CN201732038U - Hydraulic fixture for wide-width tensile test of geogrid - Google Patents
Hydraulic fixture for wide-width tensile test of geogrid Download PDFInfo
- Publication number
- CN201732038U CN201732038U CN 201020232862 CN201020232862U CN201732038U CN 201732038 U CN201732038 U CN 201732038U CN 201020232862 CN201020232862 CN 201020232862 CN 201020232862 U CN201020232862 U CN 201020232862U CN 201732038 U CN201732038 U CN 201732038U
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- intermediate plate
- hydraulic
- chuck
- clamping plate
- wide
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Abstract
The utility model provides a hydraulic fixture for wide-width tensile test of geogrid, which consists of a hydraulic pump station, an electrohydraulic servo system and chucks. The hydraulic pump station comprises a hydraulic pump station motor, a hydraulic oil tank, a pressure regulating valve and a hydraulic pressure gauge, the electrohydraulic servo system comprises an electromagnetic valve and an electrohydraulic control box, the chucks include an upper chuck and a lower chunk, oil inlet pipes and oil outlet pipes of the upper and lower chucks are communicated to the hydraulic oil tank, each chuck comprises a chuck screw, a clamp plate A, a clamp plate B, a cross beam, a small cylinder, two clamping plate screws, the cross beam and the clamping plate A are fixed at two ends of each of the two clamping plate screws, two sides of the clamping plate B are sleeved on the clamping plate screws, the small oil cylinder is fixed on the clamping plate B, and the clamping plate B moves along the clamping plate screw under action of hydraulic oil in the small oil cylinder. The fixture is convenient in use as clamping force of the fixture can be adjusted, thereby increasing working efficiency greatly.
Description
Technical field
The present invention relates to the anchor clamps of wide GSZ of a kind of fluid pressure type clamping, be mainly used in wide formula tension test of GSZ.
Background technology
Wide traditional GSZ anchor clamps are generally mechanical, and it is more loaded down with trivial details, time-consuming that mechanical clips uses, and holding force is by manually realizing, tend to occur make the sample slippage or make the phenomenon of sample pinch off because of holding force is excessive because of the holding force deficiency.For fear of above-mentioned phenomenon, make wide GSZ tension test finish smoothly, it is imperative to improve existing anchor clamps.
Summary of the invention
The objective of the invention is to propose wide GSZ anchor clamps of a kind of fluid pressure type, these anchor clamps adopt the mode of hydraulic pressure that clamping power is provided, and the adjustable size of holding force.
Technical scheme of the present invention is: wide GSZ anchor clamps of a kind of fluid pressure type, and its structure is made up of hydraulic power unit, electrohydraulic servo system and chuck three parts; Described hydraulic power unit provides power for anchor clamps, and hydraulic power unit mainly comprises hydraulic power unit motor, hydraulic reservoir, pressure regulator valve and the hydralic pressure gauge that connects successively; Described electrohydraulic servo system comprises solenoid valve and electro-hydraulic control box, and the electro-hydraulic control box is by the regulation and control of solenoid valve realization to hydraulic system; Described chuck is divided into upper grip and lower chuck, the both sides up and down that are used for wide GSZ of clamping, communicating with hydraulic reservoir of last lower chuck into and out of oil pipe, identical and the relative installation of the structure of last lower chuck, wherein each chuck comprises chuck screw rod, intermediate plate A, intermediate plate B, crossbeam, small oil tank, 2 intermediate plate screw rods; Described crossbeam and intermediate plate A are fixed on the two ends of 2 intermediate plate screw rods, and intermediate plate B both sides are socketed on the intermediate plate screw rod, and small oil tank is fixed on the intermediate plate B, and intermediate plate B effect lower edge intermediate plate screw rod of hydraulic oil in small oil tank moves, and clamp or loose action to finish.
In the such scheme, the corresponding surface of described intermediate plate B and intermediate plate A is used for wide GSZ sample of clamping, wherein offers the dimpled grain that can hold the grid node on the corresponding surface of at least one intermediate plate, so that clamp the grid sample.
In the such scheme, offer groove on the corresponding surface of at least one intermediate plate among described intermediate plate B and the intermediate plate A, be provided with inner clamp piece in the groove, described inner clamp piece surface is provided with the dimpled grain that can hold the grid node, can change inner clamp piece according to different grids, so that clamp the grid sample.
The invention has the beneficial effects as follows: these anchor clamps have adopted hydraulic way that holding force is provided, and the size of holding force is convenient adjustable, is easy to use freely, and has improved work efficiency greatly.Wide these anchor clamps of GSZ at unlike material and specification can be selected different holding forces for use, have avoided the excessive or too small phenomenon of holding force, thereby for tension test provides accurately, authentic data.
Description of drawings
Fig. 1 is the principle of work synoptic diagram of anchor clamps of the present invention;
Fig. 2 is the front view of upper grip in the anchor clamps of the present invention;
Fig. 3 is the vertical view of chuck;
Fig. 4 is the right view of chuck;
Fig. 5 is that the C of chuck is to view;
Fig. 6 is the D-D cut-open view among Fig. 5.
Embodiment
Below in conjunction with drawings and Examples, further specify the present invention.
Referring to figs. 1 through Fig. 4, wide GSZ anchor clamps of fluid pressure type of the present invention, its structure is made up of hydraulic power unit, electrohydraulic servo system and chuck three parts; Chuck is fixed on the testing machine 11 by the chuck screw rod 4 of its end, and the chuck screw rod is a metal material, and the clamping device of the size of diameter, length and testing machine will mate.(1) hydraulic power unit provides power for anchor clamps, and hydraulic power unit mainly comprises hydraulic power unit motor 7, hydraulic reservoir 9, pressure regulator valve 12 and the hydralic pressure gauge 8 that connects successively.Hydraulic power unit motor 7 is a three phase electric machine, and the three phase electric machine of selling on the market all can generally speaking.Hydraulic reservoir 9 has good sealing property, and effectively working volume is not less than 30L, and is equipped with sealing gasket etc. in oil pipe and pumping plant junction to guarantee fastening, the sealing of pumping plant oil circuit, energy automatic oil return after pressure disappears.The range that hydralic pressure gauge 8 shows is not less than 60MPa, and precision 1MPa is placed in hydraulic reservoir oil-out place, can accurately show the height of oil pressure.Before pressure regulator valve 12 was placed in hydralic pressure gauge, promptly the hydraulic oil of hydraulic reservoir through behind the pressure regulator valve, passed through hydralic pressure gauge earlier again.Pressure regulator valve can be counterclockwise and be turned clockwise, and finishes the variation of oil-out thickness by rotation, to adjust the size of holding force.(2) electrohydraulic servo system comprises solenoid valve 13 and electro-hydraulic control box 6, and the electro-hydraulic control box is realized regulation and control to hydraulic system by solenoid valve, thus realize hydraulic power unit unlatching, go up lower chuck clamping, action such as unclamp.(3) chuck is divided into upper grip 3 and lower chuck 1, is used for the both sides up and down of wide GSZ 2 of clamping, the communicating with hydraulic reservoir 9 through pressure regulator valve 12 into and out of oil pipe 5,10 of last lower chuck; Identical and the relative installation of the structure of last lower chuck, wherein each chuck comprises chuck screw rod 4, intermediate plate A16, intermediate plate B15, crossbeam 23,17,2 intermediate plate screw rods 14 of small oil tank; Crossbeam 23 and intermediate plate A16 are fixed on the two ends of 2 intermediate plate screw rods 14 with screw in both sides, intermediate plate B15 both sides are socketed on the intermediate plate screw rod 14, small oil tank 17 is fixed by bolts on the intermediate plate B15, the beam hanger outer end of small oil tank is fixed on the crossbeam 23, and intermediate plate B15 effect lower edge intermediate plate screw rod of hydraulic oil in small oil tank moves.When hydraulic oil enters small oil tank from oil-in 18 is oil cylinder when being in the oil-feed state, and intermediate plate B level is close to intermediate plate A, finishes to clamp action.Otherwise, when hydraulic oil when oil-out 19 flows out, intermediate plate B level moves away from intermediate plate A in the other direction, finishing lax action.
With reference to Fig. 5 and Fig. 6, the corresponding surface of intermediate plate B15 and intermediate plate A16 is used for wide GSZ sample of clamping, wherein directly offers the dimpled grain 22 that can hold the grid node on the corresponding surface of at least one intermediate plate, so that clamp the grid sample.Intermediate plate B and intermediate plate A also can offer dimpled grain.In like manner, offer groove 21 on the corresponding surface of at least one intermediate plate among intermediate plate B15 and the intermediate plate A16, be provided with inner clamp piece 20 in the groove, inner clamp piece 20 surfaces are provided with the dimpled grain 22 that can hold the grid node, can change inner clamp piece according to different grids, so that clamp the grid sample.Intermediate plate B and intermediate plate A also can be provided with inner clamp piece 20, and it is corresponding that want dimpled grain 22 positions of intermediate plate A, B, requirement ± 1mm.
Except that GSZ, anchor clamps of the present invention also can be used for the tension test of geotextile.
Test procedure:
1. anchor clamps energized, preheating 15 minutes.
2. chuck is fixing: upper and lower chuck is fixed on the testing machine by the chuck screw rod of its upper end.
3. the clamping of sample is with lax: the power switch on the start-up control box, press the lax button of electro-hydraulic control box, make chuck be in relaxed state, sample is put between the intermediate plate A and intermediate plate B of chuck, and the node of sample must place between the space of inner clamp piece, after the sample contraposition, by the clamping button of electro-hydraulic control box, sample is clamped.
4. adjustment holding force: set test rate, begin test,, need not debugging when sample is suitable in middle part fracture explanation holding force.If the phenomenon of sample slippage illustrates that holding force is too small, be rotated counterclockwise pressure regulator valve this moment, increase holding force.If sample ruptures at clip position when fracture, illustrate that holding force is excessive, the pressure regulator valve that turns clockwise this moment reduces holding force.
Claims (3)
1. wide GSZ anchor clamps of a fluid pressure type is characterized in that, it is made up of hydraulic power unit, electrohydraulic servo system and chuck three parts; Described hydraulic power unit mainly comprises hydraulic power unit motor, hydraulic reservoir, pressure regulator valve and the hydralic pressure gauge that connects successively; Described electrohydraulic servo system comprises solenoid valve and electro-hydraulic control box; Described chuck is divided into upper grip and lower chuck, the communicating with hydraulic reservoir of last lower chuck into and out of oil pipe, and the identical and relative installation of the structure of last lower chuck, wherein each chuck comprises chuck screw rod, intermediate plate A, intermediate plate B, crossbeam, small oil tank, 2 intermediate plate screw rods; Described crossbeam and intermediate plate A are fixed on the two ends of 2 intermediate plate screw rods, and intermediate plate B both sides are socketed on the intermediate plate screw rod, and small oil tank is fixed on the intermediate plate B, and intermediate plate B effect lower edge intermediate plate screw rod of hydraulic oil in small oil tank moves.
2. wide GSZ anchor clamps of fluid pressure type according to claim 1 is characterized in that, offer the dimpled grain that can hold the grid node on the corresponding surface of at least one intermediate plate among described intermediate plate B and the intermediate plate A.
3. wide GSZ anchor clamps of fluid pressure type according to claim 1, it is characterized in that, offer groove on the corresponding surface of at least one intermediate plate among described intermediate plate B and the intermediate plate A, be provided with inner clamp piece in the groove, described inner clamp piece surface is provided with the dimpled grain that can hold the grid node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020232862 CN201732038U (en) | 2010-06-22 | 2010-06-22 | Hydraulic fixture for wide-width tensile test of geogrid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020232862 CN201732038U (en) | 2010-06-22 | 2010-06-22 | Hydraulic fixture for wide-width tensile test of geogrid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201732038U true CN201732038U (en) | 2011-02-02 |
Family
ID=43523196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020232862 Expired - Fee Related CN201732038U (en) | 2010-06-22 | 2010-06-22 | Hydraulic fixture for wide-width tensile test of geogrid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201732038U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986129A (en) * | 2010-06-22 | 2011-03-16 | 交通运输部公路科学研究所 | Hydraulic wide geogrid clamp |
| CN103688004A (en) * | 2011-06-15 | 2014-03-26 | 格勒德系统技术公司 | A grating clamp and method for fixing a grating to a support |
-
2010
- 2010-06-22 CN CN 201020232862 patent/CN201732038U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986129A (en) * | 2010-06-22 | 2011-03-16 | 交通运输部公路科学研究所 | Hydraulic wide geogrid clamp |
| CN101986129B (en) * | 2010-06-22 | 2013-09-11 | 交通运输部公路科学研究所 | Hydraulic wide geogrid clamp |
| CN103688004A (en) * | 2011-06-15 | 2014-03-26 | 格勒德系统技术公司 | A grating clamp and method for fixing a grating to a support |
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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: 20110202 Termination date: 20140622 |
|
| EXPY | Termination of patent right or utility model |