CN202340430U - Riding mower - Google Patents

Abstract

The utility model relates to a riding mower, which mainly comprises a front axle and a double-bumper that connect two front wheels; a driving rear axle with hydraulic infinitely variable speed that connect two rear wheels; a vehicle rack with the doublebumper above the four wheels; a mowing-apparatus with noise reduction function and with an equidirectional synchronous belt that has a extension wheel under the vehicle frame; an engine with an anechoic trap, a headstock hood with noise reduction function and an airstrainer with anechoic function on the front part of the vehicle frame ; a vehicle seat that has noise reduction and has a Limit switch circuit protection on rear part above the vehicle frame; and a grass collecting box with noise reduction function and has a S type hook at the back of the vehicle.

Description

Drive mower

Technical field

The utility model relates to a kind of being used for by garden, park and the road, and the physical culture place cuts the grass on a lawn drives mower, and main improvement purpose is to make resultant effect help wide cut to mow, noise reduction, the mower that drives of environmental protection and safety.

Background technology

Hay mower is widely used in mowing by the selected mode of people's hobby.Because the mobility of the mower of hand push is poor, and when mowing in the practice, because the narrower swath in mower front portion often has generation so repeat to cut and leak the phenomenon of cutting, must goes to mend and cut, it is very arduous that operator's walking is mowed.If use sitting type, also cry to drive mower, then be seated than stand and feel different, but noise is big.

Silencer as the internal combustion engine silencing equipment of put-put particularly, is installed in exhaust doorway on the cylinder cover by extensively, reduces the noise of engine operation process.All there is relevant regulation countries in the world to the limiting value of the noise of various traveling vehicles and mower, and exhaust silencer comes to this one for reducing the device that exhaust noise is given birth to.The performance evaluation of silencer mainly contains acoustical behavior, indexs such as aerodynamic quality and structural behaviour.The considerable part of internal combustion engine belongs to pulsating nature low-frequency noise source, adopts resistance or impedance multiple and property and micro-perforated plate muffler more.Mostly the silencer of common internal combustion engine is the three-chamber silencer in particular for the silencer of put-put, and the noise elimination effect is limited; And outside must have bigger containment envelope, but itself not noise elimination effect.Moreover its shell temperature rise is higher, hot, influences safety.If add anechoic trap as improvement.

Artificial foot protection all has related request at standard STD.BSI EN 836-ENGL 1997 and GB 4706.78-2005/IEC 60335-2-77:2002.The mowing of most mowers highly has many retainings adjustable, and this safety to operation pedestrian's pin must be by the security regulations of strict control.This pin test that normally rehearses.But false pin test palpus every day test location is more, covers product quantity very little.To such an extent as to the mower of shipment is arranged, but measured false pin safety by the people individually, then all influence the mower order.Improved idea lets hay knife be elevated at several millimeters on chassis often.But because the sheet metal that cutter is the part of elongated bar bend, since tolerance, the reason of form and position tolerance and assembling cumulative errors, and the point of a knife at two ends is not high not the hanging down on a circumferential plane of just very difficult assurance in large quantities of actual productions; Just in case the thing difficulty that takes place is avoided, but also to guarantee ten thousand none go out safety problem.As a kind of inventive concept such as the ghost pacing up and down in ground: if with thick soft foamed plastics with mowing table and the outsourcing of mower many places it, be expected to receive the effect of security protection and noise abatement, really be that my observations may contain a grain of truth.

Phenomenon is cut in leakage for fear of cause in the adjacent gap of two cuttves, two cuttves of original sitting type mower, normally one in front and one in back.Please referring to Figure 23, this is the transmission sketch map of one in front and one in back two cuttves of original sitting type mower, among the figure, 23a be first cutter the axle on belt pulley, 23b be second cutter the axle on belt pulley, the 11st, the belt pulley of engine.The strip of two cuttves is to hang down mutually and reverse the commentaries on classics, so that mutually noninterfere; Usefulness be two-sided V-belt, also used three regulating wheels, main shortcoming is because of before and after cutter has, and makes to strengthen before and after cutting dish; Cause wheel base to strengthen, complete machine lengthening, the car turning radius become big; Vertical potentiality coefficient of stability variation, cost is added, and these all are undesirable.Two cuttves of another kind of original sitting type mower, though be not tandem, referring to Figure 24, because of two cuttves are reverse commentaries on classics so that mutually noninterfere, usefulness be two-sided synchronous band, also handy two synchronous tensions are taken turns, this makes the cost increasing.

Summary of the invention

The present invention relates to a kind of being used for by garden, park and the road, the physical culture place cuts the grass on a lawn drives mower, and main improvement purpose is to make resultant effect both help wide cut to mow, and operates comfortablely, and infinitely variable speeds helps noise reduction again, environmental protection and safety.

The present invention solves the technical scheme that its technical problem takes:

The mower that drives that noise reduction measure and hydraulic stepless speed change are arranged; Comprise the propons that turns to that connects two front-wheels, but connect the driving rear axle of the band hydraulic stepless speed change of two trailing wheels, the vehicle frame of the band dual fail-safe thick stick of four-wheel top; The mowing-apparatus that noise reduction is arranged of vehicle frame below; The airstrainer (4) of the engine of the band anechoic trap that the vehicle frame top is forward and headstock hood (1) that noise reduction is arranged and noise elimination, the vehicle seat that noise reduction is arranged after the vehicle frame upper center is inclined to one side, and there is the receipts grass case of noise reduction at the car rear; In addition, be saddle horse operator's personal protection, annex of the present invention is furnished with earplug, and anti-sound is cotton, earmuff and anti-sound head helmet.

The described propons that turns to that drives two front-wheels of the included connection of mower that noise reduction measure and hydraulic stepless speed change are arranged; Be included between two front-wheels (6) through known parallelogram steering mechanism; The left cambered axle and the right cambered axle that promptly connect through a connecting rod; The end that arm is fixed on control lever is saved through one in said left cambered axle upper end, and the other end of control lever then is connected on the gear and fluted disc (8a) that has steering wheel (8), so that handle the control direction.Like Fig. 9, Figure 10, Figure 13 and shown in Figure 15, the characteristic of described fluted disc (8a) is: the tooth of its fluted disc (8a) is an internal tooth, and particularly inner toothed surface has tapering; Its tapering is less than 30 degree, and preferably 18 spend; Install because fluted disc (8a) is a level, with connection parallelogram steering mechanism, and the axis of the gear of steering wheel (8) and plumb line are angled, generally are 18 degree, so that operation.

