CN203534896U - Cam quantitative repeated loading device - Google Patents
Cam quantitative repeated loading device Download PDFInfo
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- CN203534896U CN203534896U CN201320639913.9U CN201320639913U CN203534896U CN 203534896 U CN203534896 U CN 203534896U CN 201320639913 U CN201320639913 U CN 201320639913U CN 203534896 U CN203534896 U CN 203534896U
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- cam
- concrete sample
- quantitative
- loading
- spring
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Abstract
The utility model discloses a cam quantitative repeated loading device. The cam quantitative repeated loading device comprises a base, wherein the base is provided with a test mold; the test mold is internally provided with springs for supporting a concrete test element vertically; a cam for loading the concrete test element is arranged above the concrete test element and is connected with a speed reducer; the speed reducer is connected with an electromotor. According to the utility model, power is supplied for the cam by the electromotor; the cam can be used for loading the concrete test element so as to perform fatigue test. The cam quantitative repeated loading device provided by the utility model is reasonable in design, simple in structure, convenient to install and configure, and convenient and rapid to operate; the cam drive frequency is changed, and the loading frequency is controlled by regulating the reduction gear ratio, so that quantitative repeated loading can be carried out on the concrete test element well; the problems in the prior art that servo electro-hydraulic control is adopted for the repeated loading device and the loading frequency can only be controlled with a very small range are solved.
Description
Technical field
The utility model relates to and a kind of cement concrete test specimen is quantitatively repeated to loading fatigue test device, is specifically related to a kind of cam and quantitatively repeats charger.
Background technology
The device major part that now concrete is repeated to load is to control with servo electrohydraulic, due to the hysteresis quality of fluid, and incompressibility, cause the frequency loading can only be controlled in very little scope, and the heaviness that loads instrument causes expensive, and economic performance is greatly affected; In practical operation, need to make the evaluation to concrete performance for the loading force of specific size.So be necessary to provide a kind of device to the adjustable loading of concrete sample loading frequency.
Utility model content
The utility model object is to overcome the shortcoming of above-mentioned technology, provides a kind of cam quantitatively to repeat charger, and frequency that can controlled loading is carried out quantitative repeating to concrete sample and loaded, thereby carries out torture test.
For achieving the above object, the utility model adopts following technical scheme:
The utility model comprises base, on described base, die trial is set, in die trial, be vertically provided for supporting the spring of concrete sample, support the cam that concrete sample top is provided for concrete sample to load, cam is connected with the output shaft of speed reduction unit, and the input shaft of speed reduction unit is connected with motor.
Between described base and concrete sample, be provided for testing the elasticity scale of cam to loading force, elasticity scale is fixed in die trial.
Described elasticity scale and spring be arranged in parallel.
Described spring top is provided for supporting the flange of concrete sample.
Two double-screw bolts are vertically set in described die trial; Spring is 2, and is all sleeved on double-screw bolt.
Described cam is connected with the output shaft of speed reduction unit by spline.
With respect to prior art, the beneficial effect the utlity model has: the utility model provides power by motor is set to cam, cam can load concrete sample, thereby carry out torture test, the utility model is reasonable in design, simple in structure, install and lay convenient and simple operation, by regulating the reduction gear ratio of speed reduction unit, change the frequency that cam rotates, the frequency of controlled loading, can be good at that concrete sample is carried out to quantitative repeating loads, overcome and in prior art, repeated charger and adopt servo electrohydraulic to control, loading frequency can only be controlled at the problem in very little scope.
Further, owing to being provided with elasticity scale, cam can be read by elasticity scale the loading force of concrete sample, and cam can be read by elasticity scale equally in the displacement of vertical direction.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the connection diagram of motor of the present utility model, speed reduction unit and cam;
Wherein, 1 is cam, and 2 is die trial, and 3 is elasticity scale, and 4 is base, and 5 is spring, and 6 is double-screw bolt, and 7 is flange, and 8 is concrete sample, and 9 is speed reduction unit, and 10 is motor.
Embodiment
Below in conjunction with accompanying drawing explanation, the utility model is elaborated.
Referring to Fig. 1 and 2, the utility model comprises base 4, on described base 4, die trial 2 is set, and interior upper two double-screw bolts 6 that vertically arrange of die trial 2, fix a spring 5 on each double-screw bolt 6, the displacement about double-screw bolt 6 does not produce spring 5, the stability of assurance device.The top of spring 5 arranges flange 7, concrete sample to be detected 8 is set on flange 7,7 pairs of concrete samples 8 of flange play support, concrete sample 8 tops are provided for the cam 1 that concrete sample 8 is loaded, cam 1 is by spline joint on the output shaft of speed reduction unit 9, and the input shaft of speed reduction unit 9 is connected with motor 10; Between base 4 and concrete sample 8, arrange parallel with spring 5 for testing the elasticity scale 3 of cam to concrete sample 8 loading forces.
The manufacturing process of elasticity scale 3 of the present utility model is as follows: need the spring A with certain stiffness factor, the stiffness factor of the utility model medi-spring A is 0.5KN/cm, stiffness factor after spring A parallel connection is 1KN/cm, according to recklessly can law F=Kx, x is the deflection of spring A, thereby obtains the sizes values of the power that each scale is corresponding, such as 1cm corresponding be 1KN, position is marked on elasticity scale 3 left sides, obtains thus readings all on scale.Reading on scale is the size of cam 1 displacement and loading force.Elasticity scale 3 is fixed in die trial 2, and elasticity scale 3 tops flush with the lowermost end of concrete sample 8; The range of the test loading force of elasticity scale 3 is 16KN.
During the utility model work, motor 10 drives speed reduction unit 9 to rotate, produce certain rotating speed, speed reduction unit 9 changes the rotating speed of motor 10 and is with moving cam 1 to rotate, and cam 1 is connected with concrete sample 8 below, and concrete sample 8 is arranged in die trial 2, concrete sample 8 belows are withstood by the spring 5 of 2 flanged 7, spring 5 is fastened in the double-screw bolt 6 of base 4, make spring 5 do not produce left and right displacement, the stability of assurance device; In the fixing speed reduction unit 9 of cam 1, make to produce the movement of vertical direction, and the movement that does not produce other directions, cam 1 can read out by elasticity scale 3 in the size of the displacement of vertical direction, and the size of loading force also can read out by elasticity scale 3.
Compared with prior art, the utility model can, by regulating the reduction gear ratio of speed reduction unit, change the frequency that cam rotates, frequency that can controlled loading, carries out quantitative repeating to concrete sample and loads, thereby carry out torture test, and simple structure is directly perceived, be easy to realize.
Claims (6)
1. a cam quantitatively repeats charger, it is characterized in that, comprise base (4), die trial (2) is set on described base (4), in die trial (2), be vertically provided for supporting the spring (5) of concrete sample (8), support concrete sample (8) top and be provided for the cam (1) that concrete sample (8) is loaded, cam (1) is connected with the output shaft of speed reduction unit (8), and the input shaft of speed reduction unit (8) is connected with motor (10).
2. cam according to claim 1 quantitatively repeats charger, it is characterized in that, between described base (4) and concrete sample (8), be provided for testing cam (1) to the elasticity scale (3) to concrete sample (8) loading force, elasticity scale (3) is fixed in die trial (2).
3. cam according to claim 2 quantitatively repeats charger, it is characterized in that, described elasticity scale (3) and spring (5) be arranged in parallel.
4. cam according to claim 1 quantitatively repeats charger, it is characterized in that, described spring (5) top is provided for supporting the flange (7) of concrete sample (8).
5. cam according to claim 1 quantitatively repeats charger, it is characterized in that, two double-screw bolts (6) are vertically set in described die trial (2); Spring (5) is 2, and is all sleeved on double-screw bolt (6).
6. cam according to claim 1 quantitatively repeats charger, it is characterized in that, described cam (1) is connected with the output shaft of speed reduction unit (9) by spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320639913.9U CN203534896U (en) | 2013-10-16 | 2013-10-16 | Cam quantitative repeated loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320639913.9U CN203534896U (en) | 2013-10-16 | 2013-10-16 | Cam quantitative repeated loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203534896U true CN203534896U (en) | 2014-04-09 |
Family
ID=50421091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320639913.9U Expired - Fee Related CN203534896U (en) | 2013-10-16 | 2013-10-16 | Cam quantitative repeated loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203534896U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528883A (en) * | 2013-10-16 | 2014-01-22 | 长安大学 | Cam quantitative repeated loading device |
| CN108088670A (en) * | 2017-11-29 | 2018-05-29 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of low load fatigue test system of aircraft installation system |
| CN110231226A (en) * | 2019-05-21 | 2019-09-13 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of dynamic compressive test method of rubber seal under electric field action |
-
2013
- 2013-10-16 CN CN201320639913.9U patent/CN203534896U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528883A (en) * | 2013-10-16 | 2014-01-22 | 长安大学 | Cam quantitative repeated loading device |
| CN108088670A (en) * | 2017-11-29 | 2018-05-29 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of low load fatigue test system of aircraft installation system |
| CN110231226A (en) * | 2019-05-21 | 2019-09-13 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of dynamic compressive test method of rubber seal under electric field action |
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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: 20140409 Termination date: 20151016 |
|
| EXPY | Termination of patent right or utility model |