CN203667949U - Traveling and braking control system of scissor type overhead working truck - Google Patents
Traveling and braking control system of scissor type overhead working truck Download PDFInfo
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- CN203667949U CN203667949U CN201420050625.4U CN201420050625U CN203667949U CN 203667949 U CN203667949 U CN 203667949U CN 201420050625 U CN201420050625 U CN 201420050625U CN 203667949 U CN203667949 U CN 203667949U
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Abstract
The utility model discloses a traveling and braking control system of a scissor type overhead working truck. The traveling and braking control system comprises a compensation valve (1), a three-position four-way electromagnetic valve (2) and a braking system (6), a first oil inlet pipeline (3) is connected with each of oil inlets of the braking system (6) and the compensation valve (1), the oil outlet of the compensation valve (1) is connected with the oil inlet of the three-position four-way electromagnetic valve (2) through a second oil inlet pipeline (7), one oil outlet of the three-position four-way electromagnetic valve (2) is connected with a first travel motor (5) through a first oil outlet pipeline (8), and the other oil outlet is connected with a second travel motor (10) through a second oil outlet pipeline (9); one end of a fifth oil inlet pipeline (12) is connected with the first oil inlet pipeline (3) while the other end is connected with the oil inlet of the three-position four-way electromagnetic valve (2), and the fifth oil inlet pipeline (12) is provided with a fixed damper (11); the control hole of the compensation valve (1) and the oil outlets of the three-position four-way electromagnetic valve (2) are connected with an oil return pipeline (4). The traveling and braking control system of the scissor type overhead working truck has advantages of simple structure, low manufacturing cost and energy conservation.
Description
Technical field
The utility model relates to a kind of scissor-type aerial platform walking braking control system, belongs to fluid control field.
Background technology
Scissor-type aerial platform adopts power unit as oil sources conventionally, and needing the action of controlling is that lifting platform, walking turn to, four actions are opened in walking, drg.
At present domestic scheme of cutting fork principle and mostly adopt Ji Ni company of the U.S., its not foot point be:
One, go the flow of walking to need all the time the by pass valve (being 14 in Fig. 2) through a 9bar, the effect of this by pass valve is to provide back pressure, in order to open drg.But can produce when walking the degradation of energy of 9bar, add the crushing of the flow characteristic product of overflow valve, this degradation of energy at least exceedes 11bar.
Two, drg release control, discharges by a damping when drg of scissor-type aerial platform discharges, the buffering effect when size of damping determines the parking of scissor-type aerial platform.Domestic independent electromagnetic valve of scissor-type high-altitude operation (being 13 in Fig. 2) is controlled.Increase like this cost of valve piece.
Utility model content
The purpose of this utility model is, a kind of scissor-type aerial platform walking braking control system is provided, and it has advantages of simple in structure, low cost of manufacture and energy-conservation.
The technical solution of the utility model: a kind of scissor-type aerial platform walking braking control system, comprise throttle compensating valve, three position four-way electromagnetic valve, the first running motor and brake system, the first feed line is connected with the oil inlet of brake system and throttle compensating valve respectively, the oil outlet of throttle compensating valve is connected with the oil inlet of three position four-way electromagnetic valve by the second feed line, and 2 oil outlets of three position four-way electromagnetic valve are connected with the first running motor and the second running motor with the second flow line by the first flow line respectively; One end of the 5th feed line is connected with the first feed line, and the other end is connected with the oil inlet of three position four-way electromagnetic valve, and the 5th feed line is provided with fixing damper; The control mouth of throttle compensating valve and the oil outlet of three position four-way electromagnetic valve are all connected with oil return pipeline.Described brake system is routine techniques.
In aforesaid scissor-type aerial platform walking braking control system, the diameter of described fixing damper is 0.4mm.
In aforesaid scissor-type aerial platform walking braking control system, the model of described three position four-way electromagnetic valve is: SV10-47B-0-N-0.
In aforesaid scissor-type aerial platform walking braking control system, the model of described throttle compensating valve is: EP08-35-0-N-150.
Compared with prior art, the utility model has adopted throttle compensating valve, the response pressure of throttle compensating valve is 10bar, like this, as long as the pressure oil of walking produces this throttle compensating valve of pressure of 10bar and just opens completely, and the pressure drop that throttle compensating valve produces can not exceed 1bar, substantially can ignore, therefore can produce power loss.By actual measurement, take 12M high cut fork valve piece as example, when normal unloaded walking, the system pressure of domestic other scheme needs 100bar, is 90bar and adopt system pressure of the present utility model, therefore, when walking, the utility model can energy-conservation 10%.
The utility model is without electromagnetic valve is set: the oil inlet of the three position four-way electromagnetic valve that walking controls has directly been linked in the outlet (i.e. the 5th feed line) that drg is discharged to damping, when walking is stopped, the meta of three position four-way electromagnetic valve is H function, the at this time logical T of P, therefore,, although the utility model does not arrange electromagnetic valve, guaranteed the normal operation of system, thereby simplify system, reduced device fabrication cost.
Accompanying drawing explanation
Fig. 1 is walking braking control system schematic diagram of the present utility model;
Fig. 2 is the walking braking control system schematic diagram of traditional scissor-type aerial platform.
Being labeled as in accompanying drawing: 1-throttle compensating valve, 2-three position four-way electromagnetic valve, 3-the first feed line, 4-oil return pipeline, 5-the first running motor, 6-brake system, 7-the second feed line, 8-the first flow line, 9-the second flow line, 10-the second running motor, 11-fixes damper, 12-the 5th feed line, 13-electromagnetic valve, 14-by pass valve.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, but not as the foundation of the utility model being done to any restriction.
The diameter of described fixing damper 11 is 0.4mm; The model of three position four-way electromagnetic valve 2 is: SV10-47B-0-N-0; The model of throttle compensating valve 1 is: EP08-35-0-N-150.
Principle of work of the present utility model: as shown in Figure 1, the pressure oil of coming from system enters respectively throttle compensating valve 1 and running motor drg control BR mouth and fixing damper 11 by the first feed line 3, in the time that the pressure of system exceedes the pressure 10.3bar of design of throttle compensating valve 1, throttle compensating valve 1 standard-sized sheet, system pressure oil is by three logical four way solenoid valve 2 off-loads.In the time that needs are walked, three position four-way electromagnetic valve 2 is given after electricity, spool switches, pressure oil provides pressure oil to the first running motor 5 or the second running motor 10 by the first flow line 8 or the second flow line 9, and in the time that pressure rises to the response pressure of drg, motor brake is opened, motor starts to rotate, be that walking function is realized, the second flow line 9 or the first flow line 8 are passed through respectively in the oil return of motor, then arrive fuel tank by three position four-way electromagnetic valve 2 and 4 oil returns of oil return pipeline.In the time that needs stop, after motor and three position four-way electromagnetic valve 2 dead electricity, oil pump stop control lever, valve core reset, motor rotates by the H type meta inertia of three position four-way electromagnetic valve, and the pressure oil of drg brake cylinder is fixed damper 11 off-loads by drg.Because the existence of fixing damper 11, the shut of drg can slightly postpone, to reach the buffering effect while stopping.
Claims (4)
1. a scissor-type aerial platform walking braking control system, it is characterized in that: comprise throttle compensating valve (1), three position four-way electromagnetic valve (2), the first running motor (5) and brake system (6), the first feed line (3) is connected with the oil inlet of brake system (6) and throttle compensating valve (1) respectively, the oil outlet of throttle compensating valve (1) is connected with the oil inlet of three position four-way electromagnetic valve (2) by the second feed line (7), 2 oil outlets of three position four-way electromagnetic valve (2) are connected with the first running motor (5) and the second running motor (10) with the second flow line (9) by the first flow line (8) respectively, one end of the 5th feed line (12) is connected with the first feed line (3), and the other end is connected with the oil inlet of three position four-way electromagnetic valve (2), and the 5th feed line (12) is provided with fixing damper (11), the oil outlet of the control mouth of throttle compensating valve (1) and three position four-way electromagnetic valve (2) is all connected with oil return pipeline (4).
2. scissor-type aerial platform walking braking control system according to claim 1, is characterized in that: the diameter of described fixing damper (11) is 0.4mm.
3. scissor-type aerial platform walking braking control system according to claim 1 and 2, is characterized in that: the model of described three position four-way electromagnetic valve (2) is: SV10-47B-0-N-0.
4. scissor-type aerial platform walking braking control system according to claim 3, is characterized in that: the model of described throttle compensating valve (1) is: EP08-35-0-N-150.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420050625.4U CN203667949U (en) | 2014-01-26 | 2014-01-26 | Traveling and braking control system of scissor type overhead working truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420050625.4U CN203667949U (en) | 2014-01-26 | 2014-01-26 | Traveling and braking control system of scissor type overhead working truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203667949U true CN203667949U (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420050625.4U Expired - Fee Related CN203667949U (en) | 2014-01-26 | 2014-01-26 | Traveling and braking control system of scissor type overhead working truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203667949U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314137A (en) * | 2015-06-16 | 2017-01-11 | 徐工集团工程机械股份有限公司 | Walking brake control hydraulic system and shear-fork aerial work platform |
| CN106976825A (en) * | 2017-04-01 | 2017-07-25 | 浙江高宇液压机电有限公司 | Bypass the scissor aerial work platform hydraulic control system of off-load electromagnetic direct-drive |
-
2014
- 2014-01-26 CN CN201420050625.4U patent/CN203667949U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314137A (en) * | 2015-06-16 | 2017-01-11 | 徐工集团工程机械股份有限公司 | Walking brake control hydraulic system and shear-fork aerial work platform |
| CN106314137B (en) * | 2015-06-16 | 2019-07-23 | 徐工集团工程机械股份有限公司 | A kind of walking control for brake hydraulic system and scissor aerial work platform |
| CN106976825A (en) * | 2017-04-01 | 2017-07-25 | 浙江高宇液压机电有限公司 | Bypass the scissor aerial work platform hydraulic control system of off-load electromagnetic direct-drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20210126 |