CN2176562Y - speed control device - Google Patents
speed control device Download PDFInfo
- Publication number
- CN2176562Y CN2176562Y CN 93233385 CN93233385U CN2176562Y CN 2176562 Y CN2176562 Y CN 2176562Y CN 93233385 CN93233385 CN 93233385 CN 93233385 U CN93233385 U CN 93233385U CN 2176562 Y CN2176562 Y CN 2176562Y
- Authority
- CN
- China
- Prior art keywords
- pipeline
- valve
- speed control
- pressure
- retaining
- 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 - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 8
- 239000002828 fuel tank Substances 0.000 description 5
- 238000012856 packing Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a hydraulic drive among the speed control device is applied to all kinds of machinery that have hydraulic drive. The hydraulic transmission system of the existing speed control device is improved, a speed control valve [7], a return valve [11], three one-way valves [6], [8] and [9] are connected through pipelines, and the speed of forward and reverse movement of a load is controlled by adjusting the oil quantity of the speed control valve [7 ]. The utility model has the advantages of simple structure, good energy-saving effect, low cost and the like.
Description
The utility model relates to the hydrostatic transmission of speed control unit, when being applied in load variations, carries out hydraulic elevator and other machinery by the recoverable work of deadweight of speed governing.
Hydraulic Power Transmission System in the existing speed control unit can not be simultaneously to positive and negative both direction motion carrying out speed governing.
The purpose of this utility model is that the Hydraulic Power Transmission System in the existing speed control unit is improved, and makes the speed of the positive and negative both direction motion of its energy control load.
The utility model is achieved in that
1. has a Hydraulic Power Transmission System, this Hydraulic Power Transmission System is connected with a speed control valve (7), a rebound valve (11), three retaining valves (6), (8) (9) by pipeline, a pressure-compensated valve (5), thus make its can control load the speed of positive and negative two direction of motion;
2. speed control valve (7) is connected with retaining valve (6), (8), rebound valve (11) respectively by pipeline e, f, h; Be connected with retaining valve (9) by e, g;
3. speed control valve (7) is connected with pressure-compensated valve (5) by pipeline f, h, l;
4. pipeline d is connected with rebound valve (11) by pipeline q;
5. pipeline r is connected with pressure-compensated valve (5), and pressure-compensated valve (5) is connected with pipeline t by pipeline s;
6. pipeline h, t, t ', t ", q respectively with pipeline h ', t ', t ", t ' ", q ' is connected.
Accompanying drawing 1 is a hydraulic scheme of the present utility model.
Accompanying drawing 2 is structural drawing of rebound valve (11).
Existing accompanying drawings is as follows:
The fuel tank (11) of fluid is housed, pipeline a is connected with oil filter (2), oil filter (2) is connected with pipeline b, pipeline b is connected with oil pump (3), oil pump (3) is connected with pipeline c, pipeline c is connected with high-pressure filter (4), high-pressure filter (4) is connected with pipeline d, pipeline d is connected with retaining valve (6), retaining valve (6) is connected with pipeline e, pipeline e is connected with speed control valve (7), speed control valve (7) is connected with pipeline f, and pipeline f is connected with retaining valve (8), and retaining valve (8) is connected with pipeline i, pipeline i is connected with governor valve (12), governor valve (12) is connected with pipeline k, and pipeline k is connected with executive component (13), and executive component (13) is connected with load (14).Pipeline d is connected with pipeline q, r again simultaneously, pipeline r is connected with pressure compensator (5), pressure-compensated valve (5) is connected with pipeline l, s simultaneously, pipeline e is connected with pipeline h, m, and pipeline m is connected with solenoid valve (10), and solenoid valve (10) is connected with pipeline n, pipeline n is connected with pipeline t, pressure-compensated valve (5) is connected with pipeline s, and pipeline s is connected with pipeline t, and pipeline q is connected with rebound valve (11).Pipeline e is connected with pipeline g again simultaneously, and pipeline g is connected with retaining valve (9), and retaining valve (9) is connected with pipeline j, and pipeline j is connected with pipeline i.Pipeline f is connected with pipeline h again simultaneously, and pipeline h is connected with rebound valve (11), and rebound valve (11) is connected with pipeline t, and pipeline t takes back fuel tank (1).
When engine (22) prestart, each valve present position as shown in Figure 1, speed control valve (7) cuts out.After engine (22) starting, during solenoid valve (10) outage, the fluid of hydraulic pump (3) output is successively by pipeline c, d, r, and pressure-compensated valve (5), pipeline s, t flow back to fuel tank (1), realize starting under no load.When solenoid valve (10) energising, and make speed control valve (7) open simultaneously, the pressure of pipeline d passes to rebound valve (11) by pipeline q, rebound valve (11) is closed, the fluid of hydraulic pump (3) output c, high-pressure filter (4), pipeline d, retaining valve (6), pipeline e, speed control valve (7), pipeline f, retaining valve (8), pipeline i, governor valve (12), pipeline k by the road enters executive component (13), drives load (14) by executive component (13) again.The travelling speed of load (14) is controlled by the oil mass of admission velocity operation valve (7).Unnecessary fluid flows back to fuel tank (1) by pipeline r, pressure-compensated valve (5), pipeline s, t.
When engine (22) shuts down, speed control valve (7) is opened, then executive component (13) is under the deadweight effect of load (14), and fluid k, i, j, g, e, f, h, t, governor valve (12), retaining valve (9), speed control valve (7), rebound valve (11) by the road flows back to fuel tank (1).Retaining valve (6), (8) are in closed condition at this moment.So inverted speed is also controlled by speed control valve (7).
Now 2 courses of work with rebound valve (11) are described as follows in conjunction with the accompanying drawings:
Rebound valve (11) is interconnected and is formed by valve body (15), spool (16), spring (17), valve gap (18), spool (19), spring (20), valve seat (21).Valve body has pipeline h ', t ', t on (15) " reaches the B chamber.Have pipeline q ', h ", t ' " and C chamber on the valve gap (18).Valve seat has pipeline u on (21), pipeline u and pipeline t ', and " be communicated with, pipeline h ', t ', q ' difference are communicated with pipeline h, t, q simultaneously.Spool (16) is packed into from the direction of valve gap (18) the valve body (15), again spring (17) is packed in the spool (16), with screw the same valve body of valve gap (18) (15) is connected then, with spool (19) from valve seat (21) valve gap (18) of packing into, reinstall spring (20), the valve seat (21) of packing into then.
When hydraulic pump (3) is started working, then fluid is by pipeline c, d, r, q, pipeline q ' pushes spool (19) to valve seat (21), cut off the connection of C chamber and pipeline u, " flow into spring cavity B; spool (16) is pressed to pipeline h, thereby cut off the connection of pipeline h ' and pipeline t ' and by pipeline h.When hydraulic pump (3) in case quit work, then the pressure of oil circuit q ' reduces rapidly, spool (19) cuts off pipeline q ' and pipeline h under the effect of spring (20) " connection, link up pipeline h ", u.When pipeline h ' located thrust that fluid produces greater than the elastic force of spring (1), then spool (16) was open, and pipeline h ' is with pipeline t ' communication, and fluid flows to pipeline t from pipeline h ' ".
The utility model has the advantages that the speed of the positive and negative both direction motion of energy control load, and simple in structure, good energy-conserving effect, cost is low.
Claims (4)
1, speed control unit comprises speed control valve [7], it is characterized in that:
A) has a Hydraulic Power Transmission System, this Hydraulic Power Transmission System is connected with a speed control valve [7], a rebound valve [11], three retaining valves [6] [8], [9], a pressure-compensated valve [5] by pipeline, thereby makes the speed of positive and negative two direction of motion of its energy control load;
B) speed control valve [7] is connected with retaining valve [6], [8], rebound valve [11] respectively by pipeline e, f, h, is connected with retaining valve [9] by e, g;
C) speed control valve [7] is connected with pressure-compensated valve [5] by pipeline f, h, l;
D) pipeline d is connected with retaining valve [6], pipeline r;
E) pipeline r is connected with pressure-compensated valve [5], and pressure-compensated valve [5] is connected with pipeline t by pipeline s.
2, speed control unit according to claim 1 is characterized in that pipeline d is connected with rebound valve (11) by pipeline q.
3, speed control unit according to claim 2 is characterized in that spring cavity B is by pipeline h and " communicates with the C chamber of valve gap (18).
4, speed control unit according to claim 3 is characterized in that pipeline ht, t ', t ", q respectively with pipeline h ', t ', t ", t ' ", q ' connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93233385 CN2176562Y (en) | 1993-03-05 | 1993-03-05 | speed control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93233385 CN2176562Y (en) | 1993-03-05 | 1993-03-05 | speed control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2176562Y true CN2176562Y (en) | 1994-09-07 |
Family
ID=33809330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93233385 Expired - Fee Related CN2176562Y (en) | 1993-03-05 | 1993-03-05 | speed control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2176562Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745561A (en) * | 2011-04-20 | 2012-10-24 | 苏州福沃斯电梯有限公司 | Hydraulic lift/hydraulic hoister valve and power pump station adopting same |
| CN101657646B (en) * | 2007-04-18 | 2012-11-14 | 萱场工业株式会社 | Speed controller of hydraulic actuator |
-
1993
- 1993-03-05 CN CN 93233385 patent/CN2176562Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101657646B (en) * | 2007-04-18 | 2012-11-14 | 萱场工业株式会社 | Speed controller of hydraulic actuator |
| CN102745561A (en) * | 2011-04-20 | 2012-10-24 | 苏州福沃斯电梯有限公司 | Hydraulic lift/hydraulic hoister valve and power pump station adopting same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |