CN110959325B - Side-shifting type three-point suspension device - Google Patents
Side-shifting type three-point suspension device Download PDFInfo
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- CN110959325B CN110959325B CN201911314972.7A CN201911314972A CN110959325B CN 110959325 B CN110959325 B CN 110959325B CN 201911314972 A CN201911314972 A CN 201911314972A CN 110959325 B CN110959325 B CN 110959325B
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- pull rod
- point suspension
- shifting
- upper pull
- limiting
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- 239000000725 suspension Substances 0.000 title claims abstract description 112
- 230000007246 mechanism Effects 0.000 claims abstract description 68
- 230000003287 optical effect Effects 0.000 claims abstract description 38
- 239000003921 oil Substances 0.000 claims description 48
- 239000010720 hydraulic oil Substances 0.000 claims description 9
- 241000196324 Embryophyta Species 0.000 description 7
- 239000002689 soil Substances 0.000 description 3
- 238000003971 tillage Methods 0.000 description 3
- 241000238631 Hexapoda Species 0.000 description 2
- 241000607479 Yersinia pestis Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- A01B59/00—Devices specially adapted for connection between animals or tractors and agricultural machines or implements
- A01B59/06—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors
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- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Agricultural Machines (AREA)
Abstract
The invention discloses a side-shifting three-point suspension device, which comprises a side plate, a sliding optical axis, a bracket, a side-shifting oil pipe, a three-point suspension bracket suspension arm, a side-shifting hydraulic cylinder, a second sliding optical axis, a three-point suspension bracket middle frame, a lifting arm mechanism lower pull rod mechanism, an upper pull rod mechanism and a connecting plate, wherein two ends of the first sliding optical axis and the second sliding optical axis are fixed on the side plate; one end of the side shifting oil pipe is connected with the side shifting hydraulic cylinder, and the other end of the side shifting oil pipe is connected with an oil cylinder of the agricultural machine; the three-point suspension bracket middle frame is in sliding connection with the first sliding optical axis and the second sliding optical axis through the three-point suspension bracket suspension arm; one end of the side-shifting hydraulic cylinder is connected with the side plate, the other end of the side-shifting hydraulic cylinder is connected with the middle frame of the three-point suspension bracket, and the hydraulic rod of the side-shifting hydraulic cylinder pushes the middle frame of the three-point suspension bracket to move left and right; the invention realizes the left-right movement of the three-point suspension device through the side-shifting hydraulic cylinder, sweeps out the cultivation dead zone, and has safer operation.
Description
Technical Field
The invention relates to agricultural machinery equipment, in particular to a side-shifting three-point suspension device.
Background
With the mechanized development of agriculture, the agricultural implement is widely applied to crop cultivation, which not only greatly saves manpower, but also improves cultivation efficiency. The common agricultural machine has traction type, semi-suspension type and suspension type, and is mainly used in China in a wide range of modes, namely traction type and suspension type, the traction type machine has a complex structure and poor maneuverability, and is mostly used for single-point hooking with a tractor; the suspended machine is suitable for dry farmland cultivation due to its light weight, good maneuverability and wide cultivation application range. However, the existing suspension type machine has a cultivation dead zone, for example, when a tractor is used for cultivating a field by using a three-point suspension device to be connected with a rotary cultivator, the three-point suspension device can only move up and down and can not move left and right, if the tire of the agricultural machine is too close to a ditch for operation, the rear wheel of the tractor falls into the ditch as long as the operation is slightly careless, and danger is easy to occur, so that weeds close to the ditch cannot be cultivated by rotary cultivation for ensuring safety, and besides, the soil beside the roadside, the tractor-cultivated road and the ditch cannot be cultivated by rotary cultivation, so that the utilization rate of the soil is reduced, and the diffusion of weeds and plant diseases and insect pests is also increased.
Therefore, the structure of the three-point suspension device needs to be improved, chinese patent document CN205040191U discloses a three-point suspension device and an agricultural vehicle with the same, and the agricultural vehicle with the three-point suspension device can be connected with various working machines in a hanging manner, including a hanging mounting frame, a lifting device and a driving part, wherein the lifting device comprises an upper hanging piece for hanging the upper part of the working machine and a lower hanging component for hanging the lower part of the working machine, the lower hanging component comprises left and right lifting arms which are symmetrically arranged and are pivoted at one ends on the hanging mounting frame, a cross beam is fixedly connected between the left and right lifting arms, and the driving end of the driving part is rotationally connected with the cross beam. The technical problem that prior art's three-point linkage structure is complicated and appear damaging easily has been solved to this patent.
However, in the above-mentioned patent publication, the three-point suspension device on the farm machinery can only move up and down, and still does not realize the left and right movement, when the tractor is being used for hanging the rotary cultivator with the three-point suspension device and is close to the ditch farmland, the weeds close to the drainage ditch can not carry out the rotary tillage, the roadside, the machine farmland and the soil beside the ditch still do not have the rotary tillage, the land utilization rate is reduced, and the diffusion of weeds and plant diseases and insect pests is increased.
Disclosure of Invention
The invention aims to: the invention aims to provide a side-shifting three-point suspension device capable of moving left and right.
The technical scheme is as follows: the side plate is fixed at two ends of the bracket, two ends of the first sliding optical axis and the second sliding optical axis are fixed on the side plate, and the first sliding optical axis and the second sliding optical axis are arranged in parallel; one end of the lifting arm oil pipe is connected with the lifting arm mechanism, and the other end of the lifting arm oil pipe is connected with an oil cylinder of the agricultural machine; one end of the side shifting oil pipe is connected with the side shifting hydraulic cylinder, and the other end of the side shifting oil pipe is connected with an oil cylinder of the agricultural machine; the middle frame of the three-point suspension bracket is positioned between the first sliding optical axis and the second sliding optical axis and is in sliding connection with the first sliding optical axis and the second sliding optical axis through the suspension arms of the three-point suspension bracket; one end of the side-shifting hydraulic cylinder is connected with the side plate, the other end of the side-shifting hydraulic cylinder is connected with the middle frame of the three-point suspension bracket, and the hydraulic rod of the side-shifting hydraulic cylinder pushes the middle frame of the three-point suspension bracket to move left and right; the lower pull rod mechanism is positioned at the end part of the suspension arm of the three-point suspension bracket below the middle frame of the three-point suspension bracket, and the upper pull rod mechanism is arranged on the middle frame of the three-point suspension bracket.
The side-shifting oil pipes are connected to the left end and the right end of the side-shifting hydraulic cylinder, hydraulic oil is output by the side-shifting oil pipe at the left end to push out the hydraulic rod, and the suspension arm of the three-point suspension bracket moves rightwards; and the side-shifting oil pipe at the right end outputs hydraulic oil to jack the hydraulic rod back to the original position, namely the suspension arm of the three-point suspension bracket moves leftwards.
The upper pull rod mechanism comprises an upper pull rod hanging joint, an upper pull rod hanging joint hole, a locking nut, an upper pull rod fixing plate, an upper pull rod fixing head, a connecting pin nut, a connecting pin and an upper pull rod connecting pipe, wherein the upper pull rod hanging joint hole is formed in the middle of the upper pull rod hanging joint; the upper pull rod hanging joint is connected with the upper pull rod connecting pipe, and the upper pull rod connecting pipe is connected with the upper pull rod fixing head through a threaded rod, and an upper pull rod locking nut is sleeved on the threaded rod; the upper pull rod fixing plates are provided with two middle frames which are arranged in parallel on the three-point suspension bracket, and the upper pull rod fixing head is positioned between the two parallel upper pull rod fixing plates; the upper pull rod fixing heads and the two upper pull rod fixing plates are respectively provided with a through hole, the connecting pins penetrate through the upper pull rod fixing heads and the through holes on the two upper pull rod fixing plates, two ends of each connecting pin are locked through connecting pin nuts, and the distance between the upper pull rod hanging joint and the upper pull rod fixing heads is adjusted by rotating the locking nuts and the upper pull rod connecting pipes.
Still include pull rod mechanism down, pull rod mechanism has two, be located pull rod mechanism's below both sides, pull rod mechanism down is including having the pull rod link that the through-hole, pull rod connecting pipe down, pull rod lock nut, threaded connection pole, fixed stay down between pull rod link and the pull rod connecting pipe down, all connect through the threaded connection pole between pull rod connecting pipe and the fixed stay down, the cover is equipped with pull rod lock nut on the threaded connection pole, changes the distance between pull rod link and the fixed stay through rotating pull rod connecting pipe and pull rod lock nut down.
The device comprises a bracket, a three-point suspension bracket hanging arm, a limiting mechanism, a fixing mechanism and a fixing mechanism, wherein the limiting mechanism comprises a fixed connecting plate, a limiting block, a limiting locking nut, a limiting connecting pipe and a limiting threaded rod, the fixed connecting plate forms a strip-shaped groove, one end of the groove is fixed on the bracket, the other end of the groove is fixed at the lower end of the three-point suspension bracket hanging arm, and the side face of the strip-shaped groove is flush with the side face of the three-point suspension bracket hanging arm; the limiting block is arranged in the groove and can slide left and right in the groove; the limiting locking nut is sleeved on the limiting threaded rod, and the distance between the fixing support post of the lower pull rod mechanism and the limiting block is changed by rotating the limiting locking nut and the limiting threaded rod.
The lifting arm mechanism and the lower pull rod fixing suspension arm are also included, the upper end of the lower pull rod fixing suspension arm is fixed on the middle frame of the three-point suspension bracket, and the lower end of the lower pull rod fixing suspension arm is fixed on the limiting mechanism; the lifting arm mechanism comprises a lifting arm connecting rod, a lifting arm connector and a lifting arm oil cylinder, one end of the lifting arm connecting rod is fixed on the lower pull rod fixing suspension arm, the other end of the lifting arm connecting rod is fixedly connected with the lifting arm connector, a fixing support column in the lower pull rod mechanism is fixedly connected with a hydraulic rod of the lifting arm oil cylinder, and the hydraulic rod drives the lower pull rod mechanism to move downwards.
The middle position of one side of the support, which is far away from the first sliding optical axis, is provided with a connecting plate, and a row of connecting holes for connecting the agricultural machine hanging mechanism are longitudinally formed at the edge of the connecting plate.
The support is provided with a bearing block between the three-point suspension support arms, the bearing block is provided with a through hole for the first sliding optical axis to pass through, and the bearing block can bear the main weight of the device.
The one end that lifting arm oil pipe, side shift oil pipe connect the agricultural machine is equipped with connects hydraulic pressure joint soon, realizes with the quick plug and the quick pull of agricultural machine hydraulic pressure interface, convenient operation.
The range of the left-right movement of the middle frame of the three-point suspension bracket is 0-50 cm, so that the cultivation requirement is met.
The beneficial effects are that: compared with the prior art, the invention has the beneficial effects that: (1) can move left and right, sweep out the dead zone of cultivation; (2) Can move up and down, and raise or lower the rotary cultivator or other tillage machinery according to actual needs; (3) The safety performance is high, weeds can be cleared without the need of the agricultural machine to be too close to a ditch, and the danger that the tires of the agricultural machine fall into water and the like is effectively avoided.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a rear view of the present invention;
FIG. 3 is a schematic view of the structure of the upper link mechanism of the present invention;
FIG. 4 is a schematic view of a pull-down rod mechanism according to the present invention;
FIG. 5 is a schematic view of a limiting mechanism according to the present invention;
Fig. 6 is a schematic structural view of a lifting arm mechanism in the present invention.
Detailed Description
The invention is further described below in conjunction with the detailed description and the accompanying drawings.
As shown in fig. 1 and 2, the invention comprises a side plate 1, a sliding optical axis 2, a lifting arm oil pipe 3, a bearing block 4, a bracket 5, a side shifting oil pipe 6, a quick-connection hydraulic joint 7, a three-point suspension bracket suspension arm 8, a side shifting hydraulic cylinder 9, a fixed locking mechanism 10, a second sliding optical axis 11, a three-point suspension bracket middle frame 12, a limiting mechanism 13, a lifting arm mechanism 14, a lower pull rod fixed suspension arm 15, a lower pull rod mechanism 16, an upper pull rod mechanism 17 and a connecting plate 18, and connecting holes 19, wherein the side plate 1 is fixed at two ends of the bracket 5, a round hole is formed in the side plate 1, two ends of the first sliding optical axis 2 and the second sliding optical axis 11 are fixed in the round hole of the side plate 1, and the first sliding optical axis 2 and the second sliding optical axis 11 are arranged in parallel; one end of the lifting arm oil pipe 3 is connected with the lifting arm mechanism 14, and the other end is connected with an oil cylinder of the agricultural machine; one end of the side-shifting oil pipe 6 is connected with the side-shifting hydraulic cylinder 9, the other end of the side-shifting oil pipe is connected with an oil cylinder of the agricultural machine, in the embodiment, one end of the lifting arm oil pipe 3 and the side-shifting oil pipe 6 connected with the agricultural machine is provided with a quick-connection hydraulic interface, and quick-connection and quick-pull of the hydraulic interface with the agricultural machine are realized, so that the operation is convenient. The support 5 is provided with a bearing block 4 between the three-point suspension support arms 8, the bearing block 4 is provided with a through hole for the first sliding optical axis 2 to pass through, and the bearing block can bear the main weight of the device.
The three-point suspension bracket middle frame 12 is positioned between the first sliding optical axis 2 and the second sliding optical axis 11, and is in sliding connection with the first sliding optical axis 2 and the second sliding optical axis 11 through the three-point suspension bracket suspension arm 8, the three-point suspension bracket suspension arm 8 is provided with two groups and is arranged at two ends of the three-point suspension bracket middle frame 12, and the three-point suspension bracket suspension arm 8 and the three-point suspension bracket middle frame 12 really form a V-shaped structure. The side plate 1 is provided with a connecting hole for connecting the side-shifting hydraulic cylinder 9, a hydraulic rod of the side-shifting hydraulic cylinder 9, which is close to one end of the side plate 1, is arranged in the connecting hole, the other end of the side-shifting hydraulic cylinder 9 is connected with the middle frame 12 of the three-point suspension bracket, the middle frame 12 of the three-point suspension bracket is overlapped with the axis of the side-shifting hydraulic cylinder 9, and the hydraulic rod of the side-shifting hydraulic cylinder 9 pushes the middle frame 12 of the three-point suspension bracket to move left and right; in the embodiment, the left-right movement range of the middle frame 12 of the three-point suspension bracket is 0-50 cm, so that the cultivation requirement is met. The lower pull rod mechanism 16 is positioned at the end of the three-point suspension bracket boom 8 below the three-point suspension bracket middle bracket 12, and the upper pull rod mechanism 17 is arranged on the three-point suspension bracket middle bracket 12. As shown in fig. 2, a connecting plate 18 is arranged in the middle of the side of the bracket 5 away from the first sliding optical axis 2, and a row of connecting holes 19 for connecting with the agricultural machine hanging mechanism are formed at the edge of the connecting plate 18 along the longitudinal direction.
As shown in fig. 1, two side-shifting oil pipes 6 are connected to the left end and the right end of the side-shifting hydraulic cylinder 9, the side-shifting oil pipe 6 at the left end outputs hydraulic oil to push out a hydraulic rod, and the three-point suspension bracket suspension arm 8 moves rightwards; the side-shifting oil pipe 6 at the right end outputs hydraulic oil to jack the hydraulic rod back to the original position, namely the three-point suspension bracket suspension arm 8 moves leftwards.
As shown in fig. 3, the upper pull rod mechanism 17 comprises an upper pull rod hanging joint 171, an upper pull rod hanging joint 172, a locking nut 173, an upper pull rod fixing plate 174, an upper pull rod fixing head 175, a connecting pin nut 176, a connecting pin 177, and an upper pull rod connecting pipe 178 with internal threads at both ends, wherein the middle of the upper pull rod hanging joint 171 is provided with an upper pull rod hanging joint 172; internal threads are respectively arranged at two ends of the upper pull rod connecting pipe 178, the upper pull rod hanging joint 171 and the upper pull rod connecting pipe 178, and the upper pull rod connecting pipe 178 and the upper pull rod fixing head 175 are connected through threaded rods, and upper pull rod locking nuts 173 are sleeved on the threaded rods; the upper pull rod fixing plates 174 are provided with two upper pull rod fixing heads 175 which are arranged in parallel on the middle frame 12 of the three-point suspension bracket, and are positioned between the two upper pull rod fixing plates 174; the length of the connecting pin 177 is greater than the distance between the two upper pull rod fixing plates 174, the two ends of the connecting pin 177 are provided with threads, the upper pull rod fixing head 175 and the two upper pull rod fixing plates 174 are provided with through holes, the connecting pin 177 penetrates through the upper pull rod fixing head 175 and the through holes on the two upper pull rod fixing plates 174, the two ends of the connecting pin 177 are locked through connecting pin nuts 176, and the distance between the upper pull rod hanging head 171 and the upper pull rod fixing head 175 is adjusted by rotating the locking nuts 173 and the upper pull rod connecting pipes 178.
As shown in fig. 4, two lower pull rod mechanisms 16 are located at two sides below the upper pull rod mechanism 17, the lower pull rod mechanism 16 comprises a lower pull rod hanging joint 161 with a through hole, a lower pull rod connecting pipe 162, a lower pull rod locking nut 163, a threaded connecting rod 164 and a fixing support 165, internal threads are arranged at two ends of the lower pull rod connecting pipe 162, the lower pull rod hanging joint 161 is connected with the lower pull rod connecting pipe 162, the lower pull rod connecting pipe 162 is connected with the fixing support 165 through the threaded connecting rod 164, the lower pull rod locking nut 163 is sleeved on the threaded connecting rod 164, and the distance between the lower pull rod hanging joint 161 and the fixing support 165 is changed by rotating the lower pull rod connecting pipe 162 and the lower pull rod locking nut 163.
As shown in fig. 5, the limiting mechanism 13 comprises a fixed connecting plate 131, a limiting block 132, a limiting locking nut 133, a limiting connecting pipe 134 and a limiting threaded rod 135, wherein the fixed connecting plate 131 forms a strip-shaped groove, one end of the groove is fixed on the bracket 5, the other end of the groove is fixed at the lower end of the three-point suspension bracket suspension arm 8, and the side surface of the strip-shaped groove is flush with the side surface of the three-point suspension bracket suspension arm 8; the limiting block 132 is arranged in the groove, and the limiting block 132 can slide left and right in the groove; the two ends of the limiting connecting pipe 13 are provided with internal threads, the limiting block 132 is connected with the limiting connecting pipe 134, the limiting connecting pipe 134 is connected with the fixed support 165 of the lower pull rod mechanism 16 through a limiting threaded rod 135, the limiting threaded rod 135 is sleeved with a limiting locking nut 133, and the distance between the fixed support 165 of the lower pull rod mechanism 16 and the limiting block 132 is changed by rotating the limiting locking nut 133 and the limiting threaded rod 135.
As shown in fig. 1 and 6, the upper end of the lower pull rod fixing suspension arm 15 is fixed on the middle frame 12 of the three-point suspension bracket, and the lower end is fixed on the limiting mechanism 13; the lifting arm mechanism 14 comprises a lifting arm connecting rod 141, a lifting arm connector 142 and a lifting arm oil cylinder 143, one end of the lifting arm connecting rod 141 is fixed on the lower pull rod fixing suspension arm 15, the other end of the lifting arm connecting rod is fixedly connected with the lifting arm connector 142, a fixing support column 165 in the lower pull rod mechanism 16 is fixedly connected with a hydraulic rod of the lifting arm oil cylinder 143, and the hydraulic rod drives the lower pull rod mechanism 16 to move downwards.
When in use, the device is firstly arranged on the hitching mechanism of the tractor; then, the upper link hitch 171 of the upper link mechanism 17 and the lower link hitch 161 of the two lower link mechanisms 16 are mounted on a rotary cultivator or other agricultural implement; secondly, the oil cylinder of the tractor conveys hydraulic oil to the lifting arm oil cylinder 143 through the lifting arm oil pipe 3, a hydraulic rod in the lifting arm oil cylinder 143 moves downwards, and the lifting arm mechanism 14 drops the rotary cultivator; when the rotary cultivator is lifted by the lifting arm mechanism 14, a hydraulic rod in the lifting arm oil cylinder 143 returns upwards to the original position, and hydraulic oil is output back to the oil cylinder of the tractor; finally, when the device needs to move left and right, the oil cylinder of the tractor conveys hydraulic oil to the lateral movement hydraulic cylinder 9 through the lateral movement oil pipe 6, and the hydraulic rod of the lateral movement hydraulic cylinder 9 pushes the middle frame 12 of the three-point suspension bracket to move left and right so as to drive the rotary cultivator to move left and right, thereby meeting the cultivation requirement.
Claims (4)
1. A side-shifting three-point suspension device, characterized in that: the side plate (1) is fixed at two ends of the support (5), the first sliding optical axis (2) and the second sliding optical axis (11) are fixed on the side plate (1), and the first sliding optical axis (2) and the second sliding optical axis (11) are arranged in parallel; one end of the lifting arm oil pipe (3) is connected with the lifting arm mechanism (14), and the other end of the lifting arm oil pipe is connected with an oil cylinder of the agricultural machine; one end of the side shifting oil pipe (6) is connected with a side shifting hydraulic cylinder (9), and the other end of the side shifting oil pipe is connected with an oil cylinder of the agricultural machine; the three-point suspension bracket middle frame (12) is positioned between the first sliding optical axis (2) and the second sliding optical axis (11), and is in sliding connection with the first sliding optical axis (2) and the second sliding optical axis (11) through the three-point suspension bracket suspension arm (8); one end of the side-shifting hydraulic cylinder (9) is connected with the side plate (1), the other end of the side-shifting hydraulic cylinder is connected with the middle frame (12) of the three-point suspension bracket, and a hydraulic rod of the side-shifting hydraulic cylinder (9) pushes the middle frame (12) of the three-point suspension bracket to move left and right; the lower pull rod mechanism (16) is positioned at the end part of the three-point suspension bracket suspension arm (8) below the three-point suspension bracket middle frame (12), and the upper pull rod mechanism (17) is arranged on the three-point suspension bracket middle frame (12);
The side-shifting oil pipes (6) are connected to the left end and the right end of the side-shifting hydraulic cylinder (9), the side-shifting oil pipe (6) at the left end outputs hydraulic oil to push out the hydraulic rod, and the three-point suspension bracket suspension arm (8) moves rightwards; the side-shifting oil pipe (6) at the right end outputs hydraulic oil to jack the hydraulic rod back to the original position, namely the three-point suspension bracket suspension arm (8) moves leftwards;
The upper pull rod mechanism (17) comprises an upper pull rod hanging joint (171), an upper pull rod hanging joint hole (172), a lock nut (173), an upper pull rod fixing plate (174), an upper pull rod fixing head (175), a connecting pin nut (176), a connecting pin (177) and an upper pull rod connecting pipe (178), wherein the upper pull rod hanging joint hole (172) is formed in the middle of the upper pull rod hanging joint (171); the upper pull rod hanging joint (171) is connected with the upper pull rod connecting pipe (178), and the upper pull rod connecting pipe (178) is connected with the upper pull rod fixing head (175) through a threaded rod, and an upper pull rod locking nut (173) is sleeved on the threaded rod; the upper pull rod fixing plates (174) are provided with two middle frames (12) which are arranged in parallel on the three-point suspension bracket, and the upper pull rod fixing heads (175) are positioned between the two parallel upper pull rod fixing plates (174); the upper pull rod fixing head (175) and the two upper pull rod fixing plates (174) are provided with through holes, a connecting pin (177) penetrates through the upper pull rod fixing head (175) and the through holes on the two upper pull rod fixing plates (174), two ends of the connecting pin (177) are locked through connecting pin nuts (176), and the distance between the upper pull rod hanging joint (171) and the upper pull rod fixing head (175) is adjusted by rotating the locking nuts (173) and the upper pull rod connecting pipes (178);
the lower pull rod mechanism (16) is arranged at two sides below the upper pull rod mechanism (17), the lower pull rod mechanism (16) comprises a lower pull rod hanging connector (161) with a through hole, a lower pull rod connecting pipe (162), a lower pull rod locking nut (163), a threaded connecting rod (164) and a fixed support (165), the lower pull rod hanging connector (161) is connected with the lower pull rod connecting pipe (162) and the lower pull rod connecting pipe (162) is connected with the fixed support (165) through the threaded connecting rod (164), the threaded connecting rod (164) is sleeved with the lower pull rod locking nut (163), and the distance between the lower pull rod hanging connector (161) and the fixed support (165) is changed by rotating the lower pull rod connecting pipe (162) and the lower pull rod locking nut (163);
The device comprises a bracket (5) and is characterized by further comprising a limiting mechanism (13), wherein the limiting mechanism (13) comprises a fixed connecting plate (131), a limiting block (132), a limiting lock nut (133), a limiting connecting pipe (134) and a limiting threaded rod (135), the fixed connecting plate (131) forms a strip-shaped groove, one end of the groove is fixed on the bracket (5), the other end of the groove is fixed at the lower end of the three-point suspension bracket suspension arm (8), and the side surface of the strip-shaped groove is flush with the side surface of the three-point suspension bracket suspension arm (8); the limiting block (132) is arranged in the groove, and the limiting block (132) can slide left and right in the groove; the limiting block (132) is connected with the limiting connecting pipe (134) and the limiting connecting pipe (134) is connected with the fixed support (165) of the lower pull rod mechanism (16) through a limiting threaded rod (135), the limiting threaded rod (135) is sleeved with a limiting locking nut (133), and the distance between the fixed support (165) of the lower pull rod mechanism (16) and the limiting block (132) is changed by rotating the limiting locking nut (133) and the limiting threaded rod (135);
The lifting device further comprises a lifting arm mechanism (14) and a lower pull rod fixing suspension arm (15), wherein the upper end of the lower pull rod fixing suspension arm (15) is fixed on the middle frame (12) of the three-point suspension bracket, and the lower end of the lower pull rod fixing suspension arm is fixed on the limiting mechanism (13); the lifting arm mechanism (14) comprises a lifting arm connecting rod (141), a lifting arm connector (142) and a lifting arm oil cylinder (143), one end of the lifting arm connecting rod (141) is fixed on the lower pull rod fixing suspension arm (15), the other end of the lifting arm connecting rod is fixedly connected with the lifting arm connector (142), a fixing support column (165) in the lower pull rod mechanism (16) is fixedly connected with a hydraulic rod of the lifting arm oil cylinder (143), and the hydraulic rod drives the lower pull rod mechanism (16) to move downwards;
A connecting plate (18) is arranged in the middle of one side, far away from the first sliding optical axis (2), of the support (5), and a row of connecting holes (19) for connecting an agricultural machine hanging mechanism are formed in the edge of the connecting plate (18) longitudinally.
2. The side-shifting three point suspension device of claim 1 wherein: the support (5) is provided with a bearing block (4) between the three-point suspension support arms (8), and the bearing block (4) is provided with a through hole for the first sliding optical axis (2) to pass through.
3. The side-shifting three point suspension device of claim 1 wherein: one end of the lifting arm oil pipe (3) and the side shifting oil pipe (6) connected with the agricultural machine is provided with a quick-connection hydraulic connector (7).
4. The side-shifting three point suspension device of claim 1 wherein: the left-right movement range of the middle frame (12) of the three-point suspension bracket is 0-50 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911314972.7A CN110959325B (en) | 2019-12-19 | 2019-12-19 | Side-shifting type three-point suspension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911314972.7A CN110959325B (en) | 2019-12-19 | 2019-12-19 | Side-shifting type three-point suspension device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110959325A CN110959325A (en) | 2020-04-07 |
| CN110959325B true CN110959325B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911314972.7A Active CN110959325B (en) | 2019-12-19 | 2019-12-19 | Side-shifting type three-point suspension device |
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| RU203730U1 (en) * | 2021-01-29 | 2021-04-19 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Башкирский государственный аграрный университет" | Tractor hitch |
| CN114323719B (en) * | 2021-12-14 | 2024-03-19 | 华中农业大学 | Seeder detects and test platform |
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