CN216621932U

CN216621932U - Hinge mold capable of prefabricating fracture rock-soil material at any angle

Info

Publication number: CN216621932U
Application number: CN202120828937.3U
Authority: CN
Inventors: 于卓群; 李庆坤; 吕宜美; 王永岩
Original assignee: Qingdao University of Science and Technology
Current assignee: Qingdao University of Science and Technology
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2022-05-27
Anticipated expiration: 2031-04-20

Abstract

The utility model discloses a hinge die capable of prefabricating fracture rock-soil materials at any angle. The device aims to be matched with a knob type crack angle determiner with scales and an inserting piece for use, cracks are prefabricated in the test piece preparation process to simulate rock body cracks, the hinge structure can be used for facilitating the filling of raw materials in the test piece preparation process, the test piece can be easily taken out when the test piece is demoulded, the test piece is not damaged at all, the problems that raw materials are easy to leak, the demoulding is difficult, the test piece is easy to damage and the like when most of cylindrical test piece preparation molds are used for preparing the test piece are solved, and the mold has the advantages of small size, easiness in operation, capability of prefabricating the cracks and the like; the utility model has convenient operation, easy disassembly and lower cost, and has wide application prospect in the preparation work of the rock-soil test piece.

Description

Hinge mold capable of prefabricating fracture rock-soil material at any angle

Technical Field

The utility model relates to a mold, in particular to a hinge mold capable of prefabricating rock and soil materials with cracks of any angle.

Background

In the current geotechnical engineering field, a great number of scientific researchers and theories research researchers carry out tests and theoretical researches on the geotechnical, wherein uniaxial compression, triaxial compression, confining pressure and the like are very important research experiments in the geotechnical engineering field, and rock masses in the nature generally have cracks. Most laboratories use artificially prepared materials corresponding to the laboratories to perform simulation experiments, for example, simulation experiments are performed by preparing cement, yellow sand, water and the like into test pieces, and sometimes, cracks need to be prefabricated in the test pieces to simulate rock body cracks. However, most of the molds for preparing test pieces are cylindrical molds, so that the demolding is difficult, and cracks with any angle cannot be prefabricated. Based on the introduction, a hinge mold capable of prefabricating fracture rock-soil materials at any angle needs to be designed to improve the preparation efficiency of the test piece.

SUMMERY OF THE UTILITY MODEL

The hinge mould comprises a hinge body, a hinge pin and a hinge pin, wherein the hinge pin is arranged on the hinge body, the hinge pin is connected with the hinge pin through a hinge pin, and the hinge pin is connected with the hinge pin through a hinge pin.

The technical scheme for solving the technical problems is as follows:

1. a hinge mould capable of prefabricating fracture rock-soil materials at any angle comprises a base, a hinge mould with holes, a pin, a knob type fracture angle determiner and an inserting piece; the bottom plate is rectangular and provided with a cylindrical protrusion with the radius equal to that of the inner cylinder wall of the hinge die, and the bottom plate is placed on a flat table top; the hinge die is in a semi-cylindrical shape, one side of the hinge die in the axial direction is provided with a small through hole, the symmetrical side of the hinge die is provided with lugs, and the lower end face of the hinge die is superposed with the upper surface of the bottom plate; the hinge die with the holes is semi-cylindrical, a small through hole is formed in one axial side, lugs are arranged on the symmetrical sides, a radial through hole is formed in the wall of the die, the lower end face of the hinge die with the holes is overlapped with the upper surface of the bottom plate, the radius of the inner and outer cylinder walls of the hinge die with the holes is equal to that of the inner and outer cylinder walls of the hinge die respectively, and the small axial through hole of the hinge die with the holes is coaxial with the small axial through hole of the hinge die and movably connected with the small axial through hole through a pin; the knob type crack angle determiner is a step round table, a rectangular hole is formed in the middle of the knob type crack angle determiner along the axial direction, the radius of a cylinder with a smaller radius of the knob type crack angle determiner is slightly smaller than the radius of an opening hole in the cylinder wall of the hinge die with the hole, and the knob type crack angle determiner and the hinge die with the hole are in clearance fit; the inserting sheet is a key-type solid iron sheet, the thickness of the inserting sheet is slightly smaller than the width of a rectangular opening in the middle of the knob type crack angle determiner, the inserting sheet and the hinge die are in clearance fit, and the knob type crack angle determiner, the inserting sheet, the hinge die with the hole and the hinge die and the base form a test piece die.

