Mortar test block under-pressure forming device

Abstract

The utility model relates to the technical field of forming devices, in particular to a mortar test block under-pressure forming device. In order to solve the problems that the detection of mortar indexes is often based on a test environment under a normal pressure condition, the molding under a pressure environment is lack of related cognition, and unnecessary construction risks can be brought, the following technical scheme is provided: the device comprises a hollow base; the first sealing gasket is mounted at the top of the base, and a test mold is placed above the first sealing gasket; the pressing plate is arranged above the test mold in a covering manner; a second sealing gasket is mounted at the bottom of the pressing plate; the inflating assembly is arranged at the top of the pressing plate and is used for monitoring the pressure in the test mold; the fixing assemblies are fixedly connected to the top of the base and used for driving a pressing plate to tightly press a test mold to achieve sealing; and the positioning mechanism is mounted on the base. According to the utility model, under-pressure testing can be carried out on mortar, and meanwhile, higher detection precision is ensured, so that the risk in the construction process is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of molding device technology, and in particular to a mortar test block pressure molding device. Background Technology

[0002] In the field of modern building construction, especially in the shield tunneling of rail transit, the application of mortar is indispensable. In shield tunneling, mortar is often used for filling the gaps in the thick walls of the tunnel segments (synchronous grouting of the shield), providing support to the soil above the shield in advance (shield grouting), and filling the soil chamber (shield filling material), among other related purposes. Grouting requires a certain grouting pressure, especially when it is based on air pressure assisted tunneling, the mortar sets under pressure.

[0003] However, the testing of mortar indicators is often based on test environments under normal pressure conditions, and there is a lack of relevant knowledge about molding under pressure, especially for shield grouting materials and shield tunneling filler materials. If the mortar strength is too high under pressure, it will directly lead to encasing the shield body and adhering to the cutterhead, bringing unnecessary construction risks. In view of this, this utility model proposes a mortar test block molding device under pressure. Utility Model Content

[0004] The purpose of this invention is to address the problem that in the background technology, the testing of mortar indicators is often based on the test environment under normal pressure conditions, and there is a lack of relevant knowledge about molding under pressure, which can lead to unnecessary construction risks. This invention proposes a mortar test block molding device under pressure.

[0005] The technical solution of this utility model is as follows: a mortar test block compression molding device, comprising a hollow base; a first sealing gasket installed on the top of the base, with a test mold placed on top of the first sealing gasket; a pressure plate covering the test mold, with a second sealing gasket installed at the bottom of the pressure plate; an inflation component disposed on the top of the pressure plate for monitoring the pressure in the test mold; multiple sets of fixing components fixedly connected to the top of the base, the fixing components being used to drive the pressure plate to press the test mold tightly to achieve sealing; and a positioning mechanism installed on the base, the positioning mechanism being used to position the test mold in the middle position to ensure that the forces applied to the pressure plate by the multiple sets of fixing components are balanced.

[0006] Optionally, the inflation assembly includes a connecting pipe installed on the top of the pressure plate, a through hole in the pressure plate at the location of the connecting pipe, a pressure gauge installed on the top of the connecting pipe, an air inlet pipe connected to one side of the connecting pipe, an air pump connected to one end of the air inlet pipe, a first air valve installed on the air inlet pipe, an exhaust pipe connected to the side of the connecting pipe away from the air inlet pipe, and a second air valve installed on the exhaust pipe.

[0007] Optionally, a clearance hole is provided at the position corresponding to the through hole of the second sealing gasket.

[0008] Optionally, the fixing component includes a threaded post fixedly connected to the top of the base, a washer slidably sleeved on the threaded post, a nut threadedly connected to the threaded post above the washer, and a pressure block slidably engaged with the threaded post below the washer, the pressure block being fixedly connected to the side of the pressure plate.

[0009] Optionally, the pressure block is U-shaped.

[0010] Optionally, the positioning mechanism includes multiple sets of limiting rods fixedly connected to the inner wall of the base. Two sets of moving plates are slidably connected to the multiple sets of limiting rods. The two sets of moving plates are symmetrically arranged on both sides of the mold. Multiple sets of connecting rods are fixedly connected to the top of the moving plates. The connecting rods are L-shaped and pass through the base and slide with it. An adjusting rod is fixedly connected to the side of the connecting rod closest to the mold. The adjusting rod is located between two adjacent sets of threaded columns.

[0011] Optionally, a limiting sleeve is slidably connected to the adjusting rod, and a fixing rod is fixedly connected to both sides of the limiting sleeve. A fixing sleeve is fixedly connected to the end of the fixing rod away from the limiting sleeve, and the fixing sleeve is fixedly connected to the outer ring of the threaded column.

[0012] Optionally, a bidirectional threaded rod is rotatably connected to the base, and two sets of threaded sleeves are threadedly connected to the bidirectional threaded rod. The two ends of the bidirectional threaded rod have opposite thread directions, and the two sets of threaded sleeves are respectively fixedly connected to two sets of movable plates.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] This utility model uses a fixing component to press the pressure plate tightly against the top of the mold, improves the sealing performance through a second sealing gasket, and simultaneously injects gas into the mold through an air inlet pipe to increase the pressure in the mold, thereby enabling the mortar to be tested under pressure.

[0015] Furthermore, by setting up a positioning mechanism, the test mold can be positioned in the middle position, so that when multiple sets of fixing components apply pressure to the pressure plate, the pressure plate is subjected to uniform force, thereby improving the sealing performance of the test mold and improving the accuracy of the test.

[0016] In summary, this invention can perform pressure testing on mortar while ensuring high testing accuracy, thereby effectively reducing risks during construction. Attached Figure Description

[0017] Figure 1 A schematic diagram of a mortar test block compression molding device is provided.

[0018] Figure 2 for Figure 1A schematic diagram of the cross-sectional structure;

[0019] Figure 3 This is a cross-sectional structural diagram of the positioning mechanism.

[0020] Figure label:

[0021] 1. Base; 2. First sealing gasket; 3. Trial mold; 4. Second sealing gasket; 41. Clearance hole; 5. Pressure plate; 51. Through hole;

[0022] 6. Inflation assembly; 61. Connecting pipe; 62. Pressure gauge; 63. Inlet pipe; 64. First air valve; 65. Exhaust pipe; 66. Second air valve;

[0023] 7. Fixing component; 71. Threaded post; 72. Washer; 73. Nut; 74. Pressure block;

[0024] 8. Positioning mechanism; 81. Limiting rod; 82. Moving plate; 83. Connecting rod; 84. Adjusting rod; 85. Limiting sleeve; 86. Fixing rod; 87. Fixing sleeve; 88. Bidirectional threaded rod; 89. Threaded sleeve. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0026] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0027] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example

[0031] like Figures 1 to 3 As shown, this utility model proposes a mortar test block compression molding device, including a hollow base 1. A first sealing gasket 2 is installed on the top of the base 1, and a test mold 3 is placed on top of the first sealing gasket 2. The first sealing gasket 2 is used to seal some test molds 3 with gaps at the bottom. A pressure plate 5 is placed on top of the test mold 3, and a second sealing gasket 4 is installed at the bottom of the pressure plate 5. After the pressure plate 5 presses the test mold 3 tightly, the second sealing gasket 4 achieves a seal. The second sealing gasket 4 has a clearance hole 41 at a position corresponding to the through hole 51, which facilitates the inflation of air into the test mold 3 to form a high-pressure environment.

[0032] Specifically, the aforementioned pressure forming device also includes an inflation assembly 6 located on the top of the pressure plate 5 for monitoring the pressure in the mold 3. The inflation assembly 6 includes a connecting pipe 61 installed on the top of the pressure plate 5, with a through hole 51 on the pressure plate 5 at the location of the connecting pipe 61, allowing the connecting pipe 61 to communicate with the interior of the mold 3. A pressure gauge 62 is installed on the top of the connecting pipe 61 for monitoring the air pressure value. An air inlet pipe 63 is connected to one side of the connecting pipe 61, and one end of the air inlet pipe 63 is connected to an air pump for facilitating the inflation of gas into the mold 3. A first air valve 64 is installed on the air inlet pipe 63, and an exhaust pipe 65 is connected to the side of the connecting pipe 61 away from the air inlet pipe 63. A second air valve 66 is installed on the exhaust pipe 65 for facilitating pressure release after the pressure test is completed.

[0033] Furthermore, the aforementioned pressure forming device includes six sets of fixing components 7 fixedly connected to the top of the base 1. The six sets of fixing components 7 are symmetrically arranged on both sides of the mold 3. The fixing components 7 are used to drive the pressure plate 5 to press the mold 3 tightly to achieve a seal. The fixing components 7 include threaded posts 71 fixedly connected to the top of the base 1, and the position of the threaded posts 71 is fixed. A washer 72 is slidably sleeved on the threaded post 71. A nut 73 is provided above the washer 72 and threadedly connected to the threaded post 71. A pressure block 74 is provided below the washer 72 and slidably engaged with the threaded post 71. The pressure block 74 is fixedly connected to the side of the pressure plate 5. The pressure block 74 is U-shaped. After the nut 73 is tightened, it drives the washer 72 to press down on the pressure block 74, and drives the pressure plate 5 to press down.

[0034] Furthermore, the aforementioned pressure forming device also includes a positioning mechanism 8 mounted on the base 1. The positioning mechanism 8 is used to position the test mold 3 in the middle position to ensure that the forces applied by the multiple sets of fixing components 7 to the pressure plate 5 are balanced. The positioning mechanism 8 includes two sets of limiting rods 81 fixedly connected to the inner wall of the base 1, and the positions of the limiting rods 81 are fixed. Two sets of moving plates 82 are slidably connected to the two sets of limiting rods 81. The moving plates 82 move smoothly under the limiting action of the limiting rods 81. The two sets of moving plates 82 are symmetrically arranged on both sides of the test mold 3. Multiple sets of connecting rods 83 are fixedly connected to the top of the moving plates 82. The connecting rods 83 are L-shaped and pass through the base 1 and slide with it. When the moving plates 82 move, they drive the connecting rods 83 to move synchronously. An adjusting rod 84 is fixedly connected to the side of the connecting rod 83 closest to the test mold 3. When the connecting rod 83 moves, it drives the adjusting rod 84 to move synchronously, so that the adjusting rod 84 contacts the test mold 3 and adjusts the position of the test mold 3. An adjusting rod 84 is positioned between two adjacent sets of threaded posts 71. A limiting sleeve 85 is slidably connected to the adjusting rod 84. A fixing rod 86 is fixedly connected to both sides of the limiting sleeve 85. A fixing sleeve 87 is fixedly connected to the end of the fixing rod 86 away from the limiting sleeve 85. The fixing sleeve 87 is fixedly connected to the outer ring of the threaded post 71. The positions of the limiting sleeve 85, fixing rod 86, and fixing sleeve 87 are fixed, ensuring smooth movement of the adjusting rod 84. A bidirectional threaded rod 88 is rotatably connected to the base 1, rotating in its original position. Two sets of threaded sleeves 89 are threadedly connected to the bidirectional threaded rod 88, with opposite thread directions at both ends. The two sets of threaded sleeves 89 are fixedly connected to two sets of moving plates 82, respectively. Therefore, when the bidirectional threaded rod 88 rotates, it drives the two sets of threaded sleeves 89 to move synchronously in opposite directions, thus causing the two sets of moving plates 82 to move synchronously in opposite directions.

[0035] In this embodiment, the test mold 3 is placed on the first sealing gasket 2 and mortar is poured in. The pressure plate 5 is placed on the test mold 3, while multiple sets of pressure blocks 74 slide on the outside of the threaded column 71. At this time, the bidirectional threaded rod 88 is rotated, which drives the two sets of threaded sleeves 89 to move closer to each other, and drives the moving plate 82 to move closer to each other under the limiting action of the limiting rod 81. The connecting rod 83 drives the adjusting rod 84 to move closer to the test mold 3, pushing the test mold 3 to the center position. Then, the gasket 72 and nut 73 are sequentially put on the threaded column 71, and the six sets of nuts 73 are tightened in sequence, causing the pressure plate 5 to press down, and sealing the test mold 3 through the second sealing gasket 4. At this time, close the second air valve 66 and start the air pump to fill the mold 3 with air through the air inlet pipe 63 and the connecting pipe 61. Observe the air pressure in the mold 3 through the air pressure gauge 62. When the air pressure reaches the specified level, close the air pump and the first air valve 64. At this time, the mold 3 is in a high-pressure environment, so that the mortar is formed under high pressure. After forming, open the second air valve 66 to exhaust the air and test the mortar block after demolding.

[0036] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A mortar test block pressing device, characterized in that, include: Hollow base (1); A first sealing gasket (2) is installed on the top of the base (1), and a test mold (3) is placed on top of the first sealing gasket (2); A pressure plate (5) is placed on top of the test mold (3), and a second sealing gasket (4) is installed at the bottom of the pressure plate (5); An inflation component (6) is installed on the top of the pressure plate (5) for monitoring the pressure in the test mold (3); Multiple sets of fixing components (7) are fixedly connected to the top of the base (1). The fixing components (7) are used to drive the pressure plate (5) to press the test mold (3) tightly to achieve sealing. The positioning mechanism (8) installed on the base (1) is used to position the test mold (3) in the middle position to ensure that the forces applied by the multiple sets of fixing components (7) to the pressure plate (5) are balanced.

2. The mortar test block pressure molding device according to claim 1, characterized in that, The inflation assembly (6) includes a connecting pipe (61) installed on the top of the pressure plate (5). The connecting pipe (61) has a through hole (51) on the pressure plate (5). A pressure gauge (62) is installed on the top of the connecting pipe (61). An air inlet pipe (63) is connected to one side of the connecting pipe (61). An air pump is connected to one end of the air inlet pipe (63). A first air valve (64) is installed on the air inlet pipe (63). An exhaust pipe (65) is connected to the side of the connecting pipe (61) away from the air inlet pipe (63). A second air valve (66) is installed on the exhaust pipe (65).

3. The mortar test block pressure molding device according to claim 2, characterized in that, The second sealing gasket (4) has a clearance hole (41) at the position corresponding to the through hole (51).

4. The mortar test block pressure molding device according to claim 3, characterized in that, The fixing component (7) includes a threaded post (71) fixedly connected to the top of the base (1), a washer (72) is slidably sleeved on the threaded post (71), a nut (73) is provided above the washer (72) and threadedly connected to the threaded post (71), and a pressure block (74) is provided below the washer (72) and slidably engaged with the threaded post (71), and the pressure block (74) is fixedly connected to the side of the pressure plate (5).

5. The mortar test block compression molding device according to claim 4, characterized in that, The pressure block (74) is U-shaped.

6. The mortar test block compression molding device according to claim 5, characterized in that, The positioning mechanism (8) includes multiple sets of limiting rods (81) fixedly connected to the inner wall of the base (1). Two sets of moving plates (82) are slidably connected to the multiple sets of limiting rods (81). The two sets of moving plates (82) are symmetrically arranged on both sides of the test mold (3). Multiple sets of connecting rods (83) are fixedly connected to the top of the moving plates (82). The connecting rods (83) are L-shaped. The connecting rods (83) pass through the base (1) and slide with it. An adjusting rod (84) is fixedly connected to the side of the connecting rod (83) near the test mold (3). The adjusting rod (84) is arranged between two adjacent sets of threaded columns (71).

7. The mortar test block compression molding device according to claim 6, characterized in that, The adjusting rod (84) is slidably connected to a limiting sleeve (85), and a fixing rod (86) is fixedly connected to both sides of the limiting sleeve (85). A fixing sleeve (87) is fixedly connected to one end of the fixing rod (86) away from the limiting sleeve (85), and the fixing sleeve (87) is fixedly connected to the outer ring of the threaded column (71).

8. The mortar test block pressure molding device according to claim 7, characterized in that, The base (1) is rotatably connected to a bidirectional threaded rod (88), and two sets of threaded sleeves (89) are threadedly connected to the bidirectional threaded rod (88). The two ends of the bidirectional threaded rod (88) have opposite thread directions, and the two sets of threaded sleeves (89) are respectively fixedly connected to two sets of movable plates (82).

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