阅读说明：本技术 一种用于果树种植的高效松土装置 (A device that loosens soil efficiently for fruit tree is planted ) 是由 唐继红 于 2021-08-17 设计创作，主要内容包括：本发明公开了一种用于果树种植的高效松土装置,包括支撑机构和松土机构,通过安装的松土拨片对土壤进行松动,且整体装置为分组式滚筒状装置,在其中一个分组进行工作的时,其他分组处于准工作状态,方便装置在维修时的拆解效率,在滚动时按压单一分组,此时松土拨片才会对土壤进行松土,因装置为分组式滚筒状机构在完成单一分组松土后横向滚动,下一单元分组重复上述步骤,从而对土壤进行整排松土,且在准工作状态下松土拨片处于压力承接环片的内腔,避免其锋利拨片口对工作人员造成意外伤害,提高了装置的实用性。(The invention discloses a high-efficiency soil loosening device for fruit tree planting, which comprises a supporting mechanism and a soil loosening mechanism, soil is loosened through a soil loosening shifting sheet arranged, the whole device is a grouped roller-shaped device, when one group works, other groups are in a quasi-working state, the disassembly efficiency of the device during maintenance is convenient, when the device rolls, a single group is pressed, the soil loosening shifting sheet can loosen the soil, the device transversely rolls after completing single group soil loosening for the grouped roller-shaped device, the next unit group repeats the steps, so that the soil is loosened in a whole row, the soil loosening shifting sheet is in an inner cavity of a pressure bearing ring sheet in the quasi-working state, accidental injury to workers due to a sharp shifting sheet opening of the pressure bearing ring sheet is avoided, and the practicability of the device is improved.)

1. An efficient soil loosening device for fruit tree planting comprises a supporting mechanism (1) and a soil loosening mechanism (2), it is characterized in that the supporting mechanism (1) comprises a mounting disc (11), an external connecting rod (12), a transverse connecting rod (13), a mounting block (14) and an internal connecting shaft block (15), two ends of the mounting disc (11) are provided with external connecting rods (12), the other ends of the external connecting rods (12) are connected with transverse connecting rods (13), the two ends of the transverse connecting rod (13) are respectively provided with a mounting block (14), the inner end of the mounting block (14) is in interference fit with the inner connecting shaft block (15), the inner end of the inner connecting shaft block (15) is connected with a soil loosening mechanism (2), the soil loosening mechanism (2) comprises an adjusting mechanism (21) and a soil contact mechanism (22), and the outer ring of the adjusting mechanism (21) is annularly provided with a soil contact mechanism (22).

2. The efficient soil loosening device for fruit tree planting according to claim 1, wherein the adjusting mechanism (21) comprises an assembly ring piece (211), an extension wheel piece (212), an inner connecting shell (213), an adjusting strip (214), a middle mounting ring (215) and an outer pushing strip (216), the extension wheel piece (212) is arranged on an outer ring annular array of the assembly ring piece (211), the inner connecting shell (213) is mounted at the inner end of the assembly ring piece (211), the other end of the inner connecting shell (213) is connected with the middle mounting ring (215), and the outer pushing strip (216) penetrates through the outer ring annular array of the middle mounting ring (215).

3. The efficient soil loosening device for fruit tree planting according to claim 2, wherein the assembly ring piece (211) comprises an annular member (2111), through holes (2112), an inner clamping ring (2113), through holes (2114) and a hollow cavity (2115), the through holes (2112) are formed in an outer ring annular array of the annular member (2111), the inner clamping ring (2113) is installed in an inner cavity of the annular member (2111), the through holes (2114) are formed in an outer ring annular array of the inner clamping ring (2113), and the hollow cavity (2115) is formed in the middle of the inner clamping ring (2113).

4. The efficient soil loosening device for fruit tree planting according to claim 3, wherein the adjusting bar (214) comprises a fulcrum sphere (2141), an insertion cavity (2142), a support column (2143) and a connecting bar body (2144), the insertion cavity (2142) is formed in the annular array of the outer ring of the fulcrum sphere (2141), the support column (2143) is inserted into the inner cavity of the insertion cavity (2142), and the other end of the support column (2143) is connected with the connecting bar body (2144).

5. The efficient soil loosening device for fruit tree planting as claimed in claim 4, wherein the engagement strip (2144) is a double-sided protruding strip-shaped member.

6. The efficient soil loosening device for fruit tree planting as claimed in claim 4, wherein the number of the insertion cavities (2142), the through holes (2112), the through holes (2114), the extending wheel pieces (212) and the outer push strips (216) is the same, and the angles are the same.

7. The efficient soil loosening device for fruit tree planting according to claim 1, wherein the soil contact mechanism (22) comprises a limiting elastic column (221), a bearing column (222), an assembling cross bar (223), an arranging and mounting block (224), a soil loosening poking sheet (225) and a pressure bearing ring sheet (226), the bearing column (222) is mounted at the side end of the limiting elastic column (221), the other end of the bearing column (222) is connected with the middle of the assembling cross bar (223), the assembling cross bar (223) is mounted in an inner cavity of the pressure bearing ring sheet (226), the arranging and mounting block (224) is mounted at the other side of the assembling cross bar (223) in an arranging manner, and the soil loosening poking sheet (225) is mounted at the upper end of the arranging and mounting block (224).

8. The efficient soil loosening device for fruit tree planting as claimed in claim 7, wherein the outermost ends of the pressure receiving ring sheets (226) are fitted in parallel with the edges of the assembly cross bars (223).

9. The efficient soil loosening device for fruit tree planting as claimed in claim 7, wherein the soil loosening paddle (225) is at an angle of 70 degrees with respect to the arrangement mounting block (224).

10. The efficient soil loosening device for fruit tree planting as claimed in claim 4, wherein the outer end of the engaging strip body (2144) is engaged with the inner end of the extending wheel piece (212), and the inner end of the engaging strip body (2144) is engaged with the inner end of the outer pushing strip (216).

Technical Field

The invention relates to the technical field of soil loosening, in particular to an efficient soil loosening device for fruit tree planting.

Background

When planting the fruit tree, sometimes for the increase plant area, need loosen the soil to soil, for making the fruit tree can normal growth, need loosen the soil to soil, increase the air permeability of soil, oxygen content in the soil increases, the respiration of reinforcing crops, most of the device that loosens the soil on the present market can't utilize grouping formula cylinder mechanism to singly divide into groups the soil, can't avoid sharp plectrum mouth to cause the problem of unexpected injury to the staff.

Patent number CN201910275281.4 discloses a fruit tree is planted with high-efficient device that loosens soil, comprising a base plate, the fixed welding in bottom plate upper surface one side has two corresponding handlebar hands, equal fixed mounting has the wheel that corresponds on two sides that the bottom plate corresponds all around, fixed mounting has two first spliced poles that correspond on the side of handlebar hand is kept away from all around to the bottom plate has two the terminal equal fixed mounting of bottom plate one side to keep away from on the first spliced pole has the coulter that corresponds, the bottom plate lower surface is close to handlebar hand one side fixed welding and has two first fixed plates that correspond. The invention solves the problem that soil blocks are fully crushed after being lifted, but the soil can not be loosened in a single grouping mode by utilizing a grouping type roller-shaped mechanism.

The patent number CN201922107085.4 discloses a soil loosening device for fruit tree planting, which comprises a main shaft and an accommodating box, wherein a handheld handle is arranged on the accommodating box, a driving motor is arranged in the accommodating box, one end of the main shaft penetrates through the accommodating box and is connected with a driving shaft of the driving motor, a mounting disc is arranged at the other end of the main shaft, a soil loosening mechanism is arranged on the mounting disc, and the soil loosening mechanism comprises a plurality of rubber rods uniformly arranged along the circumferential direction of the mounting disc; the middle part of main shaft has cup jointed the support frame, the support frame includes first backup pad and second backup pad. The invention can adaptively adjust the scarification depth according to the needs of different fruit trees, but can avoid the problem that a sharp blade opening of the scarification mechanism accidentally injures workers when the scarification mechanism cannot be used for scarifying soil.

Therefore, an efficient soil loosening device for fruit tree planting is provided to solve the problems.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides an efficient soil loosening device for fruit tree planting, which aims to solve the problem that soil can not be loosened in a single grouping mode by using a grouping type roller-shaped mechanism and avoid accidental injury to workers caused by sharp blade shifting openings of the grouping type roller-shaped mechanism.

In order to achieve the purpose, the invention adopts the following technical scheme: a high-efficiency soil loosening device for fruit tree planting comprises a supporting mechanism and a soil loosening mechanism, wherein the supporting mechanism comprises a mounting disc, an external connecting rod, a transverse connecting rod, a mounting block and an internal connecting shaft block, the external connecting rod is arranged at two ends of the mounting disc, the other end of the external connecting rod is connected with the transverse connecting rod, the mounting block is arranged at two ends of the transverse connecting rod, the inner end of the mounting block is in interference fit with the internal connecting shaft block, the inner end of the internal connecting shaft block is connected with the soil loosening mechanism, the soil loosening mechanism comprises an adjusting mechanism and a soil contact mechanism, the soil contact mechanism is annularly arranged at the outer ring of the adjusting mechanism, the integral device is placed above soil needing to be loosened, the upper end of the mounting disc is connected with the integral device through a driving machine or a tool component, so that the device can transversely move on the soil, and is downwards pressed to give gravity to the device while keeping transverse uniform motion, at this time, the force received by the mounting disc is distributed outwards to the mounting blocks arranged at the two ends of the transverse connecting rod.

Preferably, the adjusting mechanism comprises an assembly ring piece, an extension wheel piece, an inner connecting shell, an adjusting strip, a middle mounting ring and an outer pushing strip, the extension wheel piece is arranged on an outer ring annular array of the assembly ring piece, the inner connecting shell is arranged at the inner end of the assembly ring piece, the other end of the inner connecting shell is connected with the middle mounting ring, and the outer pushing strip penetrates through the outer ring annular array of the middle mounting ring.

Preferably, the assembled ring piece comprises an annular member, a through hole, an inner clamping ring, a through hole and a hollow cavity, the through hole is formed in an outer ring annular array of the annular member, the inner clamping ring is installed in an inner cavity of the annular member, the through hole is formed in an outer ring annular array of the inner clamping ring, and the hollow cavity is formed in the middle of the inner clamping ring.

Preferably, the adjusting strip comprises a fulcrum sphere, a penetration cavity, a support column and a linking strip body, the penetration cavity is arranged on the outer ring of the fulcrum sphere in an annular array, a supporting column is inserted into the inner cavity of the insertion cavity, the other end of the supporting column is connected with the connecting strip body, the soil loosening mechanism is pressed downwards integrally, the extending wheel piece moves towards the inner cavity of the through hole at the moment, penetrates through the inner cavity of the through hole and is connected with the bulge at the outer end of the connecting strip body, the connecting strip body performs lever motion by taking the supporting column and the fulcrum ball body as a fulcrum at the moment, the outer end of the connecting strip body is pressed downwards under stress, the inner end of the connecting strip body is raised, the inner end bulge of the connecting strip body is contacted with the inner end of the outer pushing strip, the outer pushing strip is pushed to the outer end, the limiting elastic column is pushed to drive the bearing column to push outwards, the assembling cross strip extends to the outer end at the moment, the outer end of the soil loosening stirring sheet extends out of the edge of the pressure bearing ring sheet, and the outer end of the soil loosening stirring sheet extends into soil needing soil loosening.

Preferably, the connecting strip is a double-sided protruding strip-shaped member.

Preferably, the number of the insertion cavities, the through holes, the extending wheel sheets and the outer push strips is the same, and the angles are the same.

Preferably, the soil contact mechanism comprises a limiting elastic column, a bearing column, an assembling cross bar, an arranging and installing block, a soil loosening shifting sheet and a pressure bearing ring sheet, the bearing column is installed at the side end of the limiting elastic column, the other end of the bearing column is connected with the middle of the assembling cross bar, the assembling cross bar is installed in the inner cavity of the pressure bearing ring sheet, the arranging and installing block is arranged at the other side of the assembling cross bar, the soil loosening shifting sheet is installed at the upper end of the arranging and installing block, soil is loosened through the installed soil loosening shifting sheet, the integral device is a grouped roller-shaped device, when one group works, other groups are in a quasi-working state, the disassembling efficiency of the device during maintenance is facilitated, a single group is pressed during rolling, the soil loosening shifting sheet can loosen the soil, and the device is a grouped roller-shaped mechanism after single group soil loosening is completed, and transversely rolling, and grouping the next unit to repeat the steps so as to loosen soil in a whole row, wherein the soil loosening poking sheet is positioned in the inner cavity of the pressure bearing ring sheet in a quasi-working state.

Preferably, the outermost ends of the pressure-bearing ring sheets are attached to the edges of the assembling cross bars in parallel.

Preferably, the soil loosening shifting sheet has an included angle relative to the arrangement mounting blocks, and the included angle degree is degree.

Preferably, the outer end of the connecting strip body is connected with the inner end of the extending wheel sheet, and the inner end of the connecting strip body is connected with the inner end of the outer pushing strip.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention provides an efficient soil loosening device for fruit tree planting, which comprises a supporting mechanism and a soil loosening mechanism, wherein the integral device is placed above soil needing to be loosened, the upper end of a mounting disc is connected with the integral device through a driving machine or a tool assembly, so that the integral device can move transversely on the soil, the device is pressed downwards to give gravity to the integral device while keeping transverse uniform-speed motion, and the force borne by the mounting disc is distributed outwards to mounting blocks arranged at two ends of a transverse connecting rod.

2. The invention provides an efficient soil loosening device for fruit tree planting, wherein a soil loosening mechanism is integrally pressed downwards, at the moment, an extension wheel sheet moves towards an inner cavity of a through hole and penetrates through the inner cavity of the through hole to be connected with a bulge at the outer end of a connecting strip body, the connecting strip body carries out lever motion by taking a support column and a fulcrum ball as fulcrums at the moment, the outer end of the connecting strip body is pressed downwards under force, the inner end of the connecting strip body is lifted, the bulge at the inner end of the connecting strip body is contacted with the inner end of an outer pushing strip, the outer pushing strip is pushed towards the outer end, a limiting elastic column is pushed to drive a bearing column to push outwards, at the moment, an assembly cross bar extends towards the outer end, the outer end of a soil loosening poking sheet extends out of the edge of a pressure bearing ring sheet, and the assembly cross bar extends into soil needing soil loosening.

3. The invention provides a high-efficiency soil loosening device for fruit tree planting, soil is loosened through a soil loosening poking sheet arranged, the whole device is a grouping type roller-shaped device, when one grouping works, other groupings are in a quasi-working state, the disassembly efficiency of the device during maintenance is facilitated, a single grouping is pressed during rolling, the soil loosening poking sheet can loosen the soil, the device transversely rolls after completing single grouping soil loosening due to the grouping type roller-shaped mechanism, the next unit grouping repeats the steps, so that the soil is loosened in whole rows, the soil loosening poking sheet is in an inner cavity of a pressure bearing ring sheet in the quasi-working state, accidental injury to workers due to a sharp poking sheet opening of the device is avoided, and the practicability of the device is improved.

Drawings

Fig. 1 is an overall structural view of an efficient soil loosening device for fruit tree planting according to the present invention;

FIG. 2 is a schematic structural view of a support mechanism;

FIG. 3 is a schematic structural view of a ripping mechanism;

FIG. 4 is a schematic view of the adjustment mechanism;

FIG. 5 is a schematic view of an assembled ring structure;

FIG. 6 is a schematic view of the structure of the adjustment bar;

fig. 7 is a schematic view of the soil contact mechanism.

In the figure: 1. a support mechanism; 11. mounting a disc; 12. an extension rod; 13. a transverse connecting rod; 14. mounting blocks; 15. an inner connecting shaft block; 2. a soil loosening mechanism; 21. an adjustment mechanism; 211. assembling the ring piece; 2111. an annular member; 2112. a through hole; 2113. an inner clamping ring; 2114. a through hole; 2115. a hollow cavity; 212. an extension wheel sheet; 213. an inner connecting shell; 214. an adjustment bar; 2141. a fulcrum sphere; 2142. inserting the cavity; 2143. a support pillar; 2144. an engagement strip; 215. a middle mounting ring; 216. an outer push bar; 22. a soil contact mechanism; 221. limiting the elastic column; 222. a support post; 223. assembling the transverse strips; 224. arranging the mounting blocks; 225. a soil loosening poking sheet; 226. the pressure bears the ring plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

Referring to fig. 1-3, a high-efficiency soil loosening device for fruit tree planting comprises a supporting mechanism 1 and a soil loosening mechanism 2, wherein the supporting mechanism 1 comprises a mounting disc 11, an external connecting rod 12, a transverse connecting rod 13, a mounting block 14 and an internal connecting shaft block 15, the external connecting rod 12 is arranged at two ends of the mounting disc 11, the other end of the external connecting rod 12 is connected with the transverse connecting rod 13, the mounting block 14 is arranged at two ends of the transverse connecting rod 13, the inner end of the mounting block 14 is in interference fit with the internal connecting shaft block 15, the inner end of the internal connecting shaft block 15 is connected with the soil loosening mechanism 2, the soil loosening mechanism 2 comprises an adjusting mechanism 21 and a soil contact mechanism 22, the soil contact mechanism 22 is annularly arranged on the outer ring of the adjusting mechanism 21, the whole device is placed above soil to be loosened, the upper end of the mounting disc 11 is connected with the whole device through a driving machine or a tool assembly, so that the device can transversely move on the soil, the device is pressed downwards while maintaining a constant transverse motion, giving it gravity, and the force received by the mounting plate 11 is distributed outwards to the mounting blocks 14 provided at the two ends of the transverse bar 13.

Example 2

Referring to fig. 4 and 5, an efficient soil loosening device for fruit tree planting is provided, in which an adjusting mechanism 21 includes an assembly ring 211, extension wheel pieces 212, an internal connection shell 213, an adjusting bar 214, a middle mounting ring 215, and an external pushing bar 216, the extension wheel pieces 212 are arranged in an outer ring annular array of the assembly ring 211, the internal connection shell 213 is installed at an inner end of the assembly ring 211, the other end of the internal connection shell 213 is connected with the middle mounting ring 215, the external pushing bar 216 is arranged in an outer ring annular array of the middle mounting ring 215 in a penetrating manner, preferably, the assembly ring 211 includes an annular member 2111, a through hole 2112, an internal clamping ring 2113, a through hole 2114, and a middle cavity 2115, the outer ring annular array of the annular member 2111 is provided with a hole 2112, an inner cavity of the annular member 2111 is provided with an internal clamping ring 2113, the outer ring annular array of the internal clamping ring 2113 is provided with a through hole 2114, and the middle of the internal clamping ring 2113 is provided with a hollow cavity 2115.

Example 3

Referring to fig. 6 and 7, an efficient soil loosening device for fruit tree planting, the adjusting bar 214 includes a supporting point sphere 2141, an inserting cavity 2142, a supporting column 2143 and a connecting bar body 2144, the inserting cavity 2142 is formed in an outer ring annular array of the supporting point sphere 2141, the supporting column 2143 is inserted into an inner cavity of the inserting cavity 2142, the other end of the supporting column 2143 is connected to the connecting bar body 2144, the soil loosening mechanism 2 is pressed down integrally, the extending wheel piece 212 moves towards an inner cavity of the through hole 2112, penetrates through the inner cavity of the through hole 2114 to be connected with a bulge at an outer end of the connecting bar body 2144, the connecting bar body 2144 performs lever motion by using the supporting column 2143 and the supporting point sphere 2141 as a supporting point, an outer end of the connecting bar body 2144 is pressed down by force, an inner end of the connecting bar body 2144 is raised, a bulge at an inner end of the connecting bar body 2144 contacts an inner end of the outer pushing bar 216, so that the outer pushing bar 216 pushes the limiting elastic column 221 to drive the receiving column 222 to push outwards, and an end of the assembling cross bar 223 is extended, the outer end of the loosening poking piece 225 extends out of the edge of the pressure bearing ring piece 226 and extends into the soil to be loosened, the connecting strip body 2144 is a double-side protruding strip-shaped component, preferably, the inserting cavity 2142, the through hole 2112, the through hole 2114, the extending wheel piece 212 and the outer pushing strip 216 are arranged in the same number and at the same angle, the soil contact mechanism 22 comprises a limiting elastic column 221, a bearing column 222, an assembling cross bar 223, an arrangement mounting block 224, a loosening poking piece 225 and a pressure bearing ring piece 226, the bearing column 222 is mounted at the side end of the limiting elastic column 221, the other end of the bearing column 222 is connected with the middle of the assembling cross bar 223, the assembling cross bar 223 is mounted in the inner cavity of the pressure bearing ring piece 226, the arrangement mounting block 224 is mounted at the other side of the assembling cross bar 223, the loosening poking piece 225 is mounted at the upper end of the arrangement mounting block 224, and the soil is loosened through the mounted loosening poking piece 225, and the whole device is a grouping roller-shaped device, when one of the groups works, other groups are in a quasi-working state, the disassembly efficiency of the device is convenient during maintenance, when a single group is pressed during rolling, soil can be loosened by the soil loosening poking sheet 225, because the device is a grouping roller-shaped mechanism, after the single group soil loosening is completed, the device transversely rolls, the next unit group repeats the steps, so that soil is loosened in a whole row, in the quasi-working state, the soil loosening poking sheet 225 is positioned in the inner cavity of the pressure bearing ring sheet 226, the accidental injury of a sharp poking sheet port to workers is avoided, the practicability of the device is improved, the outermost end of the pressure bearing ring sheet 226 is parallelly attached to the edge of the assembly cross bar 223, an included angle exists between the soil loosening poking sheet 225 and the arrangement mounting block 224, the included angle is 70 degrees, the outer end of the strip body 2144 is connected with the inner end of the extension wheel sheet 212, the inner end of the engaging bar 2144 engages with the inner end of the outer push bar 216.

The working principle is as follows: the invention provides a high-efficiency soil loosening device for fruit tree planting, which comprises a supporting mechanism 1 and a soil loosening mechanism 2, wherein the integral device is placed above soil to be loosened, the upper end of a mounting disc 11 is connected with the integral device through a driving machine or a tool component, so that the integral device can transversely move on the soil, the device is pressed downwards to give gravity while keeping transverse uniform motion, the force borne by the mounting disc 11 is outwards distributed to mounting blocks 14 arranged at two ends of a transverse connecting rod 13 at the moment, the integral soil loosening mechanism 2 is pressed downwards, a wheel piece 212 is extended to the inner cavity of a through hole 2112 at the moment, the wheel piece penetrates through the inner cavity of the through hole 2114 to be connected with a bulge at the outer end of a connecting strip body 2144, the connecting strip body 2144 carries out lever motion by taking a supporting column 2143 and a fulcrum ball 2141 as a fulcrum at the moment, the outer end of the connecting strip body 2144 is pressed downwards under force, the inner end of the connecting strip body 2144 is lifted, the bulge at the inner end of the connecting strip body 2144 is contacted with the inner end of an outer pushing strip 216, the outer pushing strip 216 is pushed to the outer end to push the limiting elastic column 221 to drive the receiving column 222 to push outwards, at this time, the assembling cross strip 223 extends to the outer end to make the outer end of the soil loosening poking piece 225 extend out of the edge of the pressure receiving ring piece 226 to make the outer end extend into the soil to be loosened, soil is loosened by the arranged soil loosening poking sheet 225, and the whole device is a grouping type roller-shaped device, when one of the groups works, the other groups are in a quasi-working state, so that the disassembly efficiency of the device during maintenance is convenient, when the single group is pressed during rolling, the soil loosening poking sheet 225 can loosen the soil, because the device is a grouped roller-shaped mechanism, after the single group soil loosening is completed, the roller-shaped mechanism rolls transversely, the next unit group repeats the steps, thereby soil is loosened in whole row, and the soil loosening plectrum 225 is in the inner chamber of pressure receiving ring piece 226 under the quasi-operating condition.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.