CN203051676U - Mechanical drive road roller multi-gear speed change system - Google Patents
Mechanical drive road roller multi-gear speed change system Download PDFInfo
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- CN203051676U CN203051676U CN 201320003960 CN201320003960U CN203051676U CN 203051676 U CN203051676 U CN 203051676U CN 201320003960 CN201320003960 CN 201320003960 CN 201320003960 U CN201320003960 U CN 201320003960U CN 203051676 U CN203051676 U CN 203051676U
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- clutch
- speed change
- control valve
- flow control
- gear
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Abstract
The utility model discloses a mechanical drive road roller multi-gear speed change system which comprises a hydraulic control device (10), a controller (11), a clutch pedal position sensor (2-1), a speed change lever position sensor (7-1) and a clutch stroke sensor (5-1), wherein a signal output end of the clutch pedal position sensor, a signal output end of the clutch stroke sensor and a signal output end of the speed change lever position sensor are respectively connected with the controller, the hydraulic control device comprises a flow control valve (10-1) and a check valve (10-2), the flow control valve and the check valve are arranged between a clutch master cylinder (3) and a clutch booster cylinder (4), and the flow control valve and the check valve are connected in parallel. According to the mechanical drive road roller multi-gear speed change system, impact on a gear device in a speed change mechanism due to rapid change of loads is avoided, the service life and durability of the mechanical drive road roller multi-gear speed change system are prolonged, abrasion of a clutch is reduced, and comfort of an operator is improved.
Description
Technical field
The utility model relates to a kind of engineering vehicle speed variator system, specifically is a kind of many gears of mechanical drive road roller speed variator system.
Background technique
At present, many gears of mechanical drive road roller speed variator system is mainly hand gear, it adopts clutch control system and the manual control speed change lever of oily top gas to carry out speed change mostly, its principle as shown in Figure 1, during work, the operator is by trampling the clutch pedal 2 that is installed in the road roller operator cabin, clutch pedal 2 drives clutch master cylinder 3, clutch master cylinder 3 passes to clutch power-assisted cylinder 4 with hydraulic pressure, clutch power-assisted cylinder 4 drives clutch 5 by pole, clutch 5 is disconnected, clutch 5 is thrown off engine power and gear 6, the manually-operable speed change lever 7 subsequently, make gear 6 finish the conversion of many gears, release the clutch pedal 2, clutch master cylinder 3 hydraulic oil reflux, pressure release resets, the air pressure that clutch power-assisted cylinder 4 is supplied with by its Returnning spring and gas receiver 8, clutch power-assisted cylinder 4 is resetted, and the air pressure that gas receiver 8 is supplied with is provided by air compressor 9, and clutch power-assisted cylinder 4 drives clutch 5 by pole, make clutch 5 combinations, and then engine power and gear 6 combinations, thereby transferring power is finished many gear switches speed change.
Because this cover system relies on driver's operating experience to control the stationarity of gearshift and starting purely, and strict training and the examination of process unlike driving a car of the driver of road roller, the ability steering vehicle, therefore, under the situation that new hand drives, mainly there are following problem in existing road roller speed change and clutch system:
1, in starting or gearshift procedure, the gearing in the gear is subjected to load shock causes its life-span and durability to reduce;
2, the road roller starting is not steady, and jitter phenomenon is arranged, and particularly when descending is started to walk, the situation of clutch often occurs battering down;
3, because starting is impacted greatly, the air pressure of clutch control and hydraulic oil pressure fluctuation are big, cause clutch master cylinder and servo-cylinder rate of fault height.
The model utility content
Problem at above-mentioned prior art existence, the utility model provides a kind of many gears of mechanical drive road roller speed variator system, make the mechanical drive road roller starting steadily, driver for the driving experience deficiency, control starting speed easily, thereby assurance gear middle gear device avoids being subjected to the impact jumpy of load, prolongs its life-span and durability, reduce the wearing and tearing of clutch, improve operator's travelling comfort.
To achieve these goals, many gears of the utility model mechanical drive road roller speed variator system, comprise miniature fuel tank, clutch pedal, clutch master cylinder, clutch power-assisted cylinder, clutch, gear, speed change lever, gas receiver and air compression, miniature fuel tank is to the clutch master cylinder fuel feeding, clutch pedal drives clutch master cylinder, clutch master cylinder passes to clutch power-assisted cylinder with hydraulic pressure, clutch power-assisted cylinder drives clutch by pole, clutch makes engine power and gear combination or throws off, the air pressure that clutch power-assisted cylinder is supplied with by gas receiver resets clutch power-assisted cylinder, the air pressure that gas receiver is supplied with is provided by air compressor, also comprise hydraulic control device, controller, the clutch pedal position sensor, the MLP sensor, clutch stroke sensor, the clutch pedal position sensor, the signal output part of clutch stroke sensor and MLP sensor all is connected with controller, described hydraulic control device comprises flow control valve and one-way valve, flow control valve and one-way valve are arranged between clutch master cylinder and the clutch power-assisted cylinder, and flow control valve is in parallel with one-way valve.
