21b and cover axis hole 21C.Constitute its cover surrounding wall portion 21a with a gap on the rear end outer periphery around the rotor that covers generator 2 24 at a distance from fan housing 21, front end and the gap between the said rotor 24 of cover surrounding wall portion 21a form second suction port 46.Like this, under motor ventilating fan near zone action of negative pressure, form second cooling air passway 70 between separated fan housing 21 and generator 2, the generator holding space 40.

Motor ventilating fan 22 in the running because the aperture of transition suction port 44 can produce very strong negative pressure less than the diameter of motor ventilating fan at the motor ventilating fan near zone.Cold wind gets into negative pressuren zone by first suction port 43 through transition suction port 44 like this, on the one hand; On the other hand; Near second suction port 46 air; Can get at a distance from the space that is positioned at the generator rear end that limits between fan housing 21 and the generator 2 via second suction port, and pass rotor, stator existence itself the space and between the space and get into the negative pressuren zone that between front end motor ventilating fan 22 and housing, forms, blown out to first relief opening by motor ventilating fan 22 thus again; So back and forth, realize effective cooling of 70 pairs of generators of second cooling air passway.

For realizing the more flexibly carrying of engine-driven electric generator of the present invention in the work-yard; Like Fig. 1～shown in Figure 4; Front end at the underframe 34 of frame 3 is last at the left and right plane member 34a of underframe, 34b, and the frame wheel 5 that can carry the operation of frame 3 front and back is arranged through

hole

52,52 and

bolt

51,51 crosswise fixed; In the rear end of the left and right plane member 34a of underframe, 34b, then be fixed with bearing 6 through

hole

64,64 and

bolt

63,63, bearing 6 is set to frame wheel 5 underframe 34 of frame 3 is horizontal basically; The bottom of bearing 6 is provided with bearing beam 61, links to each other with bearing 6 through bolt 62, can alleviate the vibrations of engine-driven electric generator in running to a certain extent.

In addition; For further beautifying the outward appearance of engine-driven electric generator; Like Fig. 3, Fig. 5, Fig. 7, shown in Figure 11, two ends are provided with the frame decorative sheet 36 of mounting hole, flatly connect through bolt (not marking among the figure); Its rear end is connected on the mounting plate 362 of front side, middle part of the right vertical member 35b of after-frame in the frame after-frame 35, and its front end is connected on the decorative sheet front end mounting plate 361 that housing rear wall parts 415 right upper portion are fixed through hole 403.

The present invention is not limited to the foregoing description, in the scope that does not break away from main points of the present invention, can carry out various design alterations.

For example, with 13 designs of empty filter not with fuel tank 11, silencing apparatus 12 at horizontal plane roughly; Perhaps housing 4 is designed to the housing of generally cylindrical body or other geometrical shapies; Perhaps, generator holding space 40 also can not be a cylindrical shape and can be square body or other shapes or the like; Even can the rear end of housing 4 be designed again the cooling air passway of covering engine thermal source spare, the wind of being discharged by first relief opening 47 continues to realize comprehensive cooling of motor 1 considered to cancel the 3rd cooling air passway 50 on the motor 1 independently.Certainly; For further increasing the effect of interim carrying engine-driven electric generator; Also can be in the after-frame 35 of frame after-frame left and right vertical member 35c, the last door handle device that adds of 35b, door handle device can be that welding is fixing rotatable, also can be folded.And so on.

Claims

1. engine-driven electric generator, it constitutes, and motor (1) and the generator (2) that driven by this motor (1) are supported on the frame (3), it is characterized in that:

Said generator (2) is provided with motor ventilating fan (22); Through making open frame-type frame (3) constitute said frame, on this frame (3), be provided with box-shaped shell (4) on every side; Its front end of said housing (4) has been taken in operation panel (8) and has been had first suction port (43); Electric unit (9) has been taken in the center; Its rear end and the corresponding shell wall of said generator (2) position become generator holding space (40) to the enclosure interior depression continuously, are provided with transition suction port (44) in this bottom, space; Said generator (2) and said motor ventilating fan (22) are placed in the said generator holding space (40) with gap, and the gap between the open end of said generator holding space (40) and the said generator (2) forms first relief opening (47); Like this, limit first cooling air passway (60) between said housing (4) and the said generator (2).

2. engine-driven electric generator as claimed in claim 1 is characterized in that:

Between said motor (1) and said generator (2), also be provided with at a distance from fan housing (21); Said is the bowl-type of flat wall roughly at a distance from fan housing (21); It comprises cover surrounding wall portion (21a) and cover bottom wall portion (21b); On the rear end outer periphery around the rotor that covers said generator (2) (24), the gap between the front end of said cover surrounding wall portion (21a) and the said rotor (24) forms second suction port (46) to said cover surrounding wall portion (21a) with a gap; Like this, said between fan housing (21) and said generator (2), said generator holding space (40) formation second cooling air passway (70).

3. according to claim 1 or claim 2 arbitrary engine-driven electric generator is characterized in that:

In said frame (3), on said motor (1), be equiped with fuel tank (11), silencing apparatus (12) and empty filter (13); Link to each other with the generator opposite side of a side of said motor (1) is provided with the power fan (15) that is driven by said motor (1) and covers said power fan (15) periphery and with the lead wind scooper (14) of cylinder head (17) of motor (1) of cooling air, on said wind scooper (14), establish the 3rd suction port (45); On said cylinder head (17), be provided with barge board (18); Said barge board (18) links to each other with said wind scooper (14) and the cooling air said cylinder head (17) that leads is cooled off with the countercylinder head; Passway on the terminal cylinder head (17) that is covered of said barge board (18) forms the 3rd relief opening (48); Like this, between said wind scooper (14), barge board (18) and engine housing (19) and cylinder head (17), form the 3rd cooling air passway (50).

4. engine-driven electric generator as claimed in claim 1 is characterized in that:

Said housing (4) comprises casing (41) and case lid (42); Said casing (41) comprises the said generator holding space (40) that integrally formed upper wall portions (411), lower wall portion (412), Zuo Bibu (413), You Bibu (414), rear wall parts (415) and rear wall parts (415) go up to form, said casing (41) be shaped as roughly cuboid; See that from the front the roomy body of the wide and said frame (3) of said casing (41) is consistent, its height is high unanimous on the whole with said motor;

Said generator holding space (40) for the rear wall parts (415) of said casing (41) corresponding to the position of said generator (2) continuously to the tubbiness space that the box house depression forms, the circular port of offering on the casing rear wall of said transition suction port (44) for this generator holding space (40) bottom;

Said frame (3) is provided with removable preceding frame (33), and said preceding frame (33) can be located at the skeleton that said casing (41) front end becomes said casing (41) with embedding, and said casing (41) is installed on the said frame (3) through this skeleton;

Said case lid (42) offers the panel window (421) that said operation panel (8) is installed in the middle and upper part, said first suction port (43) is a louvre type, is set at the bottom of said case lid (42); Said case lid (42) is fixed on separately on the said preceding frame (33) after fastening with said casing (41) again.

5. engine-driven electric generator as claimed in claim 4 is characterized in that:

The top of said case lid (42) also offers and is used to install handle (423) and handle aperture with matching (424); Said handle (423) is fixed on the said preceding frame (33) for roughly the side is barrel-shaped to hold finger firmly.

6. like claim 1,2,4,5 described arbitrary engine-driven electric generators, it is characterized in that:

Said electric unit (9) vertically laterally is installed in the space of said preceding frame (33).