CN203583336U - Running hydraulic driving speed control system of milling machine - Google Patents
Running hydraulic driving speed control system of milling machine Download PDFInfo
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- CN203583336U CN203583336U CN201320536408.1U CN201320536408U CN203583336U CN 203583336 U CN203583336 U CN 203583336U CN 201320536408 U CN201320536408 U CN 201320536408U CN 203583336 U CN203583336 U CN 203583336U
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Abstract
The utility model discloses a running hydraulic driving speed control system of a milling machine. The running hydraulic driving speed control system comprises an oil tank, a sucked-back oil filter, a right rear travel motor, a left rear travel motor, a flow splitting control valve, a flow splitting, a left front travel motor, a right front travel motor, a travel pump and an oil replenishing pump, and also a rear wheel variable-speed control valve and a front wheel variable-speed control valve, wherein the port A1 of the rear wheel variable-speed control valve is connected to the ports X of the left rear travel motor and the right rear travel motor, respectively; the port A3 of the front wheel variable-speed control valve is connected with the ports X of the left front travel motor and the right front travel motor; the port S of the oil replenishing pump is connected to the oil tank through the sucked-back oil filter, and the port M3 of the oil replenishing pump is connected with the ports X and S of the flow-splitting valve and the port P of the front wheel variable-speed control valve. The running hydraulic driving speed control system of the milling machine has the beneficial effects that the operating speed of the whole machine at small milling depth or during galling work is effectively improved while enough traction is guaranteed, and furthermore, the operation efficiency of the milling machine is effectively improved.
Description
Technical field
The utility model relates to a kind of speed control system, specifically a kind of milling machine driving hydraulic-driven speed control system.
Background technology
Pavement milling machine is the special mechanical equipment of highways and urban roads maintenance work, and the excavation that is widely used in the asphalt concrete pavements such as highway, airport, harbour, parking lot is overhauled and the removing of pavement disease etc.At present, most milling machine walkings on market drive the Closed Hydraulic Driving system that generally adopts, generally, the working condition requirement milling machine of milling machine need arrange two grades of speed while working, for the lower work shelves of the speed of milling and plane operation with for the higher shelves that travel of the speed of high speed transition, but in Specific construction process, when the milling degree of depth is less or during plucking operation, need less tractive force and higher operating speed to improve car load operating efficiency, and the fluid power system of the milling machine of normal coupling walking at present, operating speed does not reach this requirement substantially, thereby cause the operating efficiency of car load to decline.
Summary of the invention
The problem existing for above-mentioned prior art, the utility model provides a kind of milling machine driving hydraulic-driven speed control system, the speed while improving the less or plucking operation of the milling degree of depth, and then improve the operating efficiency of milling machine.
To achieve these goals, the technical solution adopted in the utility model is: a kind of milling machine driving hydraulic-driven speed control system, comprises fuel tank, sucks back oil strainer, right back running motor, left back running motor, rear change control valve, front-wheel speed change control valve, shunting valve, flow divider, left front running motor, right front running motor, traveling pump and slippage pump;
The A mouth of described traveling pump is connected with the P mouth of flow divider, and the A of flow divider, B, C, D mouth access respectively the B mouth of the A mouth of the B mouth of the A mouth of right front running motor, left front running motor, left back running motor, right back running motor; Shunting valve is connected in flow divider;
The B mouth of access traveling pump after the A mouth of the B mouth of the A mouth of the B mouth of right front running motor, left front running motor, left back running motor, right back running motor connects;
The A2 mouth of brake control valve is connected with the K mouth of left front running motor, right front running motor respectively;
Also comprise rear change control valve and front-wheel speed change control valve;
The A1 mouth of rear change control valve is connected with the X mouth of left back running motor, right back running motor respectively;
The A3 mouth of front-wheel speed change control valve is connected with the X mouth of left front running motor, right front running motor respectively;
The S mouth of slippage pump is through sucking back oil strainer access fuel tank, and the M3 mouth of slippage pump is connected with the P mouth of X, S mouth and the front-wheel speed change control valve of flow divider respectively.
The utility model also comprises back work system, radiator, oil return piece and one way valve, 3. the mouth of access oil return piece after the T mouth of front-wheel speed change control valve is connected with the T mouth of flow divider, 1. the mouth of back work system access oil return piece, 2. the mouth of access oil return piece after the L mouth of left front running motor, right front running motor, left back running motor, right back running motor is connected with the L mouth of traveling pump, the 4. mouth of oil return piece takes back through radiator and one way valve the A mouth that sucks back oil strainer; Adopt this structure, be conducive to the heat radiation of fluid, further promoted the operating efficiency of this vibration hydraulic system.
Described shunting valve and flow divider are integrated valve block, can save space, control better effects if.
The utility model has increased a speed change control valve, and the fluid break-make by rear change control valve and two speed change control valves of front-wheel speed change control valve converts, and realizes the control of the car load speed of travel; Make car load increase by one between the gear between work shelves and walking shelves, the speed requirement when meeting milling machine and carrying out the deeply less or plucking operation of milling; The utility model is without the key component configuration that promotes vibration hydraulic system, when guaranteeing enough tractive force, effectively promotes the operating speed of car load when the dark less or plucking operation of milling, and then effectively improves the operating efficiency of milling machine.
Accompanying drawing explanation
Fig. 1 is hydraulic principle schematic diagram of the present utility model.
In figure: 1, fuel tank, 2, suck back oil strainer, 3, right back running motor, 4, left back running motor, 5, rear change control valve, 6, brake control valve, 7, front-wheel speed change control valve, 8, shunting valve, 9, flow divider, 10, left front running motor, 11, right front running motor, 12, traveling pump, 13, slippage pump, 14, back work system, 15, radiator, 16, oil return piece, 17, one way valve.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1: the utility model comprises fuel tank 1, sucks back oil strainer 2, right back running motor 3, left back running motor 4, rear change control valve 5, front-wheel speed change control valve 7, shunting valve 8, flow divider 9, left front running motor 10, right front running motor 11, traveling pump 12 and slippage pump 13;
The A mouth of described traveling pump 12 is connected with the P mouth of flow divider 9, the A of flow divider 9, B, C, D mouth access respectively the A mouth of right front running motor 11, the A mouth of the B mouth of left front running motor 10, left back running motor 4, the B mouth of right back running motor 3; Shunting valve 8 is connected in flow divider 9;
The B mouth of access traveling pump 12 after the B mouth of right front running motor 11, the A mouth of left front running motor 10, the B mouth of left back running motor 4, the A mouth of right back running motor 3 connect;
The A2 mouth of brake control valve 6 is connected with the K mouth of left front running motor 10, right front running motor 11 respectively;
Also comprise rear change control valve 5 and front-wheel speed change control valve 7;
The A1 mouth of rear change control valve 5 is connected with the X mouth of left back running motor 4, right back running motor 3 respectively;
The A3 mouth of front-wheel speed change control valve 7 is connected with the X mouth of left front running motor 10, right front running motor 11 respectively;
The S mouth of slippage pump 13 is through sucking back oil strainer 2 access fuel tanks 1, and the M3 mouth of slippage pump 13 is connected with the P mouth of X, S mouth and the front-wheel speed change control valve 7 of flow divider 9 respectively.
Also comprise back work system 14, radiator 15, oil return piece 16 and one way valve 17,3. the mouth of access oil return piece 16 after the T mouth of front-wheel speed change control valve 7 is connected with the T mouth of flow divider 9,1. the mouth of back work system 14 access oil return pieces 16,2. the mouth of access oil return piece 16 after the L mouth of left front running motor 10, right front running motor 11, left back running motor 4, right back running motor 3 is connected with the L mouth of traveling pump 12, the 4. mouth of oil return piece 16 takes back through radiator 15 and one way valve 17 the A mouth that sucks back oil strainer 2.
Described shunting valve 8 and flow divider 9 are integrated valve block.
The utility model in the course of the work, slippage pump 13 passes through M3 mouth respectively to trailing wheel speed change control valve 5, brake control valve 6, front-wheel speed change control valve 7 and shunting valve 8 fuel feeding, by controlling respectively front and rear wheel running motor speed change, to realize car load velocity transformation.Before car load starts, the electromagnetic coil Y3 power-off of the electromagnetic coil Y1 power-off of rear change control valve 5, the electromagnetic coil Y2 power-off of brake control valve 6, front-wheel speed change control valve 7, the electromagnetic coil Y3 power-off of shunting valve 8, when milling machine carries out the dark operation of less milling or plucking operation, the electromagnetic coil Y1 power-off of rear change control valve 5, the electromagnetic coil Y2 energising of brake control valve 6, the electromagnetic coil Y3 energising of front-wheel speed change control valve 7, the electromagnetic coil Y3 power-off of shunting valve 8, traveling pump 12 passes through flow divider 9 difference front running motor 10 left, left back running motor 4, right front running motor 11, right back running motor 3 fuel feeding, slippage pump 13 passes through M3 mouth to brake control valve 6 and front-wheel speed change control valve 7 fuel feeding, first remove car load braking, control left front running motor 10 simultaneously, right front running motor 11 becomes large displacement condition, left back running motor 4, right back running motor 3 is still in original small displacement state, car load is when guaranteeing tractive force demand, make car load operating speed between former work shelves speed and travel between grade speed, operating speed has remarkable lifting, and then effectively improved the operating speed of milling machine when the dark less or plucking operation of milling.
