CN1692692A - Disposable magnetic bedknife - Google Patents

Abstract

A reel mower assembly including at least one magnetized backing plate mounted to a frame of a greensmower, a bedknife retainer magnetically retained in proximity to the backing in an operating position, and a bedknife interposed between the backing and the bedknife retainer such that the bedknife is oriented in cutting relationship with the reel.

Description

Disposable magnetic bedknife

Related application

The application requires to enjoy the 60/568th, No. 124 U.S. Provisional Application No. of application on May 4th, 2004.The specification of above-mentioned application is merged in this and sentences for referencial use.

Technical field

The present invention relates to wheeled mower, especially the disposable magnetic bedknife of wheeled mower.

Background technology

Wheeled mower uses shear action but not tears and is used for cutting grass and similar plant.The mowing quality of this wheeled mower is higher usually, but needs more the maintenance than rotary mower.The person in charge of golf course likes this mower, because in these places, and for example on the golf greenery patches, importantly Cao outward appearance and health.

In typical wheeled mower assembly, the connector that is commonly called end rod or supporter is connected on the wheel in the mode of rigidity, and removable bed plate is connected on the end rod.Bed plate and wheel shaft keeping parallelism, and be positioned near the flywheel knife, so wheel and bed plate can be realized high-quality shear action.Usually, governor motion allows the wheel motion relatively of end rod, so bed plate can move to the wheel that rotates and becomes suitable relation.

Traditionally, bed plate is connected on the end rod with many screws, and these screws pass the hole on the bed plate, and is meshed with screwed hole on the end rod.10 of common uses of this traditional scheme even more screw are connected to bed plate on the end rod.Like this, changing bed plate just need take off these screws, replacement bed plate and with screw new bed plate is fixed on the end rod.Therefore usually, bed plate is connected to the bottom side of end rod, mower must be lifted enough high, perhaps its part is taken apart, thereby reaches the bottom side of wheeled mower assembly, to take off screw and bed plate.The typical used wheeled mower device of golf course may use a plurality of wheeled mower assemblies.Change the bed plate on the wheeled mower, especially have the mower of a plurality of wheels, need quite long hand labour time and corresponding downtime.

When bed plate was fixed on the end rod by screw, the stone or the similar fragment that enter in the mower can be stuck between the fixing bed plate and wheel, and damage one or more parts of wheeled mower assembly.When running into the barrier that is buried basically, bed plate also can be destroyed.Owing to will satisfy the required close tolerance of normal operation, so the damage of bed plate can bring bigger economic loss, and change bed plate can be very bothersome.In addition, bed plate is used manyly more, will be blunt more.Grinding the blade that makes new advances on bed plate also needs time and special technology, and this has also increased maintenance cost.

Summary of the invention

The application relates to a kind of wheeled mower assembly, it comprise rotation be installed to wheeled mower on the frame, rely on magnetic to remain near the bed plate retainer the supporter when being used to make wheel around driver that wheel shaft rotate, at least one rack-mounted magnetized supporter, at operating position and be inserted in supporter and the bed plate retainer between bed plate, bed plate is oriented to wheel and becomes suitable cutting to concern like this.In addition, the application also relates to a kind of magnetic that relies on and remains near the supporter bed plate retainer when operating position, and this bed plate retainer is loaded with a bed plate at least.The wheeled mower assembly also comprises a geared assembly, it can prevent that the relative supporter of bed plate from sliding, and when retainer during at operating position, if be applied to gravitation on the retainer along deviating from the separating force that the supporter direction is applied on the retainer greater than supporter, it allows retainer to leave supporter again so.

