CN1068758C - Lifting structure of agricultural machine or implement - Google Patents
Lifting structure of agricultural machine or implement Download PDFInfo
- Publication number
- CN1068758C CN1068758C CN96121602A CN96121602A CN1068758C CN 1068758 C CN1068758 C CN 1068758C CN 96121602 A CN96121602 A CN 96121602A CN 96121602 A CN96121602 A CN 96121602A CN 1068758 C CN1068758 C CN 1068758C
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- China
- Prior art keywords
- hydraulic cylinder
- oil hydraulic
- wheel hub
- work
- fulcrum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/1006—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means the hydraulic or pneumatic means structurally belonging to the tractor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C11/00—Transplanting machines
- A01C11/02—Transplanting machines for seedlings
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
A working device lifting and lowering structure of a farm working machine liftably connecting a working device linked to the rear of a traveling machine body. A hydraulic cylinder 2 is installed over a support P1 connecting the upper link 7 in a quadruple link mechanism 3 to a machine body side and a support P4 for connecting a lower link 8 in the quadruple link mechanism 3 to a rear vertical link, th hydraulic cylinder 2 is installed to a quadruple link mechanism by pensile spring,and the quadruple link mechanism 3 is pulled up and raised by shortening operation of the hydraulic cylinder 2 and the quadruple link mechanism 3 is lowered by an extension operation of the hydraulic cylinder 2.
Description
The present invention relates to the lifting structure of agricultural mechanical operation device.This apparatus for work is by the quadric chain with the oil hydraulic cylinder lifting, can connect up and down with respect to the rear portion of traveling machine body.
Can enumerate the lifting structure of the seedling-transplanting device of rice transplanter as the representative of described agricultural machinery working device lifting structure.The lifting structure of this seedling-transplanting device is opened in the flat 8-70642 communique open the spy.Wherein, quadric chain is contained in the rear portion of traveling machine body, and the upper links and the body of cross-over connection quadric chain are being provided with oil hydraulic cylinder.On the rear link of quadric chain, connecting seedling-transplanting device (apparatus for work).And rise upper links and rising seedling-transplanting device (apparatus for work) by the elongation that makes oil hydraulic cylinder.Generally, owing between oil hydraulic cylinder and upper links, pendulum spring is installed, even the flexible halted state that is in of oil hydraulic cylinder also allows seedling-transplanting device how much to move up and down.
In the described lifting structure, when the operation device rises, compression load of effect on oil hydraulic cylinder.Therefore when setting the intensity of this oil hydraulic cylinder, be necessary to set for the degree that is not compressed load press-bending (buckle).For this reason, use big cylinder barrel of diameter and piston rod.The upper links of accepting in addition to push away on the oil hydraulic cylinder also will be used the sizable connecting rod of bending strength.Therefore, oil hydraulic cylinder not only, each parts of quadric chain also all adopt the big parts of large-scale weight.
In addition, in the described lifting structure, when the operation device was subjected to external impact force, this impulsive force just affacted on the pendulum spring by quadric chain.Therefore before the pooling feature performance of pendulum spring, the part of connecting rod can be owing to this impulsive force is out of shape.For fear of the generation of described thing, it is bigger just quadric chain need to be made rigidity.
When mobile, apparatus for work is the lifting state to general agricultural machinery on the road of field.When mobile, because the vibration of body and shaking, dynamic load often acts on the quadric chain.Therefore when design oil hydraulic cylinder intensity, consider these dynamic loads and set with regard to needs.
In addition, for the agricultural machinery of rice transplanter class, its apparatus for work (seedling-transplanting device) is rotatably to connect.And on such agricultural machinery, has locking mechanism.Prescribe a time limit when quadric chain rises to, locking mechanism can stop the rotation of apparatus for work or force to stop quadric chain to rise to higher height.Therefore be on the quadric chain of upper limit position and be added with the load that the locking mechanism active force constitutes.So, on oil hydraulic cylinder, just acting on and making making a concerted effort of load that apparatus for work rises and the load that making the locking mechanism action, so the capacity and the intensity of oil hydraulic cylinder will be done very greatly to make a concerted effort so that can bear this.
Main purpose of the present invention is by reasonably improveing quadric chain and driving oil hydraulic cylinder, makes the quadric chain lightweight, improves the durability of quadric chain simultaneously.
In order to reach described purpose, the invention provides a kind of lifting structure of apparatus for work of agricultural machinery, described apparatus for work is connected the rear portion of traveling machine body, the lifting of described apparatus for work is to cause that by oil hydraulic cylinder flexible the lifting of quadric chain carries out, simultaneously described quadric chain about have a pair of upper links and lower link and rear portion vertical connecting rod respectively, described oil hydraulic cylinder is to be connected across the fulcrum that connects described upper links and described traveling machine body and to connect between the fulcrum of described rear portion vertical connecting rod and described lower link, installs by pendulum spring; By the contraction of described oil hydraulic cylinder, described quadric chain rises, and on the other hand by the elongation of described oil hydraulic cylinder, described quadric chain descends.
According to structure of the present invention, on oil hydraulic cylinder, just acting on tensile load.Therefore when setting oil hydraulic cylinder intensity, with regard to the unnecessary intensity of buckling of considering.So only be subjected to the piston rod of the oil hydraulic cylinder of tensile strength can make minor diameter.Pendulum spring is configured on the position that can give full play to its pooling feature in addition.When therefore apparatus for work was subjected to external action, impulsive force acted directly on the pendulum spring, so alleviated the amount of deflection of connecting rod component parts.
On the oil hydraulic cylinder owing to be not compressed the effect of load, bend loading, so oil hydraulic cylinder can make minor diameter.Like this, comprise that all weight of quadric chain of oil hydraulic cylinder can alleviate, cost also descends thereupon.Pendulum spring can be brought into play cushioning effect effectively in addition, so can prevent the distortion and the breakage of quadric chain.So can obtain the structure of the agricultural machinery working elevator of light weight, quadric chain that durability is high.
When adopting structure recited above, upper links is subjected to that tensile load, lower link are compressed load, the rear portion vertical connecting rod is subjected to bend loading.Therefore for the upper links that just is added with tensile load, just needn't consider the problem of buckling.
On the upper links because the effect of load, bend loading by compression, so for upper links as long as consider that tensile strength is just passable.Upper links is done to achieve passable with thin or thin parts for this reason.As a result, can also further reduce cost so that comprise all lightweights of the quadric chain of oil hydraulic cylinder.
In the invention described above, the holding components that bears fixing described pendulum spring is to be contained between described fulcrum and described oil hydraulic cylinder, and its rear portion of lower link has wheel hub, vertical connecting rod its underpart, described rear portion has wheel hub, its two ends of described holding components have wheel hub, and these wheel hubs connect on independent fulcrum head lamp brush guard pivot ground.The load of oil hydraulic cylinder acts on the fulcrum that connects rear portion vertical connecting rod and lower link by holding components.Just, this sharing of load about after, act near the shaft end.Therefore, the situation that concentrates on the fulcrum middle part with the load of oil hydraulic cylinder relatively, the bend loading (moment) that is added on the fulcrum reduces.
In addition, when the fulcrum of connection rear portion vertical connecting rod and lower link and the fulcrum of holding components are provided with respectively, can expect between two fulcrums, can to bend and/or twist.This phenomenon can be overcome by two fulcrums are arranged on independent, the common fulcrum.
Because fulcrum is not subjected to big load, so can make the fulcrum of minor diameter.In addition owing to having avoided bending or moment of torsion, so the action of quadric chain can be carried out sleekly.
When elevator rose, because the vibration of body and/or shake, dynamic load can be added on the oil hydraulic cylinder., in structure of the present invention, make that the load that acts on the described oil hydraulic cylinder is structure and a lifting action scope of setting described four connecting rods along with the contraction of oil hydraulic cylinder with reducing.Along with the rising oil hydraulic cylinder of quadric chain shrinks,, when rising, quadric chain lacks during than decline so act on the static load on the oil hydraulic cylinder.For this reason, add up to for the load of cylinder can be not extreme increase.
Owing to reduced the load that is added in when elevator rises on the oil hydraulic cylinder, so can use the oil hydraulic cylinder littler than past intensity.This moment, the durability of oil hydraulic cylinder also improved.
As mentioned above, in the four-bar linkage structure of upper limit position,, be added with the load of spin locking making on the acting device on the load up.; in the present invention, the rear portion of described quadric chain can connect described apparatus for work rotationally, described lifting structure and then have rotary locking mechanism; the effect of this rotary locking mechanism is to rise in limited time when described four connecting rods, can mechanically stop the rotation of described apparatus for work.Because bar linkage structure itself rises, the cylinder load reduces, so the part of its minimizing offsets with the load that is added on the spin locking.So add up to get up load can not increase significantly for cylinder.
Its result, the change that is added in the load on the oil hydraulic cylinder that is between propradation and decline state relatively diminishes.The lifting of four-bar linkage structure can be carried out sleekly.The pressure oscillation that is used to drive the pressure circuit of oil hydraulic cylinder in addition also diminishes.So after the apparatus for work automatic lifting, when making apparatus for work keep certain height, can stablize control accurately for ground.
As mentioned above, in the present invention, on oil hydraulic cylinder, only be subjected to tensile load.In structure of the present invention, described upper links can be configured in the both sides about described oil hydraulic cylinder respectively, simultaneously on each of the pair of right and left longitudinal carrier portion of described traveling machine body, wheel hub is set, each front end in described upper links is provided with wheel hub, front end at described oil hydraulic cylinder is provided with the cardinal extremity wheel hub, insert single fulcrum on these wheel hubs, and each described wheel hub is inwardly outstanding, the described cardinal extremity wheel hub of described oil hydraulic cylinder is arranged on two wheel hubs movingly.At this moment, this tensile load is dispersed on the wheel hub of right and left upper connecting rod by the cardinal extremity wheel hub of oil hydraulic cylinder front end.The cardinal extremity wheel hub of oil hydraulic cylinder front end self is shorter., because this cardinal extremity wheel hub is outer being embedded on the wheel hub of right and left upper connecting rod, so be equivalent to have long wheel hub in fact.And, because independent fulcrum passes these wheel hubs, therefore to compare with the cardinal extremity wheel hub, tensile load is dispersed on the fulcrum mostly.Therefore act on tensile load on the oil hydraulic cylinder and be not concentrated in the central part of fulcrum, be dispersed on the fulcrum by long wheel hub in fact.
Utilize the wheel hub of right and left upper connecting rod, compare with the structure that tensile load is concentrated on an axle center, the moment of flexure that produces on fulcrum diminishes.Act on the big tensile load on the oil hydraulic cylinder in addition, can use than the fulcrum support of path in the past, and fulcrum is indeformable.This lightweight for quadric chain is very effective.
Other purpose of the present invention and action effect are on one side will be more readily apparent from by reading the following description with reference to accompanying drawing on one side.
The simple declaration of accompanying drawing
Fig. 1 is applicable to all end views of the rice transplanter of apparatus for work lifting structure of the present invention;
The end view of Fig. 2 quadric chain;
The plane of Fig. 3 quadric chain;
Fig. 4 represents the vertical view of having no progeny of the anterior fulcrum of quadric chain;
Fig. 5 represents the exploded perspective view of the anterior fulcrum structure of upper links;
The plane of Fig. 6 pendulum spring;
The side view of Fig. 7 rotary locking mechanism;
Fig. 8 represents the rear portion fulcrum of quadric chain and the vertical section rearview of rotary locking mechanism;
The rear portion fulcrum of Fig. 9 quadric chain and for investigate, illustration is at the brief end view of the load of oil hydraulic cylinder;
Figure 10 investigates, illustrates " oil cylinder load " change curve map with respect to " the oil cylinder length " of oil hydraulic cylinder.
