CN203249762U - Small load fatigue test precise loading device - Google Patents
Small load fatigue test precise loading device Download PDFInfo
- Publication number
- CN203249762U CN203249762U CN 201320223623 CN201320223623U CN203249762U CN 203249762 U CN203249762 U CN 203249762U CN 201320223623 CN201320223623 CN 201320223623 CN 201320223623 U CN201320223623 U CN 201320223623U CN 203249762 U CN203249762 U CN 203249762U
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- spring
- pressurized strut
- test
- base
- small load
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Abstract
The utility model belongs to the technical field of an aviation fatigue test and particularly relates to a small load fatigue test precise loading device. The device comprises a base which is provided with a bracket which is equipped with an actuating cylinder (1). The actuating cylinder (1) is connected with a force sensor (3) through a spring (2). The force sensor (3) is connected with a steel rope (4) which is wound around a pulley (5) to be connected with a test piece. According to the device, the hydraulic actuating cylinder, the spring and the force sensor are arranged reasonably, the characteristic of the spring and the stroke of the actuating cylinder are effectively matched, the accurate loading of a small load is realized, and a test frequency reaches 1.5HZ at the same time.
Description
Technical field
The utility model belongs to aviation torture test technical field, particularly relates to the accurate charger of a kind of little load torture test.
Background technology
Little load torture test in industry is a difficult problem, if the load number of transitions is many, load the realization difficulty with weight, and easy the generation is impacted.If adopt pressurized strut, sensor directly to load, because testpieces is under the effect of little load, displacement is very little, so the stroke of pressurized strut is just very little, general hydraulicdirectional control valve is difficult to realize.The mode that adopted in the past spring, hydraulic actuator to load, but the method is taked displacement control, and spring is demarcated difficulty.The variation of its performance can be caused simultaneously along with the use of spring, demarcation will be re-started so a period of time is carried out in test.By the characteristic decision of spring, can't omnidistance control fully by loading accuracy for the precision that loads.
Summary of the invention
Goal of the invention: provide a kind of little load torture test accurate charger, the characteristic of spring and the stroke of pressurized strut are effectively mated, realize that little load accurately loads, and improves test frequency simultaneously.
Technical scheme: the accurate charger of a kind of little load torture test, comprise a base, be provided with support on the base, pressurized strut 1 is installed on the support, pressurized strut is connected with power sensor 3 by spring 2, and power sensor 3 connects a cable wire 4, walks around pulley 5 and is connected with testpieces.
Described pressurized strut 1 is hydraulic actuator.
Be provided with the back-up block for installation test part 6 on the described base.
Described pulley 5 is installed on the fixed support of base.
Beneficial effect: the utility model carries out reasonable Arrangement with hydraulic actuator, spring, power sensor, and the characteristic of spring and the stroke of pressurized strut are effectively mated, and has realized the accurate loading of little load, and test frequency reaches 1.5HZ simultaneously.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done to describe in further detail, seen also Fig. 1.
The accurate charger of a kind of little load torture test comprises a base, is provided with support on the base, and pressurized strut 1 is installed on the support, and pressurized strut is connected with power sensor 3 by spring 2, and power sensor 3 connects a cable wire 4, walks around pulley 5 and is connected with testpieces.
Described pressurized strut 1 is hydraulic actuator.
Be provided with the back-up block for installation test part 6 on the described base.
Described pulley 5 is installed on the fixed support of base.
The utility model adopts the mode of pressurized strut 1, spring 2, power sensor 3, and this loading is power prosecutor formula, has just increased the stroke of pressurized strut 1 with spring 2, makes control convenient and easy.This mode can not affect because of the change of spring 2 characteristics the precision of loading, a loading accuracy force sensor impact.As long as the characteristic of spring 2 and the stroke of pressurized strut 1 are effectively mated, just can realize that little load accurately loads, and improves test frequency simultaneously.Following principle is followed in selection at pressurized strut 1 and spring 2:
1) if the tonnage of pressurized strut 1 is large, can select the large spring of spring rate, the stroke of pressurized strut 1 can not increase too much like this, can satisfy again the requirement of test, test frequency can be improved simultaneously.If select the little spring of spring rate, the stroke of pressurized strut 1 can be very large, can increase hydraulic flow, and is unfavorable to improving test frequency.
2) if the tonnage of pressurized strut 1 is little, can select the little spring of spring rate, the stroke increase of pressurized strut is very large like this, has strengthened hydraulic flow, makes control easily, and test frequency can be very high.If at this moment select the large spring of spring rate, test can't be carried out.
Test is with the pressurized strut at right angle setting of will trying one's best, like this spring 2, power sensor 3, pressurized strut 1 install very convenient.If testpieces can't load in the vertical direction, can lead with pulley 5.
During use, at first according to magnitude of load deterministic force sensor 3, measure again the deflection of spring 2 under maximum load, select corresponding hydraulic actuator 1 by deflection.Then set test frequency, after testpieces is fixedly connected with, open oil circuit, the control hydraulic actuator is started working.
Claims (4)
1. one kind little accurate charger of load torture test, it is characterized in that, comprise a base, be provided with support on the base, pressurized strut (1) is installed on the support, pressurized strut is connected with power sensor (3) by spring (2), and power sensor (3) connects a cable wire (4), walks around pulley (5) and is connected with testpieces.
2. the accurate charger of a kind of little load torture test according to claim 1 is characterized in that, described pressurized strut (1) is hydraulic actuator.
3. the accurate charger of a kind of little load torture test according to claim 1 is characterized in that, is provided with the back-up block for installation test part (6) on the described base.
4. the accurate charger of a kind of little load torture test according to claim 1 is characterized in that, described pulley (5) is installed on the fixed support of base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320223623 CN203249762U (en) | 2013-04-27 | 2013-04-27 | Small load fatigue test precise loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320223623 CN203249762U (en) | 2013-04-27 | 2013-04-27 | Small load fatigue test precise loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203249762U true CN203249762U (en) | 2013-10-23 |
Family
ID=49376195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320223623 Expired - Fee Related CN203249762U (en) | 2013-04-27 | 2013-04-27 | Small load fatigue test precise loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203249762U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738085A (en) * | 2014-12-10 | 2016-07-06 | 中国飞机强度研究所 | Load applying method suitable for special installation space |
| CN106568558A (en) * | 2016-11-02 | 2017-04-19 | 北京强度环境研究所 | Mini load applying system of large-scale hydraulic loading device |
| CN112161883A (en) * | 2020-09-18 | 2021-01-01 | 成都国营锦江机器厂 | Helicopter tail rotor control steel cable fatigue test platform |
| CN112484972A (en) * | 2020-10-30 | 2021-03-12 | 哈尔滨飞机工业集团有限责任公司 | Asymmetric load buffer and parameter determination method |
-
2013
- 2013-04-27 CN CN 201320223623 patent/CN203249762U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738085A (en) * | 2014-12-10 | 2016-07-06 | 中国飞机强度研究所 | Load applying method suitable for special installation space |
| CN106568558A (en) * | 2016-11-02 | 2017-04-19 | 北京强度环境研究所 | Mini load applying system of large-scale hydraulic loading device |
| CN112161883A (en) * | 2020-09-18 | 2021-01-01 | 成都国营锦江机器厂 | Helicopter tail rotor control steel cable fatigue test platform |
| CN112161883B (en) * | 2020-09-18 | 2024-01-16 | 成都国营锦江机器厂 | Helicopter tail rotor control steel cable fatigue test platform |
| CN112484972A (en) * | 2020-10-30 | 2021-03-12 | 哈尔滨飞机工业集团有限责任公司 | Asymmetric load buffer and parameter determination method |
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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: 20131023 Termination date: 20160427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |