CN210566181U - Control oil source block of automatic transmission of agricultural machine - Google Patents
Control oil source block of automatic transmission of agricultural machine Download PDFInfo
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- CN210566181U CN210566181U CN201921603419.0U CN201921603419U CN210566181U CN 210566181 U CN210566181 U CN 210566181U CN 201921603419 U CN201921603419 U CN 201921603419U CN 210566181 U CN210566181 U CN 210566181U
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Abstract
The utility model discloses an agricultural machinery automatic gearbox control oil source block, including oil inlet port P, oil return port T, take the filter of bypass, liquid accuse switching-over valve, relief pressure valve, energy storage ware and two tee bend electromagnetic directional valves, oil inlet port P passes through hydraulic line and is connected with the oil inlet port of the filter of bypass, the oil outlet end of the filter of bypass is connected with the oil feed end of liquid accuse switching-over valve, the upper exit end of liquid accuse switching-over valve is connected with the oil feed end of relief pressure valve, the lower exit end of liquid accuse switching-over valve is connected with the oil feed end of energy storage ware, this agricultural machinery automatic gearbox control oil source block can realize the dual function of electro-hydraulic control gear shifting and forced lubrication, guarantee to shift gears speed stable in the process of shifting gears, preferentially guarantee to keep off the supply of pressure oil of fender position, guarantee not to lose the fender position, simultaneously greatly reduced driver's intensity of, the speed changing system is particularly suitable for the agricultural machinery speed changing system which is unmanned and remotely driven.
Description
Technical Field
The utility model relates to a derailleur technical field specifically is an agricultural machinery automatic gearbox control oil source piece.
Background
Traditional agricultural machinery relies on manual gear shifting basically, needs the driver to control the handle of shifting gears, realizes the process of shifting gears, and is high to driver's operation proficiency degree requirement, and intensity of labour is big.
The manual transmission is a traditional power transmission part, and moving parts of the manual transmission often work under high load, and are easy to generate faults due to the impact caused by frequent gear shifting and unreasonable operation. For example, during shifting, the transmission shift lever cannot be smoothly pushed into a corresponding gear, and when a vehicle goes up a slope or passes through a bumpy road, the transmission shift lever suddenly and automatically jumps from a certain gear to a neutral gear, so that power is interrupted or a problem of gear disorder exists.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to overcome current defect, provide an agricultural machinery automatic gearbox control oil source piece, can realize that electric liquid accuse shifts and force-feed lubrication's dual function, guarantee to shift the in-process shift speed stable, the priority is guaranteed to keep off a position and is supplied with pressure oil and not break off, ensures not to lose and keeps off a position, simultaneously greatly reduced driver's intensity of labour and proficiency, specially adapted unmanned, remote control driving's agricultural machinery variable speed system, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an agricultural machinery automatic gearbox control oil source piece, includes oil inlet port P, oil return port T, takes the filter of bypass, hydraulic control switching-over valve, relief pressure valve, energy storage ware and two tee bend electromagnetic directional valves, oil inlet port P passes through the hydraulic pressure pipeline and is connected with the oil inlet port of the filter of bypass, and the oil outlet end of the filter of taking the bypass is connected with the oil feed end of hydraulic control switching-over valve, and the second exit end of hydraulic control switching-over valve is connected with the oil feed end of relief pressure valve, and the upper exit end of hydraulic control switching-over valve is connected with the oil feed end of energy storage ware, and the oil outlet end of energy storage ware is connected with the second exit end of two tee bend electromagnetic directional valves, and the second exit end of two tee bend electromagnetic directional valves is connected with oil return port T, the input of two tee bend electromagnetic.
As an optimized technical scheme of the utility model, oil feed port P is connected with the filter of taking the bypass through the second check valve.
As an optimal technical scheme of the utility model, the upper exit end of hydraulic control switching-over valve is connected with the oil feed end of energy storage ware through the third check valve.
As an optimized technical scheme of the utility model, the oil outlet end of the filter with the bypass is also connected with a safety valve.
As an optimal technical scheme of the utility model, the oil feed end of the filter of taking the bypass is connected with emergent oil supply through first check valve.
As an optimal technical scheme of the utility model, oil feed port P, the filter of taking the bypass, hydraulic control switching-over valve and energy storage ware constitute the energy storage oil circuit.
As an optimal technical scheme of the utility model, oil feed port P, take filter, hydraulic control switching-over valve, energy storage ware and two tee bend electromagnetic directional valves of bypass constitute and keep off position fuel feeding oil circuit.
As an optimal technical scheme of the utility model, oil feed port P, the filter of taking the bypass, liquid accuse switching-over valve and relief pressure valve constitute lubricated oil circuit.
As an optimal technical scheme of the utility model, oil feed port P, the filter of taking the bypass and relief valve constitute the off-load oil circuit.
Compared with the prior art, the beneficial effects of the utility model are that: the agricultural automatic transmission control oil source block has reasonable design and precise structure, can realize double functions of electro-hydraulic control gear shifting and forced lubrication, can supply oil through a one-way valve of a bypass when a filter with the bypass is blocked, ensures that pressure oil for gear control and lubrication is not reduced and interrupted, effectively protects the safety of a transmission and an operator, has the function of a priority valve, preferentially ensures that the pressure oil is supplied to a gear oil supply oil path, ensures that the gear is not lost, ensures that power transmission is not interrupted, can realize gear control oil supply and emergency braking oil interruption to enable the transmission to be in neutral gear by arranging a two-position three-way electromagnetic directional valve to control an oil inlet path and an oil outlet path of hydraulic oil gear shifting, further effectively ensures the safety of equipment and personnel, and can reduce impact caused by direct oil supply and play roles of damping and shock absorption, The buffer function effectively ensures the stability of the work of the control oil source block.
Drawings
Fig. 1 is a schematic diagram of the principle of the present invention.
In the figure: the emergency oil supply system comprises a two-position three-way electromagnetic directional valve 1, an energy accumulator 2, a pressure reducing valve 3, a first one-way valve 4, a hydraulic control directional valve 5, a filter 6 with a bypass, a second one-way valve 7, a safety valve 8, a third one-way valve 9, a emergency oil source 10 and a safety valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a control oil source block of an agricultural machinery automatic transmission comprises an oil inlet port P, an oil return port T, a filter 6 with a bypass, a hydraulic control reversing valve 5, a pressure reducing valve 3, an energy accumulator 2 and a two-position three-way electromagnetic reversing valve 1, wherein the oil inlet port P is connected with the oil inlet port of the filter 6 with the bypass through a hydraulic pipeline, the oil inlet end of the filter 6 with the bypass is connected with an emergency oil source 10 through a first check valve 4, the oil inlet port P is connected with the filter 6 with the bypass through a second check valve 7, the arrangement of the first check valve 4, the second check valve 7 and the emergency oil source 10 can ensure that when a vehicle fails and cannot supply oil in time, oil can be supplied through the emergency oil source 10 to maintain the lubrication of the working parts of the vehicle and reduce the abrasion among the working parts, the oil outlet end of the filter 6 with the bypass is connected with the oil inlet end of the hydraulic control reversing valve 5, the oil outlet end of the filter 6 with the bypass is, the arrangement of the safety valve 8, when the hydraulic system fails, the safety valve 8 is in a passage to limit the highest pressure, so as to play a role of safety protection and ensure that a transmission is not damaged, the upper outlet end of the hydraulic control reversing valve 5 is connected with the oil inlet end of the energy accumulator 2 through the third one-way valve 9, the arrangement of the third one-way valve 9 ensures that the pressure in the energy accumulator 2 is constant, the shift control pressure is not influenced by the fluctuation of oil supply pressure, the lower outlet end of the hydraulic control reversing valve 5 is connected with the oil inlet end of the pressure reducing valve 3, the upper outlet end of the hydraulic control reversing valve 5 is connected with the oil inlet end of the energy accumulator 2, the oil outlet end of the energy accumulator 2 is connected with the lower inlet end of the two-position three-way electromagnetic reversing valve 1, the lower oil outlet end of the two-position three-way electromagnetic reversing valve 1 is connected with the oil return, the oil inlet port P, the filter 6 with the bypass, the hydraulic control reversing valve 5 and the energy accumulator 2 form an energy storage oil path, the oil inlet port P, the filter 6 with the bypass, the hydraulic control reversing valve 5, the energy accumulator 2 and the two-position three-way electromagnetic reversing valve 1 form a gear oil supply path, the oil inlet port P, the filter 6 with the bypass, the hydraulic control reversing valve 5 and the pressure reducing valve 3 form a lubricating oil path, and the oil inlet port P, the filter 6 with the bypass and the safety valve 8 form an unloading oil path.
When in use: the transmission oil source block is arranged between a fixed displacement oil pump and an electro-hydraulic control automatic transmission, a pressure oil source enters the oil source block from an oil inlet port P, flows to a filter 6 with a bypass valve through a second one-way valve 7, filters impurities in the pressure oil and improves the oil cleanliness, enters a third one-way valve 9 through a second lower position of a hydraulic control reversing valve 5, further supplies oil to and pressurizes an energy accumulator 2, when the oil pressure in the energy accumulator 2 reaches a set value, the hydraulic control reversing valve 5 is pushed to a working position by the thrust generated by the pressure oil, the liquid filling of the energy accumulator 2 is completed, and meanwhile, the transmission is forcedly lubricated under the action of a pressure reducing valve 3.
When gear shifting is not needed, the two-position three-way electromagnetic reversing valve 1 is returned to the second lower position by the spring force of the two-position three-way electromagnetic reversing valve 1, the oil inlet path is disconnected at the moment, the pressure of the energy accumulator 2 is maintained, and energy loss is avoided; meanwhile, gear control oil from an external transmission control valve group is communicated with an oil tank, and the transmission is kept in a neutral gear position; when gear shifting is needed, the electric control system sends a gear shifting signal to the electromagnetic end of the two-position three-way electromagnetic directional valve 1, so that the two-position three-way electromagnetic directional valve 1 is located at the upper position, oil is supplied to the external transmission gear control valve group, and the gear at the external transmission gear control valve group is controlled through the external transmission gear control valve group.
When the vehicle variable pump system has no fault, the pressure oil source supplies pressure oil to the system from the oil inlet port P, the second check valve 7 is in a conducting state, the first check valve 4 does not supply oil, and the oil is prevented from flowing through the first check valve 4; when the hydraulic oil can not be normally supplied to the system due to the hydraulic pump or the power failure thereof, the emergency oil source 10 supplies pressure oil to the system, the first one-way valve 4 is in a conducting state, the second one-way valve 7 is in a closed state, and at the moment, the emergency oil supplies oil to ensure the normal operation of lubrication and gears.
The utility model has reasonable design and precise structure, can realize the double functions of electro-hydraulic control gear shifting and forced lubrication, effectively protect the safety of the speed changer and operators, reduce the labor intensity and proficiency of drivers, is particularly suitable for the agricultural machinery speed change system of unmanned driving and remote control driving, and improves the use convenience; the hydraulic control reversing valve 5 is arranged to preferentially ensure that pressure oil is supplied to the gear oil supply oil path, so that the gear is not lost, the power transmission is not interrupted, and the use convenience is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an agricultural machinery automatic gearbox control oil source piece which characterized in that: comprises an oil inlet port P, an oil return port T, a filter (6) with a bypass, a hydraulic control reversing valve (5), a pressure reducing valve (3), an energy accumulator (2) and a two-position three-way electromagnetic reversing valve (1), the oil inlet port P is connected with an oil inlet port of a filter (6) with a bypass through a hydraulic pipeline, an oil outlet end of the filter (6) with the bypass is connected with an oil inlet end of a hydraulic control reversing valve (5), a second lower outlet end of the hydraulic control reversing valve (5) is connected with an oil inlet end of a pressure reducing valve (3), a first upper outlet end of the hydraulic control reversing valve (5) is connected with an oil inlet end of an energy accumulator (2), an oil outlet end of the energy accumulator (2) is connected with a second lower oil inlet end of a two-position three-way electromagnetic reversing valve (1), a second lower oil outlet end of the two-position three-way electromagnetic reversing valve (1) is connected with an oil return port T, the input end of the two-position three-way electromagnetic directional valve (1) is electrically connected with the output end of an external electric control system.
2. The agricultural automatic transmission control oil source block as claimed in claim 1, wherein: the oil inlet port P is connected with a filter (6) with a bypass through a second one-way valve (7).
3. The agricultural automatic transmission control oil source block as claimed in claim 1, wherein: and the upper outlet end of the hydraulic control reversing valve (5) is connected with the oil inlet end of the energy accumulator (2) through a third one-way valve (9).
4. The agricultural automatic transmission control oil source block as claimed in claim 1, wherein: the oil outlet end of the filter (6) with the bypass is also connected with a safety valve (8).
5. The agricultural automatic transmission control oil source block as claimed in claim 1, wherein: and the oil inlet end of the filter (6) with the bypass is connected with an emergency oil source (10) through a first one-way valve (4).
6. The agricultural automatic transmission control oil source block as claimed in claim 1, wherein: the oil inlet port P, the filter (6) with the bypass, the hydraulic control reversing valve (5) and the energy accumulator (2) form an energy accumulation oil path.
7. The agricultural automatic transmission control oil source block as claimed in claim 1, wherein: the oil inlet port P, the filter (6) with the bypass, the hydraulic control reversing valve (5), the energy accumulator (2) and the two-position three-way electromagnetic reversing valve (1) form a gear oil supply oil way.
8. The agricultural automatic transmission control oil source block as claimed in claim 1, wherein: and the oil inlet port P, the filter (6) with the bypass, the hydraulic control reversing valve (5) and the pressure reducing valve (3) form a lubricating oil path.
9. The agricultural automatic transmission control oil source block as claimed in claim 4, wherein: the oil inlet port P, the filter (6) with the bypass and the safety valve (8) form an unloading oil way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921603419.0U CN210566181U (en) | 2019-09-24 | 2019-09-24 | Control oil source block of automatic transmission of agricultural machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921603419.0U CN210566181U (en) | 2019-09-24 | 2019-09-24 | Control oil source block of automatic transmission of agricultural machine |
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| CN210566181U true CN210566181U (en) | 2020-05-19 |
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| CN201921603419.0U Active CN210566181U (en) | 2019-09-24 | 2019-09-24 | Control oil source block of automatic transmission of agricultural machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513472A (en) * | 2019-09-24 | 2019-11-29 | 洛阳智能农业装备研究院有限公司 | A kind of agricultural machinery automatic transmission control oil sources block |
| CN112696172A (en) * | 2020-11-03 | 2021-04-23 | 中国海洋石油集团有限公司 | Electro-hydraulic compound control underground decoding device and decoding method thereof |
-
2019
- 2019-09-24 CN CN201921603419.0U patent/CN210566181U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513472A (en) * | 2019-09-24 | 2019-11-29 | 洛阳智能农业装备研究院有限公司 | A kind of agricultural machinery automatic transmission control oil sources block |
| CN112696172A (en) * | 2020-11-03 | 2021-04-23 | 中国海洋石油集团有限公司 | Electro-hydraulic compound control underground decoding device and decoding method thereof |
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