Following with reference to the description of drawings embodiments of the invention.
Fig. 1 represents to plant the whole side of human-like rice transplanter (one of agricultural machinery).The traveling machine body of this rice transplanter is walked with four wheel drive.The rear portion of traveling machine body 1 is being provided with passes through the quadric chain 3 that oil hydraulic cylinder 2 can lifting.The rear portion of quadric chain 3 is connecting the seedling-transplanting device 4 (apparatus for work one example) of the 4 capable usefulness of planting.The 5th, the frame of traveling machine body 1.6 be arranged on frame 5 rear portions, the pair of right and left longitudinal carrier.Quadric chain 3 be by about a pair of, upper links 7 and lower link 8 and rear portion vertical connecting rod 9 constitute.
As shown in Figure 2, the front end of upper links 7 is pivotally to be connected on the longitudinal carrier 6 by fulcrum P1.The front end of lower link 8 by fulcrum P2 pivotally be connected frame 5 about.The rear end of upper links 7 is pivotally to be connected on the rear portion longitudinal carrier 9 by fulcrum P3.The rear end of lower link 8 pivotally is connected on the rear portion longitudinal carrier 9 by fulcrum P4.The bottom of rear portion longitudinal carrier 9 is provided with hub portion 10, is connecting seedling-transplanting device 4 on this hub portion 10.Seedling-transplanting device 4 can be around the axis X rotation of fore-and-aft direction.
Can illustrate in greater detail the present invention with reference to Fig. 3～Fig. 5 and Fig. 8.Upper links 7 is that pair of right and left is being provided with certain interval with thin square tube material system.Two upper links 7 are configured in 6 of left and right sides longitudinal carriers, connect by independent, shared fulcrum 11.Lower link 8 is made of the square tube material.Front end in each lower link 8 is welding wheel hub 8a.Wheel hub 8a is connected on the fulcrum 12.Be arranged on the rear portion of frame 5 left and right sides fulcrum 12 single armed shapes.Rear portion vertical connecting rod 9 is made by the sheet metal rapidoprint.Rear portion vertical connecting rod 9 has the cross section of " U " font of opening in the wings.The upper end that hub portion 10, the vertical wheel hub 9 in rear portion are being welded in the lower end of rear portion vertical connecting rod 9 connects, is fixing wheel hub 9a.7a is the wheel hub that is welded on upper links 7 rearward end.These wheel hubs 7a is being connected by fulcrum 13 with wheel hub 9a.8b is the wheel hub that is welded on the rear portion of left and right sides lower link 8.9b is the wheel hub that is welded on the bottom of rear portion vertical connecting rod 9.These wheel hubs 8b is connected by independent, shared fulcrum 14 with wheel hub 9b.
Oil hydraulic cylinder 2 is to use the single action type, shrinks by supplying with hydraulic oil.Oil hydraulic cylinder 2 is to constitute by cylinder barrel 2a with from the piston rod 2b that cylinder barrel 2a rearward extends.The front end of cylinder letter 2a is welding cardinal extremity wheel hub 2c.The leading section of cylinder barrel 2a pivotally is connected on the tie point of upper links 7 and longitudinal carrier 6.The leading section of cylinder barrel 2a just, upper links 7 and longitudinal carrier 6 shared fulcrum 11.In Fig. 5, this further is described.On the leading section of left and right sides upper links 7, connect, fixing wheel hub 7b.Two ends wheel hub 7b, inside opposite one another.The cardinal extremity wheel hub 2c of cylinder barrel 2a in these embeddings outside inner end tightens thickly.This kind state as shown in Figure 4, forms the left and right sides wheel hub 6a that is fixed on the longitudinal carrier, and the left and right sides wheel hub 7b of upper links 7 and the cardinal extremity 2c of cylinder barrel 2a are passed by independent, shared fulcrum.
During with reference to Fig. 2～Fig. 3 and Fig. 6～Fig. 7, the 15th, bear the fixedly holding components of pendulum spring 17.Holding components 15 as shown in Figure 3, the plane sees it is to bend to trapezoidal structure by banded sheet material.The two ends, the left and right sides of holding components 15 are connected on the fulcrum 14.Pendulum spring 17 is to be made of compression helical spring.
As shown in Figure 8, the two ends, the left and right sides of holding components 15 are provided with wheel hub 15a.Two wheel hub 15a all by the wheel hub 9b clamping of the wheel hub 8b of lower link 8 and rear portion vertical connecting rod 9.As shown in Figure 6, the central authorities of holding components 15 can pass the piston rod 2b of oil hydraulic cylinder 2 slidably.The 16th, spring washer, it is mounted in the end (passing the end of holding components 15) of piston rod 2b.Pendulum spring 17 is arranged between the central part of spring washer 16 and holding components 15.The 18th, axle sleeve, it is made by bearing metal material or plastics.By central portion the resistance to sliding that axle sleeve 18 can reduce piston rod 2b is set at holding components 15.Spring washer 16 can be by being installed in nut 19 adjusting positions on the piston rod 2b.By regulating the pooling feature that to adjust pendulum spring 17.
Lifting structure of the present invention as mentioned above.By the operation of control valve (not shown), behind the supply hydraulic oil, when oil hydraulic cylinder 2 shrank, quadric chain 3 rose in oil hydraulic cylinder 2, and seedling-transplanting device 4 rises.On the contrary, behind oil hydraulic cylinder 2 discharge hydraulic oil, when oil hydraulic cylinder 2 freely extended, quadric chain 3 descended, and seedling-transplanting device 4 descends because of its deadweight.On the quadric chain 3,, the surplus that how much moves up and down is arranged also even, exist in the scope in the flexible of pendulum spring 17 in the neutral condition (the contraction halted state of oil hydraulic cylinder 2) of oil hydraulic cylinder 2.
The sketch map of Fig. 9 load that is illustration on each connecting rod 7,8,9 of quadric chain 3 and oil hydraulic cylinder 2.Upper links 7 is being born tensile load, lower link 8 is that compression load, rear portion vertical connecting rod 9 are bend loadings, in addition, is acting on tensile load on the oil hydraulic cylinder 2.Therefore, it is just passable that the upper links 7 that just is subjected to the tensile load effect is used the stretched thin parts of load intensity of abilities.During design upper links 7, needn't consider the phenomenon of buckling.This also is same for design oil hydraulic cylinder 2.Because oil hydraulic cylinder just is added with tensile load, thus piston rod 2b diameter also can make minor diameter.
As mentioned above, the plan view of holding components 15 (with reference to Fig. 3) is slightly to be trapezoidal, and its two ends, left and right sides are connected on the fulcrum 14.Act on the load at the two ends, the left and right sides of holding components 15 at this moment from oil hydraulic cylinder 2, act near the end of fulcrum 14.Therefore, concentrate on fulcrum 14 middle part situations with the load of oil hydraulic cylinder 2 and compare, do not bear big bend loading (moment of torsion) on the fulcrum, thereby, fulcrum shaft 14 make minor diameter the axle just passable.
Below, with reference to Fig. 7 and Fig. 8, describe for a pair of rotary locking mechanism 20.Rotary locking mechanism 20 is arranged between the front portion of the rear end of lower link 8 and seedling-transplanting device 4.The effect of rotary locking mechanism 20 is when quadric chain 3 rises, and mechanically limits the rotation of seedling-transplanting device 4.
The front portion of seedling-transplanting device 4 is provided with frame plate 21.Carriage 22 is set about frame plate 21, on this carriage 22, passes and pin down bar 23.The upper end that pins down bar 23 is provided with accessory 23a, on the rear extension 8c that the slotted hole 24 and the pin 25 of this accessory 23a by fore-and-aft direction is connected described lower link 8.Pining down on the bar 23 movingly a pair of helical spring 26,27.The helical spring 26 of upside is positioned at the top of carriage 22, and the helical spring 27 of downside is positioned at the below of carriage 22.28 and 29 is spring-loaded packing rings.The upper end of the spiral 26 of spring-loaded packing ring 28 restriction fixed upper.29 restrictions of spring-loaded packing ring are the lower end of the helical spring 27 of downside fixedly.Spring-loaded packing ring 28 is fixed on and pins down on the bar 23.The above-below direction position of spring-loaded packing ring 29 can be regulated, so the position of the lower end of helical spring 27 can be regulated.
The action of the rotary locking mechanism 20 of described formation is as follows.Along with the rising of quadric chain 3, the rear extension 8c of lower link 8 shakes upward around fulcrum 14.Pin down for this reason bar 23 by drawing to the top.Under this state, quadric chain 3 near on it in limited time, about pin down bar 23 compression downsides helical spring 27 until each circle driving fit ground near (with reference to Fig. 8).Like this, 4 of seedling-transplanting devices can not simultaneously, can not carry out the vertical motion more than this around the axis X rotation of fore-and-aft direction.In addition, along with the lifting of quadric chain 3, pin 25 is in the fore-and-aft direction displacement.This displacement is absorbed by the slotted hole 24 of fore-and-aft direction, so it is roughly certain for the angle of carriage 22 to pin down bar 23.Such structure can prevent to pin down the bending that bar 23 passes carriage 22 positions.
Figure 10 represents the roughly change of the load of contraction, elongation (rising of rice transplanter device 4, decline) oil hydraulic cylinder along with oil hydraulic cylinder.As shown in figure 10, along with the rising of seedling-transplanting device 4, the load of oil hydraulic cylinder 2 reduces.
Such as already explained, on quadric chain 3, in limited time, add and be added with spin locking and upper limit locking load forcibly.As shown in figure 10, quadric chain 3 self, load is little when rising.Therefore universally, can not be subjected to king-sized load for oil hydraulic cylinder 2.
Claims (6)
1. the lifting structure of the apparatus for work of an agricultural machinery, described apparatus for work (4) is connected the rear portion of traveling machine body (1), the lifting of described apparatus for work (4) is to cause that by oil hydraulic cylinder (2) flexible the lifting of quadric chain (3) carries out, simultaneously described quadric chain (3) about have a pair of upper links (7) and lower link (8) and rear portion vertical connecting rod (9) respectively
It is characterized in that,
Described oil hydraulic cylinder (2) be connected across the fulcrum (P1) that connects described upper links (7) and described traveling machine body (1) and connect described rear portion vertical connecting rod (9) and the fulcrum (P4) of described lower link (8) between, install by pendulum spring (17);
By the contraction of described oil hydraulic cylinder (2), described quadric chain (3) rises, and on the other hand by the elongation of described oil hydraulic cylinder (2), described quadric chain (3) descends.
2. the lifting structure of the apparatus for work of agricultural machinery according to claim 1 is characterized in that, described pendulum spring (17) is installed on the described fulcrum (P4).
3. the lifting structure of the apparatus for work of agricultural machinery according to claim 2, it is characterized in that, the holding components (15) that bears fixing described pendulum spring (17) is to be contained between described fulcrum (P4) and described oil hydraulic cylinder (2), and its rear portion of lower link (8) has wheel hub (8b), described rear portion vertical connecting rod (9) its underpart has wheel hub (9b), its two ends of described holding components (15) have wheel hub (15a), and these wheel hubs (8b, 9b, 15a) connect on independent fulcrum (14) head lamp brush guard pivot ground.
4. according to the lifting structure of the apparatus for work of any one described agricultural machinery of claim 1～3, it is characterized in that, make that the load that acts on the described oil hydraulic cylinder (2) is structure and a lifting action scope of setting described four connecting rods (3) along with the contraction of oil hydraulic cylinder (2) with reducing.
5. the lifting structure of the apparatus for work of agricultural machinery according to claim 1, it is characterized in that, the rear portion of described quadric chain (3) can connect described apparatus for work (4) rotationally, described lifting structure and then have rotary locking mechanism (20), the effect of this rotary locking mechanism (20) is to rise in limited time when described four connecting rods (3), can mechanically stop the rotation of described apparatus for work (4).
6. the lifting structure of the apparatus for work of agricultural machinery according to claim 1, it is characterized in that, described upper links (7) is configured in the both sides about described oil hydraulic cylinder (2) respectively, simultaneously on each of the pair of right and left longitudinal carrier portion (6) of described traveling machine body (1), wheel hub (6a) is set, each front end in described upper links (7) is provided with wheel hub (7b), front end at described oil hydraulic cylinder (2) is provided with cardinal extremity wheel hub (2c), these wheel hubs (6a, 7b, 2c) go up insertion single fulcrum (11), and each described wheel hub (7b) is inwardly outstanding, and the described cardinal extremity wheel hub (2c) of described oil hydraulic cylinder (2) is arranged on two wheel hubs (7b) movingly.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP111640/1996 | 1996-05-02 | ||
| JP111640/96 | 1996-05-02 | ||
| JP11164196A JP3318195B2 (en) | 1996-05-02 | 1996-05-02 | Working device lifting structure of agricultural work machine |
| JP8111640A JPH09294409A (en) | 1996-05-02 | 1996-05-02 | Structure for lifting and lowering working device of farm working machine |
| JP111641/1996 | 1996-05-02 | ||
| JP111641/96 | 1996-05-02 | ||
| JP195846/1996 | 1996-07-25 | ||
| JP19584696A JP3274361B2 (en) | 1996-07-25 | 1996-07-25 | Working device lifting structure of agricultural work machine |
| JP195846/96 | 1996-07-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1164315A CN1164315A (en) | 1997-11-12 |
| CN1068758C true CN1068758C (en) | 2001-07-25 |
Family
ID=27312008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96121602A Expired - Lifetime CN1068758C (en) | 1996-05-02 | 1996-12-12 | Lifting structure of agricultural machine or implement |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100242256B1 (en) |
| CN (1) | CN1068758C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108937751A (en) * | 2018-07-28 | 2018-12-07 | 安徽南博机器人有限公司 | A kind of adjustable floor-cleaning machine of round brush |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2639790A1 (en) * | 1988-12-02 | 1990-06-08 | Rabewerk Clausing Heinrich | Tool for working the ground |
| JPH0870642A (en) * | 1994-09-09 | 1996-03-19 | Kubota Corp | Transplanting machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0161341B1 (en) * | 1995-06-23 | 1999-01-15 | 사공수영 | Polystyrene foam composition |
-
1996
- 1996-12-12 CN CN96121602A patent/CN1068758C/en not_active Expired - Lifetime
- 1996-12-16 KR KR1019960066092A patent/KR100242256B1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2639790A1 (en) * | 1988-12-02 | 1990-06-08 | Rabewerk Clausing Heinrich | Tool for working the ground |
| JPH0870642A (en) * | 1994-09-09 | 1996-03-19 | Kubota Corp | Transplanting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970073304A (en) | 1997-12-10 |
| CN1164315A (en) | 1997-11-12 |
| KR100242256B1 (en) | 2000-02-01 |
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