CN102507336A - Rotatable power and liquid supply ground triaxial testing machine - Google Patents

Rotatable power and liquid supply ground triaxial testing machine Download PDF

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Publication number
CN102507336A
CN102507336A CN2011103582091A CN201110358209A CN102507336A CN 102507336 A CN102507336 A CN 102507336A CN 2011103582091 A CN2011103582091 A CN 2011103582091A CN 201110358209 A CN201110358209 A CN 201110358209A CN 102507336 A CN102507336 A CN 102507336A
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hole
tube
main shaft
groove
ring
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CN102507336B (en
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周明连
何忠良
刘庭伟
武璐
郑博
邓磊
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Beijing Jiaotong University
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Beijing Jiaotong University
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Abstract

A rotatable power and liquid supply ground triaxial testing machine belongs to the technical field of experimental devices. Holes are drilled on an outer cylindrical surface at the upper part of a liquid supply fixing shaft, and a plurality of liquid supply joints are installed on the liquid supply fixing shaft; the lower part of the liquid supply fixing shaft is installed in a center hole of a main shaft; pressure liquid is communicated with a groove through interior drill holes in the liquid supply fixing shaft, corresponds to an interior drill hole on the main shaft, and is introduced to the rotary main shaft; seal rings on the two sides of the groove are used for sealing between the liquid supply fixing shaft and the main shaft hole; and rotary power supply is realized between a fixed upper top plate and a middle part round plate of the rotary main shaft through a conductive circular ring and an electrical contact terminal pressed on the conductive circular ring through a spring. The experimental equipment has a simple and compact structure, and is convenient to operate.

Description

Rotatable power supply feed flow ground triaxial test machine
Technical field
The present invention relates to a kind of ground testing machine equipment, belong to the experimental provision technical field, particularly a kind of ground testing machine that utilizes the CT scan technology that the mechanical property and the deformation process of ground are tested, scanned.
Background technology
The ground testing machine is one of normal experiment equipment in the rock-soil mechanics research.The ground test is the compressive strength of measuring ground, a kind of test of stress-strain relation.Conventional ground testing machine; The ground sample is static in process of the test; Disclose a kind of comprehensive scanning ground CT triaxial apparatus like patent documentation CN2924518Y, joint, the pipeline of its feed flow of supplying power everywhere is connected in and do not rotate on the testing machine or move, and belongs to static power supply feed flow.But under special circumstances, need the ground sample in process of the test, to rotate, for example when situation of change is carried out dynamic scan when stressed to the internal structure of ground sample with industrial CT scan machine, just need to realize rotation power supply feed flow testing machine.
Summary of the invention
The technical matters that the present invention is intended to solve is the rotation power supply feed flow problem of ground sample in the ground testing machine.
Technical scheme of the present invention is following:
A kind of rotatable power supply feed flow ground triaxial test machine comprises motor and reducer casing, gear wheel, pinion shaft, main shaft, self-aligning thrust roller bearing, electric cabinet; Side plate, upper plug in the tube, ground sample, lower plunger in the tube, tube lower bottom base, lower roof plate, base; Hydraulic cylinder, column, test specimen tube, pad, upper plate, ball bearing, spindle end baffle plate; Upper end cover, external pipe, pipe joint, feed flow stationary shaft, axis pin base, pin, pressing plate; The insulation annulus, conductive ring, electrical contact, spring, O-ring seal, register pin; Base is the square platform of boring, in cavity center hydraulic cylinder is installed, and four root posts are fixed in four legholes of four jiaos of bases, and lower roof plate is actively socketed on four root posts, can slide at vertical direction along column, and upper plate and four root posts are fixedly sleeved; On upper plate Plane Installation upper end cover and motor and reducer casing, motor and reducer casing driving pinion axle, the pinion shaft drive fixing is sleeved on the gear wheel on the main shaft upper axis; Main shaft supports with self-aligning thrust roller bearing and ball bearing; The upper surface center of lower roof plate is provided with the bearing seat circular hole, and another Bearing Installation identical with self-aligning thrust roller bearing is in bearing seat; The lower end minor axis of tube lower bottom base is contained in the inner ring of this self-aligning thrust roller bearing; The length of side of square flange that tube lower bottom base upper surface center is provided with the lower end of square locating slot and test specimen tube matches; The ground sample is processed into cylindric, and pad is placed at two ends respectively up and down, and the bottom places on the interior lower plunger.Lower disk surface symmetria bilateralis in the middle of main shaft is installed side plate through screw, and the side plate inside surface is concordant with two opposite flanks of the square flange in test specimen tube upper end.The upper surface of main shaft has center pit, and the feed flow stationary shaft is installed in this hole, and center flange and upper end cover bolt are connected; The differing heights place is drilled with blind hole a and b respectively on the external cylindrical surface of feed flow stationary shaft upper end, at a and place, b aperture screw thread is set, and all installs pipe joint, and external pipe is installed in the pipe joint.Lower surface at the feed flow stationary shaft is drilled with blind hole c and e vertically respectively, and c and b are connected, and e is connected with a; On the external cylindrical surface of feed flow stationary shaft lower end, have two ring groove m and o, in groove m, be drilled with hole d, d is communicated with c, in groove o, be drilled with hole f, f is communicated with e, axial hole c, e lower end are shut with plug; Both sides at annular groove m and o all have seal groove, and identical O-ring seal is housed in the seal groove, and the center pit on O-ring seal and the main shaft matches;
On the external cylindrical surface of main shaft, axial location and the corresponding position of feed flow stationary shaft upper groove o drill through hole p; Drilling through hole n with the corresponding position of groove m.Be drilled with two elongated orifices g and h in the main shaft lower surface, its mesopore g is connected with hole n, and hole h is connected with hole p, with plug the aperture of hole n and p is shut again;
Upper plug upper surface and main shaft lower surface elongated orifices correspondence position are drilled with two hole i and q in tube; Its mesopore q is a through hole; Hole i is a blind hole; In tube, be drilled with aperture j on the upper plug external cylindrical surface and communicate with hole i, with plug aperture j aperture is shut, the lower surface of the interior upper plug of tube has hole k and is communicated with hole j; Upper plug upper surface elongated orifices i and q place have the groove concentric with the hole respectively in tube; In groove, be placed with identical O-ring seal; And the upper plug upper surface all has dowel hole in main shaft lower surface and tube, by register pin the interior upper plug of main shaft and tube is carried out circumferencial direction and locatees, and has guaranteed that hole g, i, j, k communicate; Hole h and q communicate, and in main shaft and tube the mating face seal of upper plug;
Lower surface at upper plate is equipped with the major diameter conducting slip ring, and conducting slip ring is made up of insulation annulus and conductive ring, and conductive ring is pressed on the insulation annulus, is connected on the upper plate through screw again, and conductive ring links to each other with external power source; Axis pin base is through the upper surface of screw retention at main shaft middle part disk; One end of pressing plate is connected in the axis pin base through pin; The pressing plate other end is connected with electrical contact through screw retention, and the upper surface position of corresponding main shaft middle part disk is provided with blind hole, mounting spring in the hole at the pressing plate middle part; Spring withstands on the pressing plate, and electrical contact is pressed on the conductive ring.
When the bottom liquid cylinder pressure axially loads the ground sample; Lower roof plate moves up along column; Axial thrust is born by a pair of self-aligning thrust roller bearing of installing on lower roof plate, the upper plate; And pass to the ground sample, thereby realize axial loading to the ground sample through lower plunger, a tube lower bottom base in upper plug, pad, the tube in main shaft, the tube; When motor and reducer casing rotation, drive the pinion shaft rotation, pinion shaft drives the gear wheel rotation, thus the drive main axis rotation, because feed flow stationary shaft and upper end cover are connected the relative feed flow stationary shaft rotation of main shaft; Hydraulic oil is through external pipe; Be input among the hole b of feed flow stationary shaft, hydraulic oil arrives groove m through via hole b, c, d, when the relative feed flow stationary shaft of main shaft rotates; Hydraulic oil flows into the hole n of main shaft through groove m; In via hole g flows into tube among the blind hole i of upper plug, the j through the hole provides confined pressure by hole k outflow for the ground sample at last again; Hole a on the feed flow stationary shaft can import water, solution or gas according to requirement of experiment, is example with input water, and water is input to the hole a of feed flow stationary shaft by external pipe; A, e, f flow into groove o through the hole; During the rotation of the relative feed flow stationary shaft of main shaft, water flows into the hole p of main shaft through groove o, again in via hole h flows into tube among the through hole q of upper plug; A plurality of through holes on the pad of ground sample top infiltrate the ground sample, and required experimental situation is provided; Under the effect of hydraulic cylinder axial force; The ground sample structure changes, and water penetrates the ground sample, passes through the aperture on the pad of ground sample below again; Flow into lower plunger in the tube; Lower plunger has axially extending bore s in the tube, and water can flow among the osculum u, t of tube lower bottom base through hole s, and it is outside to be discharged to the ground testing machine.Thereby realize the rotation feed flow or the air feed of ground sample.
The insulation annulus and the conductive ring of major diameter conducting slip ring is fixed during main axis rotation; Conductive ring is connected with external power source; And electrical contact rotates along with main shaft together; And be pressed on the conductive ring acting on of spring, lead connects electrical contact and the interior electric elements of electric cabinet through through hole r; Thereby realize the rotation power supply.
Beneficial effect of the present invention: this ground testing machine can apply axle pressure for the ground sample, and radially during fluid pressure, the ground sample can rotate, thereby is convenient to the scanning of industry CT to the ground sample, so that the inner variation of research ground.
Description of drawings
The rotatable power supply feed flow of Fig. 1 ground triaxial test machine face cut-open view
II partial enlarged drawing among Fig. 2 Fig. 1
III partial enlarged drawing among Fig. 3 Fig. 1
I partial enlarged drawing among Fig. 4 Fig. 1
Fig. 5 pad front section view
The vertical view of Fig. 6 pad
Among the figure: motor and reducer casing 1, gear wheel 2, pinion shaft 3, main shaft 4, self-aligning thrust roller bearing 5, electric cabinet 6, side plate 7; Upper plug 8 in the tube, ground sample 9, lower plunger 10 in the tube, tube lower bottom base 11, lower roof plate 12, base 13, hydraulic cylinder 14; Column 15, test specimen tube 16, pad 17, upper plate 18, ball bearing 19, spindle end baffle plate 20, upper end cover 21; External pipe 22, pipe joint 23, feed flow stationary shaft 24, axis pin base 25, pin 26, pressing plate 27, insulation annulus 28; Conductive ring 29, electrical contact 30, spring 31, large sealing packing ring 100, register pin 200, small sealing ring 300.
Embodiment
Further introduce concrete structure of the present invention and principle of work in detail below in conjunction with accompanying drawing and embodiment.
A kind of rotatable power supply feed flow ground triaxial test machine comprises motor and reducer casing 1, gear wheel 2, pinion shaft 3, main shaft 4, self-aligning thrust roller bearing 5, electric cabinet 6; Side plate 7, upper plug 8 in the tube, ground sample 9, lower plunger 10 in the tube, tube lower bottom base 11, lower roof plate 12, base 13; Hydraulic cylinder 14, column 15, test specimen tube 16, pad 17, upper plate 18, ball bearing 19, spindle end baffle plate 20; Upper end cover 21, external pipe 22, pipe joint 23, feed flow stationary shaft 24, axis pin base 25, pin 26, pressing plate 27; Insulation annulus 28, conductive ring 29, electrical contact 30, spring 31, large sealing packing ring 100, register pin 200, small sealing ring 300.
As shown in Figure 1; Base 13 is the square platform of boring; In cavity center hydraulic cylinder 14, four root posts 15 are installed and are fixed in four legholes of 13 4 jiaos of bases, lower roof plate 12 is actively socketed on four root posts 15; Can slide at vertical direction along column 15, upper plate 18 and four root posts 15 are fixedly sleeved.On upper plate 18 Plane Installation upper end cover 21 and motor and reducer casing 1, motor and reducer casing 1 driving pinion axle 3, pinion shaft 3 drive fixing are sleeved on the gear wheel 2 on main shaft 4 upper axis; Main shaft 4 usefulness self-aligning thrust roller bearings 5 support with ball bearing 19.
The upper surface center of lower roof plate 12 is provided with the bearing seat circular hole, and second self-aligning thrust roller bearing is installed in the bearing seat; The lower end minor axis of tube lower bottom base 11 is contained in the inner ring of this second self-aligning thrust roller bearing; The length of side that tube lower bottom base 11 upper surface centers are provided with the square flange of square locating slot and test specimen tube 16 lower ends matches;
Ground sample 9 is processed into cylindric, and pad 17 is placed at two ends respectively up and down, and the bottom places on the interior lower plunger 10, and top withstands on the lower surface of interior upper plug 8.Lower disk surface symmetria bilateralis in the middle of main shaft 4 is installed side plate 7 through screw, and side plate 7 inside surfaces are concordant with two opposite flanks of the square flange in test specimen tube 16 upper ends.
Like Fig. 2, shown in Figure 3, the upper surface of main shaft 4 has center pit, and feed flow stationary shaft 24 adopts clearance fit to be installed in this hole, and feed flow stationary shaft 24 intermediate flange and upper end cover 21 usefulness bolts are connected, and main shaft 4 can relatively rotate with feed flow stationary shaft 24 like this.Differing heights is drilled with 2 blind hole a and b respectively on the feed flow stationary shaft 24 upper end external cylindrical surfaces, and the place is provided with screw thread in two apertures, all installs pipe joint 23, and external pipe 22 is installed in the pipe joint 23.The degree of depth of hole a is big, and the degree of depth of hole b is little; Lower surface at feed flow stationary shaft 24 is drilled with 2 blind hole c and e vertically, and c and b are connected, and e is connected with a.On feed flow stationary shaft 24 lower end external cylindrical surfaces, have 2 ring groove m and o, in groove m, be drilled with hole d, d is communicated with c; In groove o, be drilled with hole f, f is communicated with e, axial hole c, e lower end are shut with plug; Realized that like this hole a, e, f communicate, hole b, c, d communicate.Both sides at annular groove m and o all have seal groove, and identical large sealing packing ring 100 is housed in the seal groove, and the center pit on large sealing packing ring 100 and the main shaft 4 matches.
On the external cylindrical surface of main shaft 4, axial location and the corresponding position of feed flow stationary shaft 24 upper groove o drill through hole p; Drilling through hole n with the corresponding position of groove m.Be drilled with 2 elongated orifices g and h vertically in main shaft 4 lower surfaces, its mesopore g is connected with hole n, and hole h is connected with hole p, with plug the aperture of hole n and p is shut again;
Like Fig. 2, shown in Figure 3; Upper plug 8 upper surfaces and main shaft 4 lower surface elongated orifices correspondence positions are drilled with 2 hole i and q in tube; Its mesopore q is a through hole, and hole i is a blind hole, in tube, is drilled with aperture j on upper plug 8 external cylindrical surfaces and communicates with hole i; With plug aperture j aperture is shut, the lower surface of the interior upper plug 8 of tube has hole k and is communicated with hole j again.
Upper plug 8 upper surface elongated orifices i and q place have concentric groove respectively in tube; In groove, be placed with identical small sealing ring 300; And upper plug 8 upper surfaces have dowel hole in main shaft 4 lower surfaces and tube, carry out circumferencial direction by the interior upper plug 8 of 200 pairs of main shafts of register pin 4 and tube during work and locate, and have guaranteed that like this hole g, i, j, k communicate; Hole h and q communicate, and in main shaft 4 and tube the mating face seal of upper plug 8.
Like Fig. 5, shown in Figure 6, pad 17 is thin disc structure, and its upper surface has annular groove, has a plurality of through holes in the groove, is 12 through holes in the present embodiment; Have circular groove at the upper surface center, the groove center has through hole, and annular groove is communicated with through a plurality of transverse grooves with the central circular groove, in the present embodiment for being uniformly distributed with 3 transverse grooves.
Like Fig. 1, shown in Figure 4; Lower surface at upper plate 18 is equipped with the major diameter conducting slip ring, and conducting slip ring is made up of with conductive ring 29 insulation annulus 28, and conductive ring 29 is pressed on the insulation annulus 28; Be connected on the upper plate 18 through screw, conductive ring 29 can link to each other with external power source again; Axis pin base 25 is through the upper surface of screw retention at main shaft 4 middle part disks; One end of pressing plate 27 is connected in the axis pin base 25 through pin 26; Pressing plate 27 other ends are connected with electrical contact 30 through screw retention, and the upper surface position of corresponding main shaft 4 middle part disks is provided with blind hole at pressing plate 27 middle parts, and mounting spring 31 in the hole; Spring 31 withstands on the pressing plate 27, and electrical contact 30 is pressed on the conductive ring 29; As shown in Figure 1, thin axle circumferential outer surface is equipped with arc electric cabinet 6 in multidiameter main shaft 4 lower ends, and lead can connect electrical contact 30 and electric cabinet 6 inner electric elements through the through hole r on the main shaft 4 middle part disks.When having realized main shaft 4 rotations like this, external power is connected through conductive ring 29 and electrical contact 30 and electric cabinet 6 inner electric elements.
As shown in fig. 1, lower plunger 10 centers have through hole s in tube, have blind hole u in the square locating slot center of tube lower bottom base 11, have hole t at tube lower bottom base 11 circumferential outer surfaces and are communicated with hole u.
The concrete principle of work of present embodiment, narrate as follows:
When 14 pairs of ground samples 9 of bottom liquid cylinder pressure axially load; Lower roof plate 12 moves up along column 15; Axial thrust is born by a pair of self-aligning thrust roller bearing of installing on lower roof plate 12, the upper plate 18 5; And pass to ground sample 9, thereby realize axial loading to ground sample 9 through lower plunger 10, a tube lower bottom base 11 in upper plug 8, pad 17, the tube in main shaft 4, the tube; When motor and reducer casing 1 rotation, drive pinion shaft 3 rotations, pinion shaft 3 drives gear wheels 2 rotations; Thereby drive main shaft 4 rotations; Side plate 7 on the main shaft 4 drives test specimen tube 16 rotations, and test specimen tube 16 drives tube lower bottom base 11 and rotates, and realizes the rotation of ground sample 9; Because feed flow stationary shaft 24 is connected with upper end cover 21, main shaft 4 relative feed flow stationary shaft 24 rotations; Hydraulic oil is through external pipe 22; Be input among the hole b of feed flow stationary shaft 24, hydraulic oil arrives groove m through via hole b, c, d, when main shaft 4 relative feed flow stationary shaft 24 rotate; Hydraulic oil flows into the hole n of main shaft 4 through groove m; In via hole g flows into tube among the blind hole i of upper plug 8, the j through the hole is that ground sample 9 provides confined pressure by hole k outflow at last again; Hole a on the feed flow stationary shaft 24 can import water, solution or gas according to requirement of experiment, is example with input water, and water is input to the hole a of feed flow stationary shaft 24 by external pipe; A, e, f flow into groove o through the hole; During relative feed flow stationary shaft 24 rotations of main shaft 4, water flows into the hole p of main shaft 4 through groove o, again in via hole h flows into tube among the through hole q of upper plug 8; A plurality of through holes on pad 17 infiltrate ground sample 9, and required experimental situation is provided; Under the effect of hydraulic cylinder 14 axial forces, ground sample 9 structures change, and water penetrates ground sample 9; Pass through the aperture on the pad of pad 17 same structures again; Flow into a lower plunger 10 in the tube, a lower plunger 10 has axially extending bore s in the tube, and water can flow among the osculum u, t of tube lower bottom base 11 through hole s; It is outside to be discharged to the ground testing machine, thereby realizes the rotation feed flow or the air feed of ground sample 9.
Like Fig. 1, shown in Figure 4; The insulation annulus 28 of major diameter conducting slip ring is fixed with conductive ring 29 during main shaft 4 rotations; Conductive ring 29 is connected with external power source; And electrical contact 30 rotates along with main shaft 4 together, and is pressed on the conductive ring 29 acting on of spring 31, and lead connects the electric elements in electrical contact 30 and the electric cabinet 6 through through hole r; Thereby realize the rotation power supply.

Claims (1)

1. a rotatable power supply feed flow ground triaxial test machine comprises motor and reducer casing (1), gear wheel (2), pinion shaft (3), main shaft (4), self-aligning thrust roller bearing (5); Electric cabinet (6), side plate (7), upper plug (8) in the tube, ground sample (9), lower plunger (10) in the tube, tube lower bottom base (11); Lower roof plate (12), base (13), hydraulic cylinder (14), column (15), test specimen tube (16), pad (17); Upper plate (18), ball bearing (19), spindle end baffle plate (20), upper end cover (21), external pipe (22), pipe joint (23); Feed flow stationary shaft (24), axis pin base (25), pin (26), pressing plate (27), insulation annulus (28), conductive ring (29); Electrical contact (30), spring (31), large sealing packing ring (100), register pin (200), small sealing ring (300); Base (13) is the square platform of boring; In cavity center hydraulic cylinder (14) is installed; Four root posts (15) are fixed in four legholes of (13) four jiaos of bases; Lower roof plate (12) is actively socketed on four root posts (15), can slide at vertical direction along column (15), and upper plate (18) is fixedly sleeved with four root posts (15); In the last Plane Installation of upper plate (18) upper end cover (21) and motor and reducer casing (1), motor and reducer casing (1) driving pinion axle (3), pinion shaft (3) drive fixing is sleeved on the gear wheel (2) on main shaft (4) upper axis; Main shaft (4) supports with self-aligning thrust roller bearing (5) and ball bearing (19); The upper surface center of lower roof plate (12) is provided with the bearing seat circular hole, and second self-aligning thrust roller bearing is installed in the bearing seat; The lower end minor axis of tube lower bottom base (11) is contained in the inner ring of this second self-aligning thrust roller bearing; Tube lower bottom base (11) upper surface center is provided with square locating slot, and the length of side of the square flange of test specimen tube (16) lower end matches; Ground sample (9) is processed into cylindric, and pad (17) is placed at two ends respectively up and down, and the bottom places on the interior lower plunger (10); Pass through the O-ring seal sealing in the tube between lower plunger (10) and test specimen tube (16) inwall, seal through O-ring seal between upper plug (8) and test specimen tube (16) upper end hole in the tube; Lower disk surface symmetria bilateralis in the middle of main shaft (4) is installed side plate (7) through screw, and side plate (7) inside surface is concordant with two opposite flanks of the square flange in test specimen tube (16) upper end;
It is characterized in that: the upper surface of main shaft (4) has center pit, and feed flow stationary shaft (24) is installed in this hole, and center flange and upper end cover (21) are connected with bolt; The differing heights place is drilled with blind hole a and blind hole b respectively on the external cylindrical surface of feed flow stationary shaft (24) upper end, at blind hole a and place, blind hole b aperture screw thread is set, and all installs pipe joint (23), and pipe joint (23) is gone up external pipe (22) is installed.Lower surface at feed flow stationary shaft (24) is drilled with blind hole c and blind hole e vertically respectively, and blind hole c and blind hole b are connected, and blind hole e is connected with blind hole a; On the external cylindrical surface of feed flow stationary shaft (24) lower end, have two ring groove m and o, in groove m, be drilled with hole d, hole d is communicated with blind hole c, in groove o, be drilled with hole f, hole f is communicated with blind hole e, axial blind hole c and blind hole e lower end are shut with plug; Both sides at ring groove m and groove o all have seal groove, and identical large sealing packing ring (100) is housed in the seal groove, and the center pit on large sealing packing ring (100) and the main shaft (4) matches;
On the external cylindrical surface of main shaft (4), axial location and the corresponding position of feed flow stationary shaft (24) upper groove o drill through hole p; Drilling through hole n with the corresponding position of groove m, be drilled with two elongated orifices g and h vertically at main shaft (4) lower surface, its mesopore g is connected with hole n, and hole h is connected with hole p, with plug the aperture of hole n and hole p is shut again;
(8) upper surface of upper plug in tube and main shaft (4) lower surface elongated orifices correspondence position are drilled with two hole i and q; Being drilled with aperture j on upper plug in tube (8) external cylindrical surface communicates with hole i; With plug aperture j aperture is shut, the lower surface of the interior upper plug (8) of tube has hole k and is communicated with hole j again; Upper plug in tube (8) upper surface elongated orifices i and hole q place have the groove concentric with the hole respectively; In groove, be placed with identical small sealing ring (300); And upper plug (8) upper surface all has dowel hole in main shaft (4) lower surface and tube, by register pin (200) the interior upper plug (8) of main shaft (4) and tube is carried out circumferencial direction and locatees, and has guaranteed that hole g, hole i, hole j, hole k communicate; Hole h and hole q communicate, and in main shaft (4) and tube the mating face seal of upper plug (8);
Lower surface at upper plate (18) is equipped with the major diameter conducting slip ring; Conducting slip ring is made up of insulation annulus (28) and conductive ring (29); Conductive ring (29) is pressed on the insulation annulus (28), is connected on the upper plate (18) through screw again, and conductive ring (29) links to each other with external power source; Axis pin base (25) is through the upper surface of screw retention at main shaft (4) middle part disk; One end of pressing plate (27) is connected in the axis pin base (25) through pin (26); Pressing plate (27) other end is connected with electrical contact (30) through screw retention, and the upper surface position of corresponding main shaft (4) middle part disk is provided with blind hole, mounting spring in the hole (31) at pressing plate (27) middle part; Spring (31) withstands on the pressing plate (27), and electrical contact (30) is pressed on the conductive ring (29).
CN 201110358209 2011-11-11 2011-11-11 Rotatable power and liquid supply ground triaxial testing machine Expired - Fee Related CN102507336B (en)

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CN105891240A (en) * 2016-04-20 2016-08-24 北京交通大学 Double-hydraulic static-pressure supporting type rotatable rock-soil testing machine
CN105928793A (en) * 2016-04-20 2016-09-07 北京交通大学 Rock mechanical testing machine arranged on rotary table
CN106546490A (en) * 2016-10-25 2017-03-29 北京交通大学 Rotatable rock mechanics experiment machine with internal heat
CN107290208A (en) * 2017-07-31 2017-10-24 安徽理工大学 A kind of rock relaxation mechanism for testing and its experimental rig
CN109632502A (en) * 2018-12-11 2019-04-16 四川大学 Multi-joint experimental system and its experimental method
CN110514387A (en) * 2019-08-06 2019-11-29 中国航空工业集团公司哈尔滨空气动力研究所 Wind-tunnel open jet working section rotary system spindle drive
CN111238973A (en) * 2020-03-14 2020-06-05 北京科技大学 Industrial CT machine matched dynamic and static combined loading rock fracture characterization test device and method
CN117388083A (en) * 2023-12-13 2024-01-12 常州森鸿装饰材料股份有限公司 Floor intensity detection device

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