CN104695374B - Scavenging machine - Google Patents

Abstract

The present invention provides a kind of scavenging machine, including connecting rod, the main handle and main machine body, the motor in the main machine body that are connected with the connecting rod, the output shaft being connected with the motor, the work head around output shaft rotation.The work head includes cylindrical body and multiple brushing pieces, brushing piece has close to the root of cylindrical body and the bizet away from cylindrical body, the hardness of the root is more than the hardness of the bizet, changing firmness requirements when sweeping away snow and sweeping away rubbish to brushing piece are so taken into account, without the head that more changes jobs, simple to operate, cost is relatively low.

Description

Scavenging machine

Technical field

The present invention relates to a kind of scavenging machine.

Background technology

Existing scavenging machine has two kinds：One kind is specifically used to sweep away snow, and snow is first swept backward and dished out upwards, forward again；Separately One kind is used for cleaning rubbish, rubble etc., directly scans out rubbish, rubble etc. forward.The steering of the work head of both scavenging machines Conversely.When cleaning accumulated snow, due to need first by accumulated snow backward, then by accumulated snow upwards, forward dish out, therefore it is required that the brush of work head The hardness of piece is larger；And scavenging machine is used for when cleaning rubbish, it is necessary to which the brushing piece for the head that works deforms upon to carry when contacting with ground Height cleans effect, if brushing piece is not susceptible to deformation, and brushing piece will be caused to occur violent effect with fixed object on the work surface, Brushing piece is fragile or working surface is destroyed.

Need to configure different scavenging machines when therefore cleaning different objects, cost is higher, manage also cumbersome；Have Scavenging machine can have the function of sweeping away snow and sweep away rubbish simultaneously, but need to change different types of work head during operation, so behaviour Trouble, the cost of making comparisons are higher.

The content of the invention

The present invention provides a kind of scavenging machine, and the brushing piece of the work head of scavenging machine takes into account the changing firmness requirements for sweeping away snow and sweeping away rubbish, Simple to operate, cost is relatively low.

To achieve the above object, the technical scheme is that：A kind of scavenging machine for cleaning works surface, including even Extension bar, the main handle positioned at the connecting rod first end, the main machine body positioned at the end of connecting rod second, positioned at the main machine body Interior motor, the output shaft being connected with the motor and the work head rotated around the output shaft, the output shaft is arranged at institute The first end of connecting rod is stated, the main handle is arranged at the second end of the connecting rod, and the scavenging machine has the first Working mould Formula and the second mode of operation, an opposed working surfaces that worked described in the first mode of operation are turned to first to be rotated, second An opposed working surfaces that worked described in mode of operation are turned to opposite with the first steering second to be rotated, and the work head includes Cylindrical body and multiple brushing pieces extended radially outwardly from the cylindrical body, the brushing piece include close to the cylindrical body root and Bizet being connected with root, away from cylindrical body, the hardness of the root is more than the hardness of the bizet.

Preferably, the material of the root is plastics, and the material of the bizet is rubber.

Preferably, the material of the root is metal, and the material of the bizet is rubber or palm fiber.

Preferably, the root includes root main body and the root periphery positioned at the root main body periphery, the bizet It is connected with root periphery.

Preferably, the sectional area of the root is more than the sectional area of the bizet.

Preferably, the root includes being disposed adjacent and concordant the first sub- root and the second sub- root, and the bizet connects It is connected to the described first sub- root or second one end of sub- root away from cylindrical body.

Preferably, the root and the cylindrical body are detachably connected.

Preferably, work head also has a ring set for the periphery for being sheathed on the cylindrical body, and the root is from the ring Set extends radially outwardly.

Preferably, the one end of the root away from the cylindrical body has groove, and the bizet is plugged in the groove.

Preferably, the length ratio scope of the root and the bizet is 1:10 to 2:Between 1.

Preferably, the scavenging machine also includes the block piece between the connecting rod and work head, the block piece Relatively described output shaft is vertically arranged.

Preferably, the block piece has the lower side close to ground, the upper side edge away from ground and towards the work The medial surface of head, the medial surface includes first area and second area, described first successively from the upper side edge to lower side Gap between region and the brushing piece end gradually increases from the second area at the upper side edge, and described the Gap between two regions and the brushing piece end is fixed preset value.

Preferably, the first area is plane and the angle between the horizontal plane where the output shaft is arrived at 30 degree Between 75 degree.

Preferably, the second area is arc surface and the center of circle is located on the axis of the output shaft.

Preferably, the medial surface also has the 3rd region, the 3rd region and the brushing piece close to the lower side Bizet between gap be gradually reduced from the second area at the lower side.

Compared with prior art, the work head of scavenging machine of the invention includes cylindrical body and multiple brushing pieces, and brushing piece, which has, to be leaned on The root of nearly cylindrical body and the bizet away from cylindrical body, the hardness of the root are more than the hardness of the bizet, so take into account and sweep To the changing firmness requirements of brushing piece when avenging and sweeping away rubbish, without the head that more changes jobs, simple to operate, cost is relatively low.

Brief description of the drawings

The invention will be further described with embodiment below in conjunction with the accompanying drawings.

Fig. 1 is the schematic perspective view for the scavenging machine that embodiment of the present invention is provided.

Fig. 2 is the decomposing schematic representation of work head in Fig. 1 and block piece.

Fig. 3 is the schematic diagram when scavenging machine that embodiment of the present invention is provided is swept away snow.

Fig. 4 is the schematic diagram when scavenging machine that embodiment of the present invention is provided is swept away rubbish.

Fig. 5 is a kind of side schematic view of better embodiment of scavenging machine of the present invention.

Fig. 6 is the side schematic view of another better embodiment of scavenging machine of the present invention.

Fig. 7 is the diagrammatic cross-section of the work head of scavenging machine of the present invention.

Fig. 8 is the diagrammatic cross-section of another better embodiment of the work head of scavenging machine of the present invention.

Fig. 9 is the diagrammatic cross-section of another better embodiment of the work head of scavenging machine of the present invention.

Figure 10 is the diagrammatic cross-section of another better embodiment of the work head of scavenging machine of the present invention.

Figure 11 is the schematic diagram of mode of operation of sweeping away rubbish in another better embodiment of scavenging machine of the present invention.Wherein,

100. scavenging machine；60. output shaft；A. Part I；

10. work head；12. the first split；B. Part II；

20. main machine body；14. the second split；723. first area；

30. connecting rod；62. fixture；724. second area；

40. main handle；16. cylindrical body；725. the 3rd regions；

50. assist handle；18. brushing piece；O1, O2. center of circle；

70. block piece；72. master shield；181st, 181B, root；

42. power switch；74. side shield；182nd, 182B, bizet；

44. pole changer；71. through hole；181a, root main body；

52. fixing button；721. upper side edge；181b, root periphery；

32. first body of rod；722. lower side；181c, the first sub- root；

34. second body of rod；200. accumulated snow；181d, the second sub- root；

36. lock-button；300. rubbish；183rd, ring set；

Embodiment

Fig. 1 is refer to, first embodiment of the invention provides a kind of scavenging machine 100 of hand propelled, for cleaning road surface Accumulated snow or rubbish.

Scavenging machine 100 includes work first 10, main machine body 20, the motor inside main machine body 20 of column（It is not shown）、 Main handle 40, assist handle 50, output shaft 60 and block piece 70.The motor can be electro-motor or air motor, sheet In embodiment, the motor is electro-motor.

Output shaft 60 is arranged at the first end of connecting rod 30, and work first 10 is rotated around output shaft 60, and main handle 40 is arranged at Second end of connecting rod 30, main machine body 20 is arranged in connecting rod 30.In present embodiment, main machine body 20 is closed on work first 10 and set Put.In other embodiment, main machine body 20 may also set up in the middle part of connecting rod 30 or at main handle 40, now motor Output shaft 60 is connected by soft drive shaft.

Connecting rod 30 is provided with battery bag close to the second end of main handle 40（It is not shown）, or pass through cable and outside friendship Flow power supply（It is not shown）Connection.Battery bag or AC power provide driving energy for motor.

The inside of main handle 40 be additionally provided with for control motor so that cause work first 10 with first turn to or with first turn To the opposite second control unit for turning to rotation（It is not shown）.Main handle 40 is provided with power switch 42 and pole changer 44, When power switch 42 and pole changer 44 are pressed, work first 10 is turned to first to rotate；When only power switch 42 by by When lower, work first 10 is turned to second to rotate.In other embodiment, control unit may also set up in connecting rod 30 or main frame The inside of body 20.

Assist handle 50 is arranged between the first end of connecting rod 30 and the second end, and is set close to main handle 40.Auxiliary Handle 50 is pivotally connected with connecting rod 30, to adjust the relative angle between assist handle 50 and connecting rod 30.Assist handle 50 Fixing button 52 is additionally provided between connecting rod 30, after the relative angle between assist handle 50 and connecting rod 30 has been set, rotation Turn the fixing button 52 and may be such that assist handle 50 is relatively fixed with connecting rod 30.

When operating scavenging machine 100, user grips main handle 40 on the other hand, and assist handle 50 is gripped on the other hand, is so improved Operate the stability of scavenging machine 100.

Connecting rod 30 includes first body of rod 32 and second body of rod 34, and first body of rod 32 is arranged with second body of rod 34 and is connected, that This can relative constriction or stretching, extension, user can adjust the length of whole connecting rod 30 according to actual needs.First body of rod 32 with Lock-button 36 is provided between second body of rod 34, for locking the relative position between first body of rod 32 and second body of rod 34.

Fig. 2 is refer to, output shaft 60 is vertical with connecting rod 30 to be connected and be horizontally disposed with.Work first 10 includes the first split 12 And second split 14.First split 12 and the second split 14 are sheathed on the two ends of output shaft 60 and can revolved around output shaft 60 respectively Turn.Two ends of output shaft 60 are respectively equipped with fixture 62, and the first split 12 and the second split 14 are limited in into output shaft On 60.

First split 12 and the second split 14 include cylindrical body 16, and from the outer periphery of cylindrical body 16 stretch out it is many Individual brushing piece 18.Multiple brushing pieces 18 extend along the diameter parallel of output shaft 60, are parallel to each other and spaced set between multiple brushing pieces 18.

Block piece 70 is located between connecting rod 30 and work first 10, and relative output shaft 60 is vertically arranged.Block piece 70 is wrapped Master shield 72 and the side shield 74 positioned at the both sides of master shield 72 are included, forms accommodating between master shield 72 and the side shield 74 of both sides Portion, to house work first 10.The middle part of master shield 72 is provided with through hole 71, and connecting rod 30 connects through through hole 71 and with work first 10 Connect.

Master shield 72 has upper side edge 721 parallel with output shaft 60 and away from ground, and parallel with output shaft 60 and lean on Subaerial lower side 722.

Preferably, master shield 72 vertically on height be more than work first 10 diameter, work first 10 be located at upside Between side 721 and lower side 722, to cause work first 10 is blocked part 70 to envelope.

The scavenging machine 100 has the first mode of operation and the second mode of operation.

Fig. 3 is refer to, is used to clean accumulated snow 200 when scavenging machine 100 is in the first mode of operation, work first 10 has close The Part I A of the block piece 70 and Part II B away from block piece 70.During the first mode of operation, control unit control motor So that work first 10 is turned to first（Counter clockwise direction as depicted）Rotation.In figure, work first 10 is close to block piece 70 Part I A first turns to upper side edge 721, is then pivoted outwardly to the position away from block piece 70, lower side is turned again to afterwards 722, so accumulated snow 200 is dished out upwards, forward.

Fig. 4 is refer to, is used to clean rubbish 300 when scavenging machine 100 is in the second mode of operation, such as broken leaf, rubble.This When control unit control motor cause work first 10 with second turn to（Clockwise direction shown in figure）Rotate.In figure, work head 10 first turn to lower side 722 close to the Part I A of block piece 70, are then turned out, turn again to upper side edge 721, so straight Connect and scan out rubbish 300 forward.

Fig. 5 is refer to, master shield 72 has the medial surface towards work first 10 and indent.Medial surface from upper side edge 721 to Lower side 722 is successively including C1-C2 sections of first area 723, C2-C3 sections of second area 724.

Gap between first area 723 and the end of brushing piece 18 from second area 724 at upper side edge 721 gradually Increase, the gap between second area 724 and the end of brushing piece 18 is fixed preset value.The of the medial surface of such master shield 72 One region 723 is set in dehiscing so that accumulated snow can in the presence of work first 10 along inner side towards the front of scavenging machine 100 dish out compared with Remote distance.

