CN107063717A - A kind of device for detecting performance of fork truck energy storing brake system - Google Patents
A kind of device for detecting performance of fork truck energy storing brake system Download PDFInfo
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- CN107063717A CN107063717A CN201710419272.9A CN201710419272A CN107063717A CN 107063717 A CN107063717 A CN 107063717A CN 201710419272 A CN201710419272 A CN 201710419272A CN 107063717 A CN107063717 A CN 107063717A
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- brake
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- accumulator
- braking
- fork truck
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The present invention discloses a kind of device for detecting performance of fork truck energy storing brake system, including oil supply system and dynamic braking valve to be measured, and the dynamic braking valve is connected by fluid pressure line with accumulator, running brake respectively；The port of export of the oil supply system is connected with dynamic braking valve, accumulator, second pressure table respectively by four-way valve, and the accumulator is provided with the first pressure table for being used for detecting accumulator internal pressure；The braking mandril of the dynamic braking valve is connected by bearing pin with depression bar, by operating the braking mandril of depression bar propulsion power brake valve to realize braking maneuver；The running brake is arranged on brake hub.The present apparatus can not only detect whether accumulator, dynamic braking valve and connection fluid pressure line have the oily phenomenon of dew simultaneously, moreover it is possible to detect that accumulator, the interior of dynamic braking valve let out situation, and check whether running brake has whether clamping stagnation, brake cylinder have the failures such as leakage.
Description
Technical field
The present invention relates to fork truck energy storing brake system, and in particular to a kind of performance detection dress of fork truck energy storing brake system
Put.
Background technology
The service braking system of fork truck is mainly used in slowing down during fork truck traveling, and row of the control fork truck in descending
Sail speed.Security when fork truck is travelled, depends greatly on the reliability of brakes.By fork truck tonnage not
Together, below 3.5t fork trucks service braking system is mainly made up of master cylinder, brake, brake treadle mechanism, is stepped on braking and is stepped on
During plate, the brake fluid in master cylinder is sent to left and right brake wheel cylinder by brake pipe in the presence of piston, with certain pressure and pushed away
The piston of dynamic wheel cylinder, makes it be moved to both sides, so as to promote shoe brake to compress brake hub, produces braking action.And 5-10t is pitched
Car is because from great, braking distance is long, to fully ensure that security, current widely used full hydraulic power brake system, and this is
System is mainly made up of dynamic braking valve, running brake, accumulator and brake treadle mechanism.The great advantage of the system is：
Accumulator is introduced as auxiliary safety device, when hydraulic pump damage or engine misses, accumulator supplies the pressure oil of storage
Emergency power source is served as to system, system pressure is maintained within a period of time, it is ensured that system can still implement brake hard, it is to avoid oil
Danger when source is interrupted suddenly caused by brake failure, so as to ensure that the security of complete machine.
In view of non-muscular energy braking system part is more, component capabilities matching and self performance reliability are particularly important, special
It is not the dynamic braking valve and accumulator as safety device, its own sets up not enough and pressure with the presence or absence of leakage, pressure
Set up the phenomenon such as slow, the key project checked before being entrucking.Need to set up the performance detection stand of brake component for this, with
Realize to accumulator oil-out pressure and the test of stable output pressure number of times and the brake pressure test of dynamic braking valve and interior leakage
Judge, so as to pick out unqualified part, improve the test run percent of pass of vehicle.In addition, by the comprehensive analysis to unqualified part, will have
Help the technological improvement of product.
The content of the invention
It is an object of the invention to provide a kind of device for detecting performance of fork truck energy storing brake system, realize to fork truck accumulation of energy system
The performance of accumulator, dynamic braking valve and running brake in dynamic system is tested, and complies with vehicle needs.
Technical scheme is as follows：
A kind of device for detecting performance of fork truck energy storing brake system, including oil supply system and dynamic braking valve to be measured, it is described dynamic
Dynamic braking valve is connected by fluid pressure line with accumulator, running brake respectively；The port of export of the oil supply system passes through four-way
Valve is connected with dynamic braking valve, accumulator, second pressure table respectively, and the accumulator, which is provided with, is used to detect pressure inside accumulator
The first pressure table of power；The braking mandril of the dynamic braking valve is connected by bearing pin with depression bar, dynamic by operating depression bar to promote
The braking mandril of dynamic braking valve realizes braking maneuver；The running brake is arranged on brake hub.
Further scheme, the accumulator is provided with pressure alarm.
Further scheme, the oil supply system includes hydraulic oil container and motor pump group, the oil outlet end of the motor pump group according to
Secondary to be connected by solenoid directional control valve, check valve with the oil inlet of described four-way valve, the oil inlet end of the check valve passes through safety
Valve is connected with hydraulic oil container；Be provided with oil adsorption filter between hydraulic oil container and the motor pump group, safety valve and hydraulic oil container it
Between be provided with oil return cleaner.
Further scheme, the accumulator is arranged on underframe, and the dynamic braking valve is fixed by brake valve mounting bracket
On underframe；Depression bar support is installed with the underframe, the bottom of the depression bar is connected on depression bar support by bearing pin.
Further scheme, the top of the depression bar is arranged with sheath.
Further scheme, the running brake is installed with the top of fuel reserve tank, the service brake by mounting bracket
Connected between device and brake drum by splined shaft, the end of the splined shaft passes through locking nut and the method being connected on brake drum
Lock set is fastened between orchid.
Further scheme, the outer wall of the locking nut is symmetrically threaded with transmission rod；On the brake drum axially
Offer the peep hole for observing running brake.
Further scheme, the top of the fuel reserve tank offers oil inlet, and bottom is provided with purge cock.
Further scheme, between the dynamic braking valve and accumulator is connected by high-pressure rubber pipe, brake valve and driving
It is by braking fastener for connection between the brake cylinder of brake.
The detection means of the present invention, possesses advantages below：
1st, the present apparatus can not only detect whether accumulator, dynamic braking valve and connection fluid pressure line have the oily phenomenon of dew simultaneously, moreover it is possible to
Detection accumulator, the interior of dynamic braking valve let out situation, and check whether running brake has whether clamping stagnation, brake cylinder are let out
The failures such as leakage.
2nd, easy to install by test specimen in the present apparatus, testing efficiency is high；And test parameter is complete, pressure, leakage situation
It can accurately hold.
3rd, indicate that the pressure of accumulator sets up situation in the present apparatus by the first pressure table being located on accumulator, simultaneously
Observing system motor pump group is additionally operable in the case of shutdown, during accumulator progress auxiliary braking, braking number of times and pressure
Relation between power release, for judging accumulator auxiliary braking performance.
4th, the present apparatus is filtered between hydraulic oil container and motor pump group provided with oil adsorption filter to hydraulic oil, it is ensured that supplied
The pressure luboil cleanness given, is prevented due to hydraulic units such as oily pollution destruction dynamic braking valve, accumulators, and then influence detection essence
Degree.
5th, simulated by operating depression bar and brake pedal operating mode is stepped on vehicle, so that the breaking top of propulsion power brake valve
Bar, realizes damped condition；Because the lever ratio of depression bar reaches 7.26, manpower can light steering maneuver brake valve braking maneuver.
Brief description of the drawings
Fig. 1 is the hydraulic schematic diagram of the present invention；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is the scheme of installation of accumulator in the present invention and dynamic braking valve；
Fig. 4 is the scheme of installation of the running brake in the present invention.
In figure：1- hydraulic oil containers, 2- oil return cleaners, 3- safety valves, 4- accumulators, 5- pressure alarms, 6- first is pressed
Power table, 7- dynamic braking valves, 8- oil adsorption filters, 9- motor pump groups, 10- solenoid directional control valves, 11- check valves, 12- second pressures
Table, 13- four-way valves, 14- running brakes, 15- underframe, 16- brake valve mounting brackets, 17- depression bar supports, 18- depression bars, 19- shields
Covered between set, 20- fuel reserve tanks, 21- brake hubs, 22- mounting brackets, 23- method orchids, 24- transmission rods, 25- locking nuts, 26- flowers
Key axle, 27- oil supply systems, 28- high-pressure rubber pipes, 29- braking steel pipes.
Embodiment
As Figure 1-4, a kind of device for detecting performance of fork truck energy storing brake system, including oil supply system 27 and to be measured
Dynamic braking valve 7, the dynamic braking valve 7 is connected by fluid pressure line with accumulator 4, running brake 14 respectively；It is described to supply
The port of export of oil system 27 is connected with dynamic braking valve 7, accumulator 4, second pressure table 12 respectively by four-way valve 13, described to store
Energy device 4 is provided with the first pressure table 6 for being used for detecting accumulator internal pressure；The braking mandril of the dynamic braking valve 7 passes through
Bearing pin is connected with depression bar 18, by operating the braking mandril of the propulsion power brake valve 7 of depression bar 18 to realize braking maneuver；The driving
Brake 14 is arranged on brake hub 21.
Further scheme, the accumulator 4 is provided with pressure alarm 5.
Further scheme, as shown in figure 1, oil supply system 27 includes hydraulic oil container 1 and motor pump group 9, the motor pump group 9
Oil outlet end pass sequentially through solenoid directional control valve 10, check valve 11 and be connected with the oil inlet of described four-way valve 13, the check valve
11 oil inlet end is connected by safety valve 3 with hydraulic oil container 1；Oil suction filtering is provided between the hydraulic oil container 1 and motor pump group 9
Device 8, is provided with oil return cleaner 2 between safety valve 3 and hydraulic oil container 1.
Further scheme, as shown in figure 3, accumulator 4 is arranged on underframe 15, the dynamic braking valve 7 passes through brake valve
Mounting bracket 16 is installed on underframe 15；Depression bar support 17 is installed with the underframe 15, the bottom of the depression bar 18 passes through bearing pin
It is connected on depression bar support 17.
Further scheme, the top of the depression bar 18 is arranged with sheath 19, and the sheath 19 of quality of rubber materials can improve operation
Comfortableness.
Further scheme, as shown in figure 4, running brake 14 is installed with the top of fuel reserve tank 20 by mounting bracket 22,
Connected between the running brake 14 and brake drum 21 by splined shaft 26, the end of the splined shaft 26 passes through locking nut
Set 23 is locked between 25 and the method orchid that is connected on brake drum 21.Prevent flange spline housing 23 from producing axle together with brake hub 21
To slip.
Further scheme, the outer wall of the locking nut 25 is symmetrically threaded with transmission rod 24；The brake drum 21
Upper axial direction offers the peep hole for observing running brake 14.The inside of running brake 14 is observed by the peep hole dynamic
Make, check whether running brake 14 has whether clamping stagnation, brake cylinder there are the failures such as leakage；
Because the size of locking nut 25 is larger, to realize smoothly locking, spy is machined with symmetrical on the outer wall of locking nut 25
Screwed hole, install transmission rod 24, screwing or unscrew by operating transmission rod 24 that locking nut 25 can be achieved, facilitating
Operating personnel's manual teardown.
Further scheme, the top of the fuel reserve tank 20 offers oil inlet, and bottom is provided with purge cock.
Further scheme, between the dynamic braking valve 7 and accumulator 4 is connected by high-pressure rubber pipe 28, brake valve 7 with
It is to be connected by braking steel pipe 29 between the brake cylinder of running brake 14.
Oil supply system 27 is used for two-stage system pressure setting in the present invention, to meet accumulator, the system of different pressures grade
Dynamic valve test demand, without interim regulating system pressure.
Accumulator 4 is used for pressure store oil, implements the brake hard under catastrophic failure.
Pressure alarm 5 is used to simulate vehicle pressure alarm function, when the pressure inside accumulator 4 sets up not up to standard,
Warning function is provided.
First pressure table 6 is used to indicate that the pressure of accumulator 4 sets up situation, while existing for observing system motor pump group 9
In the case of shutdown, during the progress auxiliary braking of accumulator 4, the relation between braking number of times and pressure release, for sentencing
Determine accumulator auxiliary braking performance.Second pressure table 12 is used to indicate system pressure, and four-way valve 13 is used for the shunting of oil circuit, driving
Brake is used to simulate vehicle service brake operating mode.
Dynamic braking valve 7 as before entrucking by test specimen, for simulating vehicle dynamic braking action, while detecting brake valve
Brake pressure and internal leakage, it is ensured that entrucking brake valve is qualified products.
Oil adsorption filter 8 is used for filtration system hydraulic oil, it is ensured that the pressure luboil cleanness of supply, prevents because oily pollution is broken
The hydraulic units such as bad dynamic braking valve 7, accumulator 4, and then influence accuracy of detection.
Motor pump group 9 is to be made up of motor with hydraulic pump, for providing a system to pressure oil；
Solenoid directional control valve 10 is flowed to for control system pressure oil, realizes two-stage system pressure setting.The effect of check valve 11 is anti-
Only pressure oil flows back, the pressurize for system under the shutdown situation of motor pump group 9.
The structure of underframe 15 is the installation form for simulating accumulator 4 on vehicle, while the through hole for passing through its bottom plate
It is whole on the platform of hydraulic power unit.Depression bar support 17 is connected by screw with underframe 15, the bottom end of depression bar 18
Portion is connected by bearing pin with the formation of depression bar support 17, and depression bar 18 is further through bearing pin and the braking mandril of dynamic braking valve 7, the company of being formed
Connect.By operating depression bar 18, brake pedal operating mode is stepped in simulation on vehicle, and the braking mandril of propulsion power brake valve 7 realizes system
Start building condition；Because the lever ratio of depression bar 18 reaches 7.26, manpower can light steering maneuver brake valve 7 braking maneuver.
Fuel reserve tank 20 is designed to body structure, and purge cock is arranged at bottom.During actual tests, such as braking steel pipe 29 is connected
Oil leak situation occurs for the brake cylinder of position or running brake 14, and the fluid of leakage can be flowed directly into fuel reserve tank 20, real
Now reclaim, anti-oil pollution.In addition, fuel reserve tank 20 installs the installation branch of running brake 14 and brake hub 21 for supporting simultaneously
Frame 22, described running brake 14 simulates vehicle actual assembled mode with brake hub 21, is made driving by braking steel pipe 29
The brake cylinder of dynamic device 14 exports Br mouthfuls with the braking of dynamic braking valve 7 and is connected, and realizes braking function, auxiliary detection dynamic braking
The pressure of valve 7 is set up and leakage situation.
The specific detection process of this detection means is as follows：
（1）According to detection needs, subject dynamic braking valve 7, accumulator 4, running brake 14 are installed；
（2）Connect dynamic braking valve 7 and the fluid pressure line between accumulator 4, running brake 14；
（3）Motor pump group 9 is opened, now the attonity of solenoid directional control valve 10, hydraulic oil directly passes through the middle position of solenoid directional control valve 10
Flow back to hydraulic oil container;
（4）Start solenoid directional control valve 10, now hydraulic oil is by by the working position of solenoid directional control valve 10, successively through check valve 11,
Four-way valve 13, into the P mouths of dynamic braking valve 7, is then flowed back in hydraulic oil container 1 by its N mouthfuls；
（5）Continuous braking maneuver is implemented by depression bar 18, hydraulic oil will be successively through check valve 11, four-way valve 13, from accumulator 4
P mouthfuls enter accumulator 4 and carry out pressurising, by observing first pressure table 6, make its pressurising to designated value；Hydraulic oil enters to enter a profession simultaneously
Braked in car brake 14；It can check accordingly at accumulator 4, dynamic braking valve 7 and each hydraulic pipeline joint of system
Have oil-free leakage situation, if any should fastening in time processing, braking maneuver is repeated after processing, by observing first pressure table
6, arrive accumulator 4 and specify pressurising value；
（6）After motor pump group 9 is stopped, by depression bar 18 implement hydraulic oil in continuous braking maneuver, accumulator 4 pass through it is dynamic
Dynamic braking valve 7 enters to be braked in running brake 14；The accumulator pressure drop feelings of 4 one minutes are observed by first pressure table 6
Condition, is contrasted with setting value, judges that dynamic braking valve 7 leaks with the presence or absence of substantially interior, the voltage drop value of such as 1 minute is less than setting
Value, then illustrate dynamic braking valve 7 without obvious internal leakage, on the contrary then unqualified；Pressurize 10 minutes, observe the numerical value of pressure drop again,
It is compared with setting value, such as total pressure drop values are less than the setting value of pressure drop in 10 minutes, judges the totality of dynamic braking valve 7
Internal leakage is up to standard, otherwise judges that dynamic braking valve 7 is unqualified；
（7）The overall internal leakage of such as dynamic braking valve 7 is up to standard, then opens motor pump group 9, and braking maneuver is implemented using depression bar 18, will
The pressurising of accumulator 4 is to designated value；Motor pump group 9 is then shut off, braking maneuver is implemented using depression bar 18, it is continuous to brake five times, lead to
The observation pressure release numerical value of first pressure table 6 is crossed, is contrasted with setting value, such as 5 pressure drop values are all in the qualified of setting
In the range of value, then judge that accumulator 4 is qualified, otherwise judge that accumulator 4 is unqualified；
（8）In braking procedure, by the peep hole on the surface of brake hub 21, the internal actions of running brake 14 are observed, driving is checked
Whether brake 14 has whether clamping stagnation, brake cylinder have the failures such as leakage；
（9）After the completion of detection, dismounting implements entrucking by test specimen.
Above example is not limited only to protection scope of the present invention, all basic thoughts based on the present invention and repaiied
Change or change belong to protection scope of the present invention.
Claims (9)
1. a kind of device for detecting performance of fork truck energy storing brake system, including oil supply system（27）With dynamic braking valve to be measured
（7）, the dynamic braking valve（7）Pass through fluid pressure line and accumulator respectively（4）, running brake（14）Connection；Its feature exists
In：The oil supply system（27）The port of export pass through four-way valve（13）Respectively with dynamic braking valve（7）, accumulator（4）, second pressure
Power table（12）Connection, the accumulator（4）It is provided with the first pressure table for being used for detecting accumulator internal pressure（6）；It is described dynamic
Dynamic braking valve（7）Braking mandril pass through bearing pin and depression bar（18）Connection, by operating depression bar（18）Propulsion power brake valve（7）
Braking mandril realize braking maneuver；The running brake（14）Installed in brake hub（21）On.
2. a kind of device for detecting performance of fork truck energy storing brake system according to claim 1, it is characterised in that：It is described
Accumulator（4）It is provided with pressure alarm（5）.
3. a kind of device for detecting performance of fork truck energy storing brake system according to claim 1, it is characterised in that：It is described
Oil supply system（27）Including hydraulic oil container（1）With motor pump group（9）, the motor pump group（9）Oil outlet end pass sequentially through electromagnetism
Reversal valve（10）, check valve（11）With described four-way valve（13）Oil inlet connection, the check valve（11）Oil inlet end lead to
Cross safety valve（3）With hydraulic oil container（1）Connection；The hydraulic oil container（1）With motor pump group（9）Between be provided with oil adsorption filter
（8）, safety valve（3）With hydraulic oil container（1）Between be provided with oil return cleaner（2）.
4. a kind of device for detecting performance of fork truck energy storing brake system according to claim 1, it is characterised in that：It is described
Accumulator（4）Installed in underframe（15）On, the dynamic braking valve（7）Pass through brake valve mounting bracket（16）It is installed in underframe（15）
On；The underframe（15）On be installed with depression bar support（17）, the depression bar（18）Bottom depression bar support is connected to by bearing pin
（17）On.
5. a kind of device for detecting performance of fork truck energy storing brake system according to claim 4, it is characterised in that：It is described
Depression bar（18）Top be arranged with sheath（19）.
6. a kind of device for detecting performance of fork truck energy storing brake system according to claim 1, it is characterised in that：It is described
Running brake（14）Pass through mounting bracket（22）It is installed with fuel reserve tank（20）Top, the running brake（14）With braking
Drum（21）Between pass through splined shaft（26）Connection, the splined shaft（26）End pass through locking nut（25）With being connected to braking
Drum（21）On method orchid between cover（23）It is locked.
7. a kind of device for detecting performance of fork truck energy storing brake system according to claim 6, it is characterised in that：It is described
Locking nut（25）Outer wall be symmetrically threaded with transmission rod（24）；The brake drum（21）Upper axial direction is offered for seeing
Examine running brake（14）Peep hole.
8. a kind of device for detecting performance of fork truck energy storing brake system according to claim 6, it is characterised in that：It is described
Fuel reserve tank（20）Top offer oil inlet, bottom is provided with purge cock.
9. a kind of device for detecting performance of fork truck energy storing brake system according to claim 1, it is characterised in that：It is described
Dynamic braking valve（7）With accumulator（4）Between be by high-pressure rubber pipe（28）Connection, brake valve（7）With running brake（14）
Brake cylinder between be by braking steel pipe（29）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419272.9A CN107063717B (en) | 2017-06-06 | 2017-06-06 | Performance detection device of forklift energy storage braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419272.9A CN107063717B (en) | 2017-06-06 | 2017-06-06 | Performance detection device of forklift energy storage braking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107063717A true CN107063717A (en) | 2017-08-18 |
| CN107063717B CN107063717B (en) | 2023-08-04 |
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ID=59616539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710419272.9A Active CN107063717B (en) | 2017-06-06 | 2017-06-06 | Performance detection device of forklift energy storage braking system |
Country Status (1)
| Country | Link |
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| CN (1) | CN107063717B (en) |
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| CN107941501A (en) * | 2017-12-25 | 2018-04-20 | 芜湖盛力科技股份有限公司 | A kind of accumulator charging valve reliability test system and method |
| CN115266137A (en) * | 2022-07-28 | 2022-11-01 | 中国第一汽车股份有限公司 | Test system and test method applied to integrated brake system |
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| CN107941501A (en) * | 2017-12-25 | 2018-04-20 | 芜湖盛力科技股份有限公司 | A kind of accumulator charging valve reliability test system and method |
| CN107941501B (en) * | 2017-12-25 | 2024-04-09 | 芜湖盛力科技股份有限公司 | Reliability test system and method for accumulator charge valve |
| CN115266137A (en) * | 2022-07-28 | 2022-11-01 | 中国第一汽车股份有限公司 | Test system and test method applied to integrated brake system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107063717B (en) | 2023-08-04 |
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