Described have noise reduction measure and hydraulic stepless speed change drive two trailing wheels of the included connection of mower (6b) but the driving rear axle (24) of band hydraulic stepless speed change; Shown in figure 20, this is to remove a plurality of connection screws and half back axle, and surplus half back axle and expose the front elevational schematic of inner two plunger pumps and pilot operated valve device group and a plurality of gears; Described back axle comprises two semiaxis that are located between two rear wheels; Between two semiaxis, be provided with differential mechanism, differential mechanism upwards connects the stepless speed changing mechanism and the brake device of second plunger pump (24c) and pilot operated valve device group successively thus, connects the clutch of first plunger pump (24b) again through the pilot operated valve device group; Again via the belt (22) of the belt pulley on the turning cylinder of first plunger pump; Transmit the power of engine spindle (11), it is characterized in that: said differential mechanism comprises a pair of axle shaft gear, the planetary gear assembly between the axle shaft gear; The most handy 2 star-wheels of the star-wheel of planetary gear assembly (24h), and each tooth number of star is 12; The planetary gear assembly is erected on the bigger gear wheel (24g), and preferably its number of teeth is 53; Described gear wheel (24g) and intermediate speed pinion (24f) engagement, preferably its number of teeth is 11; Described intermediate speed pinion (24f) is coaxial and connect firmly with idler gear (24e), and preferably its number of teeth is 48; Described idler gear (24e) meshes with the change-speed gearing (24d) of second plunger pump, and preferably its number of teeth is 13; The most handy 5 of the plunger of described second plunger pump; The coaxial brake disc that is provided with brake device of the change-speed gearing of second plunger pump; On the back axle (24) nearby of brake disc, be provided with friction plate; Brake bar and spring and form brake device are so that link to each other with Hand brake apparatus (13) with the foot brake device (12) at vehicle frame middle part; On the pilot operated valve device group between second plunger pump and first plunger pump; Be provided with gear shifting rod; Regulate and control the oil inlet and outlet on the pilot operated valve device group on the one hand; The angle that changes the plunger head inclined-plane of first plunger pump on the other hand changes output speed, so as with the forward gear (14) at vehicle frame middle part with retreat retaining (14b) and link to each other, with the composition stepless speed changing mechanism; When neutral, the angle on the plunger head inclined-plane of first plunger pump is zero, and first plunger pump has played the effect of clutch; And second plunger pump here is actually when oil motor and uses, and it drives change-speed gearing (24d) and series of gears engagement, thereby drives two semiaxis and trailing wheel (6b); On the pilot operated valve device group between second plunger pump and first plunger pump, also be provided with the Parking bar, the interior hydraulic fluid port of regulation and control pilot operated valve device group, when pulling the Parking position, hydraulic fluid port in the D shape bar of the inside of Parking bar hinders.But be provided with inlet valve (24k) with oil box outside being communicated with in described driving rear axle (24) inside; But in described driving rear axle (24), also be provided with permanent magnet (24j), or use horseshoe magnet, or be located at many places, in order to holding each steel and iron parts after permanent wearing and tearing and sneak into the iron filings in the oil.

The described vehicle frame that the band dual fail-safe thick stick that drives the included four-wheel top of mower of noise reduction measure and hydraulic stepless speed change is arranged, as shown in Figure 2, be provided with bumper in the place ahead of car, it is characterized in that: described bumper is parallel bars; Or three, or more, and every thick stick is that the pipe of middle straight or square tube are bent in two; And have two place's stent support at least, as improvement, described support is not a rigidity, but flexible; For example use spring, or elastomeric material such as rubber or polyurethane, in order to buffering.

The described mowing-apparatus that noise reduction is arranged that drives the included vehicle frame below of mower that noise reduction measure and hydraulic stepless speed change are arranged comprises and highly regulates part and mowing part; Referring to Fig. 5, highly regulate part, press parallelogram principle; By the preceding dead axle (18a) and the back dead axle (18c) that are located on the vehicle frame, and be located at preceding moving axis (18b) and the back moving axis (18d) that cuts on the dish (18) and be attached thereto moving rod member, and the steel wire rope (18h) that supplies pulling usefulness; Sector gear (18g), ratchet (18f) and heighten handle (15) and form is characterized in that: described preceding dead axle (18a) and the back dead axle (18c) that is located on the vehicle frame; And being located at the preceding moving axis (18b) that cuts on the dish and back moving axis (18d) is four summits of parallelogram, its corresponding limit is parallel in twos and equal, so; Spur steel wire rope (18h) through heightening handle (15) in any case; And through sector gear (18g), ratchet (18f) comes to several gears of heightening, the line of preceding dead axle (18a) on the vehicle frame and back dead axle (18c); Always with cut dish on preceding moving axis (18b) be parallel with back moving axis (18d), thereby at the upper and lower translation that has fundamentally guaranteed to cut dish and operate as normal; Can find out that from Fig. 6 described sector gear (18g) has multiple tooth, existing preferred 10 teeth have 10 retainings, and for example can cut height and transfer at 10-100mm, or by 25-85mm commonly used.Referring to Figure 10, the power of the part of mowing passes to first tool rest from engine spindle (11) through belt (21), again through being with (23) to pass to second tool rest synchronously, so that drive hay knife (20) work; As improvement, referring to Figure 14 and Figure 16, described hay knife (20) is provided with two or more wind wings, twines grass in order to cut off, and on described wind wing, is provided with a plurality of cutting edges (20a), and the angle on the two sides of described cutting edge is not the right angle, is preferably less than the acute angle of 60 degree; Further as improving, described hay knife (20) is provided with a plurality of hexagonal holes, or further improves, and described hay knife (20) is provided with a plurality of like honeycomb or like the convex-concave of wedge (7b), is noise reduction in order to the flow through audio frequency of the little air-flow of high speed of cutter of change.

The described mowing graphical designs partly and preferred method of thinking that the mowing-apparatus of noise reduction is arranged is a significant contribution of the present invention.As previously mentioned, the one in front and one in back scheme of two cuttves of original sitting type mower, usefulness be two-sided V-belt, also used three regulating wheels, because of before and after cutter has, make and strengthen before and after cutting dish, cause the complete machine lengthening.Two cuttves of another kind of original sitting type mower, though be not tandem, because of two cuttves are reverse commentaries on classics, usefulness be more expensive two-sided synchronous band, also handy two synchronous tensions are taken turns, this makes the cost increasing.Can find with two cuttves, be one in front and one in back, do not make to cut the increasing of dish front and back, and oppositely do not change, and two-sided synchronous band that need not be more expensive, grass does not leak, and what way does the approach that cutter does not bump use? Answer is yes.Use the diagram optimum seeking method: two point widths of getting bar shaped cutter (20) are diameter D, are that (23a is 23b) apart from being A at the belt wheel center by the gyroaxis of two cuttves; 2 circles draw; Referring to Figure 25, the anterior part that two circles intersect representes that with the filling hachure width B is exactly the heavy swath B that grass does not leak; Be that diameter is justified again with A, the angle of circumference perseverance is the right angle, hangs down mutually because of establishing two cuttves, and is synchronous rotation, so two two limits that cutter is an angle of circumference can be drawn a plurality of angles of circumference in addition and come preferred.Formula is arranged: B=D-A.Referring again to Figure 26, change A gets belt wheel apart from A=0.618D by optimum seeking method 0.618 method earlier, and mapping strengthens A more gradually, is to the maximum near D; Shown in the figure heavy swath B of maximum and the minimum A when cutter bumps soon.The size of dish (18) is cut in the A influence.Again by formula:

Getting designed ratios N=A/D, generally speaking, is good at 74%-92%.

For example get 74%, the long D=530 of cutter, the cutter heart is apart from A=390; Swath F=D+A=530+390=920, a bit few, it is good a little louder to hope; Heavy swath B=D-A=140, enough.

As another embodiment, get designed ratios N=A/D=92%, the long D=530 of cutter, the cutter heart is apart from A=490; Then the swath F=D+A=530+490=1020 of mower is a little bigger, and is good; Heavy swath B=D-A=40, also available.

If get heavy swath B=D-A≤20, then might leak grass, because of grass be about rolling, and cut dish and overwhelm by askew letting, just have once in a while sometimes cut less than grass.

Adopt PROE-WILDFIRE software variable picture easily, also available certainly other software.

