CN217435698U - Wet-type braking liquid filling control system and liquid filling valve - Google Patents
Wet-type braking liquid filling control system and liquid filling valve Download PDFInfo
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- CN217435698U CN217435698U CN202220854158.5U CN202220854158U CN217435698U CN 217435698 U CN217435698 U CN 217435698U CN 202220854158 U CN202220854158 U CN 202220854158U CN 217435698 U CN217435698 U CN 217435698U
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Abstract
The utility model relates to a wet braking system technical field, concretely relates to wet braking filling control system, including oil tank, working pump, prefill valve and arresting gear, hydraulic oil gets into arresting gear through the prefill valve, still includes the prefill priority valve, and hydraulic oil provides power by the working pump, through the preferred direct prefill valve that gets into of prefill priority valve, the prefill valve is provided with the Ls mouth, and Ls mouth and prefill priority valve intercommunication transmit pressure feedback signal for the prefill priority valve through the Ls mouth to realize the prefill priority valve and the prefill valve joint control and give arresting gear fuel feeding. The utility model cancels the pilot pump, controls the liquid filling priority valve through the liquid filling valve, thereby supplying oil to the brake device, and simultaneously coordinates the oil supply of the hydraulic system of the working device, thus solving the problem of high failure rate of the pilot pump; the liquid filling fault caused by the failure of the pilot pump is obviously reduced, the cost and the maintenance cost of the whole machine are reduced, and the driving safety is improved.
Description
Technical Field
The utility model relates to a wet braking system technical field, concretely relates to wet braking liquid filling control system and prefill valve.
Background
In a conventional loader liquid filling brake system, a pilot pump absorbs oil from an oil tank, outlet pressure oil directly enters a liquid filling valve for filling, redundant oil of the pilot pump is shunted back to the oil tank from an O port of the liquid filling valve when the liquid filling valve fills liquid, and all the oil of the pilot pump returns to the oil tank from the O port of the liquid filling valve when the pressure of the liquid filling valve reaches a set pressure.
However, the displacement of the pilot pump is small, and an aluminum body pump is generally adopted, so that the reliability is low, the failure rate is high, the working efficiency is influenced, the pilot pump and the working pump (or the steering pump) are in a serial pump structure, the price is high, the damaged pilot pump and the intact working pump connected with the pilot pump are replaced together, and the maintenance and service cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough and defect of prior art, provide a wet braking fluid charging control system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a wet-type brake liquid filling control system comprises an oil tank, a working pump, a liquid filling valve and a brake device, wherein hydraulic oil enters the brake device through the liquid filling valve, the wet-type brake liquid filling control system further comprises a liquid filling priority valve, the hydraulic oil is powered only by the working pump, the liquid filling priority valve is directly communicated with the liquid filling valve, so that the hydraulic oil preferentially enters the liquid filling valve, the liquid filling valve is provided with an Ls port, the Ls port is communicated with the liquid filling priority valve, and a pressure feedback signal is transmitted to the liquid filling priority valve through the Ls port, so that the liquid filling priority valve and the liquid filling valve jointly control oil supply to the brake device.
Further, the charge priority valve is also communicated with a working device hydraulic system to supply oil to the working device hydraulic system.
Has the advantages that: the utility model cancels the pilot pump, controls the liquid filling priority valve through the liquid filling valve, thereby supplying oil to the brake device, and simultaneously coordinates the oil supply of the hydraulic system of the working device, thus solving the problem of high failure rate of the pilot pump; the liquid filling fault caused by the failure of the pilot pump is obviously reduced, the cost and the maintenance cost of the whole machine are reduced, and the driving safety is improved.
The utility model also provides a wet braking prefill valve takes following technical scheme:
a liquid filling valve of the wet braking liquid filling control system comprises a valve body, wherein the valve body is provided with a P port, a T port and an output port, a filter screen, a throttle valve, a one-way valve, a liquid filling reversing valve group and a liquid filling control valve group are arranged in the valve body, the valve body is communicated with a liquid filling priority valve through the P port, is communicated with a braking device through the output port, and is communicated with an oil tank through the T port, the T port is communicated with hydraulic oil below the liquid level, the valve body is further provided with an Ls port, and is communicated with the liquid filling priority valve through the Ls port and transmits a pressure feedback signal to the liquid filling priority valve, so that the hydraulic oil is controlled to enter the liquid filling valve from the liquid filling priority valve through the P port and enter the braking device from the output port.
Furthermore, the valve body is also provided with a low-pressure alarm SW port which is communicated with the pressure detection valve.
Furthermore, on the inner side of the port P, a filter screen, a throttle valve, a one-way valve and a liquid filling control valve group are sequentially communicated, a flow channel between the throttle valve and the one-way valve is communicated with a liquid filling reversing valve group, the liquid filling reversing valve group is respectively communicated with the port Ls and the port T, and the liquid filling reversing valve group is also communicated with the flow channel between the one-way valve and the liquid filling control valve group to acquire a pressure signal.
Has the advantages that: the structure of the liquid filling valve is simplified, so that the liquid filling priority valve can directly supply oil to the braking device, the failure rate is reduced, and the cost of the whole machine and the later maintenance service cost are reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of a prefill valve A-A;
FIG. 2 is a schematic view of the distribution of the internal structure of the prefill valve;
FIG. 3 is a schematic diagram of a wet brake charging control system;
FIG. 4 is a schematic view of a cross-sectional view B-B of the prefill valve;
FIG. 5 is a right side view of the charge valve;
FIG. 6 is a front view of the charge valve;
FIG. 7 is a left side view of the charge valve;
FIG. 8 is a schematic cross-sectional view of a prefill valve C-C;
FIG. 9 is a schematic cross-sectional view of a prefill valve D-D;
FIG. 10 is a schematic structural diagram of an original wet brake charging control system;
FIG. 11 is a schematic view showing the distribution of the internal structure of the original prefill valve;
in the figure, an oil tank 1, a charging valve 2, a charging reversing valve group 21, a charging control valve group 22, a filter screen 23, a throttle valve 24, a one-way valve 25, a brake device 3, a working device hydraulic system 4, a charging priority valve 5 and a working pump 6 are shown.
Detailed Description
The invention will be further described with reference to the following specific embodiments and the accompanying drawings.
Example one
Fig. 3 shows a wet brake charging control system, which includes an oil tank 1, a working pump 6, a charging valve 2, and a brake device 3, wherein hydraulic oil enters the brake device 3 through the charging valve 2, and the wet brake charging control system further includes a charging priority valve 5, the hydraulic oil is powered by the working pump 6 and preferentially and directly enters the charging valve 2 through the charging priority valve 5, the charging valve 2 is provided with an Ls port, the Ls port is communicated with the charging priority valve 5 and provides a pressure feedback signal for the preferential charging valve 5, so that the charging priority valve 5 and the charging valve 2 are jointly controlled to supply oil to the brake device 3.
Hydraulic oil also enters the working device hydraulic system 4 through the charge priority valve 5.
The utility model cancels the pilot pump, controls the liquid charging priority valve 5 through the liquid charging valve 2, thereby supplying oil to the brake device 3 and supplying oil, and simultaneously coordinates the oil supply of the hydraulic system 4 of the working device, thus solving the problem of high failure rate of the pilot pump; the liquid filling fault caused by the failure of the pilot pump is obviously reduced, the cost and the maintenance cost of the whole machine are reduced, and the driving safety is improved.
Example two
The parts not mentioned in this embodiment may be as described in the above embodiments.
Fig. 1 to 9 show a liquid charging valve of a wet braking liquid charging control system, which comprises a valve body, wherein the valve body is provided with a P port, a T port, output ports a1 and a2, a filter screen 23, a throttle valve 24, a one-way valve 25, a liquid charging reversing valve set 21 and a liquid charging control valve set 22 are arranged in the valve body, the valve body is communicated with a liquid charging priority valve 5 through the P port, communicated with a braking device 3 through the output ports a1 and a2 and communicated with an oil tank 1 through the T port, the T port is communicated with hydraulic oil below the liquid level in the oil tank 1, the valve body is further provided with an Ls port, communicated with the liquid charging priority valve 5 through the Ls port and used for transmitting a pressure feedback signal to the liquid charging priority valve 5, so that the hydraulic oil is controlled to enter the liquid charging valve 2 from the liquid charging priority valve 5 through the P port and enter the braking device 3 from the output ports a1 and a 2.
The valve body is also provided with a low-pressure alarm SW port which is communicated with the pressure detection valve.
Inside the port P, a filter screen 23, a throttle valve 24, a check valve 25 and a liquid filling control valve group 22 are sequentially communicated, a flow channel between the throttle valve 24 and the check valve 25 is communicated with a liquid filling reversing valve group 21 to collect pressure signals, the liquid filling reversing valve group 21 is also communicated with the port Ls and the port T respectively, and the liquid filling reversing valve group 21 is also communicated with the flow channel between the check valve 25 and the liquid filling control valve group 22 to collect pressure signals.
During liquid filling, hydraulic oil enters from the port P, passes through the filter screen 23, the throttle valve 24 and the one-way valve 25, enters the liquid filling control valve 22, supplies oil to the braking device 3 through the liquid filling control valve group 22, and the low-pressure alarm SW is communicated with the pressure detection valve; when the charging pressure reaches a set value, the charging reversing valve set 21 is switched and communicated with the T port, the pressure at the Ls port returns to zero, the charging priority valve 5 does not supply oil to the charging valve 2 any more, and the working device hydraulic system 4 can be supplied with oil to complete control.
The utility model discloses simplified 2 structures of prefill valve, control prefill priority valve 5 is preferred gives 3 fuel feeding of arresting gear, has reduced the fault rate to complete machine cost and later stage maintenance service cost have been reduced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (5)
1. A wet-type brake liquid filling control system comprises an oil tank, a working pump, a liquid filling valve and a brake device, wherein hydraulic oil enters the brake device through the liquid filling valve.
2. The wet brake charging control system of claim 1, wherein the charging priority valve is further in communication with a working implement hydraulic system for supplying oil thereto.
3. A liquid charging valve of a wet type brake liquid charging control system according to claim 1, characterized by comprising a valve body, wherein the valve body is provided with a P port, a T port and an output port, a filter screen, a throttle valve, a one-way valve, a liquid charging reversing valve group and a liquid charging control valve group are arranged in the valve body, the valve body is communicated with a liquid charging priority valve through the P port, is communicated with a brake device through the output port and is communicated with an oil tank through the T port, the T port is communicated with hydraulic oil below the liquid level, the valve body is further provided with an Ls port, and is communicated with the liquid charging priority valve through the Ls port and transmits a pressure feedback signal to the liquid charging priority valve, so that the hydraulic oil is controlled to enter the liquid charging valve from the liquid charging priority valve through the P port and enter the brake device from the output port.
4. A charging valve for a wet brake charging control system according to claim 3, characterized in that said valve body is further provided with a low pressure alarm SW-port communicating with a pressure detection valve.
5. The charging valve of a wet brake charging control system as claimed in claim 3, wherein inside the port P, the filter screen, the throttle valve, the check valve and the charging control valve set are sequentially communicated, a flow channel between the throttle valve and the check valve is communicated with the charging reversing valve set, the charging reversing valve set is respectively communicated with the port Ls and the port T, and the charging reversing valve set is further communicated with the flow channel between the check valve and the charging control valve set to collect pressure signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220854158.5U CN217435698U (en) | 2022-04-13 | 2022-04-13 | Wet-type braking liquid filling control system and liquid filling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220854158.5U CN217435698U (en) | 2022-04-13 | 2022-04-13 | Wet-type braking liquid filling control system and liquid filling valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217435698U true CN217435698U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220854158.5U Active CN217435698U (en) | 2022-04-13 | 2022-04-13 | Wet-type braking liquid filling control system and liquid filling valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217435698U (en) |
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2022
- 2022-04-13 CN CN202220854158.5U patent/CN217435698U/en active Active
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