Anti-crack concrete shock resistance experiment device

Abstract

The utility model discloses an anti-crack concrete shock resistance experiment device which comprises a placing plate, the lower portion of the placing plate is fixedly connected with four supporting assemblies, the four supporting assemblies are fixed to the four corners of the lower portion of the placing plate, the upper portion of the placing plate is fixedly provided with a supporting frame, and the upper portion of the supporting frame is fixedly provided with an electric push rod. The output ends of the electric push rods are fixedly connected with impact blocks; the supporting assembly comprises a fixing column, a non-Newtonian fluid containing groove is formed in the upper portion of the fixing column, a lifting column is slidably installed on the upper portion of a non-Newtonian fluid containing groove body of the fixing column, and the non-Newtonian fluid containing groove is in a U shape. The non-Newtonian fluid in the non-Newtonian fluid containing groove can provide stable support for the lifting column and even the containing plate at the moment of impact, concrete can bear effective impact, follow-up stress becomes soft through the characteristics of the non-Newtonian fluid, and vibration force generated by the whole equipment is absorbed for equipment damping operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete, and in particular relates to a crack-resistant concrete impact-resistant experimental device. Background Art

[0002] The impact test of crack-resistant concrete is a method to test the performance of concrete materials when subjected to impact forces. This test is usually used to evaluate the durability and stability of concrete materials under different impact conditions.

[0003] A patent with publication number CN218567122U in the traditional technology discloses a crack-resistant concrete impact-resistant experimental device, including an experimental base frame, a driving frame, and a supporting frame. Shock-absorbing frames are vertically fixed at the four vertical angles of the bottom surface of the experimental base frame, a driving frame is vertically fixed on one side of the top surface of the experimental base frame, a supporting frame located on the other side of the top surface of the experimental base frame is vertically fixed on one side of the driving frame, an impact plate is arranged between the supporting frame and the driving frame, an impact block is fixed at the center of the bottom surface of the impact plate, an experimental placement block is fixed at the center of the top surface of the experimental base frame, a placement groove is provided on the top surface of the experimental placement block, an abutment groove matching the impact block is provided on the inner wall at the center of the placement groove, a block of the crack-resistant concrete impact-resistant experimental device is placed in the placement groove, a transmission bevel gear 1 is coaxially fixed at the rotating shaft of motor 1, a transmission bevel gear 2 located on the inner wall of the driving frame is rotatably arranged on one side of the transmission bevel gear 1, and the transmission bevel gear 1 is transmission-engaged with the transmission bevel gear 2.

[0004] However, there are some problems with traditional technology: the above-mentioned traditional device uses springs as a shock-absorbing means, which provides a certain buffer for the impact of the test block when conducting a top-down impact test, resulting in inaccurate experimental data. Therefore, we propose a crack-resistant concrete impact test device. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a crack-resistant concrete impact resistance test device, which solves the problem that the traditional device uses springs as a shock-absorbing means, provides a certain buffer for the impact of the test block when conducting a top-down impact test, thereby causing the test data to be inaccurate.

[0006] The utility model is implemented as follows: a crack-resistant concrete impact-resistant experimental device comprises a placing plate, a supporting assembly is fixedly connected to the lower part of the placing plate, four supporting assemblies are provided, and the four supporting assemblies are fixed to the four corners of the lower part of the placing plate, a supporting frame is fixedly installed on the upper part of the placing plate, an electric push rod is fixedly installed on the upper part of the supporting frame, and an impact block is fixedly connected to the output end of the electric push rod; the supporting assembly comprises a fixed column, a non-Newtonian fluid placing groove is opened on the upper part of the fixed column, a lifting column is slidably installed on the upper part of the main body of the non-Newtonian fluid placing groove of the fixed column, and the non-Newtonian fluid placing groove is U-shaped.

[0007] As a preferred embodiment of the utility model, an air cavity is further provided on the outside of the fixing column, and an air hole for communication is provided between the non-Newtonian fluid placement groove of the fixing column and the air cavity.

[0008] As a preferred embodiment of the utility model, a piston plate is adjustably installed inside the air cavity, and the piston plate is consistent with the air cavity.

[0009] As a preferred embodiment of the utility model, the piston plate is slidably mounted in the air cavity, a base plate is also slidably mounted inside the air cavity, and an upper portion of the base plate is connected to the piston plate via a spring.

[0010] As a preferred embodiment of the utility model, a screw rod is rotatably installed at the lower part of one side of the fixed column, the lower part of the screw rod passes through the outer wall of the fixed column and extends to the outside where a second turntable is fixed, and the outside of the screw rod body is screwed to the base plate.

[0011] As a preferred embodiment of the utility model, a screw is threadedly connected to the lower portion of the fixed column body, a first turntable is fixedly connected to the lower portion of the screw, and a support plate is rotatably mounted on the lower portion of the first turntable.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model divides the support assembly into a fixed column and a lifting column, and the fixed column is provided with a U-shaped non-Newtonian fluid placement groove. When installing, the lifting column body is inserted into the non-Newtonian fluid placement groove, and the non-Newtonian fluid is placed inside the non-Newtonian fluid placement groove, so that the non-Newtonian fluid in the non-Newtonian fluid placement groove can provide stable support for the lifting column and even the placement plate at the moment of impact, so that the concrete can withstand effective impact, and the subsequent stress is softened by the characteristics of the non-Newtonian fluid itself, absorbing the vibration force generated by the entire equipment to perform equipment shock absorption operation;

[0014] 2. In order to leave space for the non-Newtonian fluid to move and to support the lifting column in the initial state, the utility model opens an air cavity on one side of the fixed column, and changes the gas density between the air cavity and the non-Newtonian fluid placement groove by changing the position of the piston plate. The air holes are used to increase damping. When the lifting column descends, the non-Newtonian fluid first hardens for support, then softens and squeezes the gas for shock-absorbing operation. The user can change the initial position of the base plate connecting the piston plate by rotating the second turntable, so that the user can adjust the initial air pressure. The spring arranged between the base plate and the piston plate cooperates with the gas to further enhance the overall shock-absorbing effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the support assembly provided by an embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the lifting column structure provided by an embodiment of the utility model;

[0018] Figure 4 The utility model embodiment provides Figure 3 Enlarged structural diagram at A in the middle.

[0019] In the figure: 1. Placement plate; 2. Support assembly; 3. Support frame; 4. Electric push rod; 5. Impact block;

[0020] 101, fixed column; 102, lifting column; 103, support plate; 104, first rotating plate; 105, screw rod;

[0021] 1011. Non-Newtonian fluid placement groove; 1012. Air cavity; 1013. Air hole; 1014. Piston plate; 1015. Screw rod; 1016. Second turntable; 1017. Base plate; 1018. Spring. DETAILED DESCRIPTION

[0022] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0023] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0024] like Figures 1 to 4 As shown, an anti-crack concrete impact test device provided by the embodiment of the utility model comprises a placement plate 1, a support assembly 2 is fixedly connected to the lower part of the placement plate 1, and four support assemblies 2 are provided, and the four support assemblies 2 are fixed at the four corners of the lower part of the placement plate 1. placeA support frame 3 is fixedly installed on the upper part of the plate, an electric push rod 4 is fixedly installed on the upper part of the support frame 3, and an impact block 5 is fixedly connected to the output end of the electric push rod 4; the support assembly 2 includes a fixed column 101, a non-Newtonian fluid placement groove 1011 is opened on the upper part of the fixed column 101, and a lifting column 102 is slidably installed on the upper part of the main body of the non-Newtonian fluid placement groove 1011 of the fixed column 101, and the non-Newtonian fluid placement groove 1011 is U-shaped.

[0025] The above-mentioned anti-crack concrete impact test device stably supports the placement plate 1 through four support components 2, and installs an electric push rod 4 as a driving unit of the impact block 5 on the upper part of the placement plate 1 through a support frame 3. When conducting the anti-crack concrete impact test, the concrete to be tested is first placed in the placement groove of the placement plate 1, and then the electric push rod 4 is driven to pull up the impact block 5 fixed at the output end to rise and descend for the impact test.

[0026] In order to solve the influence of the buffering factors on the impact test data described in the background technology, the support assembly 2 is divided into a fixed column 101 and a lifting column 102, and the fixed column 101 is provided with a U-shaped non-Newtonian fluid placement groove 1011. During installation, the main body of the lifting column 102 is inserted into the non-Newtonian fluid placement groove 1011, and the non-Newtonian fluid is placed inside the non-Newtonian fluid placement groove 1011, so that the non-Newtonian fluid in the non-Newtonian fluid placement groove 1011 can provide stable support for the lifting column 102 and even the placement plate 1 at the moment of impact, so that the concrete can withstand effective impact, and the subsequent stress is softened by the characteristics of the non-Newtonian fluid itself, absorbing the vibration force generated by the entire equipment to perform equipment shock absorption operation.

[0027] In this embodiment, an air cavity 1012 is also provided on the outside of the fixed column 101, and an air hole 1013 for communication is provided between the non-Newtonian fluid placement groove 1011 of the fixed column 101 and the air cavity 1012. A piston plate 1014 is adjustable inside the air cavity 1012, and the piston plate 1014 is consistent with the air cavity 1012. The piston plate 1014 is slidably installed in the air cavity 1012, and a base plate 1017 is also slidably installed inside the air cavity 1012, and the upper part of the base plate 1017 is connected to the piston plate 1014 through a spring 1018. A screw rod 1015 is rotatably installed at the lower part of one side of the fixed column 101, and the lower part of the screw rod 1015 passes through the outer wall of the fixed column 101 and extends to the outside where a second rotating disk 1016 is fixed, and the outer part of the main body of the screw rod 1015 is screwed to the base plate 1017.

[0028] In order to leave space for the non-Newtonian fluid to move and to support the lifting column 102 in the initial state, an air cavity 1012 is opened on one side of the fixed column 101, and the gas density of the gas between the air cavity 1012 and the non-Newtonian fluid placement groove 1011 is changed by changing the position of the piston plate 1014. The air hole 1013 is used to increase damping. When the lifting column 102 descends, the non-Newtonian fluid first hardens for support, and then softens and squeezes the gas for shock absorption. The user can change the initial position of the base plate 1017 connecting the piston plate 1014 by rotating the second turntable 1016, so that the user can adjust the initial air pressure, and the spring 1018 arranged between the base plate 1017 and the piston plate 1014 cooperates with the gas to further enhance the overall shock absorption effect of the equipment.

[0029] In this embodiment, a screw rod 105 is screwed to the lower part of the main body of the fixed column 101 , a first rotating disk 104 is fixedly connected to the lower part of the screw rod 105 , and a support disk 103 is rotatably mounted to the lower part of the first rotating disk 104 .

[0030] During installation, the user can control the rotation of the screw rod 105 by turning the first turntable 104 , so that the user can adjust the first turntables 104 of the four support assemblies 2 to achieve a leveling effect on the placement plate 1 .

[0031] The working principle of this utility model:

[0032] When in use, the support assembly 2 is divided into a fixed column 101 and a lifting column 102, and the fixed column 101 is provided with a U-shaped non-Newtonian fluid placement groove 1011. When installed, the main body of the lifting column 102 is inserted into the non-Newtonian fluid placement groove 1011, and the non-Newtonian fluid is placed inside the non-Newtonian fluid placement groove 1011, so that the non-Newtonian fluid in the non-Newtonian fluid placement groove 1011 can provide stable support for the lifting column 102 and even the placement plate 1 at the moment of impact, so that the concrete can withstand effective impact, and the subsequent stress is softened by the characteristics of the non-Newtonian fluid itself, absorbing the vibration force generated by the entire equipment to perform equipment shock absorption operation, in order to leave space for the non-Newtonian fluid to move and to be able to lift the lifting column 10 2 is supported in the initial state, an air cavity 1012 is opened on one side of the fixed column 101, and the gas density of the gas between the air cavity 1012 and the non-Newtonian fluid placement groove 1011 is changed by changing the position of the piston plate 1014. The air hole 1013 is used to increase damping. When the lifting column 102 descends, the non-Newtonian fluid first hardens for support, and then softens and squeezes the gas for shock absorption operation. The user can change the initial position of the base plate 1017 connected to the piston plate 1014 by rotating the second turntable 1016, so that the user can adjust the initial air pressure, and the spring 1018 arranged between the base plate 1017 and the piston plate 1014 cooperates with the gas to further enhance the overall shock absorption effect of the device.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although the 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 crack-resistant concrete impact test device, comprising a placement plate (1), characterized in that: The lower part of the placement plate (1) is fixedly connected to a support assembly (2), and the support assemblies (2) are provided with four, and the four support assemblies (2) are fixed to the four corners of the lower part of the placement plate (1); the upper part of the placement plate is fixedly installed with a support frame (3), and the upper part of the support frame (3) is fixedly installed with an electric push rod (4), and the output end of the electric push rod (4) is fixedly connected with a collision block (5); the support assembly (2) comprises a fixed column (101), and the upper part of the fixed column (101) is provided with a non-Newtonian fluid placement groove (1011), and the upper part of the main body of the non-Newtonian fluid placement groove (1011) of the fixed column (101) is slidably installed with a lifting column (102), and the non-Newtonian fluid placement groove (1011) is arranged in a U shape.

2. A crack-resistant concrete impact test device as claimed in claim 1, characterized in that: An air cavity (1012) is also provided on the outside of the fixing column (101), and an air hole (1013) for communication is provided between the non-Newtonian fluid placement groove (1011) of the fixing column (101) and the air cavity (1012).

3. A crack-resistant concrete impact test device as claimed in claim 2, characterized in that: A piston plate (1014) is adjustably installed inside the air cavity (1012), and the piston plate (1014) is consistent with the air cavity (1012).

4. A crack-resistant concrete impact test device as claimed in claim 3, characterized in that: The piston plate (1014) is slidably mounted in the air cavity (1012), and a base plate (1017) is also slidably mounted inside the air cavity (1012), and the upper part of the base plate (1017) is connected to the piston plate (1014) via a spring (1018).

5. A crack-resistant concrete impact test device as claimed in claim 4, characterized in that: A screw rod (1015) is rotatably mounted on the lower part of one side of the fixed column (101), and the lower part of the screw rod (1015) passes through the outer wall of the fixed column (101) and extends to the outside where a second rotating disk (1016) is fixed, and the outer part of the main body of the screw rod (1015) is screwed to the base plate (1017).

6. The crack-resistant concrete impact test device according to claim 1, characterized in that: A screw rod (105) is screwed to the lower part of the main body of the fixed column (101), a first rotating disk (104) is fixedly connected to the lower part of the screw rod (105), and a supporting disk (103) is rotatably mounted to the lower part of the first rotating disk (104).

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