The described engine and the car cover that noise reduction is arranged that drive the forward band anechoic trap in the included vehicle frame top of mower that noise reduction measure and hydraulic stepless speed change are arranged like Fig. 4 and shown in Figure 10, saved the engine that draws for seeing clearly to exempt to block; The enlarged drawing of anechoic trap such as Figure 18 and shown in Figure 19; Anechoic trap provided by the invention contains hush tube (7) and tank (2); The lower bend of described hush tube (7) immerses in the described tank (2), so that cooling effect is arranged.The effect of described tank is to kill two birds with one stone, except that the cooling, also with water for weight; Because of it is located at the mower front portion, so the counterweight effect is arranged.The water of tank faces the time spent and just adds, because of this disregards hauled weight; The water that adds does not add tankful, half has been arranged just.The lower end of the lower bend of described hush tube (7) and silencer outlet are joined.The characteristic of described tank (2) is, its side is provided with through hole, so that match with the lower bend of described hush tube (7); Its bottom is provided with the dewatering outlet.Described hush tube (7) is made up of pipe (7a) and brace in the multistage and the outer tube that contains a plurality of wedges (7b) array of micropore.The characteristic of pipe (7a) is to which is provided with cellular hexagon eyelet in described, or the polygon eyelet, or oval and oval eyelet; And the interior length of tube of multistage is that length is different and alternate; For example there is one section to be the long interior pipe of four/three-wavelength multiplying factor, then adjacent the is interior pipe of its quarter-wave multiplying factor only.The distribution of a plurality of eyelets that pipe (7a) is provided with in addition, described be not be uniformly distributed with but density is arranged; The position that is positioned at 1/4th pipe ranges at the middle part on one section pipe of four/three-wavelength multiplying factor is closeer eyelet, is the eyelet of dredging on the pipe of remaining part; And the characteristic of its eyelet is hexagon eyelet or many prismatics; The characteristic of the interior pipe of the quarter-wave multiplying factor of described eye with holes be the distribution of a plurality of eyelets that which is provided be not be uniformly distributed with but density is arranged; The position that is positioned at 3/8ths pipe ranges at the middle part on this section pipe is closeer eyelet, is the eyelet of dredging on the pipe of remaining part.Described eyelet is polygonal, and is preferably hexagonal; As improvement, perhaps the characteristic of its eyelet is many prismatics, or six prismatics, or pull the polygonal of golden flange a little; Perhaps the characteristic of its eyelet is the described wedge (7b) that micropore is arranged, and has quarter-wave effect and dilatational wave effect and honeycomb effect.On the face of described outer tube (7b), be provided with the convexity of many drawings, being the polygonal pyramid shape is that multiaspect is cone-shaped, and particularly the hexagonal pyramid shape is called wedge (7b); The characteristic of described wedge is, its root from the punching press of metallic plate is a hexagon, from the root to the top, dwindles, and roughly its breadth depth ratio is one to one, or to one to one five.And the top of the wedge of the described hexagonal pyramid shape of each on the face of described hush tube is provided with micropore, and its approximate diameter is advisable at 0.1 to 0.5 millimeter.On the face of pipe (7a), as improvement, perhaps its eyelet also can change the convexity that is made as many drawings in described; Being the polygonal pyramid shape is that multiaspect is cone-shaped, and particularly the hexagonal pyramid shape also can be described as wedge; But its breadth depth ratio is an One to naught point eight, or to one. four to one.Many wedges are formed the how stupefied structure of wedge, and the hexagonal that its arrangement at each face is a honeycomb is polygonal, or at random.In hush tube or can partly be filled with the nonmetallic materials of metallic fiber or heatproof; Or can partly be filled with anti-middle warm sound-absorbing material such as sound-absorbing porous material or flexible material and film material.Described porous material such as fiber-like, the foam class, particulate species, single with good, more or less mixing application is good.Also usable fibers class such as rock wool, or glass fiber, or mineral wool super glass wool particularly; Or want fireproof with the foam class; Or with particulate species such as expanded perlite, porous clay brick, and the fabric of heatproof, felt is filled or is attached; In order to further improved performance index, and comprehensive composition can reach noise reduction purpose preferably.Multiple material has complementary low-and high-frequency sound absorption usefulness.Many wedges have been added area of dissipation; Particularly many wedges that micropore is arranged not only have the micropore effect of noise reduction, and the latent effectiveness of hypereccrisia liquid is arranged.As extending, but many wedges also reverse-drawing promptly outwardly to add area of dissipation.Between silencer and engine, also can assemble the pad of not only making heat insulating mattress but also making beam.Between the outlet of silencer and described hush tube (7), also can assemble the pad of not only making heat insulating mattress but also making beam.Anechoic trap provided by the invention is provided with numerous large-area wedge zones, contains numerous wedges that micropore is arranged, and has the wedge resistance to fall effect and micropore effect.The beneficial effect that anechoic trap provided by the invention causes is: the combination property that increases noise elimination effect and lifting silencer is as inserting loss, sound transmission loss, noise abatement amount and attenuation, and cooling.As a kind of inventive concept such as the ghost pacing up and down in ground: if with thick soft foamed plastics, or as improving, fully utilize above-mentioned various noise elimination damping materials and regional with numerous large-area wedges; Be located at mowing table (18), referring to Figure 21, and mower many places such as headstock hood (1); Referring to Figure 11, like vehicle body (10c), referring to Figure 12; The vehicle seat that noise reduction is arranged after also having the vehicle frame upper center partially, and there is the receipts grass case of noise reduction at the car rear, is expected to receive the effect of security protection and noise abatement.In addition, be saddle horse operator's personal protection, annex of the present invention is furnished with earplug, and anti-sound is cotton, earmuff and anti-sound head helmet.Also be provided with the artificial foot protection plate that contains turning joint in both sides, mower middle part.The described artificial foot protection plate that contains turning joint that is provided with in both sides, mower middle part is made up of protective plate and turning joint; It is characterized in that described protective plate is a sound absorption material and a left side of selecting for use, right each one; But in the time will laying side Lysimachia sikokiana plate on the right side sometimes, just an on the left side is laid the artificial foot protection plate; Described protective plate profile preferably sufficient shape the bigger waveform in two promptly arranged, to strengthen caution association and the artistic image that foot is careful; Described protective plate preferably uses soft but not too soft shore hardness at 65 to 95 materials rubber for example; Polyurethane or polyvinyl chloride are made main sheet material; Its usefulness is to discharge water when putting down work; For example be placed on when cutting dish (18) both sides, adagio more is difficult for hindering grass, and rubber slab is more convenient for casing.Described protective plate is the material of available hard also.Described protection edges of boards are provided with mobilizable hinge, do not limit one or more or use flexible material, are aided with stop before going too far determinate spacing again, if described protective plate is decontroled can work and change get on to be convenient to case just passable.As extending or improving, described protective plate also can be made as dismountable, puts during work, takes off when not working.In order to prevent trouble before it happens, put prevention first, guarantee that the complete machine of a large amount of shipment all can detect through false pin.Described protective plate also can be used on other place of fuselage, and for example the top of two trailing wheels is protected.As another embodiment, also available acoustic material is processed car load and is not open, but on the top is arranged, or totally-enclosed car type shines in order to retaining, or full sound insulation.The beneficial effect of various noise abatement measures is: not only utilize the impedance of sound-absorbing material different characteristic, reduce reflected sound, and utilize aperture low frequency diffraction shadow zone principle, establish sound barrier and weaken high-frequency noise.It is many that described earplug uses the pre-mould mode earplug, is molded as certain geometry with flexible plastic or soft rubber; Or use the foamed plastics earplug; In the hope of sound insulation property and comfortableness.Described anti-sound cotton is to handle and process through chemical tendering with super glass wool, the most handy 1-3 micron diameter be good; And process the fritter taper, so that fill in one's ear; The cotton sound insulation of anti-sound is more effective than common cotton, and sound-insulation value improves along with the increase of noise frequency, and is more effective to isolated high-frequency noise, uses anti-sound cotton, and contact does not only have obstruction to language, and speech articulation is increased.Described earmuff is the earflap device of earphone class, or uses the music earmuff, increases the enjoyment of work.Described anti-sound head helmet is the motorcycle helmet class, also has the security effect.

