Self-loading, self-unloading and self-sealing concrete impervious performance test mold

Abstract

The utility model discloses a self-loading, self-unloading and self-sealing concrete anti-permeability performance testing mold, and belongs to the technical field of concrete testing. The device comprises a test base station, the upper end of the test base station is fixedly provided with a test mold seat, the upper end of the test mold seat is provided with a test mold sleeve, and a demolding assembly is arranged between the test base station and the test mold sleeve; the demolding assembly comprises an installation column fixedly installed on the surface of the testing base table, the outer side of the installation column is fixedly connected with a fixing strip, and the end, away from the testing base table, of the installation column is fixedly connected with a driving motor. By arranging the mounting column, under the starting of the driving motor, the threaded seat on the threaded rod can drive the test mold sleeve to move up and down through the connecting column, and a test piece on the test mold seat can be quickly assembled and disassembled, so that the situation that when the test piece is disassembled and assembled by the test mold sleeve, a screw press or a pressure testing machine in a laboratory is needed is avoided; the test piece is pressed into or out of the test mold, so that the carrying weight of an operator is reduced, and the labor intensity of the operator is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete testing, in particular to a self-loading and self-sealing concrete anti-seepage performance testing mould. Background Art

[0002] The impermeability of concrete is an important indicator for evaluating the quality and durability of concrete. It is also a must-check indicator for concrete quality control at each engineering quality supervision station. Projects with concrete impermeability requirements include hydraulic engineering, port engineering, road and bridge engineering, underground structure engineering, etc. The so-called impermeability refers to the ability of the materials used in buildings to resist the penetration of water or other liquids (light oil, heavy oil) under pressure. The concrete impermeability test is usually carried out using a concrete impermeability meter.

[0003] When installing the test mold sleeve of the existing concrete impermeability tester, the test mold must first be heated to 40°C, and then the test piece coated with sealing material is loaded into the mold cavity, and then the test piece is pressed into the test mold on a press (screw press or a pressure testing machine in the laboratory) and cooled to room temperature, and the test mold with the pressed test piece is installed on the workbench of the impermeability tester, and the nut is tightened evenly. When the test mold sleeve is disassembled, the above operation is also required, so the test mold sleeve needs to be carried back and forth, and the test piece inside the test mold sleeve needs to be pressed or removed. The process is relatively cumbersome. At the same time, the test mold sleeve plus the test piece are heavy, which increases the labor intensity of the operator. Utility Model Content

[0004] The utility model aims to provide a self-loading and self-sealing concrete anti-seepage performance testing mold in view of the problems existing in the prior art.

[0005] To achieve the above object, the utility model adopts the following technical solution: comprising a test base, a test mold seat is fixedly installed on the upper end of the test base, a test mold sleeve is installed on the upper end of the test mold seat, and a demoulding component is provided between the test base and the test mold sleeve;

[0006] The demoulding assembly includes a mounting column fixedly mounted on the surface of the test base, a fixing bar is fixedly connected to the outer side of the mounting column, a driving motor is fixedly connected to one end of the mounting column away from the test base, a screw member is installed at the output end of the driving motor, a connecting column fixedly connected to the test mold sleeve is installed on the screw member, a fixing sleeve is fixedly connected to the lower end of the fixing bar, an abutment seat is installed at one end of the fixing sleeve away from the fixing bar, and a heating element is installed on the test mold sleeve.

[0007] By adopting the above technical solution and providing a demoulding component, the test piece can be demoulded conveniently.

[0008] Optionally, the number of the trial mold seats is six, and a positioning ring is fixedly connected to the surface of the trial mold seat, and the diameter of the positioning ring is smaller than the diameter of the trial mold seat.

[0009] By adopting the above technical solution and setting the positioning ring, the test piece can be positioned and placed.

[0010] Optionally, a sealing ring is fixedly connected to the inner wall of the positioning ring, and the thickness of the sealing ring is 0.5CM-0.8CM.

[0011] By adopting the above technical solution and setting the sealing ring, water seepage can be avoided when the connection between the test mold seat and the test mold sleeve is triggered.

