CN2427556Y - Steering, hydraulic braking operation device for bulldozer - Google Patents
Steering, hydraulic braking operation device for bulldozer Download PDFInfo
- Publication number
- CN2427556Y CN2427556Y CN 00225034 CN00225034U CN2427556Y CN 2427556 Y CN2427556 Y CN 2427556Y CN 00225034 CN00225034 CN 00225034 CN 00225034 U CN00225034 U CN 00225034U CN 2427556 Y CN2427556 Y CN 2427556Y
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- China
- Prior art keywords
- oil
- valve
- pipe
- control valve
- braking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a steering braking hydraulic operation device for a bulldozer. An oil return pipe of an operation control valve and an oil inlet pipe 11 connected with a pilot control oil pump 13 are connected with an oil tank 1. Four oil outlets of the operation control valve are connected with four oil inlet pipes of a steering brake pilot valve 8, and four oil outlet pipes are connected with four oil inlets of a steering brake control valve 3. An oil return pipe 39 of the steering brake control valve and an oil inlet pipe 38 connected with a steering brake oil pump 12 are connected with an oil tank 2. The utility model replaces the mechanical connecting rod control way with hydraulic control, replaces a plurality of handles with a handle, enables an operator to operate simply and comfortably and lightens the labor strength.
Description
The utility model relates to a kind of bulldozer operating means, belongs to a kind of bulldozer steering hydraulic brake operating device.
The braking in a turn of bulldozer adopts the mechanical linkage control mode more, needs a plurality of handles to go to control various operation sequences, makes operating personnel feel loaded down with trivial details, and labour intensity is big, and is tired easily.
The purpose of this utility model is that a kind of mode with the hydraulic pressure Long-distance Control will be provided, only with a lever operated bulldozer steering hydraulic brake operating device.
Introduce structure of the present utility model and operation below in conjunction with drawings and Examples.
Fig. 1 is the utility model hydraulic system principle figure;
Fig. 2 is operation control valve handle position figure.
With reference to accompanying drawing, the oil return pipe 10 of operation control valve 9 and be connected with the oil inlet pipe 11 that the guide controls oil pump 13, connected tank 1.4 oil-outs of operation control valve 9 switch through 4 oil inlet pipes 30,31,32,33 to braking pilot valve 8, and 4 flowlines 34,35,36,37 of braking in a turn pilot valve 8 switch through 4 oil-ins to brake control valve 3.The oil return pipe 39 of braking in a turn control valve 3 and be connected with oil inlet pipe 38 connected tanks 2 of braking in a turn oil pump 12.
4 pilot operated directional control valves 14,15,16,17 are arranged in the braking in a turn control valve 3, its oil-in taps into oil pipe 38, its oil return opening takes back oil pipe 39, its oil-out connects left brake 7, right brake 6, left clutch 5, right clutch 4 respectively, is connected with overflow valve 21 by pipeline between oil inlet pipe 38 and the oil return pipe 39.Braking in a turn pilot valve 8 has two priority valves 28,29, its oil return opening takes back oil pipe 10, its oil-in taps into oil pipe 30,31 respectively, its control port connects the selection hydraulic fluid port of shuttle valve 27,26 respectively, another of two shuttle valves selects hydraulic fluid port to tap into oil pipe 32, and the oil-out of shuttle valve 27,26 connects pilot operated directional control valve 14,15 respectively.The selection hydraulic fluid port of shuttle valve 24,25, an end tap into oil pipe 30,31 respectively, and the other end taps into oil pipe 33, and its oil-out connects pilot operated directional control valve 16,17 by one-way throttle valve 23,22 respectively.Be connected to shuttle valve 19 between the flowline 34,35, be connected to shuttle valve 18 between the flowline 36,37, be connected to shuttle valve 20 between the flowline of shuttle valve 18,19, the flowline of shuttle valve 20 connects overflow valve 21.
Handle position and effect during operation:
Handle puts 0
Control oil is through fuel tank 1, oil pump 13, operation control valve 9, oil sump tank 1.Valve 14,15,16,17 is failure to actuate, and left and right sides brake, left and right sides clutch are in the home position.
Handle is put E
Control oil divides two-way behind fuel tank 1, oil pump 13, operation control valve 9: the one tunnel through shuttle valve 24, one-way throttle valve 23, and 16 actions of control pilot operated directional control valve simultaneously through shuttle valve 18,20, boost working connection overflow valve 21; Another road is through shuttle valve 25, one-way throttle valve 22, and control pilot operated directional control valve 17 moves.Main control oil unclamps left and right sides clutch through fuel tank 2, oil pump 12, pilot operated directional control valve 16,17.
Handle is put B
The guide controls oil and divide two-way behind fuel tank 1, oil pump 13, operation control valve 9, shuttle valve 24, one-way throttle valve 23: the one tunnel makes valve 16 actions; Another road boosts overflow valve 21 through shuttle valve 18,20.Main control oil unclamps left clutch through fuel tank 2, oil pump 12, valve 16, cuts off the right power, and bulldozer turns left.
Handle is put A
The guide controls oil and divide two-way behind fuel tank 1, oil pump 13, operation control valve 9: the first via is divided two-way again behind shuttle valve 24, and one the tunnel makes valve 16 actions, and another road boosts overflow valve 21 through shuttle valve 18,20.The second the tunnel opens priority valve 28, through shuttle valve 27, makes valve 14 actions.Main control oil on the one hand through valve 16, unclamps left clutch through fuel tank 2, oil pump 12, on the other hand through valve 14, makes left brake action, realizes left pivot turn.
Handle is put C
The guide controls oil and divide two-way behind fuel tank 1, oil pump 13, operation control valve 9, shuttle valve 25, one-way throttle valve 22: the one tunnel makes valve 17 actions; Another road boosts overflow valve 21 through shuttle valve 18,20.Main control oil unclamps right clutch through fuel tank 2, oil pump 12, valve 17, cuts off the right power, and bulldozer is turned right.
Handle is put D
The guide controls oil and divide two-way behind fuel tank 1, oil pump 13, operation control valve 9: the first via is divided two-way again behind shuttle valve 25, and one the tunnel makes valve 17 actions, and another road boosts overflow valve 21 through shuttle valve 18,20.The second the tunnel opens priority valve 29, through shuttle valve 26, makes valve 15 actions.Main control oil on the one hand through valve 17, unclamps right clutch through fuel tank 2, oil pump 12, on the other hand through valve 15, makes left brake action, realizes left pivot turn.
Handle is put F
The guide controls oil and divide two-way behind fuel tank 1, oil pump 13, operation control valve 9: the one tunnel through shuttle valve 26, makes valve 15 actions, simultaneously through shuttle valve 19,20, overflow valve 21 is boosted; Another road makes valve 14 actions through shuttle valve 27.Main control oil moves left and right brake through fuel tank 2, oil pump 12, valve 14,15 simultaneously, realizes the bulldozer braking.
The utility model replaces the mechanical linkage control mode with hydraulic control, and it is several lever operated to replace the past with a handle, makes driver's operation easy to be comfortable, has alleviated labour intensity.
Claims (2)
1, a kind of bulldozer steering hydraulic brake operating device is characterized in that: the oil return pipe (10) of operation control valve (9) and be connected with the oil inlet pipe (11) that the guide controls oil pump (13), connected tank (1); 4 oil-outs of operation control valve (9) switch through 4 oil inlet pipes (30), (31), (32), (33) to braking pilot valve (8), 4 oil-ins to brake control valve (3) are switched through in 4 flowlines (34) of braking in a turn pilot valve (8), (35), (36), (37); The oil return pipe (39) of braking in a turn control valve (3) and be connected with oil inlet pipe (38) connected tank (2) of braking in a turn oil pump (12).
2, by the described bulldozer steering hydraulic of claim 1 brake operating device, it is characterized in that: 4 pilot operated directional control valves (14), (15), (16), (17) are arranged in the braking in a turn control valve (3), its oil-in taps into oil pipe (38), its oil return opening takes back oil pipe (39), its oil-out connects left brake (7), right brake (6), left clutch (5), right clutch (4) respectively, is connected with overflow valve (21) by pipeline between oil inlet pipe (38) and the oil return pipe (39); Braking in a turn pilot valve (8) has two priority valves (28), (29), its oil return opening takes back oil pipe (10), its oil-in taps into oil pipe (30) respectively, (31), its control port connects shuttle valve (27) respectively, (26) selection hydraulic fluid port, another of two shuttle valves selects hydraulic fluid port to tap into oil pipe (32), shuttle valve (27), (26) oil-out connects pilot operated directional control valve (14) respectively, (15), shuttle valve (24), (25) selection hydraulic fluid port, one end taps into oil pipe (30) respectively, (31), the other end taps into oil pipe (33), its oil-out is respectively by one-way throttle valve (23), (22) connect pilot operated directional control valve (16), (17), flowline (34), (35) be connected to shuttle valve (19) between, flowline (36), (37) be connected to shuttle valve (18) between, shuttle valve (18), (19) be connected to shuttle valve (20) between the flowline, the flowline of shuttle valve (20) connects overflow valve (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00225034 CN2427556Y (en) | 2000-06-21 | 2000-06-21 | Steering, hydraulic braking operation device for bulldozer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00225034 CN2427556Y (en) | 2000-06-21 | 2000-06-21 | Steering, hydraulic braking operation device for bulldozer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2427556Y true CN2427556Y (en) | 2001-04-25 |
Family
ID=33589234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00225034 Expired - Lifetime CN2427556Y (en) | 2000-06-21 | 2000-06-21 | Steering, hydraulic braking operation device for bulldozer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2427556Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614270B (en) * | 2009-07-23 | 2011-06-22 | 大连兴龙液压有限公司 | Hydraulic torque converter valve for soil shifter |
| CN102359133A (en) * | 2011-09-27 | 2012-02-22 | 山推工程机械股份有限公司 | Hydraulic system of bulldozer |
| CN102826111A (en) * | 2012-09-17 | 2012-12-19 | 三一重通机械有限公司 | Bulldozer steering device and bulldozer |
| CN104149849A (en) * | 2014-09-01 | 2014-11-19 | 山推工程机械股份有限公司 | Hydraulic steering brake system and hydraulic control steering brake valve |
| CN104648471A (en) * | 2013-11-20 | 2015-05-27 | 山推工程机械股份有限公司 | Steering and braking system and bulldozer |
-
2000
- 2000-06-21 CN CN 00225034 patent/CN2427556Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614270B (en) * | 2009-07-23 | 2011-06-22 | 大连兴龙液压有限公司 | Hydraulic torque converter valve for soil shifter |
| CN102359133A (en) * | 2011-09-27 | 2012-02-22 | 山推工程机械股份有限公司 | Hydraulic system of bulldozer |
| CN102826111A (en) * | 2012-09-17 | 2012-12-19 | 三一重通机械有限公司 | Bulldozer steering device and bulldozer |
| CN104648471A (en) * | 2013-11-20 | 2015-05-27 | 山推工程机械股份有限公司 | Steering and braking system and bulldozer |
| CN104149849A (en) * | 2014-09-01 | 2014-11-19 | 山推工程机械股份有限公司 | Hydraulic steering brake system and hydraulic control steering brake valve |
| CN104149849B (en) * | 2014-09-01 | 2017-02-15 | 山推工程机械股份有限公司 | Hydraulic steering brake system and hydraulic control steering brake valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: NO.31 HEAVY DUTY INDUSTRY GROUP CO., LTD. TO: SANY HEAVY INDUSTRY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Sanyi Heavy Industry Co., Ltd. Patentee before: No.31 Heavy Duty Industry Group Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010425 |