CN203543931U - Double-pedal fully-hydraulic brake system for wheel loader - Google Patents
Double-pedal fully-hydraulic brake system for wheel loader Download PDFInfo
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- CN203543931U CN203543931U CN201320633288.7U CN201320633288U CN203543931U CN 203543931 U CN203543931 U CN 203543931U CN 201320633288 U CN201320633288 U CN 201320633288U CN 203543931 U CN203543931 U CN 203543931U
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- foot brake
- brake valves
- double
- valve
- brake valve
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Abstract
The utility model discloses a double-pedal fully-hydraulic brake system for a wheel loader. The system is characterized in that an oil way outlet of a charging valve is connected with an energy accumulator, a pressure oil inlet of a one-way pilot foot brake valve and a pressure oil inlet of a double-cavity foot brake valve respectively, and an oil way outlet of the charging valve is connected with another energy accumulator and another pressure oil inlet of the double-cavity foot brake valve respectively, wherein the one-way pilot foot brake valve is provided with a power cutting-off switch, and is connected with the double-cavity foot brake valve; one oil way outlet of the double-cavity foot brake valve is connected with a brake lamp switch and wheel-side brakes, and the other oil way outlet of the double-cavity foot brake valve is connected with other two wheel-side brakes; oil return ports of the one-way pilot foot brake valve, the double-cavity foot brake valve and the charging valve are connected with a hydraulic oil tank assembly. According to the system, the pilot oil of a left foot brake valve is used for controlling a valve stem of a right foot brake valve to realize the control of double pedals on the brake system, a simple and reasonable principle is adopted, and the system can stably and reliably work.
Description
Technical field
The utility model relates to a kind of for the brake system on wheel type loader, belongs to loader technical applications.
Background technology
Brake system relates to the important system of loader complete machine safety, directly affects the work efficiency of complete machine, is also related to the safety of the person and machine simultaneously.
At present, tradition full power hydraulic brake system as shown in Figure 1, comprise hydraulic reservoir assembly 7, hydraulic reservoir assembly 7 is connected with the pressure oil import P1 of prefill valve 2 by brake pump 1, the oil circuit of prefill valve 2 exports an A1, oil circuit exports an energy storage 3 of the each connection of two B2, and the oil circuit of prefill valve 2 exports an A1, oil circuit exports two B2 and is also connected with pressure oil import one P2, pressure oil import two P2 ' of foot brake valves 4 respectively; The oil circuit of foot brake valves 4 exports an A2 and connects respectively a stop lamp switch 5, two rim brakes 6; The oil circuit of foot brake valves 4 exports two B2 and connects two rim brakes 6; The oil return inlet T 1 of prefill valve 2, the oil return inlet T 2 of foot brake valves 4 are all connected with hydraulic reservoir assembly 7; The outgate O of prefill valve 2 is connected with next stage hydraulic efficiency pressure system.The loader of tradition Full-hydraulic braking apparatus adopts single brake pedal and non-drive cutting function, and loader change speed gear box power when inserting material and lifting operation can not cut off, comparatively power consumption.
Summary of the invention
To be solved in the utility model is the not drive cutting function of loader of existing Full-hydraulic braking apparatus, comparatively the technical matters of power consumption.
In order to address the above problem, the utility model provides a kind of wheel type loader two pedal full power hydraulic brake system, comprise hydraulic reservoir assembly, hydraulic reservoir assembly is connected with the pressure oil import of prefill valve by brake pump, the outgate of prefill valve is connected with next stage hydraulic efficiency pressure system, it is characterized in that, the oil circuit outlet one of prefill valve is connected with an energy storage, the pressure oil import of single channel type pilot foot brake valves and the pressure oil import one of two-chamber foot brake valves respectively; The oil circuit outlet two of prefill valve is connected with the pressure oil import two of an energy storage and two-chamber foot brake valves respectively; Single channel type pilot foot brake valves is provided with power cut switch, and is connected with two-chamber foot brake valves; The oil circuit outlet one of two-chamber foot brake valves connects respectively stop lamp switch and two rim brakes; The oil circuit outlet two of two-chamber foot brake valves connects two rim brakes; The return opening of the return opening of single channel type pilot foot brake valves, the return opening of two-chamber foot brake valves, prefill valve is all connected with hydraulic reservoir assembly.
The high pressure oil that the utility model produces brake pump by double loop prefill valve is charged into respectively two energy storages, and draw respectively two-way high pressure oil to the pressure oil import of two-chamber foot brake valves that is positioned at operator's compartment right side from energy storage, two oil outlets of foot brake valves are connected respectively to the rim brake of forward and backward bridge, final high pressure oil effect brake inside piston is implemented braking, realizes loader and stops; The single channel type pilot foot brake valves oil inlet that is arranged in operator's compartment left side meets of two energy storages, oil outlet connects the pressure oil import of two-chamber foot brake valves, when stepping on single channel type pilot foot brake valves, the high pressure oil of coming from energy storage, through the decompression of type pilot foot brake valves, be applied to the valve rod of two-chamber foot brake valves, promotion valve rod moves down, the valve port of two-chamber foot brake valves is opened, complete machine is realized braking equally, meanwhile be assemblied in the power cut switch connection on type pilot foot brake valves, change speed gear box outputting power is cut off.
The utility model is realized two pedal to brake system control by the guide oil control right side foot brake valves valve rod of left side foot brake valves, principle advantages of simple, working stability is reliable, the utilization of single channel type pilot foot brake valves reduced complete machine layout and assembly difficulty, be convenient to problem investigation and maintenance.By two pedals, be used in conjunction with, loader operating efficiency is improved, Energy Intensity Reduction, has solved again simultaneously and when single pedal drive is cut off loader descending, has slipped the danger on slope, has improved the safety performance of brake system, makes complete machine more reasonable.
Accompanying drawing explanation
Fig. 1 is the structural representation of traditional full power hydraulic brake system;
Fig. 2 is the structural representation of wheel type loader two pedal full power hydraulic brake system.
The specific embodiment
For the utility model is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
Embodiment
As shown in Figure 2, for a kind of wheel type loader two pedal full power hydraulic brake system structural representation, comprise hydraulic reservoir assembly 7, hydraulic reservoir assembly 7 is connected with the pressure oil import P1 of prefill valve 2 by brake pump 1, and the outgate O of prefill valve 2 is connected with next stage hydraulic efficiency pressure system.The oil circuit of prefill valve 2 exports an A1 and is connected with the pressure oil import P4 of an energy storage 3, single channel type pilot foot brake valves 9 and pressure oil import one P3 of two-chamber foot brake valves 8 respectively.The oil circuit of prefill valve 2 exports two B1 and is connected with pressure oil import two P3 ' of an energy storage 3 and two-chamber foot brake valves 8 respectively.Single channel type pilot foot brake valves 9 is provided with power cut switch 10, and is connected with two-chamber foot brake valves 8.The oil circuit of two-chamber foot brake valves 8 exports an A3 and connects respectively stop lamp switch 5 and two rim brakes 6.The oil circuit of two-chamber foot brake valves 8 exports two B3 and connects two rim brakes 6.The oil return inlet T 1 of the oil return inlet T 4 of single channel type pilot foot brake valves 9, the oil return inlet T 3 of two-chamber foot brake valves 8, prefill valve 2 is all connected with hydraulic reservoir assembly 7.
The high pressure oil that brake pump 1 produces is charged into respectively two energy storages 3 through prefill valve 2, and draw respectively two-way high pressure oil to pressure oil import one P3 and pressure oil import two P3 ' of two-chamber foot brake valves 8 that are positioned at operator's compartment right side from energy storage 3, the oil circuit of two-chamber foot brake valves 8 exports an A3, oil circuit and exports two B3 and be connected respectively to the rim brake 8 of forward and backward bridge, final high pressure oil effect brake inside piston is implemented braking, realizes loader and stops, the pressure oil import P4 that is positioned at the single channel type pilot foot brake valves 9 in operator's compartment left side connects one of them energy storage 3, the oil outlet A4 of single channel type pilot foot brake valves 9 connects the pilot control opening PP of two-chamber foot brake valves 4, when stepping on single channel type pilot foot brake valves 9, the high pressure oil of coming from energy storage 3, through single channel type pilot foot brake valves 9, be applied to the valve rod of two-chamber foot brake valves 8, the valve port of two-chamber foot brake valves 8 is opened, complete machine is realized braking equally, the power cut switch 10 being meanwhile assemblied on single channel type pilot foot brake valves 9 is connected, change speed gear box outputting power is cut off.
Whole system two valves connect without connecting rod mechanism, by pipeline, connect, simple and compact for structure, handle light without clamping stagnation.Guarantee system complete machine brake system dependable performance, improved greatly the safety performance of loader complete machine brake system.
Claims (1)
1. a wheel type loader two pedal full power hydraulic brake system, comprise hydraulic reservoir assembly (7), hydraulic reservoir assembly (7) is connected with the pressure oil import (P1) of prefill valve (2) by brake pump (1), the outgate (O) of prefill valve (2) is connected with next stage hydraulic efficiency pressure system, it is characterized in that, oil circuit outlet one (A1) of prefill valve (2) respectively with an energy storage (3), the pressure oil import (P4) of single channel type pilot foot brake valves (9) and the pressure oil import one (P3) of two-chamber foot brake valves (8) connect, oil circuit outlet two (B1) of prefill valve (2) are connected with the pressure oil import two of an energy storage (3) and two-chamber foot brake valves (8) (P3 ') respectively, single channel type pilot foot brake valves (9) is provided with power cut switch (10), and is connected with two-chamber foot brake valves (8), oil circuit outlet one (A3) of two-chamber foot brake valves (8) connects respectively stop lamp switch (5) and two rim brakes (6), the oil circuit outlet two (B3) of two-chamber foot brake valves (8) connects two rim brakes (6), the return opening (T1) of the return opening (T4) of single channel type pilot foot brake valves (9), the return opening (T3) of two-chamber foot brake valves (8), prefill valve (2) is all connected with hydraulic reservoir assembly (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320633288.7U CN203543931U (en) | 2013-10-14 | 2013-10-14 | Double-pedal fully-hydraulic brake system for wheel loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320633288.7U CN203543931U (en) | 2013-10-14 | 2013-10-14 | Double-pedal fully-hydraulic brake system for wheel loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203543931U true CN203543931U (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320633288.7U Expired - Fee Related CN203543931U (en) | 2013-10-14 | 2013-10-14 | Double-pedal fully-hydraulic brake system for wheel loader |
Country Status (1)
| Country | Link |
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| CN (1) | CN203543931U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221738A (en) * | 2014-05-27 | 2016-01-06 | 约翰迪尔（天津）有限公司 | Gearbox power cutoff control system, hydraulic braking sytem and method, traveling gear |
| CN113954799A (en) * | 2021-11-11 | 2022-01-21 | 郑州宇通重工有限公司 | Wheel type engineering equipment |
| CN114103900A (en) * | 2020-08-31 | 2022-03-01 | 比亚迪股份有限公司 | Hydraulic braking system and forklift |
| CN111775913B (en) * | 2020-07-28 | 2023-09-05 | 徐州徐工矿业机械有限公司 | Hydraulic emergency braking system of mining dump truck |
-
2013
- 2013-10-14 CN CN201320633288.7U patent/CN203543931U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221738A (en) * | 2014-05-27 | 2016-01-06 | 约翰迪尔（天津）有限公司 | Gearbox power cutoff control system, hydraulic braking sytem and method, traveling gear |
| CN105221738B (en) * | 2014-05-27 | 2019-03-15 | 约翰迪尔（天津）有限公司 | Gearbox power cutoff control system, brake fluid system and method, running gear |
| CN111775913B (en) * | 2020-07-28 | 2023-09-05 | 徐州徐工矿业机械有限公司 | Hydraulic emergency braking system of mining dump truck |
| CN114103900A (en) * | 2020-08-31 | 2022-03-01 | 比亚迪股份有限公司 | Hydraulic braking system and forklift |
| CN114103900B (en) * | 2020-08-31 | 2023-03-14 | 比亚迪股份有限公司 | Hydraulic braking system and forklift |
| CN113954799A (en) * | 2021-11-11 | 2022-01-21 | 郑州宇通重工有限公司 | Wheel type engineering equipment |
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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 |
Granted publication date: 20140416 Termination date: 20151014 |
|
| EXPY | Termination of patent right or utility model |