The utility model also is provided with speed change gear, speed change gear comprises gear pump, liquid-filling valve group, energy storage apparatus and energy storage apparatus pressure transducer, the gear pump oil inlet end is connected with miniature fuel tank, gear pump oil transportation end is connected with energy storage apparatus through the liquid-filling valve group, set up an electromagnetism position control valve in the hydraulic control device and be connected with energy storage apparatus, energy storage apparatus pressure sensor signal output terminal is connected with controller.Automatic speed-changing system is set, can alleviates operator's operation intensity, improve the travelling comfort of operation, human engineering is better.
The utility model flow control valve is electric operated proportional flow control valve, also can select throttle valve or hydraulic control flow control valve for use.
The utility model has been set up hydraulic control device between clutch master cylinder and clutch power-assisted cylinder, in this device flow control valve is arranged, flow control valve can delay combination by solenoidoperated cluthes, and the one-way valve that passes through one-way throttle valve is realized the quick break function of clutch, the flow control valve of fluid in hydraulic control device in clutch power-assisted cylinder fluid chamber, make the clutch combination, the speed that electrical signal by controller control flow control valve can the solenoidoperated cluthes servo-cylinder resets, realize the slow combination of clutch or combination fast, to adapt to operator's custom; The place is provided with position transducer at clutch, after clutch disconnects fully, clutch position sensor passes to controller with signal, controller sends the signal that can shift gears and gives speed change lever, can the conversion gear, when clutch does not disconnect fully, speed change lever can not carry out gear shift, avoid in starting or gearshift procedure, the gearing of gear is subjected to load shock causes its life-span and durability to reduce, clutch abrasion, clutch power-assisted cylinder damages and starts to walk not steady, the generation of jitter phenomenon is arranged, reduce the wearing and tearing of clutch, improve operator's travelling comfort, make the human engineering enhancing of product, and improve the intelligent level of product.
Description of drawings
Fig. 1 is the prior art theory diagram;
Fig. 2 is theory diagram of the present utility model;
Fig. 3 is the utility model hydraulic control device schematic representation;
Fig. 4 is oily top gas clutch control system schematic diagram;
Fig. 5 is all-hydraulic clutch control system figure.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figures 2 and 3, many gears of the utility model mechanical drive road roller speed variator system, comprise miniature fuel tank 1, clutch pedal 2, clutch master cylinder 3, clutch power-assisted cylinder 4, clutch 5, gear 6, speed change lever 7, gas receiver 8 and air compression 9, miniature fuel tank 1 is to clutch master cylinder 3 fuel feeding, clutch pedal 2 drives clutch master cylinder 3, clutch master cylinder 3 passes to clutch power-assisted cylinder 4 with hydraulic pressure, clutch power-assisted cylinder 4 drives clutch 5 by pole, clutch 5 makes engine power and gear 6 combinations or throws off, the air pressure that clutch power-assisted cylinder 4 is supplied with by gas receiver 8 resets clutch power-assisted cylinder 4, and the air pressure that gas receiver 8 is supplied with is provided by air compressor 9; Also comprise hydraulic control device 10, controller 11, clutch pedal position sensor 2-1, MLP sensor 7-1, clutch stroke sensor 5-1, the signal output part of clutch pedal position sensor 2-1, clutch stroke sensor 5-1 and MLP sensor 7-1 all is connected with controller 11, described hydraulic control device 10 comprises flow control valve 10-1 and one-way valve 10-2, flow control valve 10-1 and one-way valve 10-2 are arranged between clutch master cylinder 3 and the clutch power-assisted cylinder 4, and flow control valve 10-1 is in parallel with one-way valve 10-2.
Further, the utility model also is provided with speed change gear, speed change gear comprises gear pump 12, liquid-filling valve group 13, energy storage apparatus 14 and energy storage apparatus pressure transducer 14-1, gear pump 12 oil inlet ends are connected with miniature fuel tank 1, gear pump 12 oil transportation ends are connected with energy storage apparatus 14 through liquid-filling valve group 13, set up an electromagnetism position control valve 10-3 in the hydraulic control device 10 and be connected with energy storage apparatus 14, energy storage apparatus pressure transducer 14-1 signal output part is connected with controller 11.Automatic speed-changing system is set, can alleviates operator's operation intensity, improve the travelling comfort of operation, human engineering is better.
The utility model flow control valve 10-1 is electric operated proportional flow control valve, also can select throttle valve or hydraulic control flow control valve for use.
Many gears of the utility model road roller mechanical electronic hydraulic speed variator system can have manual mode and two kinds of speed change patterns of automatic mode, and manual shift mode is preferential, carries out the purpose that SC sigmal control realizes that manual mode is preferential by 11 pairs of hydraulic control devices of controller 10.
Manual mode: the operator depresses clutch pedal 2; clutch pedal position sensor 2-1; signal is passed to controller 11; controller 11 sends control signal and gives hydraulic control device 10; make the electromagnetism position control valve 10-3 outage in the hydraulic control device 10; automatic shift mode is shielded; clutch master cylinder 3 is drawn fluid from miniature fuel tank 1; and by the one-way valve 10-2 in the hydraulic control device 10; promote clutch power-assisted cylinder 4; clutch power-assisted cylinder 4 drives clutch 5; clutch 5 is disconnected fast, and after clutch 5 disconnected fully, clutch position sensor 5-1 passed to controller 11 with signal; controller 11 sends the signal that can shift gears and gives speed change lever 7; can the conversion gear, this scheme is to guarantee that gearshift is to carry out under the state that clutch disconnects fully, reduces the wearing and tearing of clutch friction plate; prevent that the gear middle gear from occurring beating the tooth phenomenon, and protect clutch power-assisted cylinder.
After speed change lever 7 is finished changing gear, MLP sensor 7-1 passes to controller 11 with signal, controller 11 sends control signal to the flow control valve 10-1 in the hydraulic control device 10, adjust the through-current capacity of flow control valve 10-1, release the clutch pedal 2, the air pressure that clutch power-assisted cylinder 4 is supplied with by its Returnning spring and gas receiver 8, clutch power-assisted cylinder 4 is resetted, the air pressure of gas receiver 8 provides by air compressor 18, the flow control valve 10-1 of fluid in hydraulic control device 10 in clutch power-assisted cylinder 4 fluid chambeies, make clutch 5 combinations, the speed that electrical signal by controller 11 control flow control valve 10-1 can solenoidoperated cluthes servo-cylinder 4 resets, realize clutch 5 slow combination or combinations fast, to adapt to operator's custom.
Automatic mode: when complete machine is in automatic mode, automatic mode can feed back to controller 11 electrical signal, controller 11 sends control signal for hydraulic control device 10 then, electromagnetism position control valve 10-3 is got, the pressure that energy storage apparatus 14 will be accumulated is applied to clutch power-assisted cylinder 4 through electromagnetism position control valve 10-3, clutch power-assisted cylinder 4 drives clutch 5, clutch 5 is disconnected fast, after clutch 5 disconnects fully, clutch position sensor 5-1 passes to controller 11 with signal, controller 11 sends the signal that can shift gears and gives speed change lever 7, can the conversion gear, finish self shifter, get the electric time owing to set electromagnetism position control valve 10-3 in the controller 11, if long-time not gear shift or gearshift time exceed the setting value in the controller 11, the electromagnetism position control valve 10-3 in the hydraulic control device 10 just cuts off the power supply, and makes clutch 5 combinations; After speed change lever 7 is finished changing gear, MLP sensor 7-1 passes to controller 11 with signal, controller 11 sends control signal to flow control valve 10-1 and electromagnetism position control valve 10-3 in the hydraulic control device 10, adjust the through-current capacity of flow control valve 10-1, and electromagnetism position control valve 10-3 is cut off the power supply, after the electromagnetism position control valve 10-3 outage, to not have pressure and be applied to clutch power-assisted cylinder 4, the air pressure that clutch power-assisted cylinder 4 is supplied with by its Returnning spring and gas receiver 8, clutch power-assisted cylinder 4 is resetted, the air pressure of gas receiver 8 provides by air compressor 9, the flow control valve 10-1 of fluid in hydraulic control device 10 in clutch power-assisted cylinder 4 fluid chambeies, make clutch 5 combinations, the speed that electrical signal by controller 11 control flow control valve 10-1 can solenoidoperated cluthes servo-cylinder 4 resets, realize clutch 5 slow combination or combinations fast, the pressure that energy storage apparatus 14 is accumulated is to draw fluid by gear pump 12 from miniature fuel tank 1, and provide pressure by liquid-filling valve group 13 to energy storage apparatus 14, after the pressure of energy storage apparatus 14 reaches setting value, just stop to provide pressure to it, after the pressure of energy storage apparatus 14 is lower than setting value, energy storage apparatus pressure transducer 14-1 passes to controller 11 with signal, controller 11 sends control signal to liquid-filling valve group 13, makes gear pump 12 continue to provide pressure oil liquid to energy storage apparatus 14 through liquid-filling valve group 13.
As shown in Figure 4, the utility model can be realized the slow for function of clutch, and oily top gas clutch control system is to place flow control valve 10-1 to realize that clutch 5 is slow for function between its clutch master cylinder 3 and clutch power-assisted cylinder 4; And by the realization of the one-way valve 10-2 in the hydraulic control device 10 clutch 5 quick break functions, flow control valve 10-1 and one-way valve 10-2 parallel connection.
As shown in Figure 5, all-hydraulic clutch control system is to place flow control valve 10-1 to realize that clutch 5 is slow for function between its pressure regulator valve 15 and clutch power-assisted cylinder 4; And the one-way valve that passes through one-way throttle valve 16 is realized the quick break function of clutch.
Claims (3)
1. many gears of mechanical drive road roller speed variator system, comprise miniature fuel tank (1), clutch pedal (2), clutch master cylinder (3), clutch power-assisted cylinder (4), clutch (5), gear (6), speed change lever (7), gas receiver (8) and air compression (9), miniature fuel tank (1) is to clutch master cylinder (3) fuel feeding, clutch pedal (2) drives clutch master cylinder (3), clutch master cylinder (3) passes to clutch power-assisted cylinder (4) with hydraulic pressure, clutch power-assisted cylinder (4) drives clutch (5) by pole, clutch (5) makes engine power and gear (6) combination or throws off, the air pressure that clutch power-assisted cylinder (4) is supplied with by gas receiver (8) resets clutch power-assisted cylinder (4), the air pressure that gas receiver (8) is supplied with is provided by air compressor (9), it is characterized in that, also comprise hydraulic control device (10), controller (11), clutch pedal position sensor (2-1), MLP sensor (7-1), clutch stroke sensor (5-1), clutch pedal position sensor (2-1), the signal output part of clutch stroke sensor (5-1) and MLP sensor (7-1) all is connected with controller (11), described hydraulic control device (10) comprises flow control valve (10-1) and one-way valve (10-2), flow control valve (10-1) and one-way valve (10-2) are arranged between clutch master cylinder (3) and the clutch power-assisted cylinder (4), flow control valve (10-1)) in parallel with one-way valve (10-2).
2. a kind of many gears of mechanical drive road roller speed variator system according to claim 1, it is characterized in that, also be provided with speed change gear, speed change gear comprises gear pump (12), liquid-filling valve group (13), energy storage apparatus (14) and energy storage apparatus pressure transducer (14-1), gear pump (12) oil inlet end is connected with miniature fuel tank (1), gear pump (12) oil transportation end is connected with energy storage apparatus (14) through liquid-filling valve group (13), set up an electromagnetism position control valve (10-3) in the hydraulic control device (10) and be connected with energy storage apparatus (14), energy storage apparatus pressure transducer (14-1) signal output part is connected with controller (11).
3. a kind of many gears of mechanical drive road roller speed variator system according to claim 1 and 2 is characterized in that described flow control valve (10-1) is electric operated proportional flow control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320003960 CN203051676U (en) | 2013-01-06 | 2013-01-06 | Mechanical drive road roller multi-gear speed change system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320003960 CN203051676U (en) | 2013-01-06 | 2013-01-06 | Mechanical drive road roller multi-gear speed change system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203051676U true CN203051676U (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320003960 Expired - Lifetime CN203051676U (en) | 2013-01-06 | 2013-01-06 | Mechanical drive road roller multi-gear speed change system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203051676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089959A (en) * | 2013-01-06 | 2013-05-08 | 徐工集团工程机械股份有限公司 | Mechanical drive road-roller multi-gear speed control system |
-
2013
- 2013-01-06 CN CN 201320003960 patent/CN203051676U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089959A (en) * | 2013-01-06 | 2013-05-08 | 徐工集团工程机械股份有限公司 | Mechanical drive road-roller multi-gear speed control system |
| CN103089959B (en) * | 2013-01-06 | 2015-11-25 | 徐工集团工程机械股份有限公司 | A kind of mechanical drive road roller many gear speed-changings system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |
|
| CX01 | Expiry of patent term |