[0012] Optionally, the number of the mounting posts is the same as the number of the trial mold seats, the mounting posts are rectangular, and the inner sides of the mounting posts are hollow, and a slideway is provided on one side of the mounting posts close to the trial mold sleeve.

[0013] By adopting the above technical solution and setting of the slideway, it is possible to prevent the threaded seat from shifting in position when driving the connecting column to move.

[0014] Optionally, the screw rod component is composed of a threaded rod and a threaded seat, the threaded rod is fixedly connected to the output end of the driving motor, and the end of the threaded rod away from the driving motor is movably connected to the inner wall of the mounting column through a bearing, and the outer side of the threaded rod is threadedly connected to the threaded seat.

[0015] By adopting the above technical solution, the threaded seat can be moved upward or downward by rotating the threaded rod.

[0016] Optionally, one end of the abutment seat close to the fixed sleeve is fixedly connected to an adjusting column, the adjusting column is threadedly connected to the fixed sleeve, and a rubber pad is fixedly connected to the lower end of the abutment seat.

[0017] By adopting the above technical solution and adjusting the setting of the column, the distance between the abutment seat and the test mold seat can be adjusted.

[0018] Optionally, the heating element includes a heating chamber opened on the side wall of the trial mold sleeve, an electromagnetic heating coil is installed on the inner wall of the heating chamber, a controller electrically connected to the electromagnetic heating coil is fixedly connected to the outer side of the trial mold sleeve, and thermal insulation cotton is fixedly installed on the side of the heating chamber away from the electromagnetic heating coil.

[0019] By adopting the above technical solution and setting the heating element, the electromagnetic heating ring can heat the inner wall of the trial mold sleeve through the control of the controller, thereby improving the demoulding efficiency.

[0020] Optionally, a protective component is installed on the trial mold sleeve, and the protective component includes a height-enhancing sleeve installed on the top of the trial mold sleeve, the outer side of the height-enhancing sleeve is fixedly connected with a liquid level sensor that penetrates through and extends to the inner side of the height-enhancing sleeve, the outer side of the height-enhancing sleeve is connected to a drain pipe, and an electric control valve is installed on the drain pipe.

[0021] By adopting the above technical solution, the water storage space of the overflow test piece is enlarged by setting the heightening sleeve. When the water in the storage space contacts the liquid level sensor, the liquid level sensor transmits a signal to stop the water supply device, thereby avoiding water overflow and damage to the water supply device.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] 1. By setting the mounting column, when the driving motor is started, the threaded seat on the threaded rod can drive the test mold sleeve to move up and down through the connecting column, and the test piece on the test mold seat can be quickly assembled and disassembled, thereby avoiding the need for the test mold sleeve to use a screw press or a laboratory pressure testing machine to press the test piece into or out of the test mold when disassembling the test piece, reducing the weight of the operator's handling and reducing the labor intensity of the operator; 2. By setting the heating element, with the cooperation of the controller, the electromagnetic heating ring can be controlled to heat the inner wall of the test mold sleeve and melt the sealing material on the outer side of the test piece, thereby improving the demoulding efficiency; 3. By setting the protective component and the setting of the heightening sleeve, the water storage space overflowing from the test piece is enlarged. When the water in the storage space contacts the liquid level sensor, the liquid level sensor transmits a signal to stop the water supply device, thereby avoiding the water supply device from idling after the water supply is completed, thereby damaging the water supply device. On the other hand, it can avoid water overflowing from the upper end of the test mold sleeve, causing the surface of the test base to be all water, affecting the subsequent work. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the test base of the utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the installation column of the utility model;

[0026] Figure 3 This is a schematic diagram of the cross-sectional structure of the connection between the test mold sleeve and the height-increasing sleeve of the utility model;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the test mold base of the utility model.

[0028] In the figure: 1. test base; 2. test mold seat; 21. positioning ring; 22. sealing ring; 3. test mold sleeve; 4. demoulding assembly; 41. mounting column; 411. slideway; 42. fixing bar; 43. driving motor; 431. fixing plate; 44. screw member; 441. threaded rod; 442. threaded seat; 45. connecting column; 46. fixing sleeve; 47. abutment seat; 471. adjusting column; 48. heating element; 481. heating chamber; 482. electromagnetic heating coil; 483. controller; 484. thermal insulation cotton; 5. protection assembly; 51. height increasing sleeve; 52. liquid level sensor; 53. drain pipe; 54. electric control valve. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] Embodiment 1, as Figure 1 As shown in FIG. 4 , the specific scheme of the embodiment is as follows: comprising a test base 1, a test mold seat 2 is fixedly installed on the upper end of the test base 1, a sealing gasket is fixedly connected to the surface of the test mold seat 2, a water outlet is opened at the center of the test mold seat 2, the number of the test mold seats 2 is six, a positioning ring 21 is fixedly connected to the surface of the test mold seat 2, the diameter of the positioning ring 21 is smaller than the diameter of the test mold seat 2, a sealing ring 22 is fixedly connected to the inner side wall of the positioning ring 21, and the thickness of the sealing ring 22 is 0.5CM-0.8CM;

[0032] A test mold sleeve 3 is installed at the upper end of the test mold seat 2, and the diameter of the test mold sleeve 3 is adapted to the inner ring diameter of the positioning ring 21. The outer wall of the test mold seat 2 is fitted with the sealing ring 22, and the lower end of the test mold seat 2 is fitted with the sealing gasket, and the width of the sealing gasket is the same as the thickness of the test mold sleeve 3. A demolding assembly 4 is provided between the test base 1 and the test mold sleeve 3.

[0033] The demoulding assembly 4 includes a mounting column 41 fixedly mounted on the surface of the test base 1, the length of the mounting column 41 is more than twice the height of the test mold seat 2, the number of the mounting columns 41 is the same as the number of the test mold seat 2, the mounting column 41 is rectangular, and the inner side of the mounting column 41 is hollow, a slideway 411 is provided on the side of the mounting column 41 close to the test mold sleeve 3, a fixing bar 42 is fixedly connected to the outer side of the mounting column 41, a driving motor 43 is fixedly connected to the end of the mounting column 41 away from the test base 1, a fixing plate 431 is fixedly connected to the outer side of the driving motor 43, and the fixing plate 431 is fixedly connected to the mounting column 41;

[0034] A screw member 44 is installed at the output end of the driving motor 43, and the screw member 44 is composed of a threaded rod 441 and a threaded seat 442. The threaded rod 441 is fixedly connected to the output end of the driving motor 43, and the threaded rod 441 penetrates and extends to the inner side of the mounting column 41, and the end of the threaded rod 441 away from the driving motor 43 is movably connected to the inner wall of the mounting column 41 through a bearing, and the outer side of the threaded rod 441 is threadedly connected to the threaded seat 442, and a connecting column 45 fixedly connected to the trial mold sleeve 3 is installed on the screw member 44, and the connecting column 45 is located on the inner side of the slideway 411, and the connecting column 45 is fixedly connected to the threaded seat 442.

[0035] The lower end of the fixing bar 42 is fixedly connected with a fixing sleeve 46, the center point of the fixing sleeve 46 and the center point of the water outlet are on the same vertical line, the end of the fixing sleeve 46 away from the fixing bar 42 is installed with a resistance seat 47, the end of the resistance seat 47 close to the fixing sleeve 46 is fixedly connected with an adjustment column 471, the adjustment column 471 is threadedly connected to the fixing sleeve 46, the lower end of the resistance seat 47 is fixedly connected with a rubber pad, and the spacing between the resistance seat 47 and the test piece can be adjusted by setting the adjustment column 471;

[0036] A heating element 48 is installed on the trial mold sleeve 3, and the heating element 48 includes a heating chamber 481 opened on the side wall of the trial mold sleeve 3, and the heating chamber 481 is distributed in a ring shape. An electromagnetic heating coil 482 is installed on the inner wall of the heating chamber 481, and a controller 483 electrically connected to the electromagnetic heating coil 482 is fixedly connected to the outer side of the trial mold sleeve 3. A heat insulation cotton 484 is fixedly installed on the side of the heating chamber 481 away from the electromagnetic heating coil 482. The setting of the heat insulation cotton 484 can prevent heat from being transferred to the outer wall of the trial mold sleeve 3.