The application also relates to a kind of wheeled mower assembly, and it comprises frame, be connected to the main thruster that is used for mobile mower on the frame, by frame support and be used to make power source, the rotation of main thruster work to be installed to wheeled mower on the frame, be used to make driver that wheel rotates around wheel shaft and at least one to be installed to magnetization supporter on the frame.Rely on magnetic to remain near the bed plate retainer the supporter when this wheeled mower assembly also is included in operating position and be inserted in supporter and the bed plate retainer between bed plate, bed plate is oriented to wheel and becomes suitable cutting to concern like this.In addition, this wheeled mower assembly also comprises the bed plate that at least one handle is supported by the bed plate retainer.This wheeled mower assembly also comprises a geared assembly, it can prevent that the relative supporter of retainer from sliding, and when retainer during at operating position, if be applied to gravitation on the retainer along deviating from the separating force that the retainer direction is applied on the retainer greater than supporter, it allows supporter to leave magnet again so.

By following detailed description, can also understand other application of the present invention.Although detailed specification and specific example have briefly explained various embodiment of the present invention, be understood that they just are used for explaining but not limit the scope of the invention.

Description of drawings

Can clearerly understand the application by detailed specification and accompanying drawing, wherein:

Fig. 1 is the decomposition diagram of the hand steered wheeled mower installed according to each embodiment;

Fig. 2 is the decomposition diagram of the wheeled mower assembly of constructing according to each embodiment;

Fig. 3 is the perspective view at the top of the magnetic bed bar of constructing according to each embodiment;

Fig. 4 is the perspective view of the bottom side of the end shown in Figure 3 rod;

Fig. 5 is the perspective view that is connected to the bed plate on the magnetic bed bar shown in Figure 3;

Fig. 6 is a bed plate shown in Figure 5 schematic diagram when being positioned at operating position on magnetic bed bar shown in Figure 3;

Fig. 7 is the schematic diagram of another bed plate when being positioned at operating position on magnetic bed bar shown in Figure 3;

Fig. 8 is the plane of the bed plate made according to first manufacture method;

Fig. 9 is the cross-sectional view of bed plate shown in Figure 8;

Figure 10 is the plane that is used to form the blank of bed plate shown in Figure 8;

Figure 11 is a bed plate shown in Figure 8 through the plane behind the grinding operation repeatedly;

Figure 12 is the cross-sectional view of bed plate shown in Figure 11;

Figure 13 is a bed plate shown in Figure 11 through the plane behind the grinding operation repeatedly;

Figure 14 is the cross-sectional view of bed plate shown in Figure 13;

Figure 15 is the plane of the bed plate made according to second manufacture method;

Figure 16 is the cross-sectional view of bed plate shown in Figure 15.

Embodiment

Below to just indicative on the illustrative in nature of each embodiment, rather than in order to limit each embodiment described here, its purposes or usage.

Fig. 1 has showed the primary element of the mower 10 of constructing according to each embodiment.Shown mower 10 is a walk-behind greensmower, but mower 10 also can be any wheeled mower, and it comprises one or more wheeled mowing equipment.Mower 10 comprises cutter unit 12, and this cutter unit 12 comprises power source or the engine 15 that is attached on the frame 16 and is attached to handle 14 on the frame 16.Carry-over pinch rolls 18 rotation is attached on the frame 16, and driven nature be connected on the engine 15.Cutter unit 12 also comprises wheeled mower assembly 20, and its details are shown among Fig. 2-5.Transmission device 24 comprises a plurality of sprocket wheels 25, and they are delivered to carry-over pinch rolls 18 with the rotation output torque of engine 15 selectively.Transmission device 24 comprises the clutch 26 between engine 15 and transmission device 24.Clutch 26 is operated under engagement or Disconnected mode, is used for selectively power being delivered to carry-over pinch rolls 18 from engine 15.Wheel 28 is incorporated on the carry-over pinch rolls 18, and also launched machine 15 drives selectively, thereby for translation walk-behind greensmower 10 provides power, this normally carries out during the translation pattern.

Fig. 2 has schematically showed the major part of wheeled mower assembly 20.Wheeled mower assembly 20 comprises and being installed on the frame 16 and can counterrotating mowing wheel 30.Wheeled mower assembly 20 can be used on the various forms of mowers, comprises riding mower and walk-behind greensmower.Driver makes wheel 30 rotate around wheel shaft A.Magnetic bed bar 32 is connected on the frame 16, and bed plate 34 relies on magnetic to be connected on the magnetic bed bar 32.Usually, wheel 30 also comprises governor motion, is used to change the relative position between magnetic bed bar 32 and the wheel 30, and this is for suitable cutting relation is provided between bed plate 34 and wheel 30.

Fig. 3 and 4 has showed some embodiment of the magnetic bed bar 32 of constructing according to some embodiment.Magnetic bed bar 32 comprises a plurality of magnets 36.Magnet 36 is embedded in the magnetic bed bar 32, and provides concordant substantially surface to connect bed plate 34.Bed plate 34 relies on magnetic to be maintained on the magnet 36, and holds it in operating position with alignment pin 40.

Fig. 5 has showed the bed plate 34 of constructing according to some embodiment.Bed plate 34 comprises the first blade 34A and the second blade 34B.Blade 34A and 34B on the relative side, only allow a blade 34A to be in operating position in bed plate 34 at any time.When blade 34A rust, can overturn bed plate 34 so that another blade 34B towards operative orientation.As two blade 34A and 34B all during rust, can take off, abandon and change bed plate 34.Bed plate 34 also comprises and is used for the groove 42 that is meshed with the alignment pin 40 of magnetic bed bar 32.When alignment pin 40 and groove 42 fully on time, bed plate 34 just can not skid off the position relative with magnetic bed bar 32.

Fig. 6 has showed some embodiment of magnetic bedknife assembly.Bed plate 34 relies on magnetic to be connected on the magnetic bed bar 32.The alignment pin 40 of end rod 32 and the groove 42 of bed plate 34 and 44 engagements of magnetic support plate, thus guarantee that suitable cutting relation is arranged between bed plate 34 and the wheel 30.Magnetic support plate 44 also provides extra polarity between magnetic bed bar 32 and bed plate 34, thereby prevents that bed plate 34 from disconnecting from end rod 32.

In some purposes, the selection of magnetic support plate 44 can influence the operation of wheeled mower assembly 20.According to the length and the density of grass, may need the magnetic support plate 44 of varying strength.For example, shorter when grass, when unlikely damaging wheeled mower assembly 20, available more weak magnetic support plate 44 cuts the green grass on the golf course.Cutting the bigger grass of density may need extra magnetic force to disconnect from magnetic bed bar 32 to prevent bed plate 34.This just needs stronger magnetic support plate 44.Although extra magnetic force is provided by magnetic support plate 44, magnetic force still allows bed plate 34 to disconnect to prevent to damage wheeled mower assembly 20 from magnetic bed bar 32.Magnetic support plate 44 can be made with iron and steel, and the flexible bigger material of bed plate 34 usefulness such as tempering spring steel is made.

As shown in Figure 6, bed plate 34 can form with a block of material.In addition, Fig. 7 has showed second kind of structure of bed plate assembly among some embodiment.Fig. 7 comprises that dependence magnetic is connected to the magnetic bed bar 32 on the magnetic support plate 44.The alignment pin 40 of magnetic bed bar 32 and groove 42 engagements that are positioned on the magnetic support plate 44.30 one-tenth suitable cutting relations of bed plate 46A and 46B and wheel are guaranteed in this engagement.In second structure, a pair of bed plate 46A is incorporated on the relative two ends of gripper shoe 44 with 46B.Can adopt any associated methods that bed plate 46A and 46B are fastened on the magnetic support plate 44, for example gluing or riveted joint.

As mentioned above, the first and second bed plate 46A and 46B are incorporated on the magnetic support plate 44.It is necessary having only a bed plate 46A, still, if the first bed plate 46A rust, the magnetic support of can overturning plate 44 so that the second bed plate 46B towards direction of operating, thereby blade is provided.Magnetic support plate 44 can be made with iron and steel, and the first and second bed plate 46A and 46B use such as the flexible bigger material of tempering spring steel and make.

Embodiment described here can have multiple implementation, comprise and make described new wheeled cutting assembly as some embodiment, perhaps produce the kit of rod of the improved end or frames, these rods of improved end or frame kit allow the magnetic bedknife method of attachment of each embodiment to implement in existing mower.

In addition, the magnetic bedknife 18 of each embodiment can be made according to each manufacture method.More particularly, shown in Fig. 8-14, bed plate 18 can be used the carbon steel manufacturing, particularly AISI 1566 hot rolling acid-cleaning oil immersion steel or other suitable materials, and it generally is marked as 100.At the operating position place of as shown in Figure 6 end rod 16, carbon steel bed plate 100 is the same with bed plate 18, also relies on magnetic to be maintained on the magnet 20, so bed plate 100 is oriented to and 2 one-tenth suitable cuttings relations of wheel in the mode identical with bed plate 18.

Below, the special manufacturing step that goes through carbon steel bed plate 100 with reference to Fig. 8-14.Flat blank 101 at first is cut into suitable length.Then, make flat blank 101 by stamping machine or press, stamping machine or press at first flatten and stretching flat blank 101, apply bending force then on blank.Although in wheeled mower, this shape can change, and bed plate 100 present shapes comprise the knife edge part 104 that is generally flat mounting portion 102 and upset.As shown in Figure 9, originally the knife edge part 104 of upset comprises the radius part 106 that connects end 108 and mounting portion 102.Specifically, owing to passed through the punching course that forms carbon steel, so radius part 106 comprises outer surface 110, and as shown in Figure 9, outer surface 110 extends below the lower surface 112 of mounting portion 102.Those skilled in the art are understood that, this situation of the outer surface 110 that extends below lower surface 112 is nonconforming, because it may hinder normal mowing, and/or may touch ground.In addition, this situation may also can limit the minimal cut natural plant height degree of wheeled mower.Therefore, preferably grind off this outer surface 110 to form a common uncrossed lower surface.

Shown in Figure 11 and 12, shown bed plate 100 is finished by a series of grinding operations, and these grinding operations are enough to remove outer surface 110 and form a plurality of to generate final required shape.Specifically, as shown in figure 12, bed plate 100 comprises blunt cut surface 114, and 102 lower surface 112 extends upward from the mounting portion for it.Blunt cut surface 114 preferably extends upward for example 5 ° with the relative angle that is about 3-8 ° from lower surface 112.Blunt cut surface 114 carries out the transition to super blunt cut surface 116, and the latter further extends upward with the bigger slope that is about 8 ° with respect to lower surface 112.Bed plate 100 comprises front 118 and end face 120, and front 118 is usually perpendicular to lower surface 112, and for example both angles are about 90 °; End face 120 relative lower surfaces 112 are about 5-15 °, for example 8-10 °.Front 118 and end face 120 intersect at 121 places at the edge.Blunt cut surface 114, super blunt cut surface 116, front 118 and end face 120 all will form by various grinding operations, and these action need bed plaves 100 pass through milling machine.After these grinding operations, bed plate 100 is heat-treated so that enough hardness to be provided, thereby reduce the wearing and tearing of bed plate 100 in operating process.

Referring now to Figure 11,, after the thermal treatment, also on the mounting portion 102 of bed plate 100, form a pair of through hole 122.In manufacture process, this is used for locating bed plate 100 at grinding operation subsequently to hole 122.In addition, also be formed with second pair of hole 124 on the mounting portion 102.Similar to hole 36, the size in this second pair of hole 124 is processed to be suitable for holding the bolt 26 on the end rod 16.

At last, shown in Figure 13 and 14, finish the last grinding of bed plate 100.Specifically, by the grinding operation after the thermal treatment, end face 120 is finally ground off, so the gradient of its relative lower surface is about 3-8 °, for example is about 5.5 °.Similarly, front 118 also is worn away, thereby generates blade 126 to replace edge 121.The certain slope of blade 126 depends on the required cutting configuration with respect to wheel 2.

Although bed plate 100 provides a plurality of favourable cutting characteristic and wearabilities, may cause its manufacturing cost higher, and the process complexity.Therefore, some embodiment provide a kind of like this method of making bed plate, and it can cancel many grinding steps, thermal treatment and complicated structure.

Referring to Figure 15 and 16, the technology that shown bed plate 200 usefulness are simplified is made.More particularly, bed plate 200 is made by spring steel, the rustless blue-finished spring steel ASTM A682 of C1095 especially, and it is hardened to the minimum Rockwell hardness value that is about 47C.During operating position on bed plate 16 shown in Figure 6, spring steel bed plate 200 is similar with 100 to bed plate 18, also relies on magnetic to be maintained on the magnet 20, so bed plate 200 is oriented to and 2 one-tenth suitable cuttings relations of wheel in the mode identical with bed plate 18.

Still, go through the manufacturing step of spring steel bed plate 200 below referring to Figure 15 and 16.Be understood that compare with bed plate 100, the manufacturing step of spring steel bed plate 200 is greatly simplified, this makes makes complexity and manufacturing cost reduction.Be generally flat blank (not shown) and be transported in the cold roll forming machine, this cold roll forming machine applies bending force to blank.Flat blank is preferably a coil spring steel, can make its shaping quickly and easily with continuous, unremitting process.Shown in Figure 15 and 16, blank is shaped as required shape by a series of rollers.Because spring steel character, this forming technology may need the crooked and overbending operation of one or many, to generate required net shape.

Although net shape can change in the design of wheeled mower, bed plate 200 present shapes comprise the knife edge part 204 that is generally flat mounting portion 202 and upset.As shown in figure 16, the knife edge part 204 of upset 202 extends upward from the mounting portion to be about 9 ° relative angle.From figure, be understood that, different with bed plate 100---bed plate 100 is included in the outstanding outer surface 110 of the downward extension of the radius part 106 that forms in the punching course, the cold roll forming technology of some embodiment does not produce this effect, does not therefore just need to grind blunt cutting surface 114 and super blunt cutting surface 116.Like this, the use of spring steel allows to use roll forming rather than punching press, therefore cuts the surface to form except final grinding front 218, and many grinding operations all are cancelled.

As shown in figure 15, bed plate 200 also comprises a pair of hole 224 that forms by mounting portion 102.Similar to hole 36, this size to hole 224 is processed to be suitable for holding the bolt 26 on the end rod 16.

Spring steel bed plate 200 and traditional screw fixedly bed plate or even bed plate 100 are compared, and have many advantages.Particularly, bed plate 200 is made by spring steel, therefore can make bed plate according to simple cold roll forming technology.When making magnetic bedknife, also do not use this technology in the past, it has simplified manufacturing process greatly, therefore need not complicated flattening, stretching, be shaped, grind and heat treatment operation.

To only being indicative on the illustrative in nature of embodiment, the change that does not exceed each embodiment main points so all will covered in the scope of each embodiment.Should not think that these changes have exceeded the spirit and scope of the present invention.

Claims (46)

1, a kind of wheeled mower assembly comprises:

Rotation is installed to the wheeled mower on the frame;

Be used to driver that wheel is rotated around wheel shaft;

At least one rack-mounted magnetized supporter;

When operating position, rely on magnetic to remain near the supporter bed plate retainer;

Be inserted in the bed plate between supporter and the bed plate retainer, become cutting to concern so that bed plate is oriented to wheel; And

Geared assembly is used to prevent that bed plate from sliding with respect to supporter, when retainer during at operating position, if be applied to gravitation on the retainer along deviating from the separating force that the supporter direction is applied on the retainer greater than supporter, allows retainer to leave bed plate.

2, wheeled mower assembly as claimed in claim 1, wherein, geared assembly further comprises a plurality of setting elements that are formed on this supporter.

3, wheeled mower assembly as claimed in claim 2, wherein, geared assembly further comprises a plurality of holes that are formed on the retainer, is used to make setting element to be engaged to supporter.

4, wheeled mower assembly as claimed in claim 1, wherein, geared assembly further comprises a plurality of holes that are formed on the retainer, is used to make the engagement of setting element and supporter.

5, wheeled mower assembly as claimed in claim 1, wherein, bed plate has first side and second side, and each side all is mounted so that cutting function to be provided, and bed plate can be directed, so that the side in first side and second side provides cutting function.

6, wheeled mower assembly as claimed in claim 1, wherein, bed plate is by making than the flexible bigger material of retainer.

7, wheeled mower assembly as claimed in claim 1, wherein, bed plate is the tempering spring steel.

8, wheeled mower assembly as claimed in claim 1, wherein, different according to selected at least one retainer and supporter, the gravitation between supporter and the retainer can change.

9, wheeled mower assembly as claimed in claim 1, wherein, bed plate can be changed.

10, wheeled mower assembly as claimed in claim 1, wherein, retainer is selected from a plurality of retainers of different-thickness.

11, wheeled mower assembly as claimed in claim 1 wherein, further comprises the multiplier or the walk-behind greensmower that support the wheeled mower assembly.

12, a kind of wheeled mower assembly comprises:

Rotation is installed to the wheeled mower on the frame;

Be used to driver that wheel is rotated around wheel shaft;

At least one rack-mounted magnetized supporter;

When operating position, rely on magnetic to remain near the supporter bed plate retainer;

Bed plate by the support of bed plate retainer; And

Geared assembly is used to prevent that the relative supporter of retainer from sliding, and when retainer during at operating position, if be applied to gravitation on the retainer along deviating from the separating force that the retainer direction is applied on the retainer greater than supporter, allows supporter to leave magnet.

13, wheeled mower assembly as claimed in claim 12, wherein, bed plate is glued on the retainer.

14, wheeled mower assembly as claimed in claim 12, wherein, bed plate is riveted on the retainer.

15, wheeled mower assembly as claimed in claim 12 wherein, further comprises second bed plate that is supported on the retainer, and second bed plate is relative with first bed plate.

16, wheeled mower assembly as claimed in claim 15, wherein, bed plate is glued on the retainer.

17, wheeled mower assembly as claimed in claim 15, wherein, bed plate is riveted on the retainer.

18, wheeled mower assembly as claimed in claim 15, wherein, geared assembly further comprises a plurality of holes that are formed on the retainer, is used to make the engagement of setting element and supporter.

19, wheeled mower assembly as claimed in claim 12, wherein, geared assembly further comprises a plurality of holes that are formed on the retainer, is used to make the engagement of setting element and supporter.

20, wheeled mower assembly as claimed in claim 15, wherein, bed plate has first side and second side, and each side all is mounted so that cutting function to be provided, and bed plate can be directed, so that the side in first side and second side provides cutting function.

21, wheeled mower assembly as claimed in claim 15, wherein, bed plate is the tempering spring steel.

22, wheeled mower assembly as claimed in claim 15 wherein, further comprises the multiplier or the walk-behind greensmower that support the wheeled mower assembly.

23, a kind of wheeled mower assembly comprises:

Frame;

Be connected to the main thruster that is used for mobile mower on the frame;

By frame support and be used to make the power source of main thruster work;

Rotation is installed to the wheeled mower on the frame;

Be used to driver that wheel is rotated around wheel shaft;

At least one is installed to the magnetized supporter on the frame;

When operating position, rely on magnetic to remain near the supporter bed plate retainer; And

Be inserted in the bed plate between supporter and the bed plate retainer, become suitable cutting to concern so that bed plate is oriented to wheel.

