CN104236894A - Vehicle-mounted test device for detecting reliability of forklift pedal mechanism - Google Patents
Vehicle-mounted test device for detecting reliability of forklift pedal mechanism Download PDFInfo
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- CN104236894A CN104236894A CN201410532027.5A CN201410532027A CN104236894A CN 104236894 A CN104236894 A CN 104236894A CN 201410532027 A CN201410532027 A CN 201410532027A CN 104236894 A CN104236894 A CN 104236894A
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Abstract
The invention provides a vehicle-mounted test device for detecting reliability of a forklift pedal mechanism. The vehicle-mounted test device comprises a support, a force application mechanism is connected at the top end of the support and comprises an air cylinder support movably connected at the top end of the support, an executing air cylinder is fixedly arranged on the air cylinder support, an induction magnetic ring is arranged in the executing air cylinder, two limit electromagnetic switches are arranged outside the executing air cylinder, an end of a piston rod of the executing air cylinder is connected with a spindle of a wheel, the wheel is arranged in a groove in a rail plate and rolls in the same, a rod cavity and a rodless cavity of the executing air cylinder are connected with two air outlets of an electromagnetic reversing valve respectively through air pipes, and the limit electromagnetic switches are connected with the controller respectively through cables. The vehicle-mounted test device is detachable and is mounted on the forklift pedal mechanism for detecting, so that the pedal mechanism is tested under the condition closest to the actuality, detecting accuracy is improved and reliability of a forklift brake system is guaranteed.
Description
Technical field
The present invention relates to a kind of test unit, being specifically related to a kind of track test device for detecting forklift pedal mechanism reliability.
Background technology
Brake system of forklift mainly through brake treadle mechanism by Braking in master cylinder, make it export to produce the liquid stream with certain pressure finally to reach brake cylinder brake cylinder by the road to produce thrust and opened to both sides by shoe brake, shoe plate is close to brake hub and is just produced damping force.Because brake system is related to traffic safety, so need to detect brake system.
Be not directed to the testing standard of pedal system test in current Forklift Industry, can only test with reference to " auto pedal device performance requires and Bench test methods " as this type of test will be carried out.But bench test not only needs large cost processing experiment stand, and bench test can not reflect the stressing conditions of pedal system on car load really.The fail-test being directed to pedal gear at present is also confined to testing table, although carry out test to have and be convenient to observe, change exemplar feature easily on testing table, itself also have can not simulate applying working condition completely, difficulty is installed by cum rights, cost crosses high drawback.
Summary of the invention
The present invention is in order to solve the problems of the technologies described above, a kind of track test device for detecting forklift pedal mechanism reliability is provided, the vehicle body making this test unit can be directly installed on fork truck is tested brake pedal and relevant clutch pedal, pedal gear is tested under closest to the true service condition used, thus improve the accuracy detected, ensure the reliability of brake system of forklift.
Technical scheme of the present invention is: a kind of track test device for detecting forklift pedal mechanism reliability, comprise support, the top of described support is connected with force application mechanism, described force application mechanism comprises the air cylinder support being movably connected in cantilever tip, described air cylinder support is installed with execution cylinder, the inside of described execution cylinder is provided with reaction magnetic ring, and the outside performing cylinder is provided with two spacing electromagnetic switch; The described piston rod end of execution cylinder is connected with the main shaft of roller, and described roller rolls being located in the groove on track plates; The rod chamber of described execution cylinder is connected with two gas outlets of electromagnetic system reversal valve respectively by tracheae respectively with rodless cavity, and described two spacing electromagnetic switch are connected with controller respectively by cable.
Further, described air cylinder support is locked by fixed head and support.
The bottom of described support is arranged on fork truck hood support; Described force application mechanism has two, and it is connected respectively by track plates with brake pedal, clutch pedal and acts on brake pedal and clutch pedal.
The air intake opening of described electromagnetic system reversal valve is connected with pressurized air by pneumatic three elements.
Described controller is the PLC with digital display screen.
Described air cylinder support is movably connected in the top of support by connecting pin.
Track test device of the present invention is furnished with two and performs cylinder, and its piston rod acts on brake pedal and clutch pedal respectively by roller, applies acting force and promote each pedal to rotate around himself stationary shaft to two pedals.During installation, be first by support installing on fork truck hood support, again the track plates rolled with roller contact is separately fixed on brake pedal and clutch pedal, drive roller to move when performing Telescopic-cylinder motion, make the position of roller in track plates in groove and realize the applying power of brake pedal and clutch pedal or remove power.
In the present invention, dynamic three elements are standard component can play filtration, lubrication, pressure regulation and voltage stabilizing effects to pressurized air.Two the spacing electromagnetic switch performing cylinder outside can be located at the optional position performing cylinder, and change, and so just can control the stroke performing cylinder arbitrarily, thus reach the testing requirements of applicable fork truck brake pedal and clutch pedal.
Pressurized air enters solenoid directional control valve through pneumatic three elements, then enters through two gas outlets of solenoid directional control valve respectively and perform in the rod chamber of cylinder, rodless cavity, thus realizes the action that stretching out and shrinking performing cylinder.When the piston rod performing cylinder carries out stretching motion, the reaction magnetic ring of its inside is followed piston and is moved back and forth, and two the spacing electromagnetic switch performing cylinder outside are when sensing that reaction magnetic ring passes through, then can produce an electric signal, this electric signal passes in PLC by cable, PLC will control corresponding solenoid directional control valve after receiving signal and change the selection of compressed-air actuated gas outlet, thus realizes the object to performing cylinder realization conversion action.PLC is with digital display function simultaneously, performs cylinder conversion one-off or complete once to circulate, and digital display function will carry out meter accumulation automatically.PLC control system can also reserve the operation cycle index performing cylinder in advance in advance in addition, then quits work, and record cycle index when performing cylinder and running and reach its cycle index.
So beneficial effect of the present invention has:
1, apparatus structure of the present invention is simple, detachable and easy to operate, namely before detection by support installing on fork truck hood support, then track plates to be separately fixed on brake pedal and clutch pedal; And again it is disassembled from fork truck after having detected;
2, because test unit of the present invention is mounted on fork truck, pedal gear is detected, pedal gear is tested under closest to the true service condition used, thus improves the accuracy detected, ensured the reliability of brake system of forklift.
3, this device can detect the reliability of fork truck brake pedal and clutch pedal simultaneously.
4, because track plates is provided with groove, roller is rolled in groove, the offset deviation produced because each pedal rotates around its stationary shaft can be balanced out like this.
5, because air cylinder support is flexibly connected with support by connecting pin, therefore air cylinder support can rotate freely around connecting pin, thus air cylinder support can be made and perform cylinder to regulate at any angle, it can be made to reach best force application angle to track plates.After completing Deng the angular adjustment of air cylinder support, by fixed head, air cylinder support and support are locked.
6, this device is by regulating the position of spacing electromagnetic switch to regulate the stroke performing cylinder, therefore can according to the model of pedal gear different come Adjustment Tests device long stroke that pedal gear is applied, have easy to adjust, flexible by force, feature that detection accuracy is high.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is track test device scheme of installation of the present invention.
Fig. 2 is electric control theory figure of the present invention.
In figure: 1. fork truck hood support, 2. support, 3. fixed head, 4. connecting pin, 5. air cylinder support, 6. first perform cylinder.7. spacing electromagnetic switch, 8 second perform cylinder., 9 rollers., 10. track plates, 11. brake pedals, 12. clutch pedals, 13-1 first solenoid directional control valve, 13-2 second solenoid directional control valve, pneumatic three elements of 14-, 15-PLC controller.
In Fig. 2, solid line is tracheae, and dotted line is cable.
Embodiment
As shown in Figure 1, a kind of track test device for detecting forklift pedal mechanism reliability, comprise support 2, the top of described support 2 is connected with two force application mechanisms, each force application mechanism includes the air cylinder support 5 being movably connected in support 2 top by connecting pin 4, described air cylinder support 5 is installed with execution cylinder, and described execution cylinder interior is provided with reaction magnetic ring, and the outside performing cylinder is provided with two spacing electromagnetic switch 7; The piston rod end of described execution cylinder is connected with the main shaft of roller 9, and described roller 9 rolls being located in the groove on track plates 10.During installation, first the bottom of support 2 is bolted on fork truck hood support 1, then two track plates 10 are connected to brake pedal 11. on clutch pedal 12.By the position of adjusting cylinders support 5, make the first execution cylinder 6, second perform cylinder 8 and all can reach best force application angle to track plates 10, then by fixed head 3, air cylinder support 5 and support 2 are locked.
As shown in Figure 2, pressurized air is divided into two-way gas circuit after the filtration, pressure regulation of pneumatic three elements 14, one tunnel gas circuit enters in the first solenoid directional control valve 13-1, then enters from two outlet C1, C2 the stretching motion promoting its piston rod the rod chamber of the first execution cylinder 6 and rodless cavity respectively; Another road gas circuit enters in the second solenoid directional control valve 13-2, then enters from two outlet D1, D2 the stretching motion promoting its piston rod the rod chamber of the second execution cylinder 8 and rodless cavity respectively.First spacing electromagnetic switch 7A1, the 7A2 performed on cylinder 6 is connected with PLC 15 respectively by cable, and the second spacing electromagnetic switch 7B1,7B2 performed on cylinder 8 is connected with PLC 15 respectively by cable.
During detection, this device is arranged on fork truck, and after regulating the force application angle performing cylinder also to fix, open pressurized air, pressurized air enters the first execution cylinder 6 and second respectively and performs in cylinder 8 after the filtration, pressure regulation of pneumatic three elements 14 through the first solenoid directional control valve 13-1, the second solenoid directional control valve 13-2, exert a force respectively to brake pedal 11, clutch pedal 12.When the piston rod that first performs cylinder 6 carries out stretching motion, the reaction magnetic ring of its inside is followed piston and is moved back and forth, and first performs two spacing electromagnetic switch 7A1,7A2 of cylinder 6 outside when sensing that reaction magnetic ring passes through, then can produce an electric signal, this electric signal passes in PLC 15 by cable, and PLC 15 will control the first solenoid directional control valve 13-1 after receiving signal and change the selection of compressed-air actuated gas outlet C1, C2, thus realize performing to first the object that cylinder 6 carries out conversion action.PLC is with digital display function simultaneously, and the first execution cylinder 6 converts one-off or completes and once circulates, and digital display function will carry out meter accumulation automatically.PLC control system can also reserve the operation cycle index performing cylinder in advance in advance in addition, then quits work, and record cycle index when performing cylinder and running and reach its cycle index.In like manner, the second principle of work performing cylinder 8 performs cylinder 6. with first
Above embodiment is not limited only to protection scope of the present invention, all modify based on basic thought of the present invention or change all belong to protection scope of the present invention.
Claims (6)
1. one kind for detecting the track test device of forklift pedal mechanism reliability, comprise support (2), it is characterized in that: the top of described support (2) is connected with force application mechanism, described force application mechanism comprises the air cylinder support (5) being movably connected in support (2) top, (5) are installed with execution cylinder to described air cylinder support, the inside of described execution cylinder is provided with reaction magnetic ring, and the outside performing cylinder is provided with two spacing electromagnetic switch (7); The piston rod end of described execution cylinder is connected with the main shaft of roller (9), and described roller (9) rolls being located in the groove on track plates (10); The rod chamber of described execution cylinder is connected with two gas outlets of electromagnetic system reversal valve respectively by tracheae respectively with rodless cavity, and described two spacing electromagnetic switch (7) are connected with controller respectively by cable.
2. track test device according to claim 1, is characterized in that: described air cylinder support (5) is locked by fixed head (3) and support (2).
3. track test device according to claim 1, is characterized in that: the bottom of described support (2) is arranged on fork truck hood support (1); Described force application mechanism has two, and it is connected respectively by track plates (10) with brake pedal (11), clutch pedal (12) and acts on brake pedal (11) and clutch pedal (12).
4. track test device according to claim 1, is characterized in that: the air intake opening of described electromagnetic system reversal valve is connected with pressurized air by pneumatic three elements (14).
5. track test device according to claim 1, is characterized in that: described controller is the PLC with digital display screen.
6. track test device according to claim 1, is characterized in that: described air cylinder support (5) is movably connected in the top of support (2) by connecting pin (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532027.5A CN104236894A (en) | 2014-10-11 | 2014-10-11 | Vehicle-mounted test device for detecting reliability of forklift pedal mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532027.5A CN104236894A (en) | 2014-10-11 | 2014-10-11 | Vehicle-mounted test device for detecting reliability of forklift pedal mechanism |
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| CN104236894A true CN104236894A (en) | 2014-12-24 |
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| CN201410532027.5A Pending CN104236894A (en) | 2014-10-11 | 2014-10-11 | Vehicle-mounted test device for detecting reliability of forklift pedal mechanism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792550A (en) * | 2015-05-07 | 2015-07-22 | 上海理工大学 | Mobile X-ray machine foot brake fatigue test device and test method |
| CN106404415A (en) * | 2016-06-21 | 2017-02-15 | 合肥和安机械制造有限公司 | Fork truck driving brake test bed |
| CN109668719A (en) * | 2018-12-28 | 2019-04-23 | 莱茵技术（上海）有限公司 | A kind of multifunctional testing frame for light industrial goods |
| CN111516717A (en) * | 2020-04-27 | 2020-08-11 | 中车青岛四方机车车辆股份有限公司 | Door clearance compensator, door clearance compensator control system and method and railway vehicle |
| CN111762218A (en) * | 2020-05-29 | 2020-10-13 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle |
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| CN102364318A (en) * | 2011-06-30 | 2012-02-29 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Pedal durability tester |
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| FR2992421A3 (en) * | 2012-06-22 | 2013-12-27 | Renault Sa | Test module for clutch pedal that is utilized for e.g. light vehicle, has control unit that is connected by connection unit, where control unit controls passage of connection unit from active state to idle state |
| CN104062117A (en) * | 2014-07-16 | 2014-09-24 | 上海大众汽车有限公司 | Durability testing device of pedal mechanism |
| CN204116034U (en) * | 2014-10-11 | 2015-01-21 | 安徽合力股份有限公司 | A kind of track test device for detecting forklift pedal mechanism reliability |
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| CN2380701Y (en) * | 1999-04-23 | 2000-05-31 | 跃进汽车集团公司 | Operation device for smoke-testing accelerator pedal of automobile |
| EP2431241A1 (en) * | 2010-09-17 | 2012-03-21 | Kurt Stähle | Actuator device with emergency stop function |
| CN102364318A (en) * | 2011-06-30 | 2012-02-29 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Pedal durability tester |
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| FR2992421A3 (en) * | 2012-06-22 | 2013-12-27 | Renault Sa | Test module for clutch pedal that is utilized for e.g. light vehicle, has control unit that is connected by connection unit, where control unit controls passage of connection unit from active state to idle state |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792550A (en) * | 2015-05-07 | 2015-07-22 | 上海理工大学 | Mobile X-ray machine foot brake fatigue test device and test method |
| CN106404415A (en) * | 2016-06-21 | 2017-02-15 | 合肥和安机械制造有限公司 | Fork truck driving brake test bed |
| CN109668719A (en) * | 2018-12-28 | 2019-04-23 | 莱茵技术（上海）有限公司 | A kind of multifunctional testing frame for light industrial goods |
| CN111516717A (en) * | 2020-04-27 | 2020-08-11 | 中车青岛四方机车车辆股份有限公司 | Door clearance compensator, door clearance compensator control system and method and railway vehicle |
| CN111516717B (en) * | 2020-04-27 | 2021-08-24 | 中车青岛四方机车车辆股份有限公司 | Door clearance compensator, door clearance compensator control system and method and railway vehicle |
| CN111762218A (en) * | 2020-05-29 | 2020-10-13 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle |
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Application publication date: 20141224 |