[0037] In the second embodiment, a protective component 5 is installed on the test mold sleeve 3, and the protective component 5 includes a heightening sleeve 51 installed on the top of the test mold sleeve 3. The heightening sleeve 51 is welded to the test mold sleeve 3, and the diameter of the heightening sleeve 51 is the same as the diameter of the test mold sleeve 3. The outer side of the heightening sleeve 51 is fixedly connected with a liquid level sensor 52 that penetrates and reaches the inner side of the heightening sleeve 51. The liquid level sensor 52 is a trigger type liquid level sensor. The trigger type liquid level sensor usually realizes signal transmission through the conductivity of the liquid. When the detection part of the trigger type liquid level sensor contacts the liquid, the conductivity of the liquid will cause the circuit to close, thereby transmitting the signal. The outer side of the heightening sleeve 51 is connected with a drain pipe 53, and the drain pipe 53 is installed with an electric control valve 54.

[0038] The working principle of the above embodiment is:

[0039] 1. Check whether the power supply voltage and motor wiring are correct before use;

[0040] 2. Use forming mold (also called sub-mold) to make the shape according to the material ratio required by the design, and then maintain it according to the specifications of the department or international standards;

[0041] 3. The specimen is cured until the day before the test, then taken out, the surface is cooled and dried and wiped clean, all the sealing materials (paraffin wax: rosin = 5:1) are placed in a pot and heated to melt, and after all are melted, the side of the specimen is placed in an iron pan and evenly rolled once (note that the two ends of the specimen are strictly prohibited from being coated with sealing materials);

[0042] 4. Start the driving motor 43, which drives the threaded rod 441 to rotate. With the cooperation of the slideway 411, the threaded seat 442 drives the trial mold sleeve 3 to move upward to the specified position through the connecting column 45;

[0043] 5. Rotate the adjustment column 471 to adjust the distance between the abutment seat 47 and the test mold seat 2, and the distance between the abutment seat 47 and the test mold seat 2 is greater than the height of the test piece;

[0044] 6. The controller 483 controls the electromagnetic heating coil 482 to perform heating treatment so that the temperature of the inner wall of the trial mold sleeve 3 reaches 50 degrees;

[0045] 7. Place the test piece coated with sealing material on the inner side of the positioning ring 21, start the driving motor 43, and make its connecting column 45 drive the test mold sleeve 3 to move downward until the test piece is flush with the bottom surface of the test mold sleeve 3. After being flush, the side wall and bottom wall of the test mold sleeve 3 are tightly fitted with the sealing ring 22 and the sealing gasket;

[0046] 8. If there is no special requirement, the water pump can be started for testing. The test pressure starts from a water pressure of 0.1Mpa, and then the water pressure is increased by 0.1Mpa every 8 hours. When the water in the heightening sleeve 51 contacts the liquid level sensor 52, the liquid level sensor 52 transmits a signal to the control device, and the control device controls the water pump to stop working. Each test mold seat 2 has a separate water pump. When 3 of the 6 water pumps stop running, the test can be stopped, and the electric control valve 54 is started to discharge the water in the heightening sleeve 51 through the drain pipe 53. The water pressure at that time is recorded. If the 6 liquid level sensors 52 do not transmit signals within 8 hours after the specified pressure is added, and the pressure is increased to 1-2Mpa and after 8 hours of constant pressure, the liquid level sensor 52 still transmits no more than 2 signals, the test should also be stopped, and the water pressure at that time should be recorded. During the test, if water seepage is found around the test piece, it should be resealed;

