CN111642208A - Pressure sensing and protecting device for pushing fertilizer - Google Patents
Pressure sensing and protecting device for pushing fertilizer Download PDFInfo
- Publication number
- CN111642208A CN111642208A CN202010651505.XA CN202010651505A CN111642208A CN 111642208 A CN111642208 A CN 111642208A CN 202010651505 A CN202010651505 A CN 202010651505A CN 111642208 A CN111642208 A CN 111642208A
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- fertilizer
- rotating shaft
- pushing
- pressure sensing
- box body
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 120
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000009434 installation Methods 0.000 claims description 32
- 230000035939 shock Effects 0.000 claims description 9
- 239000006096 absorbing agent Substances 0.000 claims description 8
- 230000008447 perception Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000007480 spreading Effects 0.000 abstract description 7
- 230000007246 mechanism Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C17/00—Fertilisers or seeders with centrifugal wheels
- A01C17/003—Centrifugal throwing devices with a horizontal axis
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Fertilizing (AREA)
Abstract
A fertilizer pushing pressure sensing and protecting device belongs to the field of agricultural machinery. The fertilizer spreading device comprises a fertilizer box body, a fertilizer pushing plate, a fertilizer pushing hydraulic cylinder, a hydraulic control rotary valve, a spreading roller rotating shaft, a rotating shaft mounting sliding block, a pressure sensing device, a traction rope and a self-aligning bearing with a seat, wherein the fertilizer pushing plate is slidably mounted in the fertilizer box body, the fertilizer pushing hydraulic cylinder is mounted on the side wall of the fertilizer box body in a penetrating mode, the output end of the fertilizer pushing hydraulic cylinder is connected with the fertilizer pushing plate, the hydraulic control rotary valve is mounted on the outer wall of the fertilizer box body and is connected with the hydraulic control rotary valve, the spreading roller rotating shaft is mounted on the fertilizer box body through the self-aligning bearing with the seat and the rotating shaft mounting sliding block, the pressure sensing device is mounted on the rotating shaft mounting sliding block, and the pressure sensing device is connected with the. The invention aims to solve the problem that the fertilizer distributor is damaged under the thrust of the hydraulic cylinder, and is simple in structure, ingenious in design and suitable for popularization and use.
Description
Technical Field
The invention relates to a device for sensing and protecting fertilizer pushing pressure, and belongs to the field of agricultural machinery.
Background
In the practical application of the hydraulic pushing type organic fertilizer applicator, the hydraulic fertilizer pushing mechanism pushes the fertilizer at a set speed, so that under the condition that the fertilizer pushing speed is high or the fertilizer contains large blocks of fertilizer, the resistance of the spreading mechanism is increased frequently to cause shearing of safety bolts of a transmission system, the spreading roller stops working, the hydraulic fertilizer pushing mechanism continues to push the fertilizer backwards, and the fertilizer applicator is damaged under the strong pushing force of the hydraulic cylinder.
Therefore, need to provide a novel push away fertile pressure perception protection device urgently, realize under the quick fertile condition of pushing away, can the perception push away fertile pressure and then reduce the pneumatic cylinder and push away fertile speed, reduce and shed the mechanism and strike to can close hydraulic system under the inoperative condition of scattering the rotor, thereby reach and shed the even, broadcast the even and safety protection's of mechanism atress and broadcast and apply the purpose.
Disclosure of Invention
The present invention has been developed in order to solve the problem of the damage to the fertilizer applicator caused by the strong pushing force of the hydraulic cylinder in the case of a fast speed of the fertilizer pushing or a large block of fertilizer in the fertilizer, and a brief summary of the present invention is given below in order to provide a basic understanding of some aspects of the present invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention.
The technical scheme of the invention is as follows:
the utility model provides a push away fertile pressure perception and protection device, including the fertilizer box, push away the fertile board, push away fertile hydraulic cylinder, hydraulic control changes the valve, shed the roller axis of rotation, axis of rotation installation slider, pressure perception device, haulage rope and area seat self-aligning bearing, slidable mounting has the fertile board of pushing away in the fertilizer box, push away fertile hydraulic cylinder run through the lateral wall of installing at the fertilizer box, push away fertile hydraulic cylinder output and push away fertile board and be connected the installation, hydraulic control changes the valve and installs on the outer wall of fertilizer box, it changes the valve with hydraulic control to push away fertile hydraulic cylinder and establish and be connected, it installs on the fertilizer box through area seat self-aligning bearing and axis of rotation installation slider to shed the roller axis of rotation, pressure perception device installs on axis of rotation installation slider, pressure perception device passes through the haulage rope and is.
Preferably: the fertilizer box body side wall processing has the axis of rotation mounting groove, and axis of rotation installation slider slidable mounting is in the axis of rotation mounting groove, and the roller axis of rotation of scattering passes through the axis of rotation bearing to be installed in axis of rotation installation slider.
Preferably: pressure perception device is including removing the axle, a spring, the mount pad, stop nut and haulage rope fixed hook, the one end of removing the axle is installed on the pivot installation slider, processing has the removal axle mounting hole on the mount pad, the other end slidable mounting of removal axle is in removing the axle mounting hole, it has the screw thread to remove the processing of axle left side outer wall, stop nut screw-thread fit installs on the left removal of mount pad is epaxial, the cover is equipped with the spring on the removal axle between mount pad and the axis of rotation mounting groove, haulage rope fixed hook one end and mount pad fixed mounting, the haulage rope fixed hook other end is connected the installation with the haulage rope.
Preferably: the pressure sensing device further comprises a shock absorber, one end of the shock absorber is installed at the lower end of the installation seat, and the other end of the shock absorber is installed on the right side wall of the shaft installation groove.
Preferably: still include positioner, positioner installs in the left side bottom corner of fertilizer box, and the haulage rope passes through positioner's guide effect down to be connected with the hydraulic control rotary valve.
Preferably: the positioning device comprises a positioning wheel and a positioning support, the positioning support is installed at the corner of the bottom end of the left side of the fertilizer box body, the center of the positioning wheel is hinged to the positioning support, and the traction rope is slidably installed on the positioning wheel.
Preferably: and a throwing roller is arranged on the throwing roller rotating shaft.
Preferably: the hauling cable is a steel wire rope.
The invention has the following beneficial effects:
1. the hydraulic fertilizer pushing mode of the invention has no overload slipping protection characteristic of a chain plate fertilizer conveying mode, and the fertilizer conveying is stable, accurate and reliable;
2. the invention can avoid the situation that the fertilizer distributor adopting a hydraulic fertilizer pushing mode is damaged under the strong pushing force of the hydraulic cylinder;
3. the invention can lead the throwing roller to bear force uniformly when in work, effectively avoids overlarge impact load, improves the reliability of the whole machine work, effectively prolongs the service life of working parts such as throwing blades and the like, and can lead the fertilizer to be thrown more uniformly;
5. the fertilizer pushing pressure sensing and protecting device is simple in structure, ingenious in design, convenient to disassemble and assemble, firm in assembly and suitable for popularization and use.
Drawings
FIG. 1 is a top view of a push pressure sensing and protection device;
FIG. 2 is a partial cross-sectional view taken at I of FIG. 1;
FIG. 3 is a partial view taken from the direction A of FIG. 1;
FIG. 4 is a view partially in section B of FIG. 1;
FIG. 5 is a cross-sectional view of the mount;
FIG. 6 is a block diagram of a positioning device;
FIG. 7 is a schematic view of the rotation shaft of the throwing roller and the installation structure of the throwing roller;
in the figure, 1-a fertilizer box body, 2-a fertilizer pushing plate, 3-a fertilizer pushing hydraulic cylinder, 4-a hydraulic control rotary valve, 5-a throwing roller rotating shaft, 6-a rotating shaft mounting slide block, 7-a rotating shaft bearing, 8-a pressure sensing device, 9-a traction rope, 10-a self-aligning bearing with a seat, 11-a positioning device, 1-1-a rotating shaft mounting groove, 5-1-a throwing roller, 81-a moving shaft, 82-a spring, 83-a mounting seat, 84-a limiting nut, 85-a traction rope fixing hook, 86-a shock absorber, 87-a moving shaft mounting hole, 111-a positioning wheel and 112-a positioning support.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The connection mentioned in the invention is divided into fixed connection and detachable connection, the fixed connection is non-detachable connection and includes but is not limited to folding edge connection, rivet connection, bonding connection, welding connection and other conventional fixed connection modes, the detachable connection includes but is not limited to threaded connection, snap connection, pin connection, hinge connection and other conventional detachment modes, when the specific connection mode is not clearly limited, at least one connection mode can be found in the existing connection modes by default to realize the function, and the skilled person can select according to the needs. For example: the fixed connection selects welding connection, and the detachable connection selects hinge connection.
The first embodiment is as follows: the embodiment is described with reference to fig. 1-6, and the fertilizer pushing pressure sensing and protecting device of the embodiment comprises a fertilizer box body 1, a fertilizer pushing plate 2, a fertilizer pushing hydraulic cylinder 3, a hydraulic control rotary valve 4, a throwing roller rotating shaft 5, a rotating shaft mounting sliding block 6, a pressure sensing device 8, a traction rope 9 and a self-aligning bearing with a seat 10, wherein the fertilizer pushing plate 2 is slidably mounted in the fertilizer box body 1, the fertilizer pushing hydraulic cylinder 3 is installed on the side wall of the fertilizer box body 1 in a penetrating manner, the output end of the fertilizer pushing hydraulic cylinder 3 is connected with the fertilizer pushing plate 2, the hydraulic control rotary valve 4 is installed on the outer wall of the fertilizer box body 1, the fertilizer pushing hydraulic cylinder 3 is connected with the hydraulic control rotary valve 4, a hydraulic control system of a tractor is communicated with the hydraulic control rotary valve 4, an oil way/pipe of the fertilizer pushing hydraulic cylinder 3 is communicated with the cylinder body end of the fertilizer pushing hydraulic cylinder 3 through the hydraulic control rotary valve 4, the throwing roller rotating shaft 5 is installed on the fertilizer box body 1 through the self The pressure sensing device 8 is installed on the rotating shaft installation sliding block 6, the pressure sensing device 8 is connected with the hydraulic control rotary valve 4 through a traction rope 9, the rotating shaft installation sliding block 6 and the rotating shaft installation groove 1-1 are arranged, one end of the throwing roller rotating shaft 5 can move within a certain range, the pressure sensing device 8 is similar to a mechanism of a rear wheel shock absorption system of an automobile, the vibration frequency and amplitude of a floating shaft are reduced, fertilizer is arranged on the right side of the fertilizer pushing plate 2 in the fertilizer box body 1, the rotating shaft installation groove 1-1 is machined in the side wall of the fertilizer box body 1, the rotating shaft installation sliding block 6 is slidably installed in the rotating shaft installation groove 1-1, and the throwing roller rotating shaft 5 is installed in the rotating shaft installation sliding block 6 through.
The second embodiment is as follows: referring to fig. 1-6, the present embodiment is described, based on the first embodiment, a pressure sensing and protecting device for pushing fertilizer of the present embodiment, the pressure sensing device 8 includes a moving shaft 81, a spring 82, a mounting seat 83, a limit nut 84, a pull rope fixing hook 85 and a shock absorber 86, the right end of the moving shaft 81 penetrates through the left side wall of the rotating shaft mounting groove 1-1 and is mounted on the rotating shaft mounting slider 6, a moving shaft mounting hole 87 is formed on the mounting seat 83, the left side of the moving shaft 81 is slidably mounted in the moving shaft mounting hole 87, threads are formed on the outer wall of the left side of the moving shaft 81, the limit nut 84 is threadedly mounted on the moving shaft 81 on the left side of the mounting seat 83, the spring 82 is sleeved on the moving shaft 81 between the mounting seat 83 and the rotating shaft mounting groove 1-1, one end of the pull rope fixing hook 85 is fixedly mounted on the mounting seat 83, the other end of the pull, one end of the damper 86 is installed at the lower end of the installation base 83, and the other end of the damper 86 is installed on the right side wall of the shaft installation groove 1-1.
The third concrete implementation mode: the embodiment is described with reference to fig. 1 to fig. 6, and based on the first embodiment, the push fertilizer pressure sensing and protecting device of the embodiment further includes a positioning device 11, the positioning device 11 is installed at a corner of the bottom end of the left side of the fertilizer box body 1, the hauling rope 9 is slidably installed on the positioning device 11, and the positioning device 11 plays a role of sliding and limiting the hauling rope 9.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to fig. 6, and the positioning device 11 of the embodiment includes a positioning wheel 111 and a positioning bracket 112, the positioning bracket 112 is installed at a corner of the bottom end of the left side of the fertilizer box 1, the center of the positioning wheel 111 is hinged to the positioning bracket, and the traction rope 9 is slidably installed on the positioning wheel 111.
The fifth concrete implementation mode: the fertilizer pushing pressure sensing and protecting device of the embodiment is described with reference to fig. 1-6, the throwing roller 5-1 is arranged on the throwing roller rotating shaft 5, and when the fertilizer pushing pressure sensing and protecting device works, the throwing roller rotating shaft 5 drives the throwing roller 5-1 to rotate, so that fertilizer pushed by the fertilizer pushing plate 2 is thrown.
The sixth specific implementation mode: the embodiment is described with reference to fig. 1 to 6, and the traction rope 9 of the device for sensing and protecting the fertilizer pushing pressure is a steel wire rope, and the traction rope 9 pulls the control end of the hydraulic control rotary valve 4 to control the flow rate of the liquid output from the tractor to the fertilizer pushing hydraulic cylinder 3.
The seventh embodiment: the embodiment is described with reference to fig. 1 to 6, and the working process and principle of the push fertilizer pressure sensing and protecting device of the embodiment are as follows:
a rear power output shaft of the tractor drives a transmission system to drive a throwing roller rotating shaft 5 and a throwing roller 5-1 to rotate, meanwhile, a rear hydraulic output end of the tractor supplies oil to a fertilizer pushing hydraulic cylinder 3 through a hydraulic control rotary valve 4, the output end of the fertilizer pushing hydraulic cylinder 3 drives a fertilizer pushing plate 2 to perform fertilizer pushing action towards the right side, when fertilizer moving towards the right side is contacted with the throwing roller 5-1, blades on the throwing roller 5-1 continuously throw the fertilizer towards the right side, and dynamic balance is formed between the fertilizer pushing action and the throwing action;
if large hard blocks such as frozen fertilizer blocks, stones and the like exist in the fertilizer or the fertilizer pushing amount exceeds the throwing capacity of the throwing roller 5-1, the pressure of the fertilizer on the throwing roller 5-1 is increased, when the pressure is greater than the damping of a spring 82 in the pressure sensing device 8, one end of a rotating shaft 5 of the throwing roller provided with a rotating shaft mounting sliding block 6 is pushed to move backwards in a rotating shaft mounting groove 1-1, a traction rope 9 connected to the pressure sensing device 8 is tensioned and drives a control end of a hydraulic control rotary valve 4 to rotate, the hydraulic flow output from a hydraulic output end of a tractor to a fertilizer pushing hydraulic cylinder 3 is reduced, the pushing speed of the fertilizer pushing hydraulic cylinder 3 is reduced, the impact on blades and a transmission system of the throwing roller 5-1 is reduced, and the fertilizer pushing hydraulic cylinder is prevented from being damaged;
in addition, under the extreme condition that the spreading roller 5-1 is damaged or does not work, if the fertilizer pushing hydraulic cylinder 3 drives the fertilizer pushing plate 2 to continuously push the fertilizer to the right side, the rotating shaft installation slide block 6 on the spreading roller rotating shaft 5 drives the pressure sensing device 8 and the traction rope 9 connected with the pressure sensing device to continuously move backwards under the pushing of the fertilizer, meanwhile, the traction rope 9 also pulls the control end of the hydraulic control rotary valve 4 to continuously rotate until the valve body of the hydraulic control rotary valve 4 is closed, and the fertilizer pushing hydraulic cylinder 3 stops pushing, so that the condition that the fertilizer spreader is damaged under the strong pushing force of the fertilizer pushing hydraulic cylinder 3 is avoided.
It should be noted that, in the above embodiments, as long as the technical solutions can be aligned and combined without contradiction, those skilled in the art can exhaust all possibilities according to the mathematical knowledge of the alignment and combination, and therefore, the present invention does not describe the technical solutions after alignment and combination one by one, but it should be understood that the technical solutions after alignment and combination have been disclosed by the present invention.
This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.
Claims (8)
1. The utility model provides a push up fertile pressure perception and protection device which characterized in that: comprises a fertilizer box body (1), a fertilizer pushing plate (2), a fertilizer pushing hydraulic cylinder (3), a hydraulic control rotary valve (4), a throwing roller rotating shaft (5), a rotating shaft mounting slide block (6), a pressure sensing device (8), a traction rope (9) and a self-aligning bearing with a seat (10), wherein the fertilizer pushing plate (2) is arranged in the fertilizer box body (1) in a sliding way, the fertilizer pushing hydraulic cylinder (3) is arranged on the side wall of the fertilizer box body (1) in a penetrating way, the output end of the fertilizer pushing hydraulic cylinder (3) is connected and mounted with the fertilizer pushing plate (2), the hydraulic control rotary valve (4) is arranged on the outer wall of the fertilizer box body (1), the fertilizer pushing hydraulic cylinder (3) is connected with the hydraulic control rotary valve (4), the throwing roller rotating shaft (5) is arranged on the fertilizer box body (1) through the self-aligning bearing with the seat (10) and the rotating shaft mounting slide block (6), the pressure sensing device (8) is arranged, the pressure sensing device (8) is connected with the hydraulic control rotary valve (4) through a traction rope (9).
2. The pressure sensing and protection device for pushing fertilizer as claimed in claim 1, wherein: a rotating shaft mounting groove (1-1) is formed in the side wall of the fertilizer box body (1), a rotating shaft mounting sliding block (6) is slidably mounted in the rotating shaft mounting groove (1-1), and a throwing roller rotating shaft (5) is mounted in the rotating shaft mounting sliding block (6) through a rotating shaft bearing (7).
3. The pressure sensing and protection device for pushing fertilizer as claimed in claim 2, wherein: the pressure sensing device (8) comprises a moving shaft (81), a spring (82), an installation seat (83), a limiting nut (84) and a traction rope fixing hook (85), one end of the moving shaft (81) is installed on a rotating shaft installation sliding block (6), a moving shaft installation hole (87) is processed on the installation seat (83), the other end of the moving shaft (81) is slidably installed in the moving shaft installation hole (87), threads are processed on the outer wall of the left side of the moving shaft (81), the limiting nut (84) is installed on the moving shaft (81) on the left side of the installation seat (83) in a threaded matching mode, the spring (82) is sleeved on the moving shaft (81) between the installation seat (83) and the rotating shaft installation groove (1-1), one end of the traction rope fixing hook (85) is fixedly installed with the installation seat (83), and the other end of the traction rope fixing hook (85) is connected with the traction rope (9).
4. The pressure sensing and protection device for pushing fertilizer as claimed in claim 3, wherein: the pressure sensing device (8) further comprises a shock absorber (86), one end of the shock absorber (86) is installed at the lower end of the installation seat (83), and the other end of the shock absorber (86) is installed on the right side wall of the shaft installation groove (1-1).
5. The pressure sensing and protection device for pushing fertilizer as claimed in claim 1, wherein: still include positioner (11), positioner (11) are installed in the left side bottom corner of fertilizer box (1), and haulage rope (9) are connected with hydraulic control rotary valve (4) under the guide effect through positioner (11).
6. The pressure sensing and protection device for pushing fertilizer as claimed in claim 5, wherein: the positioning device (11) comprises a positioning wheel (111) and a positioning support (112), the positioning support (112) is installed at the corner of the bottom end of the left side of the fertilizer box body (1), the center of the positioning wheel (111) is hinged to the positioning support, and the traction rope (9) is installed on the positioning wheel (111) in a sliding mode.
7. The pressure sensing and protecting device for pushing fertilizer as claimed in claim 1 or 2, wherein: the throwing roller rotating shaft (5) is provided with a throwing roller (5-1).
8. The pressure sensing and protection device for pushing fertilizer as claimed in claim 1, wherein: the traction rope (9) is a steel wire rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010651505.XA CN111642208A (en) | 2020-07-08 | 2020-07-08 | Pressure sensing and protecting device for pushing fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010651505.XA CN111642208A (en) | 2020-07-08 | 2020-07-08 | Pressure sensing and protecting device for pushing fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111642208A true CN111642208A (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010651505.XA Pending CN111642208A (en) | 2020-07-08 | 2020-07-08 | Pressure sensing and protecting device for pushing fertilizer |
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| Country | Link |
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| CN (1) | CN111642208A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709719A (en) * | 2021-01-04 | 2021-04-27 | 黑龙江省农业机械工程科学研究院 | Hydraulic propulsion system of spreading machine |
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| CN2241583Y (en) * | 1994-12-27 | 1996-12-04 | 上海海暴机械有限公司 | pressure automatic controller for high-pressure water projecting equipment |
| US20090026284A1 (en) * | 2007-07-27 | 2009-01-29 | Peeters Kenneth J | Manure spreader with reverse flighting |
| CN104541718A (en) * | 2013-10-18 | 2015-04-29 | 定州四方诚信畜牧科技有限公司 | Hydraulic rear-push type fertilizer dispersing trolley |
| CN104838785A (en) * | 2015-06-03 | 2015-08-19 | 黑龙江省农业机械工程科学研究院 | Automatic quantity-variable dispersing machine for organic fertilizer |
| CN105863853A (en) * | 2016-06-06 | 2016-08-17 | 上海劲启清洁设备科技有限公司 | Gasoline engine cleaning machine pressure energy sensing linkage energy saving device |
| CN212588890U (en) * | 2020-07-08 | 2021-02-26 | 黑龙江省农业机械工程科学研究院 | Pressure sensing and protecting device for pushing fertilizer |
-
2020
- 2020-07-08 CN CN202010651505.XA patent/CN111642208A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2241583Y (en) * | 1994-12-27 | 1996-12-04 | 上海海暴机械有限公司 | pressure automatic controller for high-pressure water projecting equipment |
| US20090026284A1 (en) * | 2007-07-27 | 2009-01-29 | Peeters Kenneth J | Manure spreader with reverse flighting |
| CN104541718A (en) * | 2013-10-18 | 2015-04-29 | 定州四方诚信畜牧科技有限公司 | Hydraulic rear-push type fertilizer dispersing trolley |
| CN104838785A (en) * | 2015-06-03 | 2015-08-19 | 黑龙江省农业机械工程科学研究院 | Automatic quantity-variable dispersing machine for organic fertilizer |
| CN105863853A (en) * | 2016-06-06 | 2016-08-17 | 上海劲启清洁设备科技有限公司 | Gasoline engine cleaning machine pressure energy sensing linkage energy saving device |
| CN212588890U (en) * | 2020-07-08 | 2021-02-26 | 黑龙江省农业机械工程科学研究院 | Pressure sensing and protecting device for pushing fertilizer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709719A (en) * | 2021-01-04 | 2021-04-27 | 黑龙江省农业机械工程科学研究院 | Hydraulic propulsion system of spreading machine |
| CN112709719B (en) * | 2021-01-04 | 2022-03-08 | 黑龙江省农业机械工程科学研究院 | Hydraulic propulsion system of spreading machine |
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