Freeze-thaw cycle test simulation box

Abstract

The utility model relates to the technical field of freezing and thawing cycle test boxes, and discloses a freezing and thawing cycle test simulation box which comprises a test box, the outer wall of the test box is rotatably connected with a box door, a first freezing plate is fixedly assembled at the bottom of an inner cavity of the test box, and a first heating plate is installed on the inner wall of the test box. A second freezing plate is installed on the inner wall of the test box, a second heating plate is installed on the inner wall of the test box, and a limiting rod is fixedly assembled on the inner wall of the test box. According to the freezing and thawing cycle test simulation box, a limiting rod and a driving screw are arranged on the inner wall of the test box, and a moving box can move from one end of a test piece box to the other end under the action of a driving motor, so that the moving box can uniformly spray water into an inner cavity of the test piece box in the moving process; the moisture in the soil can be more uniform, so that the moisture can better fit the actual humidity of the natural frozen soil, and the subsequent circulating freezing and thawing test is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to freeze -thaw cycle test box technical field, concretely is a freeze -thaw cycle test simulation box. BACKGROUND

[0002] In the cold region engineering construction, the characteristics of the change of the frozen soil mechanical properties with the change of the freeze -thaw state should be paid attention to, whether it is the slope stability analysis or the calculation of the foundation bearing capacity, the instability of the frozen soil should be considered. Therefore, it is necessary to observe and study the influence of freeze -thaw cycle on rock and soil, which requires indoor simulation experiment, and freeze -thaw cycle test box needs to be used in indoor simulation experiment.

[0003] When the traditional freeze -thaw cycle test box is used, when the soil is simulated, water needs to be supplemented into the soil, and the traditional equipment is manually added to the soil when supplementing water, which can cause uneven water filling, different humidity in the soil, and the state of the frozen soil after freezing is different from that of the natural frozen soil, thereby affecting the subsequent cycle freeze -thaw test, resulting in deviation of the data obtained by the test. SUMMARY

[0004] In view of the defects of the prior art, the utility model provides a freeze -thaw cycle test simulation box, which has the advantages of uniform water addition and convenient use, and solves the problems raised in the above background technology.

[0005] The utility model provides following technical scheme: a freeze -thaw cycle test simulation box, including test box, the outer wall rotation of test box is connected with the door, the bottom of the inner chamber of test box is fixedly assembled with one frozen plate, the inner wall of test box is installed with one heating plate, the inner wall of test box is installed with two frozen plates, the inner wall of test box is installed with two heating plates, the inner wall of test box is fixedly assembled with the limiting rod, the inner chamber of test box is rotatably connected with drive screw, the outer wall of test box is fixedly assembled with drive motor, the outer wall of limiting rod is movably sleeved with moving box, the outer wall of moving box is fixedly assembled with the catheter, the inner chamber of test box is installed with installation box, the inner chamber of installation box is rotatably connected with two -way screw rod, the outer wall of two -way screw rod is fixedly assembled with knob, the outer wall of two -way screw rod is threadedly connected with moving block, the inner wall of installation box is fixedly assembled with auxiliary rod, the outer wall of moving block is rotatably connected with support plate, the outer wall of support plate is rotatably connected with push plate, the inner chamber of test box is installed with test piece box, the outer wall of moving box is equipped with water spraying hole.

[0006] As a preferred technical scheme of the utility model: the power output shaft of drive motor is connected with the outer wall of drive screw through the outer wall of test box, and the inner wall of moving box is threadedly connected with the outer wall of drive screw.

[0007] As a preferred technical solution of this utility model: the conduit is a rubber corrugated hose, and the inner cavity of the movable box is connected to the inner cavity of the conduit.

[0008] As a preferred technical solution of this utility model: both ends of the outer wall of the bidirectional screw are provided with external threads, and the thread directions at both ends of the outer wall of the bidirectional screw are opposite.

[0009] As a preferred technical solution of this utility model: the outer wall of the auxiliary rod passes through the inner cavity of the moving block, there are two moving blocks, and the two moving blocks are respectively installed at both ends of the outer wall of the bidirectional screw.

[0010] As a preferred technical solution of this utility model: the outer wall of the pusher plate is attached to the outer wall of the test specimen box, and the pusher plate is made of natural rubber.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This freeze-thaw cycle test simulation chamber, through the limiting rod and drive screw set on the inner wall of the test chamber, can move the moving box from one end of the specimen box to the other end under the action of the drive motor. This allows the moving box to evenly spray water into the inner cavity of the specimen box during the movement, making the moisture in the soil more uniform, thus better matching the humidity of actual natural frozen soil, so as to facilitate subsequent freeze-thaw cycle tests.

[0013] 2. This freeze-thaw cycle test simulation chamber, through the installation box set in the inner cavity of the test chamber and the bidirectional screw set in the inner cavity of the installation box, can drive the moving block, thereby driving the support plate and the push plate. The push plate can move along the inner wall of the test chamber, thereby driving the specimen box, making it easier for the specimen box to move out of the test chamber, improving the ease of use of the equipment, and avoiding the traditional equipment where the specimen box is attached to the inner wall of the chamber, making it difficult to take out the specimen box. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the test chamber structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the specimen box structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the test chamber of this utility model;

[0018] Figure 5 This is a schematic diagram of the mounting box structure of this utility model;

[0019] Figure 6 The utility model discloses a limit rod structure schematic view.

[0020] In the drawing: 1, test box, 2, box door, 3, no. 1 refrigeration plate, 4, no. 1 hot plate, 5, no. 2 refrigeration plate, 6, no. 2 hot plate, 7, limit rod, 8, drive screw, 9, drive motor, 10, moving box, 11, guide pipe, 12, mounting box, 13, two-way screw, 14, knob, 15, moving block, 16, auxiliary rod, 17, support plate, 18, push plate, 19, test piece box, 20, water spraying hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Please refer to Figure 1 - Figure 6 A freeze-thaw cycle test simulation box, including test box 1, the outer wall of test box 1 is rotatably connected with box door 2, the bottom of the inner chamber of test box 1 is fixedly equipped with no. 1 refrigeration plate 3, the inner wall of test box 1 is installed with no. 1 hot plate 4, the inner wall of test box 1 is installed with no. 2 refrigeration plate 5, the inner wall of test box 1 is installed with no. 2 hot plate 6, the inner wall of test box 1 is fixedly equipped with limit rod 7, the inner chamber of test box 1 is rotatably connected with drive screw 8, the outer wall of test box 1 is fixedly equipped with drive motor 9, the outer wall of limit rod 7 movably sleeved with moving box 10, the outer wall of moving box 10 is fixedly equipped with guide pipe 11, the inner chamber of test box 1 is installed with mounting box 12, the inner chamber of mounting box 12 is rotatably connected with two-way screw 13, the outer wall of two-way screw 13 is fixedly equipped with knob 14, the outer wall of two-way screw 13 is threadedly connected with moving block 15, the inner wall of mounting box 12 is fixedly equipped with auxiliary rod 16, the outer wall of moving block 15 is rotatably connected with support plate 17, the outer wall of support plate 17 is rotatably connected with push plate 18, the inner chamber of test box 1 is installed with test piece box 19, the outer wall of moving box 10 is provided with water spraying hole 20.

[0023] In the above structure, by setting mounting box 12 in the inner chamber of test box 1 and two-way screw 13 in the inner chamber of mounting box 12, moving block 15 can be driven when two-way screw 13 rotates, so that moving block 15 moves along the outer wall of two-way screw 13, the movement of push plate 18 can be driven in the process of moving block 15 moving, and then the ejection of test piece box 19 is realized under the action of push plate 18.

[0024] In a preferred embodiment: the power output shaft of the driving motor 9 is connected with the outer wall of the driving screw 8 through the outer wall of the test box 1, and the inner wall of the moving box 10 is threadedly connected with the outer wall of the driving screw 8.

[0025] In the above structure, the limiting rod 7 and the driving screw 8 arranged in the inner cavity of the test box 1 can drive the rotation of the driving screw 8 under the action of the driving motor 9. Since the inner wall of the moving box 10 and the outer wall of the driving screw 8 are engaged with each other, the moving box 10 is driven, so that the moving box 10 moves forward and backward along the outer wall of the driving screw 8.

[0026] In a preferred embodiment: the conduit 11 is a rubber corrugated hose, and the inner cavity of the moving box 10 is communicated with the inner cavity of the conduit 11.

[0027] In the above structure, the moving box 10 arranged on the outer wall of the driving screw 8 can supply water to the inner cavity of the moving box 10 under the action of the conduit 11, so that the soil in the inner cavity of the test box 19 is supplemented with water under the action of the moving box 10, so that the humidity of the soil can be equal to the humidity of the soil after the frozen soil melts, so that the humidity condition in the soil during freezing can be equal to the condition in the natural frozen soil.

[0028] In a preferred embodiment: the outer wall of the bidirectional screw 13 is provided with external threads at both ends, and the threads at both ends of the outer wall of the bidirectional screw 13 are opposite in direction.

[0029] In the above structure, the moving block 15 arranged on the outer wall of the bidirectional screw 13 can move along the outer wall of the bidirectional screw 13 in opposite directions when the bidirectional screw 13 rotates, so that the moving block 15 moves to the middle of the bidirectional screw 13 or moves to both ends of the bidirectional screw 13 at the same time, thereby driving the push plate 18.

[0030] In a preferred embodiment: the outer wall of the auxiliary rod 16 passes through the inner cavity of the moving block 15, the number of the moving block 15 is two, and the two moving blocks 15 are respectively installed at both ends of the outer wall of the bidirectional screw 13.

[0031] In the above structure, the auxiliary rod 16 arranged on the inner wall of the mounting box 12 can limit the movement of the moving block 15 under the action of the auxiliary rod 16, so that the moving block 15 can only move forward and backward along the outer wall of the bidirectional screw 13 when the bidirectional screw 13 drives the moving block 15, thereby better driving the push plate 18.

[0032] In a preferred embodiment: the outer wall of the push plate 18 is in close contact with the outer wall of the test piece box 19, and the push plate 18 is made of natural rubber.

[0033] In the above structure, through the support plate 17 arranged on the outer wall of the moving block 15, and the push plate 18 arranged on the outer wall of the support plate 17, the driving of the support plate 17 can be realized in the process of the moving block 15 moving, and then the push plate 18 moves along the inner wall of the test box 1 to the outside of the test box 1, at this time the test piece box 19 can be pushed out of the inner cavity of the test box 1 under the action of the push plate 18, so that the user can better take out the test piece box 19.

[0034] Working principle: in the process of using the above device, when the soil needs to be simulated to freeze and thaw, the soil is placed in the inner cavity of the test piece box 19, and then the test piece box 19 is pushed to make the test piece box 19 enter the inner cavity of the test box 1, at this time the outer wall of the test piece box 19 will contact with the outer wall of the push plate 18, then the soil is watered according to the soil humidity of the frozen soil, at this time the driving motor 9 is started, and the driving motor 9 drives the rotation of the driving screw 8, and the moving box 10 can be driven in the process of the rotation of the driving screw 8, in the process of the moving box 10 moving back and forth along the outer wall of the driving screw 8, the inner cavity of the moving box 10 is supplied with water through the conduit 11, so that the soil is watered in the process of the moving box 10 moving, so that the humidity of the soil is equal to the humidity of the frozen soil, then the temperature in the inner cavity of the test box 1 is lowered under the action of the first freezing plate 3 and the second freezing plate 5 to freeze the soil, when the soil needs to be thawed, the temperature in the inner cavity of the test box 1 is increased under the action of the first heating plate 4 and the second heating plate 6 to realize the freezing and thawing of the soil, after the experiment is completed, the test piece box 19 needs to be moved out, the knob 14 is rotated, the knob 14 drives the rotation of the bidirectional screw 13, the moving block 15 is driven in the process of the rotation of the bidirectional screw 13, the moving block 15 moves to the middle section of the bidirectional screw 13, the support plate 17 can be driven in the process of the moving block 15 moving, and then the push plate 18 is moved, at this time the test piece box 19 is moved under the action of the push plate 18, and the test piece box 19 is pushed out of the inner cavity of the test box 1, so that the test piece box 19 is more convenient to take out.

[0035] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A freeze-thaw cycle test simulation chamber comprising a test chamber (1), characterized in that: The outer wall of the test box (1) is rotatably connected with a box door (2), the bottom of the inner cavity of the test box (1) is fixedly assembled with a first freezing plate (3), the inner wall of the test box (1) is installed with a first heating plate (4), the inner wall of the test box (1) is installed with a second freezing plate (5), the inner wall of the test box (1) is installed with a second heating plate (6), the inner wall of the test box (1) is fixedly assembled with a limiting rod (7), the inner cavity of the test box (1) is rotatably connected with a drive screw (8), the outer wall of the test box (1) is fixedly assembled with a drive motor (9), the outer wall of the limiting rod (7) movably sleeves with a moving box (10), the outer wall of the moving box (10) is fixedly assembled with a conduit (11), the inner cavity of the test box (1) is installed with a mounting box (12), the inner cavity of the mounting box (12) is rotatably connected with a bidirectional screw (13), the outer wall of the bidirectional screw (13) is fixedly assembled with a knob (14), the outer wall of the bidirectional screw (13) is threadedly connected with a moving block (15), the inner wall of the mounting box (12) is fixedly assembled with an auxiliary rod (16), the outer wall of the moving block (15) is rotatably connected with a supporting plate (17), the outer wall of the supporting plate (17) is rotatably connected with a push plate (18), the inner cavity of the test box (1) is installed with a test piece box (19), the outer wall of the moving box (10) is provided with a water spraying hole (20).

2. A freeze-thaw cycle test simulation chamber according to claim 1, characterized in that: The power output shaft of the drive motor (9) penetrates through the outer wall of the test box (1) and is connected with the outer wall of the drive screw (8), and the inner wall of the moving box (10) is threadedly connected with the outer wall of the drive screw (8).

3. A freeze-thaw cycle test simulation chamber as claimed in claim 1, wherein: The conduit (11) is a rubber corrugated hose, and the inner cavity of the moving box (10) is communicated with the inner cavity of the conduit (11).

4. The freeze-thaw cycle test simulation chamber according to claim 1, characterized in that: The outer wall of the bidirectional screw (13) is provided with external threads at both ends, and the thread directions of the two ends of the bidirectional screw (13) are opposite.

5. The freeze-thaw cycle test simulation chamber according to claim 1, wherein: The outer wall of the auxiliary rod (16) penetrates through the inner cavity of the moving block (15), the number of the moving block (15) is two, and the two moving blocks (15) are respectively installed at the outer wall of the bidirectional screw (13) at both ends.

6. A freeze-thaw cycle test simulation chamber as claimed in claim 1, wherein: The outer wall of the push plate (18) is attached to the outer wall of the test piece box (19), and the push plate (18) is made of natural rubber.

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