[0047] 9. After the test is completed, the inner wall of the test mold sleeve 3 is heated by the heating element 48 to melt the sealing material of the test piece. While melting, the driving motor 43 is started, and the connecting column 45 drives the test mold sleeve 3 to move upward. With the cooperation of the abutment seat 47, the test piece on the inner side of the test mold sleeve 3 is demolded.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-loading and self-sealing concrete anti-permeability performance test mold, characterized in that: It comprises a test base (1), a test mold seat (2) is fixedly mounted on the upper end of the test base (1), a test mold sleeve (3) is mounted on the upper end of the test mold seat (2), and a demoulding component (4) is provided between the test base (1) and the test mold sleeve (3); The demoulding assembly (4) comprises a mounting column (41) fixedly mounted on the surface of the test base (1); a fixing bar (42) is fixedly connected to the outer side of the mounting column (41); an end of the mounting column (41) away from the test base (1) is fixedly connected to a driving motor (43); a screw member (44) is mounted on the output end of the driving motor (43); a connecting column (45) fixedly connected to the test mold sleeve (3) is mounted on the screw member (44); a fixing sleeve (46) is fixedly connected to the lower end of the fixing bar (42); an abutment seat (47) is mounted on the end of the fixing sleeve (46) away from the fixing bar (42); and a heating element (48) is mounted on the test mold sleeve (3).

2. A self-loading and self-sealing concrete anti-permeability performance testing mold according to claim 1, characterized in that: The number of the trial mold seats (2) is six, and a positioning ring (21) is fixedly connected to the surface of the trial mold seat (2), wherein the diameter of the positioning ring (21) is smaller than the diameter of the trial mold seat (2).

3. A self-loading and self-sealing concrete anti-permeability performance testing mold according to claim 2, characterized in that: The inner side wall of the positioning ring (21) is fixedly connected with a sealing ring (22), and the thickness of the sealing ring (22) is 0.5CM-0.8CM.

4. The self-loading and self-sealing concrete anti-permeability performance testing mold according to claim 1 is characterized by: The number of the mounting columns (41) is the same as the number of the test mold base (2); the mounting columns (41) are rectangular in shape, and the inner side of the mounting columns (41) is hollow; a slideway (411) is provided on one side of the mounting columns (41) close to the test mold sleeve (3).

5. The self-loading and self-sealing concrete anti-permeability performance testing mold according to claim 1 is characterized by: The screw rod member (44) is composed of a threaded rod (441) and a threaded seat (442); the threaded rod (441) is fixedly connected to the output end of the drive motor (43); an end of the threaded rod (441) away from the drive motor (43) is movably connected to the inner wall of the mounting column (41) via a bearing; and the outer side of the threaded rod (441) is threadedly connected to the threaded seat (442).

6. The self-loading and self-sealing concrete anti-permeability performance testing mold according to claim 1 is characterized by: One end of the abutment seat (47) close to the fixed sleeve (46) is fixedly connected to an adjustment column (471), the adjustment column (471) is threadedly connected to the fixed sleeve (46), and a rubber pad is fixedly connected to the lower end of the abutment seat (47).

7. The self-loading and self-sealing concrete anti-permeability performance testing mold according to claim 1 is characterized by: The heating element (48) comprises a heating chamber (481) opened on the side wall of the trial mold sleeve (3); an electromagnetic heating coil (482) is installed on the inner side wall of the heating chamber (481); a controller (483) electrically connected to the electromagnetic heating coil (482) is fixedly connected to the outer side of the trial mold sleeve (3); and a heat insulation cotton (484) is fixedly installed on a side of the heating chamber (481) away from the electromagnetic heating coil (482).

8. The self-loading and self-sealing concrete anti-permeability performance testing mold according to claim 1 is characterized by: The test mold sleeve (3) is provided with a protective assembly (5), the protective assembly (5) comprising a heightening sleeve (51) installed at the top end of the test mold sleeve (3), the outer side of the heightening sleeve (51) being fixedly connected with a liquid level sensor (52) penetrating through and extending to the inner side of the heightening sleeve (51), the outer side of the heightening sleeve (51) being connected with a drainage pipe (53), and the drainage pipe (53) being provided with an electric control valve (54).

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