24, wheeled mower assembly as claimed in claim 1, wherein, further comprise geared assembly, be used to prevent that the relative supporter of retainer from sliding, when retainer during at operating position, if be applied to gravitation on the retainer along deviating from the separating force that the supporter direction is applied on the retainer greater than supporter, allow retainer to leave magnet.

25, wheeled mower assembly as claimed in claim 24, wherein, geared assembly further comprises a plurality of setting elements that are formed on the supporter.

26, wheeled mower assembly as claimed in claim 25, wherein, geared assembly further comprises a plurality of holes that are formed on the retainer, is used to make setting element to be engaged to supporter.

27, wheeled mower assembly as claimed in claim 24, wherein, geared assembly further comprises a plurality of holes that are formed on the retainer, is used to make setting element to be engaged to supporter.

28, wheeled mower assembly as claimed in claim 23, wherein, bed plate has first side and second side, and each side all is mounted so that cutting function to be provided, and bed plate can be directed, so that the side in first side and second side provides cutting function.

29, wheeled mower assembly as claimed in claim 23, wherein, bed plate is by making than the flexible bigger material of retainer.

30, wheeled mower assembly as claimed in claim 23, wherein, bed plate is the tempering spring steel.

31, wheeled mower assembly as claimed in claim 23, wherein, different according to selected at least one retainer and supporter, the polarity between supporter and the retainer can change.

32, wheeled mower assembly as claimed in claim 23, wherein, bed plate can be changed.

33, wheeled mower assembly as claimed in claim 23, wherein, retainer is selected from a plurality of retainers of different-thickness.

34, wheeled mower assembly as claimed in claim 23 wherein, further comprises the multiplier or the walk-behind greensmower that support the wheeled mower assembly.

35, a kind of wheeled mower assembly comprises:

Frame;

Be connected to the main thruster that is used for mobile mower on the frame;

By frame support and be used to make the power source of main thruster work;

Rotation is installed to the wheeled mower on the frame;

Be used to driver that wheel is rotated around wheel shaft;

At least one is installed to the magnetized supporter on the frame;

When operating position, rely on magnetic to remain near the supporter bed plate retainer; And

Bed plate by the support of bed plate retainer.

36, wheeled mower assembly as claimed in claim 35, wherein, further comprise geared assembly, be used to prevent that the relative supporter of retainer from sliding, when retainer during at operating position, if be applied to gravitation on the retainer along deviating from the separating force that the retainer direction is applied on the retainer greater than supporter, allow supporter to leave magnet.

37, wheeled mower assembly as claimed in claim 36, wherein, bed plate is glued on the retainer.

38, wheeled mower assembly as claimed in claim 36, wherein, bed plate is riveted on the retainer.

39, wheeled mower assembly as claimed in claim 36 wherein, further comprises second bed plate that is supported on the retainer, and this second bed plate is relative with first bed plate.

40, wheeled mower assembly as claimed in claim 39, wherein, second bed plate is glued on the retainer.

41, wheeled mower assembly as claimed in claim 40, wherein, second bed plate is riveted on the retainer.

42, wheeled mower assembly as claimed in claim 36, wherein, geared assembly further comprises a plurality of holes that are formed on the retainer, is used to make the engagement of setting element and supporter.

43, wheeled mower assembly as claimed in claim 42, wherein, geared assembly further comprises a plurality of holes that are formed on the retainer, is used to make setting element to be engaged to supporter.

44, wheeled mower assembly as claimed in claim 35, wherein, bed plate comprises first side and second side, each side all is mounted so that cutting function to be provided, and bed plate can be directed, so that the side in first side and second side provides cutting function.

45, wheeled mower assembly as claimed in claim 35, wherein, bed plate is the tempering spring steel.

46, wheeled mower assembly as claimed in claim 35 wherein, further comprises the multiplier or the walk-behind greensmower that support the wheeled mower assembly.

Images