Further, the through hole of the hinge mould is coaxial with the through hole of the hole-containing hinge mould, the hinge mould is movably connected with the hole-containing hinge mould through the pin, the hinge mould and the hole-containing hinge mould are wound around the pin to rotate, the hinge mould and the hole-containing hinge mould are attached and separated, and the hinge mould and the hole-containing hinge mould are attached through the fastening effect of the bolt and the nut.

Further, the inserting sheet is inserted into the rectangular opening of the knob type crack angle determiner, and the crack angle of the test piece at a preset angle can be adjusted by rotating the inserting sheet.

Due to the adoption of the technical scheme, the utility model has the advantages that:

1. the structure is simple and compact, and the disassembly and the assembly are convenient;

2. the test piece preparation and demolding process is simple and easy to operate, and the rock and soil test piece containing the fracture with any angle can be prefabricated, so that the efficiency is high;

3. the test piece is easy to demould after initial setting, labor is saved, and the test piece forming quality is good.

Drawings

FIG. 1 is a schematic view of a device in a state before preparation of a test piece according to the present invention;

FIG. 2 is a schematic view of a knob type fracture angle determiner according to the present invention;

in the figure: 1-base, 2-hinge die, 3-hinge die with holes, 4-pin, 5-knob type crack angle determiner and 6-inserting piece

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, the examples of which are set forth to illustrate, but are not to be construed as limiting the utility model.

In fig. 1, a hinge mold capable of prefabricating fracture rock-soil materials at any angle comprises a base 1, a hinge mold 2, a hinge mold 3 with holes, a pin 4, a knob type fracture angle determiner 5 and an inserting piece 6; the bottom plate 1 is a rectangular cylinder protrusion with the radius equal to that of the inner cylinder wall of the hinge die 2 and is placed on a flat table top; the hinge die 2 is in a semi-cylindrical shape, a small through hole in the axial direction is formed in one side of the hinge die, lugs are arranged on the symmetrical sides of the hinge die, and the lower end face of the hinge die 2 is overlapped with the upper surface of the base plate 1; the hinge die 3 with the holes is semi-cylindrical, a small through hole is formed in one side of the hinge die 3 along the axial direction, lugs are arranged on the symmetrical side of the hinge die, a radial through hole is formed in the wall of the die, the lower end face of the hinge die 3 with the holes is overlapped with the upper surface of the base plate 1, the radius of the inner and outer cylinder walls of the hinge die 3 with the holes is equal to that of the inner and outer cylinder walls of the hinge die 2 respectively, and the through hole of the hinge die 3 with the holes is coaxial with that of the hinge die 2 and is movably connected with the hinge die through the pin 4; the knob type fracture angle determiner 5 is a step circular truncated cone, a rectangular hole is formed in the middle of the knob type fracture angle determiner along the axial direction, the radius of a cylinder with a smaller radius of the knob type fracture angle determiner 5 is slightly smaller than the radius of an opening hole in the cylinder wall of the hinge die 3 with the hole, and the knob type fracture angle determiner and the hinge die are in clearance fit; the inserting piece 6 is a key-type solid iron piece, the thickness of the inserting piece is slightly smaller than the width of a rectangular opening in the middle of the knob-type crack angle determiner 5, and the inserting piece and the knob-type crack angle determiner are in clearance fit; the knob type crack angle determiner 5, the inserting pieces 6, the hinge die 3 with holes, the hinge die 2 and the base 1 form a test piece die.

In fig. 2, the knob type fracture angle determiner 5 is used for prefabricating fractures in preparation of a test piece so as to simulate rock body fractures, angle scales are marked on the knob type fracture angle determiner 5 and can rotate freely, rock body fractures with different angles and directions can be simulated accurately, the radius of a cylinder with a larger radius of the knob type fracture angle determiner 5 is slightly smaller than the radius of a radial through hole of the cylinder wall of the perforated hinge mold 3, and the radius of the cylinder with the larger radius is in clearance fit with the radius of the radial through hole of the cylinder wall of the perforated hinge mold 3; the inserting piece 6 is a key-type solid iron piece, the thickness of the inserting piece is slightly smaller than the width of a rectangular opening in the middle of the knob-type crack angle determiner 5, the inserting piece and the rectangular opening are in clearance fit, and the inserting piece 6 can be freely installed and taken down, so that the crack angle is adjusted and solidified in the test piece preparation process, then the crack angle is slowly pulled down, and the crack adjustment is basically completed.

The concrete working flow of the hinge-structure small rock-soil material special die filled with cracks at any angle is as follows: firstly, the base is placed on a flat working table, the lower end face of the hinge die is overlapped with the upper surface of the base, the inner cylinder wall of the hinge die is overlapped with the side face of the base, the lower end face of the hinge die with holes is overlapped with the upper surface of the base, the inner cylinder wall of the hinge die with holes is overlapped with the side face of the base, and the hinge die with holes are movably connected through the pins.

When a test piece is manufactured, the hinge die and the hinge die with holes are tightly attached through bolts and nuts, then a rock-soil material is poured into a closed space formed by the hinge die and the hinge die with holes, the knob type crack angle determiner is rotated to adjust to a preset angle, and one rectangular end of the inserting piece is slowly inserted into a middle rectangular opening of the knob type crack angle determiner. And after the material is solidified, slowly pulling out the inserting piece, and finishing the manufacturing work of the rock and soil test piece containing the crack.

When the test piece is demoulded, the bolt and the nut used for fastening are taken down, the hinge die and the hinge die with holes are rotated, the hinge die and the hinge die with holes are separated, and the test piece demoulding operation is completed.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the utility model, and any modifications, equivalents, improvements and the like made within the spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a hinge mould that can prefabricate arbitrary angle crack geotechnical material which characterized in that: comprises a base, a hinge die with holes, a pin, a knob type crack angle determiner and an inserting piece; the base is a rectangular shape, is provided with a cylindrical protrusion with the radius equal to that of the inner cylinder wall of the hinge die, and is placed on a flat table top; the hinge die is in a semi-cylindrical shape, one side of the hinge die in the axial direction is provided with a small through hole, the symmetrical side of the hinge die is provided with lugs, and the lower end face of the hinge die is superposed with the upper surface of the base; the hinge die with the holes is semi-cylindrical, a small through hole is formed in one axial side, lugs are arranged on the symmetrical sides, a radial through hole is formed in the wall of the die, the lower end face of the hinge die with the holes is overlapped with the upper surface of the base, the radius of the inner and outer cylinder walls of the hinge die with the holes is equal to that of the inner and outer cylinder walls of the hinge die respectively, and the small axial through hole of the hinge die with the holes is coaxial with the small axial through hole of the hinge die and movably connected through the pin; the knob type crack angle determiner is a step round table, a rectangular hole is formed in the middle of the knob type crack angle determiner along the axial direction, and a cylinder with a smaller radius of the knob type crack angle determiner is in clearance fit with the cylinder wall of the hinge die with the hole; the inserting piece is a key-type solid iron piece, the inserting piece is in clearance fit with the knob type crack angle determiner, and the knob type crack angle determiner, the inserting piece, the hinge die with the hole and the hinge die and the base form a test piece die.