CN220286393U - Power gear shifting system - Google Patents
Power gear shifting system Download PDFInfo
- Publication number
- CN220286393U CN220286393U CN202321164147.5U CN202321164147U CN220286393U CN 220286393 U CN220286393 U CN 220286393U CN 202321164147 U CN202321164147 U CN 202321164147U CN 220286393 U CN220286393 U CN 220286393U
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- oil
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- 239000003921 oil Substances 0.000 claims abstract description 86
- 230000005540 biological transmission Effects 0.000 claims abstract description 54
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 230000001502 supplementing effect Effects 0.000 claims abstract description 12
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 9
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 4
- 239000002243 precursor Substances 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 229920000742 Cotton Polymers 0.000 description 8
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model belongs to the field of power shift transmission, and particularly relates to a power shift system which comprises an oil supply circuit module, a pressure regulating valve, a clutch control valve, a clutch body, a brake control valve, a brake body, a first gear transmission module, a second gear transmission module, a third gear transmission module, an engine module, a bidirectional variable pump, an oil supplementing pump module, a safety valve module, a precursor variable motor, a rear-drive variable motor, a hydraulic oil filtering module and a tractor complete machine module, wherein the oil supply circuit module is connected with the pressure regulating valve through a pipeline, and the pressure regulating valve is connected with the clutch control valve through a pipeline. The double-motor hydraulic transmission loop of the single variable pump mainly comprises a bidirectional variable pump and two variable motors which are connected in parallel, and power is output through the two motors. The two motor displacement forms certain difference, has fully played hydraulic double motor return circuit latent energy, has improved system torque conversion scope and transmission efficiency.
Description
Technical Field
The utility model relates to the field of power shift transmission, in particular to a power shift system.
Background
The power shift transmission technology is permeated into a plurality of fields, is continuously applied and developed in industries such as civil industry, machine tools, engineering machinery, metallurgical machinery, plastic machinery, agriculture and forestry machinery, automobiles, ships and the like, and is developed into a complete automatic technology including transmission, control and detection.
A power shift transmission has been developed in recent years as a new type of transmission, in which a shift position is changed by internal hydraulic power while a work vehicle is operated with a load without cutting off power.
During gear shifting of the cotton picker, huge reaction torque is transmitted to a vehicle due to inertia, and the oil temperature in the clutch is dynamically increased, so that the torque transmitted between friction elements is accompanied with certain torque fluctuation, thereby causing gear shifting impact.
The power shifting gearbox is very suitable for a low-speed high-power vehicle such as a cotton picker, and needs to be further researched in application of the self-propelled cotton picker, so that the hydraulic control system design, the analysis of segment changing quality, the improvement of the stability of the whole vehicle, the construction of a comprehensive test bed for the transmission performance of the power shifting gearbox and the like are carried out on the power shifting gearbox of agricultural equipment in China, the reasonable and independent intellectual property cotton picker power shifting gearbox is designed, and the power shifting gearbox can be enhanced and has great significance for modernization of agricultural machinery in China.
Disclosure of Invention
The utility model aims to provide a power gear shifting system which solves the problems of small torque conversion range and low transmission efficiency of the system.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a power gear shifting system, includes oil feed oil circuit module, air-vent valve, clutch control valve, clutch body, stopper control valve, stopper body, gear drive module I, gear drive module II, gear drive module III, engine module, two-way variable pump, oil supplementing pump module, relief valve module, precursor variable motor, back drive variable motor, hydraulic oil filtration module, tractor complete machine module, oil feed oil circuit module passes through the pipeline with the air-vent valve and is connected, the air-vent valve passes through the pipeline with the clutch control valve and is connected, engine module passes through the pipeline with two-way variable pump and is connected, two-way variable pump passes through the pipeline with oil supplementing pump module and is connected, oil supplementing pump module passes through the pipeline with the relief valve module and is connected, the hydraulic oil filtration module passes through the pipeline with back drive variable motor, back drive variable motor passes through the pipeline with tractor complete machine module and is connected with the stopper control valve, be connected with two-position electromagnetic proportional valve A through the main valve on the air-vent valve through the pipeline, two-position electromagnetic proportional valve A is connected with two-position electromagnetic valve B through the three-way electromagnetic valve on the two-position electromagnetic valve B through the three-way valve on the two-position electromagnetic valve A.
Preferably, the oil supply circuit module comprises a control valve oil supply pump, an oil supply pump filter and an oil supply circuit safety valve, wherein the control valve oil supply pump is connected with the oil supply pump filter through a pipeline, and the oil supply circuit safety valve is connected with the oil supply pump filter through a pipeline. And oil is supplied to the whole body through the oil supply circuit module.
Preferably, the clutch control valve comprises a two-position two-way electromagnetic pilot proportional valve A, a main valve two-position three-way valve B and a clutch piston. The clutch control valve can control the opening and closing of the oil way of the clutch.
Preferably, the first gear transmission module is connected with the second gear transmission module through a circuit, and the second gear transmission module is connected with the third gear transmission module through a circuit. The first gear transmission module, the second gear transmission module and the third gear transmission module jointly control speed change.
Preferably, the first gear transmission module is provided with a clutch body, and the second gear transmission module is provided with a brake body. The clutch body can control the transmission of the first gear transmission module, and the brake body can control the transmission of the second gear transmission module.
Preferably, the brake control valve comprises a two-position two-way electromagnetic pilot proportional valve C, a main valve two-position three-way valve D and a brake piston; the two-position two-way electromagnetic pilot proportional valve C is connected with the main valve two-position three-way valve D through a pipeline, and the brake piston is connected with the two-position two-way electromagnetic pilot proportional valve C through a pipeline. The oil way of the brake body can be controlled to be opened and closed by the arrangement of the brake control valve.
Preferably, the oil supplementing pump module comprises an oil supplementing pump body, a walking variable pump, a first check valve, a first overflow valve, a flushing valve, a rear-drive variable motor E, a front-drive variable motor F, a back pressure valve, an oil supplementing overflow valve, a second overflow valve and a second check valve. The oil supplementing pump module can automatically supplement oil to the clutch body and the brake body.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model mainly comprises a bidirectional variable pump and two variable motors which are connected in parallel, and the two motors output power through the variable. The two motor displacement forms certain difference, has fully played hydraulic double motor return circuit latent energy, has improved system torque conversion scope and transmission efficiency.
Drawings
FIG. 1 is a schematic diagram of a power shift system of the present utility model.
Fig. 2 is a schematic diagram of a single variable pump dual motor hydraulic transmission circuit of the present utility model.
In the figure: 1. an oil supply circuit module; 2. a pressure regulating valve; 3. a clutch control valve; 4. a two-position two-way electromagnetic pilot proportional valve A; 5. a main valve two-position three-way valve B; 6. a clutch piston; 7. a clutch body; 8. a first gear transmission module; 9. an engine module; 10. a bidirectional variable pump; 11. a supplemental oil pump module; 12. a safety valve module; 13. a precursor variable motor; 14. a hydraulic oil filtering module; 15. a rear-drive variable motor; 16. a tractor complete machine module; 17. a brake body; 18. a gear transmission module II; 19. a gear transmission module III; 20. a brake piston; 21. a main valve two-position three-way valve D; 22. a two-position two-way electromagnetic pilot proportional valve C; 23. a brake control valve; 24. an oil supply circuit safety valve; 25. a feed pump filter; 26. a control valve oil feed pump; 27. a supplemental oil pump body; 28. a walking variable pump; 29. a first check valve; 30. an overflow valve I; 31. a flush valve; 32. a rear-drive variable motor E; 33. a precursor variable motor F; 34. a back pressure valve; 35. an oil-compensating overflow valve; 36. an overflow valve II; 37. and a second check valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, a power shift system includes an oil supply circuit module 1, a pressure regulating valve 2, a clutch control valve 3, a clutch body 7, a brake control valve 23, a brake body 17, a first gear transmission module 8, a second gear transmission module 18, a third gear transmission module 19, an engine module 9, a bidirectional variable pump 10, a supplementary oil pump module 11, a safety valve module 12, a front driving variable motor 13, a rear driving variable motor 15, a hydraulic oil filter module 14, and a tractor complete machine module 16, wherein the oil supply circuit module 1 is connected with the pressure regulating valve 2 through a pipeline, the pressure regulating valve 2 is connected with the clutch control valve 3 through a pipeline, the engine module 9 is connected with the bidirectional variable pump 10 through a pipeline, the bidirectional variable pump 10 is connected with the supplementary oil pump module 11 through a pipeline, the supplementary oil pump module 11 is connected with the safety valve module 12 through a pipeline, the safety valve module 12 is connected with the front driving variable motor 13 through a pipeline, the front driving variable motor 13 is connected with the hydraulic oil filter module 14 through a pipeline, the rear driving variable motor 15 is connected with the tractor module 16 through a pipeline, the pressure regulating valve 2 is connected with the main valve 2 through a pipeline, the pressure regulating valve 23 is connected with the two-position electromagnetic valve 5 a pilot valve B through a two-position electromagnetic valve B, and the two-position electromagnetic valve B is connected with the two-position electromagnetic valve B on the two-position proportional valve 4.
Referring to fig. 1, the oil supply circuit module 1 includes a control valve oil supply pump 26, an oil supply pump filter 25, and an oil supply circuit relief valve 24, wherein the control valve oil supply pump 26 is connected to the oil supply pump filter 25 through a pipeline, and the oil supply circuit relief valve 24 is connected to the oil supply pump filter 25 through a pipeline. The oil supply is carried out for the whole through the oil supply oil circuit module 1, the clutch control valve 3 comprises a two-position two-way electromagnetic pilot proportional valve A4, a main valve two-position three-way valve B5 and a clutch piston 6, the oil circuit of the clutch can be controlled to be opened and closed through the clutch control valve 3, the first gear transmission module 8 is connected with the second gear transmission module 18 through a circuit, and the second gear transmission module 18 is connected with the third gear transmission module 19 through a circuit. The gear transmission module I8, the gear transmission module II 18 and the gear transmission module III 19 jointly control speed change, the gear transmission module I8 is provided with a clutch body 7, the gear transmission module II 18 is provided with a brake body 17, the clutch body 7 can control the transmission of the gear transmission module I8, the brake body 17 can control the transmission of the gear transmission module II 18, and the brake control valve 23 comprises a two-position two-way electromagnetic pilot proportional valve C22, a main valve two-position three-way valve D21 and a brake piston 20; the two-position two-way electromagnetic pilot proportional valve C22 and the main valve two-position three-way valve D21 are connected through pipelines, and the brake piston 20 is connected with the two-position two-way electromagnetic pilot proportional valve C22 through pipelines. By the arrangement of the brake control valve 23, the opening and closing of the oil passage of the brake body 17 can be controlled.
Referring to fig. 1 and 2, the oil compensating pump module 11 includes an oil compensating pump body 27, a traveling variable pump 28, a first check valve 29, a first relief valve 30, a flushing valve 31, a rear-drive variable motor E32, a front-drive variable motor F33, a back pressure valve 34, an oil compensating relief valve 35, a second relief valve 36, and a second check valve 37. The oil supplementing pump module 11 can automatically supplement oil to the clutch body 7 and the brake body 17.
The specific implementation process of the utility model is as follows: the clutch control valve 3 and the brake control valve 23 are respectively provided with a two-position two-way electromagnetic pilot proportional valve A4, a two-position two-way electromagnetic pilot proportional valve C22, a main valve two-position three-way valve B5 and a main valve two-position three-way valve D21, the oil supply oil circuit module 1 provides high-pressure oil to flow through two paths, namely the pressure regulating valve 2, the clutch control valve 3 and the brake control valve 23, after the high-pressure oil passes through the pressure regulating valve 2, the pressure of the high-pressure oil is reduced to 1MPa (the pressure amplitude of the oil supply oil circuit module 1 is 3 MPa), the high-pressure oil respectively flows through the two-position two-way electromagnetic pilot proportional valve A4 and the two-position two-way electromagnetic pilot proportional valve C22 through pipelines, when the two-position two-way electromagnetic pilot proportional valve A4 and the two-position two-way electromagnetic pilot proportional valve C22 act, low-pressure oil flows to the main valve two-position three-way valve B5 and the main valve two-position three-way valve D21, when the pressure is raised from 0 to a preset value which is enough to overcome the left spring force, the two-position three-way valve B5 and the main valve D21 are opened, the high-pressure oil channel is opened, the high-pressure oil immediately enters the clutch piston 6 and the brake piston 20, at this moment, the clutch 7 and the brake 17 act, and the disc set of the high-pressure oil is caused to act to control the high-pressure drive gear module 8 to rotate, and drive the gear module 18.
During driving, the clutch piston 6 and the brake piston 20 are operated simultaneously, and when a power shift occurs, the clutch control valve 3 and the brake control valve 23 are operated simultaneously. When one of the two control valves fills pressure oil into the relevant piston, the other control valve releases the pressure oil of the piston into the hydraulic oil tank, so that hydraulic impact of the clutch body 7 and the brake body 17 is reduced, the section change is more stable, and the gear shifting smoothness of the whole machine is improved.
The brake piston 20 and the clutch piston 6 are used for controlling the closing of the clutch body 7 and the brake body 17 by means of controllable elements: the clutch control valve 3 and the brake control valve 23 can obtain four different states of the transmission:
if the brake piston 20 and the clutch piston 6 are not operated, the cotton picker is in a neutral state;
if the brake piston 20 is filled with oil, the high speed high clutch piston 6 is deactivated and the cotton picker is located in the low speed zone.
If the low brake piston 20 is not actuated, the high clutch piston 6 is filled with oil and the cotton picker is in the high speed zone.
If both the low brake piston 20 and the high clutch piston 6 are filled with oil, the cotton picker is locked.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a power gear shifting system, including oil feed circuit module (1), air-vent valve (2), clutch control valve (3), clutch body (7), stopper control valve (23), stopper body (17), gear drive module one (8), gear drive module two (18), gear drive module three (19), engine module (9), two-way variable pump (10), make-up pump module (11), relief valve module (12), forerunner variable motor (13), back runner variable motor (15), hydraulic oil filter module (14), tractor whole machine module (16), oil feed circuit module (1) are connected with air-vent valve (2) through the pipeline, air-vent valve (2) are connected with clutch control valve (3) through the pipeline, engine module (9) are connected with two-way variable pump (10) through the pipeline, two-way variable pump (10) are connected with make-up pump module (11) through the pipeline, make-up pump module (11) are connected with relief valve module (12) through the pipeline, relief valve module (12) are connected with forerunner variable motor (13) through the pipeline, forerunner variable motor (14) are connected with hydraulic oil filter module (14) through the pipeline, the rear-drive variable motor (15) is connected with the whole tractor module (16) through a pipeline, a brake control valve (23) is connected to the pressure regulating valve (2) through a pipeline, a two-position two-way electromagnetic pilot proportional valve A (4) is connected to the pressure regulating valve (2) through a pipeline, a main valve two-position three-way valve B (5) is connected to the two-position two-way electromagnetic pilot proportional valve A (4) through a pipeline, and a clutch piston (6) is connected to the main valve two-position three-way valve B (5) through a pipeline.
2. A power shift system according to claim 1, wherein: the oil supply circuit module (1) comprises a control valve oil supply pump (26), an oil supply pump filter (25) and an oil supply circuit safety valve (24), wherein the control valve oil supply pump (26) is connected with the oil supply pump filter (25) through a pipeline, and the oil supply circuit safety valve (24) is connected with the oil supply pump filter (25) through a pipeline.
3. A power shift system according to claim 1, wherein: the clutch control valve (3) comprises a two-position two-way electromagnetic pilot proportional valve A (4), a main valve two-position three-way valve B (5) and a clutch piston (6).
4. A power shift system according to claim 1, wherein: the first gear transmission module (8) is connected with the second gear transmission module (18) through a circuit, and the second gear transmission module (18) is connected with the third gear transmission module (19) through a circuit.
5. A power shift system according to claim 1, wherein: the first gear transmission module (8) is provided with a clutch body (7), and the second gear transmission module (18) is provided with a brake body (17).
6. A power shift system according to claim 1, wherein: the brake control valve (23) comprises a two-position two-way electromagnetic pilot proportional valve C (22), a main valve two-position three-way valve D (21) and a brake piston (20); the two-position two-way electromagnetic pilot proportional valve C (22) is connected with the main valve two-position three-way valve D (21) through a pipeline, and the brake piston (20) is connected with the two-position two-way electromagnetic pilot proportional valve C (22) through a pipeline.
7. A power shift system according to claim 1, wherein: the oil supplementing pump module (11) comprises an oil supplementing pump body (27), a walking variable pump (28), a first check valve (29), a first overflow valve (30), a flushing valve (31), a rear-drive variable motor E (32), a front-drive variable motor F (33), a back pressure valve (34), an oil supplementing overflow valve (35), a second overflow valve (36) and a second check valve (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321164147.5U CN220286393U (en) | 2023-05-15 | 2023-05-15 | Power gear shifting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321164147.5U CN220286393U (en) | 2023-05-15 | 2023-05-15 | Power gear shifting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220286393U true CN220286393U (en) | 2024-01-02 |
Family
ID=89337611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321164147.5U Active CN220286393U (en) | 2023-05-15 | 2023-05-15 | Power gear shifting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220286393U (en) |
-
2023
- 2023-05-15 CN CN202321164147.5U patent/CN220286393U/en active Active
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