Specifically, first area 723 is plane, and the angle α between the horizontal plane where output shaft 60 for 30 degree extremely 75 degree.In other embodiment, the angle α also movable change between horizontal plane where first area 723 and output shaft 60, User can manually or automatically adjust corresponding angle α as needed.In present embodiment, connecting rod 30 and first area 723 is vertical or near vertical.

Second area 724 is arc surface and center of circle O1 is located on the axis of output shaft 60, it is ensured that second area 724 and brush Gap between the end of piece 18 is fixed preset value.

Refer to Fig. 6, medial surface also has C3-C4 section of the 3rd region 725 close to lower side 722, the 3rd region 725 and Gap between the end of brushing piece 18 is gradually reduced from second area 724 at lower side 722, so that accumulated snow It is difficult to pour out at lower side 722 after into the gap between the medial surface and brushing piece 18 of master shield 72.

Specifically, the 3rd region 725 is arc surface, and center of circle O2 and second area 724 center of circle O1 are misaligned, the 3rd area The arc radius in domain 725 is smaller than the arc radius of second area 724.

Specifically, the scope in the gap between first area 723 and the end of brushing piece 18 in 2mm between 300mm；Secondth area Interstice coverage between domain 724 and the end of brushing piece 18 is in 3mm between 10mm；Between 3rd region 725 and the end of brushing piece 18 The scope in gap is in 2mm between 5mm.

Preferably, the gap between the 3rd region 725 and the end of brushing piece 18 at lower side 722 is 2.5mm, in the secondth area Gap at domain 724 is 5mm；Gap between second area 724 and the end of brushing piece 18 is 5mm；First area 723 and brushing piece 18 Gap between end at second area 724 is 5mm, and the gap at upper side edge 721 is 40mm.

In other embodiment, first area 723 or nonplanar arc surface or other curved surfaces；3rd region 725 Or the plane or other curved surfaces of connection lower side 722 and second area 724.

Preferably, the linear speed angle value of the corresponding work of the first rotating speed first 10 is between 6 to 27.5 metre per second (m/s)s, the second rotating speed pair The linear speed angle value for the work first 10 answered is between 1.6 to 7.8 metre per second (m/s)s.

When scavenging machine 100 is in the first mode of operation, need first to sweep accumulated snow 200 to master shield 72, then by accumulated snow backward 200 dish out upwards, forward, therefore higher to the rotation speed requirements of work first 10；And only needed during the second mode of operation by rubbish 300 to It is preceding to release, rubble etc. may be caused to dish out upwards, backward if rotating speed is too high, there is the danger for injuring user by a crashing object, therefore it is required that The rotating speed of work first 10 is relatively low.

Specifically, second turn when the first rotating speed during first 10 first mode of operation of the work is more than the second mode of operation Speed.First rotating speed is higher than the second rotating speed, may be such that when scavenging machine 100 is in the first mode of operation there is enough kinetic energy snow throwings, locates Rubble etc. is avoided when the second mode of operation and injures user by a crashing object.In other embodiment, the first rotating speed can also be equal to second turn Speed.

Specifically, control unit controls the rotating speed of motor by controlling the voltage of motor, and then changes work first 10 Rotating speed.

Preferably, the ratio between the first rotating speed and the second rotating speed are 1 to 17.5, i.e., more than or equal to 1 and less than or equal to 17.5.This reality Apply in mode, the ratio between the first rotating speed and the second rotating speed are 8.

Under higher rotation speed, cause product if the angle α between the horizontal plane where master shield 72 and output shaft 60 is too small Snow is encountered master shield 72 and rebounded onto work first 10, it is impossible to effectively dishes out, may adhere on work first 10 or block piece 70.For Ensure that accumulated snow can be successfully spilled under maximum (top) speed, when designing multiple scavenging machines 100, the angle α with it is each The maximum (top) speed of the work first 10 of individual scavenging machine 100 is corresponding, and does not interfere with snow throwing operation during compared with low velocity.Statistics is corresponding Data, then the angle α of multiple scavenging machines 100 and the maximum (top) speed of its work first 10 almost show linear correlation.Such as work head When 10 maximum (top) speed is 27.5m/s, the angle α between horizontal plane where master shield 72 and output shaft 60 is 75 degree, work When first 10 maximum (top) speed is 20m/s, the angle α between horizontal plane where master shield 72 and output shaft 60 is 60 degree.

