CN202911727U - Braking system of wheel loader - Google Patents
Braking system of wheel loader Download PDFInfo
- Publication number
- CN202911727U CN202911727U CN 201220525395 CN201220525395U CN202911727U CN 202911727 U CN202911727 U CN 202911727U CN 201220525395 CN201220525395 CN 201220525395 CN 201220525395 U CN201220525395 U CN 201220525395U CN 202911727 U CN202911727 U CN 202911727U
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- brake
- braking
- valve
- booster pump
- braking system
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Abstract
The utility model discloses a braking system of a wheel loader. The braking system of the wheel loader comprises an air compressor, the air compressor is connected with an air reservoir through an unloading valve, the air reservoir is respectively connected with a foot brake valve and a hand brake valve, the foot brake valve is respectively connected with a front axle booster pump and a rear axle booster pump, the front axle booster pump is connected with four driving brakes, and the hand brake valve is connected with a cutting-off cylinder. The braking system of the wheel loader is characterized in that the rear axle booster pump is connected with two driving brakes, and the hand brake valve is further connected with a parking brake booster which is connected with two parking brakes. The braking system of the wheel loader has the advantages of being simple to arrange, reasonable, reliable, high in safety performance and the like.
Description
Technical field
The utility model relates to a kind of brake system of wheel type loader, belongs to the mechanical loader braking system field.
Background technology
Brake system relates to the important system of loader complete machine safety, directly affects the work efficiency of complete machine, also is related to the safety of the person and machine simultaneously.
Most loaders all adopt brake system as shown in Figure 1 in the market, comprise two parts of service brake and braking during standstill.Wherein, air compressor 1 series connection unloader valve 2 and air receiver 3 rear connecting pin brake activation valves 8, foot brake valves 8 also connects propons booster pump 9 and rear axle boost pump 10, propons booster pump 9 and rear axle boost pump 10 are fastened on respectively the running brake 11 on the bridge, four drgs of every bridge mean allocation consist of stroke brake system part.Draw one road gas from air receiver 3 again and connect respectively cut-out cylinder 5 and braking during standstill air chamber 14 formation braking during standstill parts by hand braking valve 4, the input end of foot brake valves 8 is connected with air-pressure gauge 6, and the mouth of foot brake valves 8 is connected with stop lamp switch 7.System's braking during standstill part of this kind structure need to increase at change speed gear box output flange place Parking Brake and brake disc, and because compressed air brake cylinder also must be contained in herein, often can cause the piping layout difficulty of loader hydraulic system, makes overall design increase difficulty.The propons axle load was heavier when loader was worked on the other hand, accounted for the 60%-70% of gross laden weight, and the actual required braking force of front-rear axle differs greatly like this, and forward and backward bridge arranges that respectively 4 identical drgs are obviously reasonable not.
Summary of the invention
The purpose of this utility model is to solve the piping layout difficulty of loader hydraulic system and unreasonable, and the problem that design difficulty is large provides a kind of simple, reasonable brake system of reliable, wheel type loader that safety performance is high of arranging.
In order to achieve the above object, the utility model provides a kind of brake system of wheel type loader, comprise air compressor, air compressor is connected with air receiver by unloader valve, air receiver respectively with foot brake valves, hand braking valve connects, foot brake valves respectively with the propons booster pump, the rear axle boost pump connects, the propons booster pump is connected with 4 running brake, hand braking valve is connected with the cut-out cylinder, it is characterized in that, described rear axle boost pump is connected with 2 running brake, and described hand braking valve also is connected with the braking during standstill assistor, and the braking during standstill assistor is connected with 2 Parking Brakes.
The utility model is cancelled original Parking chamber of taking offence, increase the braking during standstill assistor, and the required braking force of forward and backward bridge is different when utilizing the loader operation, and two drgs of back axle are come usefulness as Parking Brake, so that the braking force of the braking during standstill of complete machine becomes is large, reliability increases.It is simple, rationally reliable that overall design of the present utility model is arranged, improved greatly the safety performance of loader complete machine brake system, reduced the parts of complete machine, is convenient to problem investigation and maintenance.
Description of drawings
Fig. 1 is the schematic diagram of existing common wheeled mechanical loader braking system;
Fig. 2 is a kind of schematic diagram of brake system of wheel type loader.
Description of reference numerals
1 is air compressor, and 2 is unloader valve, and 3 is air receiver, 4 is hand braking valve, and 5 for cutting off cylinder, and 6 is air-pressure gauge, 7 is stop lamp switch, 8 is foot brake valves, and 9 is the propons booster pump, and 10 is the rear axle boost pump, 11 is running brake, 12 is Parking Brake, and 13 is the braking during standstill assistor, and 14 are the Parking chamber of taking offence.
The specific embodiment
For the utility model is become apparent, hereby with preferred embodiment, and cooperate accompanying drawing to be described in detail below.
Embodiment 1
The utility model is a kind of brake system of wheel type loader, and brake system comprises two parts: service brake and emergency brake system have the function of emergency braking simultaneously.As shown in Figure 2, be a kind of schematic diagram of brake system of wheel type loader.Air compressor 1 is connected with air receiver 3 by unloader valve 2, air receiver 3 is connected with foot brake valves 8, hand braking valve 4 respectively, foot brake valves 8 is connected with propons booster pump 9, rear axle boost pump 10 respectively, propons booster pump 9 is connected with 4 running brake 11, rear axle boost pump 10 is connected with 2 running brake 11, hand braking valve 4 is connected with cut-out cylinder 5, braking during standstill assistor 13 respectively, and braking during standstill assistor 13 is connected with 2 Parking Brakes 12.Therefore as can be known, the deployment scenarios of running brake 11 is 2 on 4 back axles of propons, and Parking Brake 12 divides 2 equally and is fixed on the back axle, shares brake discs with running brake 11, has significantly improved the braking during standstill ability.
Wherein, the input end of foot brake valves 8 also is connected with air-pressure gauge 6, and the mouth of foot brake valves 8 also is connected with stop lamp switch 7.
The required braking force difference of forward and backward bridge when the utility model utilizes the loader operation, each of four running brake 11 on the script service brake part back axle taken turns the limit respectively get a drg that is used as braking during standstill, it is Parking Brake 12, and cancel braking during standstill air chamber 14 (as shown in Figure 1), produce high pressure oil by braking during standstill assistor 13, the parking braking function of complete machine is implemented in Parking Brake 12 effects.
Service condition of the present utility model is as follows:
The pressure gas that Air compressor produces through unloader valve 2 to air receiver 3, when the driver steps on foot brake valves 8, pressure gas wind is clipped to and reaches propons booster pump 9 and rear axle boost pump 10, the brake piston enforcement service brake that the high pressure oil that is produced by booster pump promotes respectively to be fixed in running brake 11 inside on the front-rear axle; Driver's pull-up hand braking valve 4 after flame-out the parking, cutting off the pressure gas of cylinder 5 and braking during standstill assistor 13 inside discharges by the exhausr port of hand braking valve 4, cut off cylinder 5 and promote valve rod cut-out change speed gear box outputting power under the operation of spring, braking during standstill assistor 13 produces equally high pressure oil and carries out braking during standstill under action of the spring; When air receiver 3 internal gas pressure deficiencies or conduit failure cause the air pressure rapid drawdown of brake system, hand braking valve 4 takeoffs automatically, the gas circuit of breaking, and braking during standstill assistor 13 produces high pressure oil by inner spring pushing piston, so that braking is implemented in Parking Brake 12 effects, realize emergency braking function.
Claims (1)
1. the brake system of a wheel type loader, comprise air compressor (1), air compressor (1) is connected with air receiver (3) by unloader valve (2), air receiver (3) respectively with foot brake valves (8), hand braking valve (4) connects, foot brake valves (8) respectively with propons booster pump (9), rear axle boost pump (10) connects, propons booster pump (9) is connected with 4 running brake (11), hand braking valve (4) is connected with cut-out cylinder (5), it is characterized in that, described rear axle boost pump (10) is connected with 2 running brake (11), described hand braking valve (4) also is connected with braking during standstill assistor (13), and braking during standstill assistor (13) is connected with 2 Parking Brakes (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220525395 CN202911727U (en) | 2012-10-12 | 2012-10-12 | Braking system of wheel loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220525395 CN202911727U (en) | 2012-10-12 | 2012-10-12 | Braking system of wheel loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202911727U true CN202911727U (en) | 2013-05-01 |
Family
ID=48160062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220525395 Expired - Fee Related CN202911727U (en) | 2012-10-12 | 2012-10-12 | Braking system of wheel loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202911727U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935350A (en) * | 2014-04-15 | 2014-07-23 | 三一矿机有限公司 | Gas-liquid composite braking structure and mining mechanical vehicle |
| CN110065483A (en) * | 2019-04-10 | 2019-07-30 | 徐工集团工程机械股份有限公司科技分公司 | A kind of normally closed type wet brake system |
| CN113232635A (en) * | 2021-06-03 | 2021-08-10 | 北京汽车集团越野车有限公司 | Gas-cap-liquid braking system, gas-cap-liquid braking method and vehicle |
| CN115027433A (en) * | 2022-05-05 | 2022-09-09 | 北京汽车集团越野车有限公司 | Braking system and vehicle |
-
2012
- 2012-10-12 CN CN 201220525395 patent/CN202911727U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935350A (en) * | 2014-04-15 | 2014-07-23 | 三一矿机有限公司 | Gas-liquid composite braking structure and mining mechanical vehicle |
| CN103935350B (en) * | 2014-04-15 | 2017-02-01 | 三一重型装备有限公司 | Gas-liquid composite braking structure and mining mechanical vehicle |
| CN110065483A (en) * | 2019-04-10 | 2019-07-30 | 徐工集团工程机械股份有限公司科技分公司 | A kind of normally closed type wet brake system |
| CN110065483B (en) * | 2019-04-10 | 2023-11-10 | 徐工集团工程机械股份有限公司科技分公司 | Normally closed wet braking system |
| CN113232635A (en) * | 2021-06-03 | 2021-08-10 | 北京汽车集团越野车有限公司 | Gas-cap-liquid braking system, gas-cap-liquid braking method and vehicle |
| CN115027433A (en) * | 2022-05-05 | 2022-09-09 | 北京汽车集团越野车有限公司 | Braking system and vehicle |
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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: 20130501 Termination date: 20151012 |
|
| EXPY | Termination of patent right or utility model |