CN205498924U - Hydraulic pressure little progress braking system - Google Patents
Hydraulic pressure little progress braking system Download PDFInfo
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- CN205498924U CN205498924U CN201620332131.4U CN201620332131U CN205498924U CN 205498924 U CN205498924 U CN 205498924U CN 201620332131 U CN201620332131 U CN 201620332131U CN 205498924 U CN205498924 U CN 205498924U
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Abstract
The utility model relates to a braking field, specific hydraulic pressure little progress braking system that says so, including the hydraulic pump, the oil tank, the prefill valve, the parking braking valve, the axle, the driving treadle valve, the inlet port of hydraulic pump links to each other with the oil tank, the oil -out output the high pressrue hydraulic oil arrival of hydraulic pump and the oil inlet P mouth of prefill valve, the first oil -out of prefill valve links to each other with the parking braking valve through first high -pressure oil circuit, prefill valve second oil -out links to each other with the driving treadle valve through second high pressure oil circuit, wherein, the parking braking valve links to each other with the axle through the parking braking return circuit, the driving treadle valve links to each other with the axle through driving brake circuit, its characterized in that is equipped with hydraulic pressure little progress valve, hydraulic pressure little progress valve and driving treadle valve are through mechanical linkage, be equipped with IP hydraulic fluid port and IS hydraulic fluid port on the hydraulic pressure little progress valve respectively, the IP hydraulic fluid port is connected with the hydraulic pump control high pressure phase, the IS hydraulic fluid port is connected with hydraulic pump control low pressure. The utility model has the advantages of control facility, low in production cost, security height.
Description
Technical field
This utility model relates to brake field, a kind of convenient for control, production cost is low, safety is high hydraulic pressure little progress brakes.
Background technology
Handling to logistics vehicles due to people and comfortableness requirement is more and more higher so that the telescopic arm forklift of current domestic and international medium and small tonnage is increasingly employed hydrostatic running gear.This hydrostatic running gear simple to operate, only advance neutral retreats three gears, when needing vehicle to advance, it is only necessary to gear being set in forward gear, releasing of brake, moderately steps on acceleration/gas pedal, vehicle will advance, otherwise during retrogressing.Generally in the case of the drive mechanism parameter holdings such as electromotor, hydraulic pump motor, vehicle bridge, tire are constant, the speed of travel of vehicle depends primarily on vehicle integrated load and engine speed, and within the working cycle that certain is shorter, vehicle integrated load is the most more stable, and speed is substantially dependent upon engine speed.This will produce a problem, and vehicle is when low speed is wriggled, and engine speed is too low so that it is cannot provide enough operation power for the telescopic arm of upper dress, the hydraulic pressure little progress brakes of this patent just can successfully solve this difficult problem.
Summary of the invention
In order to solve deficiency of the prior art, this utility model aims to provide a kind of convenient for control, production cost is low, safety is high hydraulic pressure little progress brakes.
In order to realize above-mentioned functions, this utility model will by the following technical solutions:
A kind of hydraulic pressure little progress brakes, including hydraulic pump, fuel tank, replenishing valve, braking valve for vehicle, vehicle bridge, driving treadle valve, the inlet port of hydraulic pump is connected with fuel tank, the oil-out output high pressure liquid force feed of hydraulic pump arrives the oil inlet P mouth with replenishing valve, replenishing valve the first oil-out is connected with braking valve for vehicle through the first high-pressure oil passage, replenishing valve the second oil-out is connected with driving treadle valve through the second high-pressure oil passage, wherein, braking valve for vehicle is connected with vehicle bridge through parking brake loop, driving treadle valve is connected with vehicle bridge through service brake loop, it is characterized in that being provided with hydraulic pressure little progress valve, hydraulic pressure little progress valve and driving treadle valve are through mechanical linkage, IP hydraulic fluid port and IS hydraulic fluid port it is respectively equipped with on hydraulic pressure little progress valve, IP hydraulic fluid port is connected with hydraulic pump control high pressure phase, IS hydraulic fluid port is connected with hydraulic pump control low pressure.
Hydraulic pressure little progress valve described in the utility model and the driving integrated little progress of treadle valve/driving treadle valve, replenishing valve the second oil-out is connected with little progress/driving treadle valve through the second high-pressure oil passage, makes hydraulic pressure little progress brakes duty more stable reliably, and security performance is good.
Replenishing valve described in the utility model and the integrated topping up/braking valve for vehicle of braking valve for vehicle, replenishing valve the first oil-out is connected with braking valve for vehicle through the first high-pressure oil passage, makes hydraulic pressure little progress brakes duty more stable reliably, and security performance is good.
Vehicle bridge described in the utility model is contained on traveling vehicle chassis, and vehicle bridge is at least integrated with running brake and parking brake.
Braking valve for vehicle described in the utility model is electric controlled car standing braking valve, and braking valve for vehicle is provided with electromagnetic valve.
Owing to replenishing valve the second oil-out is connected with little progress/driving treadle valve through the second high-pressure oil passage, when stepping on treadle valve, just from the brake fluid force feed of driving treadle valve oil-out output certain pressure through service brake pipeline, arrive the running brake of vehicle bridge, make vehicle deceleration.The angle that the output pressure of driving treadle valve oil-out is stepped on to pedal is directly proportional.Little progress valve in this assembly is mechanical linkage with driving treadle valve, when i.e. stepping on pedal, little progress valve also and then slides, so that IP mouth and IS mouth are gradually switched on, complete progressively separating of car load power-transmitting part and chassis driver part, little progress valve IP mouth and the connect oil sources of IS mouth are from power drive system, are incoherent with the hydraulic oil of hydraulic pump output.When progressively lifting treadle valve, the pressure of the brake fluid force feed of driving treadle valve oil-out output is gradually decrease to zero, the service brake resistance that i.e. vehicle is lost, the IP mouth of little progress valve is gradually turned off with IS mouth simultaneously, completing progressively being combined of complete machine power-transmitting part and chassis driver part, vehicle has had a determined power.
Owing to replenishing valve the first oil-out is connected with braking valve for vehicle through the first high-pressure oil passage, after first via hydraulic oil arrival braking valve for vehicle, the pressure of hydraulic oil is adjusted to a definite value, stand ready, when needing vehicle to advance, solenoid valves is opened, from the value of pressure oil of braking valve for vehicle oil-out output, arrives the parking brake of vehicle bridge through parking braking pipeline, the parking braking power of freeing vehicle, the most not by the resistance of parking brake when vehicle is advanced.Otherwise, when the vehicle is stopped, especially it being parked on ramp, only electromagnetic valve power-off need to be reduced to zero from the pressure of braking valve for vehicle oil-out, the now parking brake locking of vehicle, vehicle is the most firmly parked on road surface.
Owing to using hydraulic pressure little progress brakes, this utility model has the advantages that
(1) electromotor installed power is reduced, it is achieved energy-saving and emission-reduction.
The engine power distribution with hydraulic pressure little progress function optimization, reduces the requirement to engine power, reduces work pump delivery, decrease discharge, effectively protect the environment of workplace.
(2) hydraulically achieving little progress function, whole system is prone to maintenance.
This hydraulic pressure little progress system only has two hydraulic fluid ports, is not in contact with the fluid of brake fluid system, it is easy to user changes parts and maintenance.This hydraulic pressure little progress can allow vehicle lean on the hydrostatic braking at any time, compares brake, the most more heavily brake fail saves.
(3) reduce the use frequency of brake, both improve safety, and saved again and used car cost.
Because using hydraulic pressure little progress under any circumstance can control car speed, it is not necessary to brake by mechanical friction, reducing friction pairs of brake loss, reducing and use car cost, improving safety.Additionally, little progress/braking less investment, the intelligentized control method of pump motor requires low, reduces complete machine cost, improve its cost performance and competitiveness.
(4) convenient for control, the suitability is strong.
Use hydraulic control, easy to maintenance, the know-how of terminal use is required relatively low；Hydraulic pressure little progress and two kinds of functions of hydraulic braking being united two into one, the pedal of vehicle simplifies two pedals of car, i.e. little progress/brake pedal and gas pedal, manipulates relatively easy facility.This hydraulic pressure little progress brakes can be widely used in and promotes on the types such as telescopic arm forklift, All-terrain Forklift, container, front handling mobile crane, loader.
Accompanying drawing explanation
Fig. 1 is hydraulic pressure little progress brakes block diagram.
Fig. 2 is car load hydrostatic transmissions schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is further described:
nullA kind of hydraulic pressure little progress brakes，Including hydraulic pump、Fuel tank、Replenishing valve、Braking valve for vehicle、Vehicle bridge、Driving treadle valve，The inlet port of hydraulic pump is connected with fuel tank，The oil-out output high pressure liquid force feed of hydraulic pump arrives the oil inlet P mouth with replenishing valve，Replenishing valve the first oil-out is connected with braking valve for vehicle through the first high-pressure oil passage，Described braking valve for vehicle is electric controlled car standing braking valve，Braking valve for vehicle is provided with electromagnetic valve，In order to make hydraulic pressure little progress brakes duty more stable reliably、Security performance is more preferable，Can be by replenishing valve and the integrated topping up/braking valve for vehicle of braking valve for vehicle，Replenishing valve the second oil-out is connected with driving treadle valve through the second high-pressure oil passage，Braking valve for vehicle is connected with vehicle bridge through parking brake loop，Driving treadle valve is connected with vehicle bridge through service brake loop，Wherein vehicle bridge is contained on traveling vehicle chassis，Vehicle bridge is at least integrated with running brake and parking brake.This utility model is provided with hydraulic pressure little progress valve, hydraulic pressure little progress valve and driving treadle valve are through mechanical linkage, in order to make, hydraulic pressure little progress brakes duty is more stable reliably, security performance is more preferable, can be by hydraulic pressure little progress valve and the driving integrated little progress of treadle valve/driving treadle valve；It is respectively equipped with IP hydraulic fluid port on hydraulic pressure little progress valve, with IS hydraulic fluid port, wherein IP hydraulic fluid port is from the hydraulic oil being controlled pumpage, and IS mouth flows to the low pressure oil being controlled pumpage, IP hydraulic fluid port is connected with hydraulic pump control high pressure phase, and IS hydraulic fluid port is connected with hydraulic pump control low pressure.
Owing to replenishing valve the second oil-out is connected with little progress/driving treadle valve through the second high-pressure oil passage, when stepping on treadle valve, just from the brake fluid force feed of driving treadle valve oil-out output certain pressure through service brake pipeline, arrive the running brake of vehicle bridge, make vehicle deceleration.The angle that the output pressure of driving treadle valve oil-out is stepped on to pedal is directly proportional.Little progress valve in this assembly is mechanical linkage with driving treadle valve, when i.e. stepping on pedal, little progress valve also and then slides, so that IP mouth and IS mouth are gradually switched on, complete progressively separating of car load power-transmitting part and chassis driver part, little progress valve IP mouth and the connect oil sources of IS mouth are from power drive system, are incoherent with the hydraulic oil of hydraulic pump output.When progressively lifting treadle valve, the pressure of the brake fluid force feed of driving treadle valve oil-out output is gradually decrease to zero, the service brake resistance that i.e. vehicle is lost, the IP mouth of little progress valve is gradually turned off with IS mouth simultaneously, completing progressively being combined of complete machine power-transmitting part and chassis driver part, vehicle has had a determined power.
Owing to replenishing valve the first oil-out is connected with braking valve for vehicle through the first high-pressure oil passage, after first via hydraulic oil arrival braking valve for vehicle, the pressure of hydraulic oil is adjusted to a definite value, stand ready, when needing vehicle to advance, solenoid valves is opened, from the value of pressure oil of braking valve for vehicle oil-out output, arrives the parking brake of vehicle bridge through parking braking pipeline, the parking braking power of freeing vehicle, the most not by the resistance of parking brake when vehicle is advanced.Otherwise, when the vehicle is stopped, especially it being parked on ramp, only electromagnetic valve power-off need to be reduced to zero from the pressure of braking valve for vehicle oil-out, the now parking brake locking of vehicle, vehicle is the most firmly parked on road surface.
Owing to using hydraulic pressure little progress brakes, this utility model has the advantages that
(1) electromotor installed power is reduced, it is achieved energy-saving and emission-reduction.
The engine power distribution with hydraulic pressure little progress function optimization, reduces the requirement to engine power, reduces work pump delivery, decrease discharge, effectively protect the environment of workplace.
(2) hydraulically achieving little progress function, whole system is prone to maintenance.
This hydraulic pressure little progress system only has two hydraulic fluid ports, is not in contact with the fluid of brake fluid system, it is easy to user changes parts and maintenance.This hydraulic pressure little progress can allow vehicle lean on the hydrostatic braking at any time, compares brake, the most more heavily brake fail saves.
(3) reduce the use frequency of brake, both improve safety, and saved again and used car cost.
Because using hydraulic pressure little progress under any circumstance can control car speed, it is not necessary to brake by mechanical friction, reducing friction pairs of brake loss, reducing and use car cost, improving safety.Additionally, little progress/braking less investment, the intelligentized control method of pump motor requires low, reduces complete machine cost, improve its cost performance and competitiveness.
(4) convenient for control, the suitability is strong.
Use hydraulic control, easy to maintenance, the know-how of terminal use is required relatively low；Hydraulic pressure little progress and two kinds of functions of hydraulic braking being united two into one, the pedal of vehicle simplifies two pedals of car, i.e. little progress/brake pedal and gas pedal, manipulates relatively easy facility.This hydraulic pressure little progress brakes can be widely used in and promotes on the types such as telescopic arm forklift, All-terrain Forklift, container, front handling mobile crane, loader.
Claims (5)
1. a hydraulic pressure little progress brakes, including hydraulic pump, fuel tank, replenishing valve, braking valve for vehicle, vehicle bridge, driving treadle valve, the inlet port of hydraulic pump is connected with fuel tank, the oil-out output high pressure liquid force feed of hydraulic pump arrives the oil inlet P mouth with replenishing valve, replenishing valve the first oil-out is connected with braking valve for vehicle through the first high-pressure oil passage, replenishing valve the second oil-out is connected with driving treadle valve through the second high-pressure oil passage, wherein, braking valve for vehicle is connected with vehicle bridge through parking brake loop, driving treadle valve is connected with vehicle bridge through service brake loop, it is characterized in that being provided with hydraulic pressure little progress valve, hydraulic pressure little progress valve and driving treadle valve are through mechanical linkage, IP hydraulic fluid port and IS hydraulic fluid port it is respectively equipped with on hydraulic pressure little progress valve, IP hydraulic fluid port is connected with hydraulic pump control high pressure phase, IS hydraulic fluid port is connected with hydraulic pump control low pressure.
A kind of hydraulic pressure little progress brakes the most according to claim 1, it is characterised in that hydraulic pressure little progress valve and the driving integrated little progress of treadle valve/driving treadle valve, replenishing valve the second oil-out is connected with little progress/driving treadle valve through the second high-pressure oil passage.
A kind of hydraulic pressure little progress brakes the most according to claim 1, it is characterised in that replenishing valve and the integrated topping up/braking valve for vehicle of braking valve for vehicle, replenishing valve the first oil-out is connected with braking valve for vehicle through the first high-pressure oil passage.
A kind of hydraulic pressure little progress brakes the most according to claim 1, it is characterised in that vehicle bridge is contained on traveling vehicle chassis, and vehicle bridge is at least integrated with running brake and parking brake.
A kind of hydraulic pressure little progress brakes the most according to claim 1, it is characterised in that braking valve for vehicle is electric controlled car standing braking valve, and braking valve for vehicle is provided with electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620332131.4U CN205498924U (en) | 2016-04-20 | 2016-04-20 | Hydraulic pressure little progress braking system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620332131.4U CN205498924U (en) | 2016-04-20 | 2016-04-20 | Hydraulic pressure little progress braking system |
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| CN205498924U true CN205498924U (en) | 2016-08-24 |
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| CN201620332131.4U Active CN205498924U (en) | 2016-04-20 | 2016-04-20 | Hydraulic pressure little progress braking system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108146245A (en) * | 2017-12-29 | 2018-06-12 | 航天重型工程装备有限公司 | A kind of control system of preventing engine hypervelocity |
| CN108859779A (en) * | 2018-05-11 | 2018-11-23 | 中国煤炭科工集团太原研究院有限公司 | A kind of alternating-current variable frequency power drives the electro-hydraulic coupling braking system of haulage vehicle and control method |
| CN109441899A (en) * | 2018-12-05 | 2019-03-08 | 徐工消防安全装备有限公司 | Walking chassis control system and engineering machinery |
| CN113785695A (en) * | 2021-10-11 | 2021-12-14 | 中国铁建重工集团股份有限公司 | Wheel limit hydraulic drive traveling system and cotton picker |
-
2016
- 2016-04-20 CN CN201620332131.4U patent/CN205498924U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108146245A (en) * | 2017-12-29 | 2018-06-12 | 航天重型工程装备有限公司 | A kind of control system of preventing engine hypervelocity |
| CN108859779A (en) * | 2018-05-11 | 2018-11-23 | 中国煤炭科工集团太原研究院有限公司 | A kind of alternating-current variable frequency power drives the electro-hydraulic coupling braking system of haulage vehicle and control method |
| CN108859779B (en) * | 2018-05-11 | 2020-07-03 | 中国煤炭科工集团太原研究院有限公司 | Electro-hydraulic coupling braking system of alternating-current variable-frequency electric-driven transport vehicle and control method |
| CN109441899A (en) * | 2018-12-05 | 2019-03-08 | 徐工消防安全装备有限公司 | Walking chassis control system and engineering machinery |
| CN109441899B (en) * | 2018-12-05 | 2024-06-07 | 徐工消防安全装备有限公司 | Walking chassis control system and engineering machinery |
| CN113785695A (en) * | 2021-10-11 | 2021-12-14 | 中国铁建重工集团股份有限公司 | Wheel limit hydraulic drive traveling system and cotton picker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Hydraulic pressure little progress braking system Effective date of registration: 20170920 Granted publication date: 20160824 Pledgee: Weihai City Commercial Bank Limited by Share Ltd high tech branch Pledgor: Weihai HHH Electromechanical Co., Ltd. Registration number: 2017990000889 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220422 Granted publication date: 20160824 Pledgee: Weihai City Commercial Bank Limited by Share Ltd. high tech branch Pledgor: WEIHAI HHH COOPERATION MACH.&ELEC. CO.,LTD. Registration number: 2017990000889 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |