Cement soil sample preparation and demolding device

Abstract

The utility model relates to a cement soil sample preparation and demolding device which comprises a sample preparation mold and a demolding assembly, the sample preparation mold comprises a bottom cover and a cylindrical pipe body, the bottom cover is provided with a cylindrical convex part, the cylindrical pipe body is provided with a hollow cylindrical pipe cavity, and a lower port of the cylindrical pipe cavity is detachably connected with the cylindrical convex part; the demolding assembly comprises a demolding cylinder and a demolding abutting piece, the diameter of the demolding cylinder is the same as that of the cylindrical pipe cavity, the height of the demolding cylinder is the same as the length of the cylindrical pipe cavity, and the top of the demolding cylinder is used for being inserted into a lower end opening of the cylindrical pipe cavity. According to the cement soil sample preparation and demolding device, through limitation of the cylindrical protruding part, a cylindrical space is reserved at the bottom of the cylindrical pipe cavity, the cylindrical space and the demolding cylinder can form rapid positioning and stably keep the horizontal state, the demolding efficiency is effectively improved, and damage to a test piece and a mold due to inclination is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a cement soil sample preparation and demoulding device. Background Art

[0002] With the development of highway, railway, water conservancy, construction and other engineering fields, in order to carry out ground engineering safely and reliably, the soil needs to be reinforced. The soil in coastal and riverside areas is mainly composed of clay and silt soil, with high water content and good fluidity, which is suitable for engineering reinforcement such as mixing piles and rotary jet piles. The mechanical properties of cement soil require geotechnical tests to measure various effective data to provide a scientific basis for engineering design and construction, and ensure the quality and safety of the project. In order to measure the various mechanical properties of cement soil, it is necessary to make test specimens that meet the requirements. In indoor experiments, the process of making cement soil specimens is to put a certain mass of cement soil mixture with a certain mix ratio into the mold in layers, vibrate and form it for a certain period of time, and then stop for 24-48 days after scraping it flat, remove the mold, and maintain it.

[0003] The existing cement soil sample preparation and demoulding methods have the following main shortcomings: the cubic test block cannot simulate the characteristics of cement mixing pile cylindrical pile formation and core extraction testing, and the cement soil specimens made by the current cylindrical mold are very easy to produce transverse cracks and damage due to human operation during demoulding, resulting in inaccurate test results. In addition, it is extremely difficult to position during demoulding, prone to human damage, and the demoulding efficiency is extremely low. Utility Model Content

[0004] Based on this, the purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and provide a cement soil sample preparation and demoulding device.

[0005] The utility model provides a cement soil sample preparation and demoulding device, comprising:

[0006] Sample preparation molds and demoulding components;

[0007] The sample preparation mold comprises a bottom cover and a cylindrical tube body, wherein the bottom cover is provided with a cylindrical protrusion, and the cylindrical tube body is provided with a hollow cylindrical tube cavity, and the lower end of the cylindrical tube cavity is detachably connected to the cylindrical protrusion;

[0008] The demolding assembly includes a demolding cylinder and a demolding pressing piece. The diameter of the demolding cylinder is the same as the diameter of the cylindrical tube cavity, the height of the demolding cylinder is the same as the length of the cylindrical tube cavity, the top of the demolding cylinder is used to insert into the lower port of the cylindrical tube cavity, and the demolding pressing piece is used to press the top edge of the cylindrical tube body.

[0009] Furthermore, the side wall of the cylindrical protrusion is provided with an external thread, and the lower end of the cylindrical tube cavity is provided with an internal thread that cooperates with the external thread.

[0010] Furthermore, the demolding pressing piece is a demolding sleeve, the inner diameter of the demolding sleeve is larger than the diameter of the cylindrical tube cavity, and the inner diameter of the demolding sleeve is smaller than the diameter of the cylindrical tube body, the height of the demolding sleeve is larger than the length of the cylindrical tube cavity, and the opening of the demolding sleeve is used to press the top of the cylindrical tube body.

[0011] Furthermore, a positioning ring is provided on the opening surface of the demoulding sleeve, and a slot space is formed inside the positioning ring, and the slot space is used to position the top of the cylindrical tube body.

[0012] Furthermore, the demoulding assembly also includes a limiting bottom plate, and the demoulding cylinder is fixed to the limiting bottom plate by screws.

[0013] Furthermore, the sample preparation mold and the demoulding component are both made of hard plastic.

[0014] Compared with the prior art, the cement soil sample preparation and demoulding device of the utility model has the following beneficial effects:

[0015] 1. The cement soil sample preparation and demoulding device of the utility model is restricted by the cylindrical protrusion. The cylindrical space left at the bottom of the cylindrical tube cavity can be quickly positioned with the demoulding cylinder and stably maintain a horizontal state, thereby effectively improving the demoulding efficiency, avoiding damage to the specimen and the mold due to tilting, and avoiding the generation of transverse cracks.

[0016] 2. A cement soil sample preparation and demoulding device of the utility model is provided with a positioning ring on the opening surface of the demoulding sleeve. The demoulding sleeve is quickly positioned and stably maintained in a horizontal state with the cylindrical tube body through the positioning effect of the positioning ring, thereby effectively improving the demoulding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural cross-sectional view of the sample making mold of the utility model;

[0018] Figure 2 for Figure 1 A top view of a sample preparation mold;

[0019] Figure 3 It is a structural cross-sectional view of the demoulding component of the utility model;

[0020] In the figure: 1. bottom cover; 2. cylindrical protrusion; 3. cylindrical tube body; 4. cylindrical tube cavity; 5. limiting bottom plate; 6. demoulding cylinder; 7. cement soil specimen; 8. demoulding sleeve; 9. positioning ring. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0024] Aiming at the technical problem that cement soil specimens made of cylindrical molds in the background technology are prone to transverse cracks during demoulding, the present utility model provides a cement soil sample preparation and demoulding device, such as Figures 1 to 3 As shown, in one embodiment, the cement soil sample preparation and demoulding device includes a sample preparation mold and a demoulding assembly. The sample preparation mold includes a bottom cover 1 and a cylindrical tube body 3, the bottom cover 1 is provided with a cylindrical protrusion 2, the cylindrical tube body 3 is provided with a hollow cylindrical tube cavity 4, the lower end of the cylindrical tube cavity 4 is detachably connected to the cylindrical protrusion 2, so that the sample preparation mold as a whole forms an open container opening upward, and when working, vaseline is applied to the inner surface of the sample preparation mold, and then the mixed cement soil is placed therein for vibration compaction, and after being placed for 24 to 48 hours, the cement soil specimen 7 can be subjected to the subsequent demoulding process after the strength is generated.

[0025] like Figure 3 As shown, the demoulding assembly includes a demoulding cylinder 6 and a demoulding pressing piece. The diameter of the demoulding cylinder 6 is the same as the diameter of the cylindrical tube cavity 4, the height of the demoulding cylinder 6 is the same as the length of the cylindrical tube cavity 4, the top of the demoulding cylinder 6 is used to insert into the lower port of the cylindrical tube cavity 4, and the demoulding pressing piece is used to press the top edge of the cylindrical tube body 3. During demoulding, due to the limitation of the cylindrical protrusion 2, the cement soil specimen 7 formed inside the cylindrical tube cavity 4 does not completely fill the internal space. The cylindrical space left at the bottom of the cylindrical tube cavity 4 can be quickly positioned with the demoulding cylinder 6 and stably maintain a horizontal state, effectively improving the demoulding efficiency and avoiding tilting to cause damage to the specimen and the mold.

[0026] Preferably, the side wall of the cylindrical protrusion 2 is provided with an external thread, and the lower end of the cylindrical tube cavity 4 is provided with an internal thread that cooperates with the external thread. The heights of the threaded areas are adapted to each other, and the cylindrical tube cavity 4 is screwed to the cylindrical protrusion 2 through threads to simply form an open container.

[0027] like Figure 3 As shown, in one embodiment, the demolding pressing member is a demolding sleeve 8, the inner diameter of the demolding sleeve 8 is larger than the diameter of the cylindrical tube cavity 4, and the inner diameter of the demolding sleeve 8 is smaller than the diameter of the cylindrical tube body 3, the height of the demolding sleeve 8 is larger than the length of the cylindrical tube cavity 4, and the opening of the demolding sleeve 8 is used to press the top of the cylindrical tube body 3. The shape and specification of the demolding sleeve 8 ensure that when it contacts the cylindrical tube body 3, the cement soil specimen 7 can be smoothly ejected into the interior of the demolding sleeve 8.

[0028] Preferably, a positioning ring 9 is provided on the opening surface of the demolding sleeve 8, and a slot space is formed in the positioning ring 9. The slot space is used to position the top of the cylindrical tube body 3. The demolding sleeve 8 is quickly positioned and stably maintained in a horizontal state with the cylindrical tube body 3 through the positioning effect of the positioning ring 9, thereby effectively improving the demolding efficiency and further avoiding damage to the specimen and the mold caused by tilting.

[0029] In one embodiment, the demoulding assembly also includes a limiting base plate 5, and the demoulding cylinder 6 is fixed to the limiting base plate 5 by a screw (not shown in the figure). The screw is embedded in the center of the limiting base plate 5, and the demoulding cylinder 6 can be quickly positioned and fixed on the limiting base plate 5.

[0030] In one embodiment, the sample preparation mold and demoulding assembly are both made of hard plastic, which is light and easy for test personnel to operate. The characteristics of the cement soil sample preparation and demoulding device after demoulding are more obvious, and the loosening of the cement soil specimen 7 will make a sound when it is ejected. If the test volume is large, multiple devices of the same size can be demoulded simultaneously in the same hydraulic system, which is conducive to improving efficiency.

[0031] Compared with the prior art, the cement soil sample preparation and demoulding device of the embodiment of the utility model has the following beneficial effects:

[0032] 1. A cement soil sample preparation and demoulding device according to an embodiment of the utility model is restricted by a cylindrical protrusion, and a cylindrical space is left at the bottom of the cylindrical cavity, which can be quickly positioned with the demoulding cylinder and stably maintain a horizontal state, thereby effectively improving the demoulding efficiency, avoiding damage to the specimen and the mold caused by tilting, and avoiding the generation of transverse cracks.

[0033] 2. A cement soil sample preparation and demoulding device according to an embodiment of the utility model is provided with a positioning ring on the opening surface of the demoulding sleeve. The demoulding sleeve is quickly positioned and stably maintained in a horizontal state with the cylindrical tube body through the positioning effect of the positioning ring, thereby effectively improving the demoulding efficiency.

[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A cement soil sample preparation and demoulding device, characterized in that: include: Sample preparation molds and demoulding components; The sample preparation mold comprises a bottom cover and a cylindrical tube body, wherein the bottom cover is provided with a cylindrical protrusion, and the cylindrical tube body is provided with a hollow cylindrical tube cavity, and the lower end of the cylindrical tube cavity is detachably connected to the cylindrical protrusion; The demolding assembly includes a demolding cylinder and a demolding pressing piece. The diameter of the demolding cylinder is the same as the diameter of the cylindrical tube cavity, the height of the demolding cylinder is the same as the length of the cylindrical tube cavity, the top of the demolding cylinder is used to insert into the lower port of the cylindrical tube cavity, and the demolding pressing piece is used to press the top edge of the cylindrical tube body.

2. A cement soil sample preparation and demoulding device according to claim 1, characterized in that: The side wall of the cylindrical protrusion is provided with an external thread, and the lower end of the cylindrical tube cavity is provided with an internal thread that cooperates with the external thread.

3. A cement soil sample preparation and demoulding device according to claim 1, characterized in that: The demoulding pressing piece is a demoulding sleeve, the inner diameter of which is larger than the diameter of the cylindrical tube cavity and smaller than the diameter of the cylindrical tube body, the height of which is larger than the length of the cylindrical tube cavity, and the opening of which is used to press against the top of the cylindrical tube body.

4. A cement soil sample preparation and demoulding device according to claim 3, characterized in that: The opening surface of the demoulding sleeve is provided with a positioning ring, and a slot space is formed inside the positioning ring, and the slot space is used to position the top of the cylindrical tube body.

5. A cement soil sample preparation and demoulding device according to claim 1, characterized in that: The demoulding assembly also includes a limiting bottom plate, and the demoulding cylinder is fixed to the limiting bottom plate by screws.

6. A cement soil sample preparation and demoulding device according to claim 1, characterized in that: The sample-making mold and the demoulding component are both made of hard plastic.

Images