Claims (3)
1. a milling machine driving hydraulic-driven speed control system, comprises fuel tank (1), sucks back oil strainer (2), right back running motor (3), left back running motor (4), rear change control valve (5), front-wheel speed change control valve (7), shunting valve (8), flow divider (9), left front running motor (10), right front running motor (11), traveling pump (12) and slippage pump (13);
The A mouth of described traveling pump (12) is connected with the P mouth of flow divider (9), and A, the B of flow divider (9), C, D mouth access respectively the B mouth of the A mouth of right front running motor (11), the B mouth of left front running motor (10), the A mouth of left back running motor (4), right back running motor (3); Shunting valve (8) is connected in flow divider (9);
The B mouth of access traveling pump (12) after the A mouth of the B mouth of the A mouth of the B mouth of right front running motor (11), left front running motor (10), left back running motor (4), right back running motor (3) connects;
The A2 mouth of brake control valve (6) is connected with the K mouth of left front running motor (10), right front running motor (11) respectively;
Characterized by further comprising rear change control valve (5) and front-wheel speed change control valve (7);
The A1 mouth of rear change control valve (5) is connected with the X mouth of left back running motor (4), right back running motor (3) respectively;
The A3 mouth of front-wheel speed change control valve (7) is connected with the X mouth of left front running motor (10), right front running motor (11) respectively;
The S mouth of slippage pump (13) is through sucking back oil strainer (2) access fuel tank (1), and the M3 mouth of slippage pump (13) is connected with the P mouth of X, S mouth and the front-wheel speed change control valve (7) of flow divider (9) respectively.
2. a kind of milling machine driving hydraulic-driven speed control system according to claim 1, it is characterized in that, also comprise back work system (14), radiator (15), oil return piece (16) and one way valve (17), 3. the mouth of access oil return piece (16) after the T mouth of front-wheel speed change control valve (7) is connected with the T mouth of flow divider (9), 1. the mouth of back work system (14) access oil return piece (16), left front running motor (10), right front running motor (11), left back running motor (4), 2. the mouth of access oil return piece (16) after the L mouth of right back running motor (3) is connected with the L mouth of traveling pump (12), 4. the mouth of oil return piece (16) takes back through radiator (15) and one way valve (17) the A mouth that sucks back oil strainer (2).
3. a kind of milling machine driving hydraulic-driven speed control system according to claim 1, is characterized in that, described shunting valve (8) and flow divider (9) are integrated valve block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320536408.1U CN203583336U (en) | 2013-08-30 | 2013-08-30 | Running hydraulic driving speed control system of milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320536408.1U CN203583336U (en) | 2013-08-30 | 2013-08-30 | Running hydraulic driving speed control system of milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203583336U true CN203583336U (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320536408.1U Expired - Lifetime CN203583336U (en) | 2013-08-30 | 2013-08-30 | Running hydraulic driving speed control system of milling machine |
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| Country | Link |
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| CN (1) | CN203583336U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110410A (en) * | 2014-07-07 | 2014-10-22 | 中联重科股份有限公司 | Hydraulic system of vehicle-mounted aerial work platform and vehicle-mounted aerial work platform |
| CN104846729A (en) * | 2014-12-03 | 2015-08-19 | 柳工无锡路面机械有限公司 | Milling-wheel driving system for cold milling machine of road surfaces |
| CN106149537A (en) * | 2016-08-22 | 2016-11-23 | 徐州徐工筑路机械有限公司 | A kind of milling mechanism hydraulic traveling system antiskid system |
| CN107795533A (en) * | 2017-10-26 | 2018-03-13 | 湖北三江航天万山特种车辆有限公司 | A kind of more gear drive hydraulic system principles of heavy flat transport vehicle |
-
2013
- 2013-08-30 CN CN201320536408.1U patent/CN203583336U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110410A (en) * | 2014-07-07 | 2014-10-22 | 中联重科股份有限公司 | Hydraulic system of vehicle-mounted aerial work platform and vehicle-mounted aerial work platform |
| CN104846729A (en) * | 2014-12-03 | 2015-08-19 | 柳工无锡路面机械有限公司 | Milling-wheel driving system for cold milling machine of road surfaces |
| CN106149537A (en) * | 2016-08-22 | 2016-11-23 | 徐州徐工筑路机械有限公司 | A kind of milling mechanism hydraulic traveling system antiskid system |
| CN107795533A (en) * | 2017-10-26 | 2018-03-13 | 湖北三江航天万山特种车辆有限公司 | A kind of more gear drive hydraulic system principles of heavy flat transport vehicle |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |