CN210322567U - Triaxial tester - Google Patents

Abstract

The utility model discloses a triaxial test appearance relates to the technical field that soil sample detected, and it includes base, elevating platform, pressure chamber, the up end axial slip of pressure chamber is provided with the piston rod, the up end of elevating platform is rotated and is connected with a plurality of screw rods along elevating platform circumferencial direction align to grid, every the equal threaded connection of tip of screw rod has butterfly nut, the lower terminal surface of pressure chamber is provided with solid fixed ring, gu fixed ring's lateral wall is seted up a plurality of mounting grooves corresponding with screw rod quantity, every the screw rod all with the tank bottom looks butt of corresponding mounting groove when being in vertical state. The utility model has the advantages of it is following: the mounting groove in the fixing ring is aligned to the position of the screw, and the butterfly nut is screwed down to fix the pressure chamber, so that the adjusting times caused by alignment can be effectively reduced compared with the direct fixation of the butterfly bolt, the pressure chamber is convenient to fix, the influence of the piston rod on a sample is avoided, and the accuracy of a test result is ensured.

Description

Triaxial tester

Technical Field

The utility model belongs to the technical field of the technique that sample soil detected and specifically relates to a triaxial tester is related to.

Background

The triaxial compression test is a method for measuring the shear strength of sample soil, and generally 3-4 cylindrical samples are respectively applied with axial pressure under different constant ambient pressures to carry out shearing direct destruction, and then the shear strength is obtained according to the mol-coulomb theory.

The triaxial test apparatus adopted in the triaxial compression test generally comprises a back pressure control system, a surrounding pressure control system, a pressure chamber, a pore water pressure two-side system, a testing machine and the like. Among the prior art, the testing machine includes the base, is provided with the elevating platform on the base, the both sides of elevating platform are provided with the bracing piece, are provided with the crossbeam between the upper end of two spinal branch vaulting poles, and the bottom of crossbeam is provided with axial dynamometer and axial displacement meter, is provided with the pressure chamber on the elevating platform, and the top of pressure chamber is flexible to be provided with the piston rod, and the elevating platform can make piston rod and axial dynamometer conflict after rising, and cylindrical sample sets up between piston rod and elevating platform. Through the continuous rising of elevating platform, piston rod and elevating platform produce shearing destructive power simultaneously.

Above-mentioned triaxial test appearance is in the use, and the staff need take out the pressure chamber earlier, and then places cylindrical sample on the elevating platform, puts back the pressure chamber again and aims at the top of sample with the piston rod, and then passes through butterfly bolt with the pressure chamber and be fixed in on the elevating platform. However, the bolt holes in the pressure chamber are difficult to align to the bolt holes in the lifting table due to the fact that the butterfly bolts shield the bolt holes, the pressure chamber usually needs to be moved for many times to be aligned, but in the process of moving the pressure chamber for many times, the piston rod easily drives the sample to move, and then the stress of the sample in the detection process is changed, so that the test result is inaccurate and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a triaxial test appearance, the location of the pressure chamber of being convenient for is fixed, avoids the piston rod to bring the influence to the sample, guarantees the accuracy nature of test result to the not enough of prior art existence.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a triaxial test appearance, includes the base, sets up elevating platform on the base, sets up the pressure chamber on the elevating platform, the up end axial slip of pressure chamber is provided with the piston rod, the up end of elevating platform is rotated and is connected with a plurality of screw rods along elevating platform circumferencial direction align to grid, every the equal threaded connection of tip of screw rod has butterfly nut, the lower terminal surface of pressure chamber is provided with solid fixed ring, gu fixed ring's lateral wall has seted up a plurality of mounting grooves corresponding with screw rod quantity, every the screw rod all with the tank bottom looks butt of corresponding mounting groove when being in vertical state.

Through adopting above-mentioned technical scheme, aim at the position of screw rod through the mounting groove with on the solid fixed ring, and then screw up butterfly nut and fix the pressure chamber, compare in directly adopting butterfly bolt fixed, can effectively reduce the adjustment number of times that brings because of aiming at, the location of the pressure chamber of being convenient for is fixed, avoids the piston rod to bring the influence to the sample, guarantees the accuracy nature of test result.

The utility model discloses further set up to: the tank bottom of mounting groove sets up to the semicircle arcuation, the lateral wall of screw rod can laminate each other completely with the tank bottom of mounting groove.

Through adopting above-mentioned technical scheme, the lateral wall of screw rod can laminate each other with the tank bottom of mounting groove, has improved the stability after the pressure chamber is fixed.

The utility model discloses further set up to: the upper end face of the lifting platform is provided with a plurality of rotating grooves, and each screw is rotatably connected between two opposite side walls of the corresponding rotating groove.

Through adopting above-mentioned technical scheme, through setting up the rotation portion with the screw rod in rotating the inslot, avoided the installation of hinge lug, guaranteed that the screw rod can laminate mutually with the tank bottom of mounting groove, guaranteed the accuracy nature of pressure chamber location.

The utility model discloses further set up to: the side wall of the rotating groove far away from the pressure chamber is obliquely arranged, and each screw is in butt joint with the oblique side wall of the rotating groove when not in a fixed state, so that the screws are obliquely arranged.

Through adopting above-mentioned technical scheme, the setting of rotating groove slope lateral wall can make the screw rod can not fall and be the slope setting, and the staff of being convenient for operates.

The utility model discloses further set up to: the upper end face of the pressure chamber is also provided with a locking assembly capable of locking the piston rod.

Through adopting above-mentioned technical scheme, through the locking of locking Assembly to the piston rod, can effectively avoid the piston rod to strike the sample or produce the displacement because of the piston rod drives the sample.

The utility model discloses further set up to: the locking assembly comprises a sliding frame which is slidably connected to the upper end face of the pressure chamber, an elastic part is arranged on one side of the sliding frame, an annular groove for clamping the sliding frame is formed in the side wall of the piston rod, and the elastic part pushes the sliding frame to be clamped into the annular groove.

Through adopting above-mentioned technical scheme, under the effect of elastic component, after aiming at the ring channel of piston rod the sliding frame, can make the sliding frame card go into in the ring channel, and then carry on spacingly to the piston rod.

The utility model discloses further set up to: one side of the sliding frame clamped in the annular groove is arc-shaped.

Through adopting above-mentioned technical scheme, the one side of going into the ring channel with the sliding frame card sets up to circular-arc, can effectively improve the sliding frame to the spacing stability of piston rod.

The utility model discloses further set up to: one side of the sliding frame, which is arc-shaped, is rotatably connected with a plurality of rotating rings.

Through adopting above-mentioned technical scheme, through the setting of swivel becket, can effectively reduce the frictional force of piston rod between activity in-process and the sliding frame.

To sum up, the utility model discloses following beneficial effect has:

1. the mounting groove in the fixing ring is aligned to the position of the screw, and the butterfly nut is screwed to fix the pressure chamber, so that compared with the direct fixation by the butterfly bolt, the adjusting times caused by alignment can be effectively reduced, the positioning and fixing of the pressure chamber are facilitated, the influence of the piston rod on a sample is avoided, and the accuracy of a test result is ensured;

2. under the effect of elastic component, aim at the ring channel of piston rod behind the sliding frame, can make the sliding frame card go into in the ring channel, and then carry on spacingly to the piston rod, can effectively avoid the piston rod to strike the sample or drive the sample because of the piston rod and produce the displacement.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a schematic view of a connection structure between the pressure chamber and the elevating platform in the present embodiment;

fig. 3 is a schematic structural diagram of the locking assembly in the present embodiment.

Reference numerals: 1. a base; 2. a lifting platform; 3. a support bar; 4. a cross beam; 5. an axial dynamometer; 6. an axial displacement meter; 7. a pressure chamber; 8. a piston rod; 9. a locking assembly; 91. a sliding frame; 91-1, a pushing part; 91-2, a locking portion; 91-3, sliding part; 92. a limiting ring; 93. a fixed block; 94. a spring; 95. a push rod; 96. a rotating ring; 10. a rotating groove; 11. a screw; 12. a butterfly nut; 13. a fixing ring; 14. mounting grooves; 15. an annular groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A triaxial tester is shown in figure 1 and comprises a base 1, wherein a lifting table 2 is arranged on the upper end face of the base 1 in a lifting mode through a screw rod linkage structure, two supporting rods 3 are fixedly connected to the two sides of the lifting table 2 through the base 1, and a cross beam 4 is fixedly connected between the upper ends of the two supporting rods 3. The bottom end of the crossbeam 4 is fixedly connected with an axial dynamometer 5 and an axial displacement meter 6, the upper end face of the lifting platform 2 is detachably provided with a pressure chamber 7 made of transparent materials, and the upper end face of the pressure chamber 7 is axially provided with a piston rod 8 in a sliding manner. Elevating platform 2 can make piston rod 8 contradict with axial dynamometer 5 after rising, and cylindrical sample sets up between piston rod 8 and elevating platform 2, through elevating platform 2 constantly rising, extrudees in the time of piston rod 8 and elevating platform 2, produces shearing destructive power to the sample.

As shown in fig. 2, the upper end surface of the lifting platform 2 is provided with three rotating grooves 10 uniformly arranged along the circumferential direction of the lifting platform 2, each rotating groove 10 is rotatably connected with a screw 11, and each screw 11 is in threaded connection with a butterfly nut 12. The lower end face of the pressure chamber 7 is fixedly connected with a fixing ring 13, and the side wall of the fixing ring 13 is provided with three mounting grooves 14 corresponding to the three screws 11. The bottom of the mounting groove 14 is semi-arc-shaped, the three screws 11 are abutted against the bottom of the corresponding mounting groove 14 in a vertical state and completely attached to each other, and the mounting and fixing of the pressure chamber 7 can be completed by tightening the butterfly nuts 12.

Wherein, the lateral wall that the groove 10 is kept away from pressure chamber 7 rotates is the slope setting, screw rod 11 with the slope lateral wall looks butt of rotating groove 10 when being in unfixed state, and then make screw rod 11 be the slope form and place, the staff of being convenient for is direct to gather together three screw rods 11, and then fixes pressure chamber 7.

As shown in fig. 3, the upper end surface of the pressure chamber 7 is further provided with a locking assembly 9 capable of locking the piston rod 8, after a sample is placed, a worker can pull out the piston rod 8, firstly, the locking assembly 9 is adopted to limit and fix the piston rod 8, and after the pressure chamber 7 is positioned and fixed, the locking can be released and subsequent normal work can be performed.

The locking assembly 9 comprises a sliding frame 91 located outside the piston rod 8, and two limit rings 92 are fixedly connected to the upper end surface of the pressure chamber 7. The sliding frame 91 comprises a pushing part 91-1, a locking part 91-2 and two opposite sliding parts 91-3, wherein the two opposite sliding parts 91-3 of the sliding frame 91 penetrate through the limiting ring 92, so that the sliding frame 91 is arranged at the upper end surface of the pressure chamber 7 in a sliding connection mode. The upper end surface of the pressure chamber 7 is also fixedly connected with a fixed block 93, the fixed block 93 is positioned on one side of the piston rod 8 facing the pushing part 91-1, a spring 94 is fixedly connected between the fixed block 93 and the pushing part 91-1, and the side wall of the piston rod 8 is provided with an annular groove 15 for the locking part 91-2 to be clamped in.

Wherein, the upper end surface of the pushing part 91-1 is fixedly connected with a pushing rod 95 so as to be convenient for the operation of workers.

Preferably, the locking portion 91-2 is formed in a circular arc shape to improve the fixing ability of the piston rod 8 after being caught in the annular groove 15. And the outer side of the locking part 91-2 is rotatably connected with a plurality of rotating rings 96, the plurality of rotating rings 96 can be clamped in the annular groove 15, and the friction force between the locking part 91-2 and the piston rod 8 can be effectively reduced when the rotating rings 96 are not clamped in the annular groove 15.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection.

Claims (8)

1. The utility model provides a triaxial tester, includes base (1), sets up elevating platform (2) on base (1), sets up pressure chamber (7) on elevating platform (2), the up end axial slip of pressure chamber (7) is provided with piston rod (8), its characterized in that: the utility model discloses a hydraulic pressure pump, including elevating platform (2), the last up end of elevating platform (2) rotates and is connected with a plurality of screw rods (11) along elevating platform (2) circumferencial direction align to grid, every the equal threaded connection of tip of screw rod (11) has butterfly nut (12), the lower terminal surface of pressure chamber (7) is provided with solid fixed ring (13), a plurality of mounting grooves (14) corresponding with screw rod (11) quantity are seted up to the lateral wall of solid fixed ring (13), every screw rod (11) all with the tank bottom looks butt of corresponding mounting groove (14) when being in vertical state.

2. The triaxial tester of claim 1, wherein: the tank bottom of mounting groove (14) sets up to the semicircle arcuation, the lateral wall of screw rod (11) can laminate each other completely with the tank bottom of mounting groove (14).

3. The triaxial tester of claim 1, wherein: a plurality of rotating grooves (10) are formed in the upper end face of the lifting platform (2), and each screw rod (11) is rotatably connected between two opposite side walls of the corresponding rotating groove (10).

4. The triaxial tester of claim 3, wherein: the side wall of the rotating groove (10), which is far away from the pressure chamber (7), is obliquely arranged, and each screw (11) is abutted against the oblique side wall of the rotating groove (10) when in an unfixed state, so that the screw (11) is obliquely arranged.

5. The triaxial tester of claim 1, wherein: the upper end face of the pressure chamber (7) is also provided with a locking assembly (9) capable of locking the piston rod (8).

6. The triaxial tester of claim 5, wherein: locking Assembly (9) are including sliding frame (91) of sliding connection in pressure chamber (7) up end, one side of sliding frame (91) is provided with the elastic component, annular groove (15) that confession sliding frame (91) card was gone into are seted up to the lateral wall of piston rod (8), the elastic component promotes sliding frame (91) card and goes into in annular groove (15).

7. The triaxial tester of claim 6, wherein: one side of the sliding frame (91) clamped in the annular groove (15) is arc-shaped.

8. The triaxial tester of claim 7, wherein: one side of the sliding frame (91) which is arc-shaped is rotatably connected with a plurality of rotating rings (96).

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