Fig. 3 and Figure 11 is refer to, the scavenging machine 100 with work first 10 can also switch the first Working mould by overturning fuselage Formula and the second mode of operation.

First mode of operation is used to sweep away snow, and the lower side 722 of block piece 70 is against ground.Work first 10 is close to block piece 70 Part I A first turn to upper side edge 721, be then pivoted outwardly to the position away from block piece 70, lower side turned again to afterwards 722, so accumulated snow 200 is dished out upwards, forward.

Second mode of operation is used to sweep away rubbish, now the overall upset of scavenging machine 100, and block piece 70 is integrally located at work first 10 Top.Work first 10 still first turns to upper side edge 721 close to the Part I A of block piece 70, then earthward rotates, Zhi Houzai Turn to lower side 722.Because now block piece 70 does not form barrier effect to rubbish 300, directly rubbish 300 can be swept forward Go out.In other embodiment, scavenging machine 100 can also be cleaned to other working surfaces.

When operation scavenging machine 100 carries out the cleaning of single direction to working surface, in above two mode of operation, although With respect to block piece 70, the steering of work first 10 does not change；But opposed working surfaces, work first 10 steering change Become.So realize sweep away snow mode of operation and the mode of operation that sweeps away rubbish.

When scavenging machine 100 is used to clean accumulated snow, due to needing first to sweep accumulated snow 200 to master shield 72, then by accumulated snow backward 200 dish out upwards, forward, therefore it is required that the hardness of the brushing piece 18 of work first 10 is larger；And scavenging machine 100 is used to clean rubbish When, it is necessary to which first 10 brushing piece 18 of working is deformed upon to improve cleaning effect when being contacted with ground, if brushing piece 18 is not susceptible to shape Become, brushing piece 18 and fixed object on the work surface will be caused to occur violent effect, brushing piece 18 is fragile or working surface quilt Destruction.

The hardness of the brushing piece 18 of the work first 10 of the scavenging machine 100 of the present invention is moderate, takes into account the need for cleaning accumulated snow and rubbish Ask, switching the first mode of operation and the second mode of operation without more changing jobs first 10, improve security, it is simple to operate, into This is relatively low.

Refer to Fig. 7, the brushing piece 18 of work first 10 has close to the root 181 of cylindrical body 16, and away from cylindrical body 16 and The bizet 182 being connected with root 181, the wherein hardness of root 181 are more than the hardness of bizet 182.In present embodiment, root 181 material is engineering plastics, and the material of bizet 182 is rubber.In other embodiment, the material of root 181 is alternatively gold The rigid materials such as category, the material of bizet 182 is alternatively the flexible materials such as mane.

Fig. 8 is refer to, further, root 181 includes root main body 181a and the root positioned at root main body 181a peripheries Portion periphery 181b, bizet 182 is connected with root periphery 181b.

Root 181 can be integrally formed or detachably connected with cylindrical body 16.If root 181 and cylindrical body 16 are detachable Ground is connected, detachable when in part, brushing piece 18 is worn and torn or deformed, and is substituted for new brushing piece.

Work first 10 can also have the ring set 183 for the periphery for being arranged and being fixed on cylindrical body 16, and root 181 is from ring set 183 Extend radially outwardly, such ring set 183 constitutes brushing piece component with multiple brushing pieces 18, and detachably connected with cylindrical body 16, when More brushing piece 18 can replace with whole brushing piece component new brushing piece component when wearing and tearing or deforming, and improve brushing piece and change just Victory.

The one end of root 181 away from cylindrical body 16 can also be provided with groove（It is not shown）, bizet 182 is plugged in groove, when Fast changeable Cheng Xin bizet 182 when bizet 182 weares and teares.Preferably, bizet 182 is located at the size of the part of groove more than recessed Bizet 182, is firmly caught in groove, so improves the stabilization that bizet 182 is connected with root 181 by the size of groove during installation Property.

The proportion of the length of root 181 and the length of bizet 182 is 1:10 to 2:Between 1.The wherein length of bizet 182 Scope is spent between 5-50mm.Preferably, the length of root 181 is 60mm, and the length of bizet 182 is 30mm.

Refer in Fig. 9, another embodiment, root 181 include being disposed adjacent and the first concordant sub- root 181c and Second sub- root 181d, bizet 182 is connected with the first sub- sub- one end of root 181d away from cylindrical body 16 of root 181c or second. In present embodiment, bizet 182 is connected with the first sub- root 181c, and now the first sub- root 181c is constituted together with bizet 182 Main brushing piece, the second sub- root 181d constitutes time brushing piece, and main brushing piece is more than time brushing piece along the length that cylindrical body 16 is radially extended.

In present embodiment, main brushing piece is fabricated from a flexible material, and secondary brushing piece is made up of high hardness material.In the first Working mould During formula, work first 10 along diagram counterclockwise rotates, the end of main brushing piece deforms upon, the bottom of main brushing piece due to by The support of secondary brushing piece and be difficult to deform upon, so realize and sweep away snow function；In the second mode of operation, work first 10 edge and diagram Direction in opposite direction is rotated, and the end of main brushing piece is deformed upon, and now the bottom of main brushing piece is due to the support of not secondary brushing piece And deform upon, so realize the function that sweeps away rubbish.

It refer in Figure 10, another embodiment, the brushing piece 18 of work first 10 also can integrally use same flexible material, But root 181B sectional area is more than bizet 182B sectional area.So that root 181B hardness is more than the hard of bizet 182B Degree so that root 181B is unlikely to deform compared with bizet 182B.

In present embodiment, thickness from the root 181B of brushing piece 18 2mm gradually decrease to bizet 182B 1.3mm.Its In his embodiment, brushing piece 18 may also differentiate between as the visibly different root of thickness and bizet, and the thickness of root is fixed as 2mm, be preced with The thickness in portion is fixed as 1.3mm.

The output shaft 60 of the scavenging machine 100 of the present invention is horizontally disposed with, and scavenging machine 100 has the first mode of operation and the second work Operation mode, control unit control work first 10 is turned to first and rotated during the first mode of operation, and work head during the second mode of operation 10 turn to opposite second and rotate so that scavenging machine 100 realizes the function of sweeping away snow and sweep away rubbish, and simple to operate, cost compared with It is low.

It may occur to persons skilled in the art that, the present invention can also have other implementations, but as long as it is used Technical spirit and the present invention it is same or like seemingly, or it is any based on the variations and alternatives made of the present invention all the present invention's Within protection domain.

Claims (10)

1. a kind of scavenging machine for cleaning works surface, including connecting rod, the main handle positioned at the connecting rod first end, position In the main machine body at the end of connecting rod second, the electro-motor in the main machine body, be connected with the electro-motor it is defeated Shaft and the work head rotated around the output shaft, it is characterised in that the scavenging machine has the first mode of operation and the second work Operation mode, an opposed working surfaces that worked described in the first mode of operation are turned to first to be rotated, in the second mode of operation The work head opposed working surfaces are turned to opposite with the first steering second to be rotated, and the work head includes cylindrical body and many The individual brushing piece extended radially outwardly from the cylindrical body, the brushing piece includes close to the root of the cylindrical body and is connected with root , bizet away from cylindrical body, the hardness of the root is more than the hardness of the bizet.

2. scavenging machine according to claim 1, it is characterised in that：The material of the root is engineering plastics, the bizet Material be rubber.

3. scavenging machine according to claim 1, it is characterised in that：The material of the root is metal, the material of the bizet Expect for rubber or palm fiber.

4. the scavenging machine according to Claims 2 or 3, it is characterised in that：The root includes root main body and positioned at described The root periphery of root main body periphery, the bizet is connected with root periphery.

5. scavenging machine according to claim 1, it is characterised in that：The root and bizet use flexible material, and institute The sectional area for stating root is more than the sectional area of the bizet.

6. scavenging machine according to claim 1, it is characterised in that：The root includes being disposed adjacent and the first concordant son Root and the second sub- root, the bizet are connected to the described first sub- root or second one end of sub- root away from cylindrical body.

7. scavenging machine according to claim 1, it is characterised in that：The root and the cylindrical body are detachably connected.

8. scavenging machine according to claim 1, it is characterised in that：The work head, which also has, is sheathed on the cylindrical body The ring set of periphery, the root extends radially outwardly from the ring set.

9. scavenging machine according to claim 1, it is characterised in that：The one end of the root away from the cylindrical body has recessed Groove, the bizet is plugged in the groove.

10. scavenging machine according to claim 1, it is characterised in that：The length of the root and the length of the bizet Proportion is 1:10 to 2:Between 1.