The vehicle seat that noise reduction is arranged after described vehicle frame upper center is inclined to one side is also characteristic: vehicle seat is surrounded by thick noise reduction foamed material, and is removable before and after the vehicle seat; Vehicle seat is provided with the people to be connected when sitting down, when the people leaves with regard to obstructed limit protection switch; Or non-contacting human inductor is a sensor, and protective effect is also arranged.There is the receipts grass case (10) of noise reduction at described car rear, is provided with 2 hooks (17), it is characterized in that S shape, has on the hanger (16) of pin so that hang over 2 of being located at behind the vehicle frame, and pin is to be stuck in versatilely in the S shape, and purpose is can artificial gyration to become reconciled with grass with getting.The foregoing single face that two cuttves are driven in the same way is with synchronously, too tightly and not installs on the production line fortunately in discovery in the workshop; As improvement; Be with (23) good installation synchronously in order to make the single face that drives two cuttves in the same way; Referring to Figure 22, be equipped with regulating wheel (23c), described regulating wheel (23c) contacts with the no flank of tooth of (23) with single face synchronously; So described regulating wheel is anodontia circle wheel; Regulating wheel is contained on the tensioning support (23d), and the bolt (23e) that tensioning support (23d) can be fixed is versatilely transferred for balance pivot, is to be inferred by adjusting bolt (23f) on the fixing minor adjustment frame (23h) and setting nut (23g).

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is the sketch map that drives the mower complete machine.

Fig. 2 is the sketch map that removes the mower complete machine of shell.

Fig. 3 is the schematic side view that drives the mower complete machine.

Fig. 4 is an elevational schematic view of removing the mower complete machine of shell.

Fig. 5 is the schematic side view of height-regulating mechanism of removing the mower complete machine of shell.

Fig. 6 is the schematic side view of the gear shift position of height-regulating mechanism.

Fig. 7 is the sketch map of wedge (7b).

Fig. 8 is a sketch map of receiving the S-hook (17) of careless case.

Fig. 9 is the sketch map of fluted disc (8a).

Figure 10 is a bel-drivenn elevational schematic view of removing the mower of shell.

Figure 11 is the sketch map that the headstock shell (1) of honeycomb wedge and noise elimination damping material is arranged.

Figure 12 is the sketch map that the body shell (10c) of honeycomb wedge and noise elimination damping material is arranged.

Figure 13 is the generalized section of fluted disc (8a).

Figure 14 is the sketch map of a kind of hay knife (20).

Figure 15 is the front elevational schematic of fluted disc (8a).

Figure 16 is the part enlarged diagram of hay knife (20).

Figure 17 is the sketch map of the face that cuts off of wedge (7b).

Figure 18 contains hush tube (7) and the anechoic trap of tank (2) and the sketch map of silencer.

Figure 19 is the sketch map of the interior pipe (7a) of hush tube (7).

But Figure 20 is the front elevational schematic of driving rear axle (24) of a half-shells of dismantling.

Figure 21 is the front elevational schematic of cutting dish (18) that honeycomb wedge (7b) and noise elimination damping material (7f) are arranged.

Figure 22 is the single face that drives two cuttves in the same way is equipped with regulating wheel (23c) synchronously with (23) a sketch map.

Figure 23 be reverse drive one in front and one in back the double V-belt of two cuttves be equipped with the sketch map of 3 regulating wheels.

Figure 24 is the sketch map that the two-sided synchronous band of two cuttves of reverse drive is equipped with 2 regulating wheels.

Figure 25 is to be that (23a 23b) apart from be A, draws the sketch map of weight swath B at the belt wheel center with the diagram optimum seeking method by two cutter gyroaxises.

Figure 26 is when just not bumped by two cuttves with the diagram optimum seeking method, obtains the sketch map of maximum heavy swath B.

Like Fig. 1 to shown in Figure 26, among the figure:

1. be headstock hood (1);

2. be tank (2);

3. be car light (3);

4. be the airstrainer (4) of eliminating the noise;

6. be two front-wheels (6);

6b. be two trailing wheels (6b);

7. be hush tube;

7a. be the interior pipe of hush tube;

7b. be wedge;

8. be steering wheel (8);

8a. be fluted disc (8a)

9. be tank;

10. be the receipts grass case (10) of noise reduction;

10c. be vehicle body (10c);

11. be engine spindle and belt pulley;

12. be foot brake device (12)

13. be Hand brake apparatus (13);

14. be forward gear (14);

14b. be to retreat retaining (14b);

15. be to heighten handle (15);

16. be provided in a side of 2 hangers (16) that pin is arranged behind the vehicle frame;

17. be the S-hook (17) of receiving careless case;

18. be to cut dish (18);

18a. be preceding dead axle (18a);

18b. be preceding moving axis (18b);

18c. be back dead axle (18c);

18d. be back moving axis (18d)

18h. be steel wire rope (18h);

18g. be sector gear (18g);

18f. be ratchet (18f);

20. be hay knife (20);

20a. be wind wing cutting edge (20a);

21. be the driving belt (21) of engine to cutter;

22. the belt (22) of the belt pulley that is engine to the turning cylinder of first plunger pump of back axle;

23. be that the single face that drives two cuttves is with (23) synchronously;

23a. the gyroaxis that is first cutter is belt wheel center (23a);

23b. the gyroaxis that is second cutter is belt wheel center (23b);

A. the gyroaxis that is two cuttves is belt wheel center (23a, 23b) distance;

B. be heavy swath B;

D. two point widths that are bar shaped cutter (20) are diameter D;

23c. be regulating wheel (23c);

23d. be that regulating wheel is contained in tensioning support (23d);

23e. be the fixing bolt (23e) of tensioning support;

23f. be to regulate bolt (23f);

23g. be to set up nut (23g);

23h. be the minor adjustment frame of fixing (23h);

24. but be the driving rear axle (24) of band hydraulic stepless speed change;

24b. be the clutch that the pilot operated valve device group connects first plunger pump (24b);

24c. be the stepless speed changing mechanism and the brake device of second plunger pump (24c) and pilot operated valve device group;

24d. be the change-speed gearing (24d) of second plunger pump;

24e. be idler gear (24e);

24h. be the star-wheel (24h) of planetary gear assembly;

24g. be gear wheel (24g);

24f. be intermediate speed pinion (24f);

24k. be inlet valve (24k);

24j. be permanent magnet (24j);

