CN2345975Y - Hydraulic testing machine with automatic loading device - Google Patents
Hydraulic testing machine with automatic loading device Download PDFInfo
- Publication number
- CN2345975Y CN2345975Y CN 98216473 CN98216473U CN2345975Y CN 2345975 Y CN2345975 Y CN 2345975Y CN 98216473 CN98216473 CN 98216473 CN 98216473 U CN98216473 U CN 98216473U CN 2345975 Y CN2345975 Y CN 2345975Y
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- CN
- China
- Prior art keywords
- testing machine
- hydraulic
- automatic loading
- gear
- automatic
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000011068 loading method Methods 0.000 title claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 239000000446 fuel Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000010297 mechanical methods and process Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- Testing Of Engines (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model relates to a hydraulic testing machine with an automatic loading device. A couple of gear pairs are connected to a hand wheel shaft of an oil sending valve of the original hydraulic testing machine with controlled by hand by a mechanical method, a stepping motor is used for control to achieve the conversion of the manual control and the automatic control of the hydraulic testing machine, and accordingly, the function of the automatic loading of the hydraulic testing machine is realized. The utility model is composed of a couple of gear drive pairs and a stepping motor (or other electric motors), and an oil return path of the original testing machine is also matched with a sensor, an electromagnetic reversing valve and a manual stop valve to perform the functions of automatic force measurement, automatic unloading and the isolation of a force measuring oil circuit of the original testing machine. The utility model has the advantages of simple structure, reliable performance, convenient installing and low cost.
Description
The utility model relates to a kind of hydraulic dynamometer with hydraulic dynamometer, particularly a kind of automatic loading automatic loading system, improved, comprises hydraulic pressure testing machine and universal hydraulic testing machine.
Existing patent ZL95212652.4 is on the basis of original manual control testing machine, electro-hydraulic proportional valve is attempted by on the hand control valve, adopt the method for throttling in parallel, formed on the hydraulic pressure and be called: the structure of single loop dual system, realize manually control and the conversion of control automatically.Make the manual control that has changed former testing machine like this and send oil return line, with making the adjustment of system time-consuming, stability, the reliability to this system can be under some influence simultaneously, and the workload of hydraulic pressure is bigger, cost is higher.
The purpose of this utility model: it is constant to provide the manual control loop of the former hydraulic pressure testing machine of a kind of maintenance, and only increase a pair of gear pair or other corresponding mechanical type transmission is paid sending on the hand wheel shaft of fuel tap, adopt stepper motor or other corresponding direct motor drive control, reach and press testing machine manually control and the conversion of control automatically this night, thereby realized the automatic loading function of hydraulic dynamometer.The utility model advantage compared with prior art is: the first, keep former hydraulic pressure testing machine hydraulic control system to send the fuel tap oil circuit complete constant, guaranteed stability, the reliability of original system: the second, simple in structure, cost is low, as adopt stepper motor, then cost can reduce about 40-50%.
Accompanying drawing 1 is an outside drawing of the present utility model.
Accompanying drawing 2 is an embodiment synoptic diagram of the present utility model.
Below in conjunction with accompanying drawing the utility model being done one describes in detail.
As shown in Figure 1, the utility model is by operating cylinder (1), and hydraulic system (2), computing machine (3), controller (4) and scale load indication (5) are formed.
As shown in Figure 2, the hydraulic oil in the fuel tank (21) is transformed to hydraulic oil through oil pump (22), to sending fuel tap (6).At this moment after closing oil return valve (18), the method for two kinds of loadings is arranged: a kind of method is a manual loading, promptly by operator's hand, opens and send fuel tap (6), makes pressure oil enter oil cylinder, makes system works; Another kind method is automatic control loaded, i.e. the loading method that provides of this patent.Automatically control loaded is achieved in that by computing machine (3) and sends instruction, allow the stepper motor (10) in the controller (4) rotate, thereby the gear (9) that is contained on the step motor shaft (11) is rotated, driving the gear (8) that is contained on the hand wheel shaft (7) again rotates, reached rotation hand wheel shaft (7) at last and promptly opened and send fuel tap, made the purpose of system works.The loading speed of testing machine, be decided by to send fuel tap change up, change down and open big, open for a short time, therefore, the loading velocity of testing machine has been realized control by computing machine (3) fully.In addition, be installed on the scavenge pipe (13), by the pressure transducer (15) on the valve plate (14) of threeway (19) connection, by computing machine (3) real-time sampling, show test scale load power value, and as requested, by stepper motor (10), FEEDBACK CONTROL send changing up, changing down of fuel tap and open open greatly little.When sample damaged by pressure or breaks, the solenoid directional control valve (16) that computing machine sends on the instruction control valve plate (14) unloaded automatically, and the pressure oil in the oil cylinder (1) is through oil pipe (20) oil return pond (21).Stop valve (23) is when opening, pressure oil in the oil cylinder (1) enters the dynamometry oil cylinder, pointer in the scale load indication (5) is just indicated the power value, if close stop valve (23), then the pressure oil in the oil cylinder (1) can't enter the dynamometry oil cylinder, and the pointer in the scale load indication (5) is just slack (dynamometry oil cylinder part is not drawn among the figure).Test findings all can be by Computer Storage or printout.
Claims (4)
1, a kind of hydraulic dynamometer with automatic loading system, comprise operating cylinder (1), hydraulic system (2), computing machine (3), controller (4), and scale load indication (5), it is characterized in that: controller (4) is by intermeshing transmission gear (8), (9), stepper motor (10) and control panel (12) are formed, gear (8) is installed on the hand wheel shaft (7) that testing machine send fuel tap (6), gear (9) is installed on the axle (11) of stepper motor (10), control panel (12) links with stepper motor (10) and computing machine (3), the scavenge pipe (13) of testing machine hydraulic system (2) connects valve plate (14) by threeway (19), and valve plate (14) links to each other with pressure transducer (15) and solenoid directional control valve (16).
2, according to claims 1 described a kind of hydraulic dynamometer with automatic loading system, it is characterized in that: transmission gear (8) and gear (9) can be the pair of straight gear pairs, also can be that other transmissions such as friction pulley are paid.
3, according to claims 1,2 described a kind of hydraulic dynamometers with automatic loading system, it is characterized in that: pressure transducer (15) links to each other with computing machine (3) by A/D conversion (17).
4, according to claims 1,2 and 3 described a kind of hydraulic dynamometers with automatic loading system, it is characterized in that: solenoid directional control valve (16) links to each other with computing machine (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98216473 CN2345975Y (en) | 1998-08-10 | 1998-08-10 | Hydraulic testing machine with automatic loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98216473 CN2345975Y (en) | 1998-08-10 | 1998-08-10 | Hydraulic testing machine with automatic loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2345975Y true CN2345975Y (en) | 1999-10-27 |
Family
ID=33969411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98216473 Expired - Fee Related CN2345975Y (en) | 1998-08-10 | 1998-08-10 | Hydraulic testing machine with automatic loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2345975Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006972A (en) * | 2014-05-07 | 2014-08-27 | 江苏大学 | Electric vehicle regenerative brake test loading mechanism and method |
-
1998
- 1998-08-10 CN CN 98216473 patent/CN2345975Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006972A (en) * | 2014-05-07 | 2014-08-27 | 江苏大学 | Electric vehicle regenerative brake test loading mechanism and method |
| CN104006972B (en) * | 2014-05-07 | 2017-11-17 | 江苏大学 | A kind of electric automobile regenerative braking experiment load maintainer and loading method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |