CN215574379U

CN215574379U - Strain control type direct shear apparatus

Info

Publication number: CN215574379U
Application number: CN202121996237.1U
Authority: CN
Inventors: 陈亮; 田野; 王磊
Original assignee: China Building Materials Geotechnical Engineering Jiangsu Co Ltd
Current assignee: China Building Materials Geotechnical Engineering Jiangsu Co Ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-01-18
Anticipated expiration: 2031-08-24

Abstract

The utility model discloses a strain control type direct shear apparatus, which comprises a workbench, wherein four corners of the bottom of the workbench are respectively provided with an adjusting support assembly, the top of the workbench is transversely provided with a sliding chute, two groups of sliding columns are arranged in the sliding chute, the top of each sliding column is fixedly connected with a lower box, the right side of each lower box is provided with a pushing assembly, the top of the workbench is fixedly connected with a support frame, a first threaded rod penetrates through the support frame, the bottom end of the first threaded rod is rotatably connected with an upper box, the upper box corresponds to the lower box, and the top of the workbench is provided with a transverse level gauge and a longitudinal level gauge; whether the workbench is in a horizontal state or not is observed through the transverse level meter and the longitudinal level meter, the horizontal state of the workbench can be adjusted through adjusting the supporting assembly, the determination error caused by the inclination of the workbench is avoided, the box is pushed to move through the pushing assembly, the determination of the shear stress value is carried out, and the operation is simple.

Description

Strain control type direct shear apparatus

Technical Field

The utility model relates to the technical field of direct shear apparatuses, in particular to a strain control type direct shear apparatus.

Background

The direct shear apparatus is an indoor apparatus for measuring the shear strength of soil, and is called as the direct shear apparatus for short. During the measurement, a soil sample is placed between an upper metal box and a lower metal box of the direct shear apparatus, certain vertical pressure is applied to the soil sample through a pressure transmission plate and a ball, then horizontal thrust is applied to the lower box, and the sample is subjected to shearing displacement along the horizontal contact surfaces of the upper box and the lower box until the sample is damaged. A method of constant shear strain is commonly employed, known as strain-controlled shear.

Strain control formula staight scissors appearance needs use on level and smooth ground, just can guarantee like this that its measured data error just can be in controllable range, if strain control formula staight scissors appearance uses on uneven ground, strain control formula staight scissors appearance can produce and rock, leads to easily that the error that measured data appears is greater than within the error range of instrument itself.

Based on this, the utility model designs a strain control type direct shear apparatus to solve the above mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a strain control type direct shear, which can observe whether a workbench is in a horizontal state or not through a transverse level gauge and a longitudinal level gauge, can adjust the horizontal state of the workbench through adjusting a supporting assembly, avoids measurement errors caused by the inclination of the workbench, can measure a shear stress value by pushing a lower box to move through a pushing assembly, and is simple to operate so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a strain control formula staight scissors appearance, includes the workstation, workstation bottom four corners department all is equipped with the regulation supporting component, the workstation top is transversely opened there is the spout, be equipped with two sets of slip posts in the spout, slip capital portion fixedly connected with lower box, the box right side is equipped with the lapse subassembly down, workstation top fixedly connected with support frame, there is first threaded rod to pass on the support frame, first threaded rod bottom is rotated and is connected with the box, it is corresponding with lower box to go up the box, the workstation top is equipped with horizontal spirit level and vertical spirit level.

Preferably, the bottom of the workbench is fixedly connected with two groups of connecting rods, and the bottom ends of the connecting rods are fixedly connected with a placing plate.

Based on above-mentioned technical characteristic, the board is placed to the accessible and a plurality of groups soil sample that awaits measuring are placed.

Preferably, the adjusting and supporting assembly comprises a supporting rod, a thread groove is formed in the bottom end of the supporting rod, a thread column is connected in the thread groove in a matched mode, a supporting block is fixedly connected to the bottom end of the thread column, and the supporting block is in a round table shape.

Based on the technical characteristics, the horizontal state of the workbench is adjusted by adjusting the supporting component.

Preferably, the pushing assembly comprises a fixed plate, a second threaded rod penetrates through the fixed plate, the left end of the second threaded rod is rotatably connected with a mounting plate, a pressure detector is mounted on the left side of the mounting plate, and a push plate is connected to the left side of the pressure detector; and a rubber sleeve is sleeved at the right end of the second threaded rod.

Based on the technical characteristics, the lower box is pushed to move through the pushing assembly, and detection is carried out.

Preferably, the top end of the first threaded rod is fixedly connected with a screwing block.

Based on the technical characteristics, the first threaded rod is rotated through the screwing block.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model has novel structure, can observe whether the workbench is in a horizontal state or not through the transverse level gauge and the longitudinal level gauge, can adjust the horizontal state of the workbench through adjusting the supporting component, avoids measurement errors caused by the inclination of the workbench, can measure the shear stress value by pushing the lower box to move through the pushing component, has simpler operation and is very convenient to use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a first perspective structure of the present invention;

FIG. 2 is a schematic view of a second perspective structure of the present invention;

FIG. 3 is a schematic view of an adjustable support assembly according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a strain control type direct shear apparatus, comprising: the device comprises a workbench 1, an adjusting and supporting component 2, a sliding chute 4, two groups of sliding columns 5, a lower box 6, a pushing component 3, a supporting frame 8, a first threaded rod 9, an upper box 7, a transverse level 12 and a longitudinal level 11; whether the workbench 1 is in a horizontal state or not is observed through the transverse level 12 and the longitudinal level 11, when the workbench 1 is in an inclined state, the workbench 1 is leveled through the adjusting and supporting component 2, a soil sample to be measured is placed in the lower box 6, the first threaded rod 9 is rotated, the first threaded rod 9 drives the upper box 7 to move downwards, certain vertical pressure is applied to the soil sample by the upper box 7, and the lower box 6 is pushed to move through the pushing component 3 to be measured.

The bottom of the workbench 1 is fixedly connected with two groups of connecting rods 13, the bottom ends of the connecting rods 13 are fixedly connected with a placing plate 14, and other soil samples to be measured can be placed on the placing plate 14, so that multiple experiments can be conveniently carried out on the soil samples; the top end of the first threaded rod 9 is fixedly connected with a screwing block 10, so that the first threaded rod can be conveniently rotated.

Referring to fig. 3, the adjusting and supporting assembly 2 includes a supporting rod 21, a threaded groove 22 is formed at the bottom end of the supporting rod 21, a threaded column 23 is connected in the threaded groove 22 in a matching manner, a supporting block 24 is fixedly connected to the bottom end of the threaded column 23, when the workbench 1 is in an inclined state, the threaded column 23 correspondingly adjusted and supported is rotated according to the inclined state of the workbench 1, the threaded column 23 moves along the threaded groove 22 to adjust the horizontal state of the workbench 1, and the supporting block 24 is in a circular truncated cone shape and has good stability.

Referring to fig. 2, the pushing assembly 3 includes a fixing plate 31, a second threaded rod 32 penetrates through the fixing plate 31, a mounting plate 33 is rotatably connected to the left end of the second threaded rod 32, a pressure detector 34 is mounted on the left side of the mounting plate 33, a pushing plate 35 is connected to the left side of the pressure detector 34, the second threaded rod 32 is rotated, the second threaded rod 32 drives the mounting plate 33 to move, the mounting plate 33 drives the pushing plate 35 to move through the pressure detector 34, and after the pushing plate 35 is in contact with the lower box 6, the second threaded rod 32 continues to be rotated, and the pushing plate 35 pushes the lower box 6 to move; the right end of the second threaded rod 32 is sleeved with a rubber sleeve 36, so that the second threaded rod 32 can be rotated conveniently.

The specific working principle is as follows:

when the device is used, whether the workbench 1 is in a horizontal state is observed through the transverse level 12 and the longitudinal level 11, when the workbench 1 is in an inclined state, the threaded columns 23 correspondingly adjusted and supported are rotated according to the inclined state of the workbench 1, the threaded columns 23 move along the threaded grooves 22 to adjust the horizontal state of the workbench 1, a soil sample to be measured is placed in the lower box 6, the rest soil samples to be measured can be placed on the placing plate 14, multiple experiments on the soil sample are convenient, the upper box 7 is driven to move downwards by the first threaded rod 9 driven by the first threaded rod 9 through the screwing block 10, a certain vertical pressure is applied to the soil sample by the upper box 7, the second threaded rod 32 is rotated through the rubber sleeve 36, the mounting plate 33 is driven to move by the second threaded rod 32, the mounting plate 33 drives the push plate 35 to move through the pressure detector 34, and after the push plate 35 is contacted with the lower box 6, and the second threaded rod 32 is continuously rotated, the push plate 35 pushes the lower box 6 to move, the lower box 6 drives the sliding column 5 to slide in the sliding groove 4, and the pressure detector 34 can detect the thrust applied to the lower box 6.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a strain control formula staight scissors appearance, includes the workstation, its characterized in that: workstation bottom four corners department all is equipped with the regulation supporting component, the workstation top is transversely opened there is the spout, be equipped with two sets of slip posts in the spout, box under slip capital portion fixedly connected with, the box right side is equipped with the pushing component down, workstation top fixedly connected with support frame, there is first threaded rod to pass on the support frame, first threaded rod bottom is rotated and is connected with the box, it is corresponding with lower box to go up the box, the workstation top is equipped with horizontal spirit level and vertical spirit level.

2. A strain controlled direct shear apparatus as claimed in claim 1, wherein: the bottom of the workbench is fixedly connected with two groups of connecting rods, and the bottom ends of the connecting rods are fixedly connected with a placing plate.

3. A strain controlled direct shear apparatus as claimed in claim 1, wherein: the adjusting and supporting assembly comprises a supporting rod, a thread groove is formed in the bottom end of the supporting rod, a thread column is connected in the thread groove in a matched mode, a supporting block is fixedly connected to the bottom end of the thread column, and the supporting block is in a round table shape.

4. A strain controlled direct shear apparatus as claimed in claim 1, wherein: the pushing assembly comprises a fixed plate, a second threaded rod penetrates through the fixed plate, the left end of the second threaded rod is rotatably connected with a mounting plate, a pressure detector is mounted on the left side of the mounting plate, and a push plate is connected to the left side of the pressure detector.

5. The strain controlled direct shear apparatus of claim 4, wherein: and a rubber sleeve is sleeved at the right end of the second threaded rod.

6. A strain controlled direct shear apparatus as claimed in claim 1, wherein: and the top end of the first threaded rod is fixedly connected with a screwing block.