Embodiment

The present invention relates to a kind of mower that drives, main improvement purpose is to make resultant effect both help wide cut to mow, and operates comfortablely, and infinitely variable speeds helps noise reduction again, environmental protection and safety.Because taked multiple noise reduction measure and technical scheme and preferred graphical designs method; So the mower that drives of noise reduction measure and hydraulic stepless speed change is arranged; Comprise the propons that turns to that connects two front-wheels, but connect the driving rear axle of the band hydraulic stepless speed change of two trailing wheels, the vehicle frame of the band dual fail-safe thick stick of four-wheel top; The mowing-apparatus that noise reduction is arranged of vehicle frame below; The airstrainer 4 of the engine of the band anechoic trap that the vehicle frame top is forward and headstock hood 1 that noise reduction is arranged and noise elimination, the vehicle seat that noise reduction is arranged after the vehicle frame upper center is inclined to one side, and there are the receipts grass case 10 and vehicle body 10c of noise reduction in the car rear; And the earplug of being furnished with for saddle horse operator's personal protection, anti-sound is cotton, all annexes of earmuff and anti-sound head helmet, and its integrated quality increases.Again because the propons that turns to that drives two front-wheels of the included connection of mower of noise reduction measure and hydraulic stepless speed change is arranged; Be included between two front-wheels 6 through known parallelogram steering mechanism; The left cambered axle and the right cambered axle that promptly connect through a connecting rod; The end that arm is fixed on control lever is saved through one in said left cambered axle upper end, and the other end of control lever then is connected in the gear that has steering wheel 8 and has on the fluted disc 8a of tapering, so be convenient to steering.Like Fig. 9, Figure 10, Figure 13 and shown in Figure 15, the characteristic of described fluted disc 8a is: the tooth of its fluted disc 8a is an internal tooth, and particularly inner toothed surface has tapering, and does not have originally; If external tooth because of external tooth is prone to the phenomenon of stepping down to external tooth, does not then have the external gear of internal gear and steering wheel to join tacitly like this; Because be improved to tapering or chamfering at present, just more be prone to match again with oblique tooth.Its tapering is less than 30 degree, and preferably 18 spend; Install because fluted disc 8a is a level, with connection parallelogram steering mechanism, and the axis of the gear of steering wheel 8 and plumb line are angled, generally are 18 degree, so be convenient to operation; The gap of form and position tolerance will be allocated by live telecast, and adds grease lubrication.

Again because but the driving rear axle 24 of the band hydraulic stepless speed change that drives two trailing wheel 6b of the included connection of mower of noise reduction measure and hydraulic stepless speed change is arranged; Shown in figure 20, this is to remove a plurality of connection screws and half back axle, and surplus half back axle and expose the front elevational schematic of inner two plunger pumps and pilot operated valve device group and a plurality of gears; Described back axle comprises two semiaxis that are located between two rear wheels; Between two semiaxis, be provided with differential mechanism, differential mechanism upwards connects the stepless speed changing mechanism and the brake device of the second plunger pump 24c and pilot operated valve device group successively thus, connects the clutch of the first plunger pump 24b again through the pilot operated valve device group; Again via the belt 22 of the belt pulley on the turning cylinder of first plunger pump; Transmit the power of engine spindle 11, it is characterized in that: said differential mechanism comprises a pair of axle shaft gear, the planetary gear assembly between the axle shaft gear; The most handy 2 star-wheels of the star-wheel 24h of planetary gear assembly, and each tooth number of star is 12; The planetary gear assembly is erected on the bigger gear wheel 24g, and preferably its number of teeth is 53; Described gear wheel 24g and intermediate speed pinion 24f engagement, preferably its number of teeth is 11; Described intermediate speed pinion 24f is coaxial and connect firmly with idler gear 24e, and preferably its number of teeth is 48; The change-speed gearing 24d of the described idler gear 24e and second plunger pump engagement, preferably its number of teeth is 13, the reinforcement so formed decelerator, and formed differential mechanism and make and turn flexibly.The most handy 5 of the plunger of described second plunger pump, more than the plunger of first plunger pump, the cylinder diameter of each plunger is just bigger, pretends to be oil motor, and output torque is just bigger.Because the coaxial brake disc that is provided with brake device of the change-speed gearing of second plunger pump; On the back axle 24 nearby of brake disc, be provided with friction plate; Brake bar and spring and form brake device are so be convenient to link to each other with Hand brake apparatus 13 with the foot brake device 12 at vehicle frame middle part; The foot brake device 12 and the Hand brake apparatus 13 of this car are actually same set of mechanism.On the pilot operated valve device group between second plunger pump and first plunger pump; Be provided with gear shifting rod; Regulate and control the oil inlet and outlet on the pilot operated valve device group on the one hand; The angle that changes the plunger head inclined-plane of first plunger pump on the other hand changes output speed, thus be convenient to the forward gear 14 at vehicle frame middle part with retreat retaining 14b and link to each other, with the composition stepless speed changing mechanism; When neutral, the angle on the plunger head inclined-plane of first plunger pump is zero, dallies and no-output, and first plunger pump has played the effect of clutch; Forward gear 14 with retreat the retaining 14b link to each other, the manipulation stepless speed changing mechanism; When stepping on forward gear 14, the gear shifting rod on the pilot operated valve device group between second plunger pump and first plunger pump, the oil-in on the regulation and control pilot operated valve device group; Step on deeply, greatly then the speed of a motor vehicle is fast to make oil-in; Step on shallowly, oil-feed is young, and then the speed of a motor vehicle is slow, the existing stepless change retaining of historical facts or anecdotes; Retreat retaining during 14b when depressing, the gear shifting rod on the pilot operated valve device group between second plunger pump and first plunger pump is reverse, makes the oil inlet and outlet on the regulation and control pilot operated valve device group reverse, makes the counter-rotating of second plunger pump, and the decelerator that drives back reverses with differential mechanism, makes it to move backward.Use because of second plunger pump here is actually when oil motor, it drives change-speed gearing 24d and meshes with series of gears, thereby drives two semiaxis and trailing wheel 6b.On the pilot operated valve device group between second plunger pump and first plunger pump, also be provided with the Parking bar, the interior hydraulic fluid port of regulation and control pilot operated valve device group, when pulling the Parking position, hydraulic fluid port in the D shape bar of the inside of Parking bar hinders.But it is be provided with inlet valve 24k with oil box outside being communicated with, so convenient lubricated in described driving rear axle 24 inside; But in described driving rear axle 24, also be provided with permanent magnet 24j, or use horseshoe magnet, effective because of You Ci rotation stream, or be located at many places, hold each steel and iron parts after wearing and tearing for a long time and sneak into the iron filings in the oil so be beneficial to.

Because it is the vehicle frame of the band dual fail-safe thick stick that drives the included four-wheel top of mower of noise reduction measure and hydraulic stepless speed change is arranged, as shown in Figure 2 again, be provided with bumper in the place ahead of car; It is characterized in that: described bumper is parallel bars; Or three, or more, and every thick stick is that two is curved; The pipe of middle straight or square tube, and have two place's stent support at least; Parallel bars are than single should more insuring; As improvement, described support is not a rigidity, but flexible, for example uses spring, or elastomeric material such as rubber or polyurethane, so be more conducive to buffering.

Because the mowing-apparatus that noise reduction is arranged that drives the included vehicle frame below of mower of noise reduction measure and hydraulic stepless speed change is arranged, comprise and highly regulate part and mowing part again; Referring to Fig. 5, highly regulate part, press parallelogram principle; By the preceding dead axle (18a) and the back dead axle 18c that are located on the vehicle frame, and be located at preceding moving axis 18b and the back moving axis 18d that cuts on the dish 18 and be attached thereto moving rod member, and the steel wire rope 18h that supplies pulling usefulness; Sector gear 18g, ratchet 18f with heighten 15 compositions of handle, it is characterized in that: the described preceding dead axle 18a and back dead axle 18c that is located on the vehicle frame; And to be located at the preceding moving axis 18b that cuts on the dish be four summits of parallelogram with back moving axis 18d, and its corresponding limit is parallel in twos and equal, so; Spur steel wire rope 18h through heightening handle 15 in any case; And through sector gear 18g, ratchet 18f comes to several gears of heightening, the line of preceding dead axle 18a on the vehicle frame and back dead axle 18c; Always with cut dish on preceding moving axis 18b be parallel with back moving axis 18d, thereby at the upper and lower translation that has fundamentally guaranteed to cut dish and operate as normal; But still will mix up the length of steel wire rope 18h when practical, and the allotment of sector gear 18g and ratchet 18f.Though wholely cut dish to be close at each gear be parallel, but that front and back have is mobile, be that the engine spindle 11 of ining succession with power belt 21 is the center of circle; What pass to first tool rest through belt 21 is radius and mobile apart from longitudinal projection; And belt 21 also has difference in height, is oblique, fortunately can also use.Can find out have multiple toothly because heighten the described sector gear 18g of gear from Fig. 6, existing preferred 10 teeth have 10 retainings, for example can cut height at 10-100mm and transfer; Or, divide several retainings preferably by customer requirement by 25-85mm commonly used.Referring to Figure 10, the power of the part of mowing passes to first tool rest from engine spindle 11 through belt 21, again through being with 23 to pass to second tool rest synchronously, so be convenient to drive hay knife 20 work; As improvement, referring to Figure 14 and Figure 16, described hay knife 20 is provided with two or more wind wings, twines grass in order to cut off, and on described wind wing, is provided with a plurality of cutting edge 20a, and the angle on the two sides of described cutting edge is not the right angle, is preferably less than the acute angle of 60 degree; Further as improving, described hay knife 20 is provided with a plurality of hexagonal holes, or further improves, and described hay knife 20 is provided with a plurality of as honeycomb or like the convex-concave of wedge 7b, is noise reduction so be beneficial to the flow through audio frequency of the little air-flow of high speed of cutter of change.

The described mowing graphical designs partly and preferred method of thinking that the mowing-apparatus of noise reduction is arranged is a significant contribution of the present invention.As previously mentioned, the one in front and one in back scheme of two cuttves of original sitting type mower, usefulness be two-sided V-belt, also used three regulating wheels, because of before and after cutter has, make and strengthen before and after cutting dish, cause the complete machine lengthening.Two cuttves of another kind of original sitting type mower, though be not tandem, because of two cuttves are reverse commentaries on classics, usefulness be more expensive two-sided synchronous band, also handy two synchronous tensions are taken turns, this makes the cost increasing.Can find with two cuttves, be one in front and one in back, do not make to cut the increasing of dish front and back, and oppositely do not change, and two-sided synchronous band that need not be more expensive, grass does not leak, and what way does the approach that cutter does not bump use? Answer is yes.Use the diagram optimum seeking method: two point widths of getting bar shaped cutter 20 are diameter D, by the gyroaxis of two cuttves be the belt wheel center (23a, 23b) apart from be A, 2 circles that draw, referring to Figure 25, the anterior part that two circles intersect representes that with the filling hachure width B is exactly the careless heavy swath B that does not leak; Be that diameter is justified again with A, the angle of circumference perseverance is the right angle, hangs down mutually because of establishing two cuttves, and is synchronous rotation, so two two limits that cutter is an angle of circumference can be drawn a plurality of angles of circumference in addition and come preferred.Formula is arranged: B=D-A.Referring again to Figure 26, change A gets belt wheel apart from A=0.618D by optimum seeking method 0.618 method earlier, and mapping strengthens A more gradually, is to the maximum near D; Shown in the figure heavy swath B of maximum and the minimum A when cutter bumps soon.The size that dish 18 is cut in the A influence.Again by formula:

Getting designed ratios N=A/D, generally speaking, is good at 74%-92%.

For example get 74%, the long D=530 of cutter, the cutter heart is apart from A=390; Swath F=D+A=530+390=920, a bit few, it is good a little louder to hope; Heavy swath B=D-A=140, enough.

As another embodiment, get designed ratios N=A/D=92%, the long D=530 of cutter, the cutter heart is apart from A=490; Then the swath F=D+A=530+490=1020 of mower is a little bigger, and is good; Heavy swath B=D-A=40, also available.

If get heavy swath B=D-A≤20, then might leak grass, because of grass be about rolling, and cut dish and overwhelm by askew letting, just have once in a while sometimes cut less than grass.When practical, the gap of cutting interior week of dish and point of a knife is preferably in more than the 3mm.

Because adopt PROE-WILDFIRE software, so variable is drawn easily, also available certainly other software.

Because the engine and the car cover that noise reduction is arranged that drive the forward band anechoic trap in the included vehicle frame top of mower of noise reduction measure and hydraulic stepless speed change are arranged,, saved the engine that draws again for seeing clearly to exempt to block like Fig. 4 and shown in Figure 10; The enlarged drawing of anechoic trap such as Figure 18 and shown in Figure 19; Anechoic trap provided by the invention contains hush tube 7 and tank 2; The lower bend of described hush tube 7 immerses in the described tank 2, so cooling effect is arranged.The effect of described tank is to kill two birds with one stone, except that the cooling, also with water for weight; Because of it is located at the mower front portion, so the counterweight effect is arranged.The water of tank faces the time spent and just adds, because of this disregards hauled weight; The water that adds does not add tankful, half has been arranged just.The lower end of the lower bend of described hush tube 7 and silencer outlet are joined.The characteristic of described tank 2 is, its side is provided with through hole, so that match with the lower bend of described hush tube 7; Its bottom is provided with the dewatering outlet.Described hush tube 7 is made up of pipe 7a and brace in the multistage and the outer tube that contains a plurality of wedge 7b arrays of micropore.Interior pipe is arranged in the outer tube, and the characteristic of described interior pipe 7a is to which is provided with cellular hexagon eyelet, or the polygon eyelet, or oval and oval eyelet; And the interior length of tube of multistage is that length is different and alternate; For example there is one section to be the long interior pipe of four/three-wavelength multiplying factor, then adjacent the is interior pipe of its quarter-wave multiplying factor only.The distribution of a plurality of eyelets that pipe 7a is provided with in addition, described be not be uniformly distributed with but density is arranged; The position that is positioned at 1/4th pipe ranges at the middle part on one section pipe of four/three-wavelength multiplying factor is closeer eyelet, is the eyelet of dredging on the pipe of remaining part; And the characteristic of its eyelet is hexagon eyelet or many prismatics; The characteristic of the interior pipe of the quarter-wave multiplying factor of described eye with holes is, the distribution of a plurality of eyelets that which is provided be not be uniformly distributed with but density is arranged; The position that is positioned at 3/8ths pipe ranges at the middle part on this section pipe is closeer eyelet, is the eyelet of dredging on the pipe of remaining part.Described eyelet is polygonal, and is preferably hexagonal; As improvement, perhaps the characteristic of its eyelet is many prismatics, or six prismatics, or pull the polygonal of golden flange a little; Perhaps the characteristic of its eyelet is the described wedge 7b that micropore is arranged, so have quarter-wave effect and dilatational wave effect and honeycomb effect.On the face of described outer tube 7b, be provided with the convexity of many drawings, being the polygonal pyramid shape is that multiaspect is cone-shaped, and particularly the hexagonal pyramid shape is called wedge 7b; The characteristic of described wedge is, its root from the punching press of metallic plate is a hexagon, from the root to the top, dwindles, and roughly its breadth depth ratio is one to one, or to one to one five.And the top of the wedge of the described hexagonal pyramid shape of each on the face of described hush tube is provided with micropore, and its approximate diameter is advisable at 0.1 to 0.5 millimeter.On the face of pipe 7a, as improvement, perhaps its eyelet also can change the convexity that is made as many drawings in described; Being the polygonal pyramid shape is that multiaspect is cone-shaped, and particularly the hexagonal pyramid shape also can be described as wedge; But its breadth depth ratio is an One to naught point eight, or to one. four to one.Many wedges are formed the how stupefied structure of wedge, and the hexagonal that its arrangement at each face is a honeycomb is polygonal, or at random, or oval, Long Circle, or irregular convex-concave shape; In hush tube or can partly be filled with the nonmetallic materials of metallic fiber or heatproof; Or can partly be filled with anti-middle warm sound-absorbing material such as sound-absorbing porous material, or flexible material and film material.Or attach, or directly mold pressing, or add azoic foaming agent bi-component make in mould outer hard in and solidify.Described porous material such as fiber-like, the foam class, particulate species, single with good, more or less mixing application is good.Also usable fibers class such as rock wool, or glass fiber, or mineral wool super glass wool particularly; Or use the foam class, lean on the warmware place to want fireproof; Or with particulate species such as expanded perlite, porous clay brick, and the fabric of heatproof, felt is filled or is attached; So be beneficial to the improved performance index, and make comprehensive composition reach noise reduction purpose preferably.Multiple material has complementary low-and high-frequency sound absorption usefulness.Many wedges have been added area of dissipation; Particularly many wedges that micropore is arranged not only have the micropore effect of noise reduction, and the latent effectiveness of hypereccrisia gas-liquid is arranged.As extending, but many wedges also reverse-drawing promptly outwardly to add area of dissipation.Between silencer and engine, also can assemble the pad of not only making heat insulating mattress but also making beam.Between the outlet of silencer and described hush tube 7, also can assemble the pad of not only making heat insulating mattress but also making beam.Anechoic trap provided by the invention is provided with numerous large-area wedge zones, contains numerous wedges that micropore is arranged, and has the wedge resistance to fall effect and micropore effect.The beneficial effect that anechoic trap provided by the invention causes is: the combination property that increases noise elimination effect and lifting silencer is as inserting loss, sound transmission loss, noise abatement amount and attenuation, and cooling.As a kind of inventive concept such as the ghost pacing up and down in ground: if with thick soft foamed plastics, or as improving, fully utilize above-mentioned various noise elimination damping materials and regional with numerous large-area wedges; Be located at mowing table 18, referring to Figure 21, and mower many places such as headstock hood 1; Referring to Figure 11, like vehicle body 10c, referring to Figure 12; The vehicle seat that noise reduction is arranged after also having the vehicle frame upper center partially, and there is the receipts grass case of noise reduction at the car rear, is expected to receive the effect of security protection and noise abatement.In addition, be saddle horse operator's personal protection, annex of the present invention is furnished with earplug, and anti-sound is cotton, earmuff and anti-sound head helmet.Also be provided with the artificial foot protection plate that contains turning joint in both sides, mower middle part.The described artificial foot protection plate that contains turning joint that is provided with in both sides, mower middle part is made up of protective plate and turning joint; It is characterized in that described protective plate is the sound absorption material of selecting for use, and a left side, right each one; But in the time will laying side Lysimachia sikokiana plate on the right side sometimes, just an on the left side is laid the artificial foot protection plate; Described protective plate profile preferably sufficient shape the bigger waveform in two promptly arranged, so strengthened caution association and artistic image that foot is careful; Described protective plate preferably uses soft but not too soft shore hardness at 65 to 95 materials rubber for example; Polyurethane or polyvinyl chloride are made main sheet material, and its usefulness is to discharge water when putting down work, for example are placed on when cutting dish 18 both sides; Adagio more is difficult for hindering grass, and soft board is more convenient for casing.Described protective plate is the material of available hard also.Described protection edges of boards are provided with mobilizable hinge, do not limit one or more or use flexible material, are aided with stop before going too far determinate spacing again, if described protective plate is decontroled can work and change get on to be convenient to case just passable.As extending or improving, described protective plate also can be made as dismountable, puts during work, takes off when not working.In order to prevent trouble before it happens, put prevention first, guarantee that the complete machine of a large amount of shipment all can detect through false pin.Described protective plate also can be used on other place of fuselage, and for example the top of two trailing wheels is protected.As another embodiment, also available acoustic material is processed car load and is not open, but on the top is arranged, or totally-enclosed car type shines in order to retaining, or full sound insulation.The head fuselage everywhere, all available foamed material, sound-absorbing porous material is like foam cement or foamed plastic, or flexible material and film material, or double-deck blowing part; Or attach, or directly mold pressing, or add azoic foaming agent bi-component in mould and solidify to foam in hard formation outside; Or double-deck various big of being blow molded into large-area honeycomb and wedge appearance convex concave, like head and fuselage.To sum up, so the beneficial effect of various noise abatement measures is arranged: not only utilize the impedance of sound-absorbing material different characteristic, reduce reflected sound, and utilize aperture low frequency diffraction shadow zone principle, establish sound barrier and weaken high-frequency noise.It is many that described earplug uses the pre-mould mode earplug, is molded as certain geometry with flexible plastic or soft rubber; Or use the foamed plastics earplug; So certain sound insulation property and comfortableness are arranged.Again because described anti-sound cotton is to handle and process through chemical tendering with super glass wool, the most handy 1-3 micron diameter be good; And process the fritter taper, so be convenient to fill in one's ear; The cotton sound insulation of anti-sound is more effective than common cotton, and sound-insulation value improves along with the increase of noise frequency, thus more effective to isolated high-frequency noise, use anti-sound cotton, language is got in touch does not only have obstruction, and speech articulation is increased.Described earmuff is the earflap device of earphone class, or uses the music earmuff, so can increase the enjoyment of work.Described anti-sound head helmet is the motorcycle helmet class, so also have the security effect.

Again because the vehicle seat that noise reduction arranged of described vehicle frame upper center after partially is also characteristic: vehicle seat is surrounded by thick noise reduction foamed material, and is removable before and after the vehicle seat; Vehicle seat is provided with the people to be connected when sitting down, when the people leaves with regard to obstructed limit protection switch; Or non-contacting human inductor is a sensor, so protective effect is also arranged.There is the receipts grass case 10 of noise reduction at described car rear, is provided with 2 hooks 17, it is characterized in that S shape, has on the hanger 16 of pin so be convenient to hang over 2 of being located at behind the vehicle frame, and pin is to be stuck in versatilely in the S shape, becomes reconciled with grass and gets so be convenient to artificial gyration.The foregoing single face that two cuttves are driven in the same way is with synchronously, in the workshop, finds too tightly, and does not install on the production line fortunately; Like korean pine, be prone to leapfrog once in a while again and asynchronous.As improvement, be with 23 good installations synchronously in order to make the single face that drives two cuttves in the same way, referring to Figure 22, be equipped with regulating wheel 23c, described regulating wheel 23c and single face contacts with 23 the no flank of tooth synchronously, so described regulating wheel is the anodontia wheel of justifying; Regulating wheel is contained on the tensioning support 23d; Tensioning support 23d is a balance pivot and adjustable with fixing bolt 23e versatilely; So can infer by adjusting bolt 23f on the fixing minor adjustment frame 23h and setting nut 23g, thus made things convenient for installation, and eliminated asynchrony phenomenon.

As improvement, process car load with acoustic material and not to be open, but on the top is arranged, or totally-enclosed car type, or make the large-scale integral car can be beneficial to that retaining shines or full sound insulation; Or with a few bulk splicings.The head fuselage everywhere or whole or piece together all right.Figure 11 and headstock hood 1 and vehicle body 10c shown in Figure 12 also can or be put in order or assembly.Two major parts before and after for example vehicle body 10c can be divided into, the back is a bulk of to be divided and can plug together and receive the Shang Dagai of careless case.The head fuselage everywhere or whole or piece together all right anti-noise structure that also mainly is meant; Like the molded head fuselage and the ceding of Taiwan that is stretched as honeycomb wedge convex concave of steel plate; Or iron plate attaches big of the honeycomb wedge convex concave of injection molded, joins described acoustic material such as foamed material again, sound-absorbing porous material; Foam cement or foamed plastic, or flexible material and film material; Or attach, or directly mold pressing.Or add azoic foaming agent bi-component in mould, in hard outside forming, foam and the structure like portable refrigerator of curing; Or double-deck various big blowing part that is blow molded into large-area honeycomb and wedge appearance convex concave, like head and fuselage, attach thick foamed plastic again.To sum up, so the beneficial effect of various noise abatement measures is arranged: not only utilize the impedance of sound-absorbing material different characteristic, reduce reflected sound, and utilize aperture low frequency diffraction shadow zone principle, establish sound barrier and weaken high-frequency noise.The connecting place of the airstrainer 4 that the headstock hood 1 of noise reduction is arranged and eliminate the noise has two car lights 3, should notice that sticking seam does not leak very much sound, more will note temperature rise; If with lamp is the LCD luminous tube, then temperature rise is out of question.

Claims (7)

1. drive mower; Comprise the propons that turns to that connects two front-wheels, but connect the driving rear axle of the band hydraulic stepless speed change of two trailing wheels, the vehicle frame of the band dual fail-safe thick stick of four-wheel top; The mowing-apparatus of vehicle frame below; The engine of the band anechoic trap that the vehicle frame top is forward and headstock hood (1) and the airstrainer (4) of eliminating the noise, the vehicle seat after the vehicle frame upper center is inclined to one side, and the receipts at car rear grass case; The propons that turns to of two front-wheels of described connection; Be included in the mechanism that turns to through known parallelogram between two front-wheels (6); The left cambered axle and the right cambered axle that promptly connect through a connecting rod; The end that arm is fixed on control lever is saved through one in said left cambered axle upper end, and the other end of control lever then is connected on the gear and fluted disc (8a) that has steering wheel (8); But described driving rear axle (24); Comprise two semiaxis that are located between two rear wheels, between two semiaxis, be provided with differential mechanism, differential mechanism upwards connects the stepless speed changing mechanism and the brake device of second plunger pump (24c) and pilot operated valve device group successively thus; The clutch that connects first plunger pump (24b) again through the pilot operated valve device group; Via the belt (22) of the belt pulley on the turning cylinder of first plunger pump, transmit the power of engine spindle (11) again, said differential mechanism comprises a pair of axle shaft gear; Planetary gear assembly between the axle shaft gear, and the change-speed gearing (24d) of second plunger pump; The star-wheel of described planetary gear assembly (24h) is with 2 star-wheels; The planetary gear assembly is erected on the gear wheel (24g); Described gear wheel (24g) and intermediate speed pinion (24f) engagement; Described intermediate speed pinion (24f) is coaxial and connect firmly with idler gear (24e); Described idler gear (24e) meshes with the change-speed gearing (24d) of second plunger pump (24c); The coaxial brake disc that is provided with brake device of the change-speed gearing of described second plunger pump (24c); On the back axle (24) nearby of brake disc, be provided with friction plate; Brake bar and spring and form brake device, its foot brake device (12) with the vehicle frame middle part links to each other with Hand brake apparatus (13); On the pilot operated valve device group between second plunger pump (24c) and first plunger pump (24b); Be provided with gear shifting rod; Regulate and control the oil inlet and outlet on the pilot operated valve device group on the one hand; The angle that changes the plunger head inclined-plane of first plunger pump (24b) on the other hand changes output speed, and with the forward gear (14) at vehicle frame middle part with retreat retaining (14b) and link to each other, with the composition stepless speed changing mechanism; When neutral, the angle on the plunger head inclined-plane of first plunger pump (24b) is zero, and first plunger pump (24b) has played the effect of clutch; And second plunger pump (24c) here is actually when oil motor and uses, and it drives change-speed gearing (24d) and series of gears engagement, thereby drives two semiaxis and trailing wheel (6b); On the pilot operated valve device group between second plunger pump (24c) and first plunger pump (24b), also be provided with the Parking bar, the interior hydraulic fluid port of regulation and control pilot operated valve device group, when pulling the Parking position, hydraulic fluid port in the D shape bar of the inside of Parking bar hinders; But be provided with inlet valve (24k) with oil box outside being communicated with in described driving rear axle (24) inside; But in described driving rear axle (24), be provided with permanent magnet (24j); It is characterized in that: described the place ahead that drives the vehicle frame of mower is provided with bumper; The mowing-apparatus of described vehicle frame below comprises and highly regulates part and mowing part; Highly regulate part,, and be located at preceding moving axis (18b) and the back moving axis (18d) that cuts on the dish (18) and be attached thereto moving rod member by the preceding dead axle (18a) and the back dead axle (18c) that are located on the vehicle frame; And the steel wire rope (18h) that supplies pulling usefulness; Sector gear (18g), ratchet (18f) and heighten handle (15) and form spurs steel wire rope (18h) through heightening handle (15); And through sector gear (18g), ratchet (18f) is heightened gear; The mowing-apparatus of described vehicle frame below, it contains the driving belt (21) of engine to cutter, and first tool rest is with (23), second tool rest and hay knife (20) synchronously; Mowing part required drive is from engine spindle (11), passes to first tool rest through described belt (21), passes to second tool rest through described synchronous band (23) again, so that drive hay knife (20) work.

2. the mower that drives according to claim 1; Contain described hay knife (20); It is characterized in that: which is provided with a plurality of wind wings, and on described wind wing, be provided with a plurality of wind wing cutting edges (20a), the angle on the two sides of described wind wing cutting edge is not the right angle; Be less than the acute angle of 60 degree, twine grass in order to cut off.

3. the mower that drives according to claim 1; Contain described hay knife (20); It is characterized in that: which is provided with a plurality of hexagonal holes, or described hay knife (20) is provided with the convex-concave of a plurality of wedges (7b), in order to flow through audio frequency and the noise reduction of the little air-flow of high speed of cutter of change.

4. the mower that drives according to claim 1 contains the vehicle seat of vehicle frame upper center after partially, it is characterized in that: vehicle seat is provided with the people to be connected when sitting down, and with regard to obstructed limit protection switch, or non-contacting human inductor was a sensor when people left.

5. the mower that drives according to claim 1; The receipts grass case that contains the car rear; It is characterized in that: the careless case of described receipts contains S-hook (17); The S-hook (17) of the careless case of described receipts is characterized in that it is a S shape, and it hangs over 2 of being located at behind the vehicle frame has on the hanger (16) of pin, and pin is to be stuck in versatilely in the S shape.

6. the mower that drives according to claim 1 contains the vehicle frame of the band dual fail-safe thick stick of four-wheel top, and it is characterized in that: described bumper is parallel bars; Or three, or more, and every thick stick is that two is curved; The pipe of middle straight or square tube, and have two place's stent support at least.

7. the mower that drives according to claim 1 contains the mowing-apparatus of vehicle frame below, comprises and highly regulating partly and the mowing part; Described height is regulated part, by the preceding dead axle (18a) and the back dead axle (18c) that are located on the vehicle frame, and is located at preceding moving axis (18b) and the back moving axis (18d) that cuts on the dish (18) and is attached thereto moving rod member; And the steel wire rope (18h) that supplies pulling usefulness; Sector gear (18g), ratchet (18f) and heighten handle (15) and form is characterized in that: press parallelogram principle; Described preceding dead axle (18a) and the back dead axle (18c) that is located on the vehicle frame; And being located at the preceding moving axis (18b) that cuts on the dish and back moving axis (18d) is four summits of parallelogram, its corresponding limit is parallel in twos and equal, spurs steel wire rope (18h) through heightening handle (15); And through sector gear (18g), ratchet (18f) is heightened gear.

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