CN204988861U - Friction test equipment is drawn to geosynthetic material staight scissors - Google Patents

Friction test equipment is drawn to geosynthetic material staight scissors Download PDF

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Publication number
CN204988861U
CN204988861U CN201520581024.0U CN201520581024U CN204988861U CN 204988861 U CN204988861 U CN 204988861U CN 201520581024 U CN201520581024 U CN 201520581024U CN 204988861 U CN204988861 U CN 204988861U
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Prior art keywords
box
case
geosynthetics
test
shear
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CN201520581024.0U
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Chinese (zh)
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臧祥力
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臧祥力
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Abstract

The utility model discloses a friction test equipment is drawn to geosynthetic material staight scissors includes: the test bench sets up one and has the support frame that pushes down the device on the horizontal table of test bench, push down the device be provided with under top -down shear box go up the box body, install geosynthetic material's sample fixing device and draw the case under the box, last box body of shear box and test bench can be dismantled fixedly, draw the case under box detachably be connected with translational drive apparatus, push down the device sand in the box body on shear box of exerting pressure, translational drive apparatus horizontal migration draws box under the case, carries out direct shear test, go up the box body with shear box and trade to drawing box on the case, remove sample fixing device simultaneously, with the geosynthetic material sample place in draw on the case box and draw the case under between the box to be connected with translational drive apparatus, draw the experiment. Compared with the prior art, the utility model the precision height has, and it is efficient, the test result advantages such as automation that improve equipment more directly perceived.

Description

Geosynthetics staight scissors drawing rub testing equipment
Technical field
The utility model relates to a kind of testing equipment measuring the rubbing characteristics at sand/geotextile interface, in particular for the equipment that direct shear friction test and drawing rub are tested.
Background technology
Mostly existing same category of device is that the principle loaded by mechanical lever counterweight (constant voltage) is tested, test to test precision and accuracy be not easy grasp and also complicated operation test findings directly perceived not.
Utility model content
For problems of the prior art, the purpose of this utility model is to provide a kind of high precision, high efficiency testing equipment, by test geosynthetics and surrounding soil frictional resistance, to measure the drag characteristic of geosynthetics, this equipment can do direct shear test, pull-out test, test findings is more directly perceived, process of the test robotization.
For achieving the above object, the technical solution of the utility model is as follows:
Geosynthetics staight scissors drawing rub testing equipment comprises: testing table, the level table of described testing table arranges one with the bracing frame of hold-down devices, immediately below described hold-down devices, from top to down is provided with shear box upper cartridge body, is provided with the sample fixing device of geosynthetics and drawing case lower box, described shear box upper cartridge body and testing table are detachably fixed, and described drawing case lower box is removably connected with translation driving device; Described hold-down devices applies pressure to the sand in described shear box upper cartridge body, and described translation driving device moves horizontally described drawing case lower box, carries out direct shear test; Shear box upper cartridge body is changed to drawing case upper box, removes sample fixing device simultaneously, geosynthetics sample is placed between described drawing case upper box and drawing case lower box, and is connected with translation driving device, carry out pull-out test.
Further, be connected with computerized control system with described geosynthetics staight scissors drawing rub testing equipment, test figure is transferred in described computerized control system.
Further, described hold-down devices is cylinder.
Further, described cylinder is connected with pressure rod, with cylinder pressure sensors on described pressure rod, described pressure rod bar lower end is provided with gland.
Further, described translation driving device comprises servomotor, is connected with transmission shaft with described servomotor, with force cell on described transmission shaft, transmission shaft is provided with drawing test clamp; When direct shear test, described transmission shaft is fixed on described drawing case lower box away from one end of servomotor; When pull-out test, described transmission shaft is separated with drawing case lower box, simultaneously described drawing test clamp clamping geosynthetics sample.
Further, roller is provided with bottom described drawing case lower box.
Further, described testing table is connected with shear box upper cartridge body by firm bar.
Further, described drawing case lower box is provided with stroke backstay in the side away from described translation driving device.
The utility model compared with prior art has that precision is high, and efficiency is high, and test findings more intuitively improves the advantages such as the robotization of equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model in direct shear test;
Fig. 2 is the cut-open view of shear box in Fig. 1;
Fig. 3 is the structural representation of the utility model at pull-out test;
Fig. 4 is the cut-open view of drawing case in Fig. 3.
Embodiment
Below in conjunction with accompanying drawing, describe embodiment of the present utility model in detail.
As depicted in figs. 1 and 2, rig for testing of the present utility model mainly comprises testing table 100, high-precision servo motor 10 to direct shear friction test, cylinder 1, pressure transducer 8, drawing case lower box 6, shear box upper cartridge body 4, computerized control system 13, portal frame 3.
The level table of testing table 100 is provided with portal frame 3, portal frame 3 top is connected to lower air cylinder 1, cylinder 1 is connected to pressure rod 2, pressure rod 2 is provided with cylinder pressure sensors 16, the end of pressure rod 2 is connected to gland 18, opening power, compressor is inflated, open digital display pressure indicator 17, adjustment normal pressure, cylinder 1 lift, gland 18 rises, at this moment, sample 15 is laid in be positioned at the following position of shear box upper cartridge body 4 sample fixing device 5 on, front end is clamped in the front of shear zone, sample 15 and sample fixing device 5 are glued, ensure that sample 15 is smooth, do not fold and fold, can not relative displacement be there is in sample 15 and sample fixing device 5, shear box upper cartridge body 4 is installed, shear box upper cartridge body 4 is filled with claiming the standard molding sand 19 of accurate quality in advance, journey falls in cylinder 1, gland 18 declines, compression standard molding sand 19, shear box upper cartridge body 4 is connected with firm bar 11 with its left, be the drawing case lower box 6 of bottom with roller below shear box upper cartridge body 4 and sample fixing device 5, drawing case lower box 6 left connects one stroke backstay 12.The right of drawing case lower box 6 is connected with high-precision servo motor 10 by transmission shaft 9, transmission shaft 9 is provided with drawing test clamp 7 and pressure transducer 8.During work, under cylinder 1 acts on, gland 18 is compressed standard molding sand 19, apply normal pressure, horizontal load is set, at high-precision servo motor 10 with under the effect of transmission shaft 9, shear box 4 is moved left and right, records test figure.Test figure sends computerized control system 13 to.
As shown in Figure 3, Figure 4, its testing equipment is on the basis of direct shear test equipment, shear box upper cartridge body 4, sample fixing device 5 is taken off, and is changed to drawing case upper box 14 in drawing rub test.During work, insert standard molding sand 19 according to the density of designing requirement and state by drawing case lower box 6, carefully tamp, the depth of fill flushes with sealing, soil face is smooth, lay sample 15 on native face, the end that stretches is drawn from sealing, is put well by drawing case upper box 14, according to the density of designing requirement and state, drawing case upper box 14 internal standard molding sand 19 is tamped, smooth for the end of sample 15 is put into drawing test clamp 7, centering, steps up uniformly.Opening power, cylinder 1 declines, and gland 18 compresses, and applies normal pressure, arranges horizontal load, and at high-precision servo motor 10 with under the effect of transmission shaft 9, sample moves left and right, and records test figure.Test figure sends computerized control system 13 to.
Above-mentioned example is just for illustration of the utility model, and embodiment of the present utility model is not limited to these examples, and what those skilled in the art made meets the various embodiments of the utility model thought all within protection domain of the present utility model.

Claims (8)

1. geosynthetics staight scissors drawing rub testing equipment, it is characterized in that, this testing equipment comprises: testing table, the level table of described testing table arranges one with the bracing frame of hold-down devices, immediately below described hold-down devices, from top to down is provided with shear box upper cartridge body, is provided with the sample fixing device of geosynthetics and drawing case lower box, described shear box upper cartridge body and testing table are detachably fixed, and described drawing case lower box is removably connected with translation driving device; Described hold-down devices applies pressure to the sand in described shear box upper cartridge body, and described translation driving device moves horizontally described drawing case lower box, carries out direct shear test; Shear box upper cartridge body is changed to drawing case upper box, removes sample fixing device simultaneously, geosynthetics sample is placed between described drawing case upper box and drawing case lower box, and is connected with translation driving device, carry out pull-out test.
2. geosynthetics staight scissors drawing rub testing equipment as claimed in claim 1, it is characterized in that, be connected with computerized control system with described geosynthetics staight scissors drawing rub testing equipment, test figure is transferred in described computerized control system.
3. geosynthetics staight scissors drawing rub testing equipment as claimed in claim 1, it is characterized in that, described hold-down devices is cylinder.
4. geosynthetics staight scissors drawing rub testing equipment as claimed in claim 3, it is characterized in that, described cylinder is connected with pressure rod, with cylinder pressure sensors on described pressure rod, described pressure rod bar lower end is provided with gland.
5. geosynthetics staight scissors drawing rub testing equipment as claimed in claim 1, it is characterized in that, described translation driving device comprises servomotor, is connected with transmission shaft with described servomotor, with pressure transducer on described transmission shaft, transmission shaft is provided with drawing test clamp; When direct shear test, described transmission shaft is fixed on described drawing case lower box away from one end of servomotor; When pull-out test, described transmission shaft is separated with drawing case lower box, simultaneously described drawing test clamp clamping geosynthetics sample.
6. geosynthetics staight scissors drawing rub testing equipment as claimed in claim 1, is characterized in that, be provided with roller bottom described drawing case lower box.
7. geosynthetics staight scissors drawing rub testing equipment as claimed in claim 1, is characterized in that, described testing table is connected with shear box upper cartridge body by firm bar.
8. geosynthetics staight scissors drawing rub testing equipment as claimed in claim 1, it is characterized in that, described drawing case lower box is provided with stroke backstay in the side away from described translation driving device.
CN201520581024.0U 2015-08-05 2015-08-05 Friction test equipment is drawn to geosynthetic material staight scissors Active CN204988861U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520581024.0U CN204988861U (en) 2015-08-05 2015-08-05 Friction test equipment is drawn to geosynthetic material staight scissors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520581024.0U CN204988861U (en) 2015-08-05 2015-08-05 Friction test equipment is drawn to geosynthetic material staight scissors

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CN204988861U true CN204988861U (en) 2016-01-20

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CN201520581024.0U Active CN204988861U (en) 2015-08-05 2015-08-05 Friction test equipment is drawn to geosynthetic material staight scissors

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107144466A (en) * 2017-05-23 2017-09-08 山东大学 Determine the device and method of earth working material nonlinear mechanics character in pull-out test

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107144466A (en) * 2017-05-23 2017-09-08 山东大学 Determine the device and method of earth working material nonlinear mechanics character in pull-out test
CN107144466B (en) * 2017-05-23 2019-12-20 山东大学 Device and method for determining nonlinear mechanical behavior of geotechnical material in drawing test

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