Rapid determination device for concrete strength of civil air defense engineering

Abstract

The utility model discloses a civil air defense engineering concrete strength rapid measuring device which comprises a supporting table and a hydraulic cylinder, a pressure sensor is fixedly installed at the output end of the hydraulic cylinder, a detection pressing block is fixedly installed at the bottom of the pressure sensor, and a PLC is fixedly installed at the right end of the front surface of the supporting table. A stepping motor is fixedly installed at the upper end of the left side of the outer surface of the supporting table. Through the arrangement of the supporting table, a concrete sample for strength detection required by civil air defense engineering can be supported, and through the arrangement of the hydraulic cylinder, the pressure sensor and the detection pressing block, personnel can conveniently and rapidly measure the compressive strength of civil air defense engineering concrete; meanwhile, through the arrangement of a stepping motor, a two-way screw rod, a moving plate and a protective cover, the periphery of the concrete sample can be effectively and safely protected in the measuring operation process, and concrete chippings are prevented from splashing to the periphery and hurting personnel.

Description

A rapid strength testing device for concrete in civil defense engineering Technical Field

[0001] This utility model relates to the field of concrete strength testing technology for civil defense projects, specifically a rapid strength testing device for concrete in civil defense projects. Background Technology

[0002] As underground structures that serve important functions such as providing shelter for personnel and materials, command and control of civil air defense, and medical rescue during wartime, the strength of the concrete structure of civil air defense projects is directly related to the safety and reliability of the project. During the construction of civil air defense projects, it is necessary to measure the concrete strength in a timely and accurate manner to ensure that the project quality meets relevant standards and requirements.

[0003] However, during the compressive strength testing of core samples taken from concrete in civil defense projects, the lack of effective safety protection structures means that debris is easily scattered in all directions when the concrete sample is under pressure, which can adversely affect the safety of surrounding workers. Summary of the Invention

[0004] The purpose of this invention is to provide a rapid strength testing device for concrete in civil defense projects, which has the advantages of being able to test the compressive strength of concrete samples in civil defense projects while effectively improving the safety of personnel operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid concrete strength testing device for civil defense engineering, comprising a support platform and a hydraulic cylinder. A pressure sensor is fixedly installed at the output end of the hydraulic cylinder, and a detection block is fixedly installed at the bottom of the pressure sensor. A PLC controller is fixedly installed at the right end of the front surface of the support platform. A stepper motor is fixedly installed at the upper end of the left side of the outer surface of the support platform. A bidirectional screw is fixedly installed at the output end of the stepper motor. Both ends of the bidirectional screw are threadedly connected to a moving plate. A protective cover is fixedly connected to the top of the moving plate. A first bevel gear is fixedly installed at the middle end of the bidirectional screw. An adjusting screw is movably connected to the upper end of the inner cavity of the support platform through a bearing. A second bevel gear is fixedly installed on the front surface of the adjusting screw, and the second bevel gear meshes with the first bevel gear. A moving frame is threadedly connected to the surface of the adjusting screw, and a U-shaped protective frame is fixedly connected to the top of the moving frame.

[0006] As a preferred embodiment, a fixing block is fixedly connected to the middle of the top of the outer surface of the support platform. There are two fixing blocks, and a clamping screw is threadedly connected to the middle of the fixing block. The surface of the clamping screw is movably connected to an arc-shaped clamping plate through a bearing.

[0007] As a preferred embodiment, a fixing frame is fixedly installed at the middle end of the hydraulic cylinder, the bottom of the fixing frame is fixedly connected to the top of the outer surface of the support platform, and guide vertical rods are slidably connected to both ends of the top of the fixing frame. The bottom of the guide vertical rods is fixedly connected to the top of the detection pressure block, and a receiving hole is opened at the upper end of the fixing frame. The surface of the U-shaped protective frame is slidably connected to the surface of the receiving hole.

[0008] As a preferred embodiment, both ends of the top of the support platform are fixedly connected to guide slide rods, and the upper end of the movable plate is slidably connected to the surface of the guide slide rods.

[0009] As a preferred embodiment, a support plate is fixedly connected to the top of the inner cavity of the support platform, the middle end of the support plate is movably connected to the surface of the adjusting screw through a bearing, a support slide rod is fixedly connected between the lower end of the back of the support plate and the upper end of the inner cavity of the support platform, and the lower end of the movable frame is slidably connected to the surface of the support slide rod.

[0010] As a preferred embodiment, a maintenance door is movably connected to the middle of the front surface of the support platform via a hinge, and rubber supports are fixedly connected to the bottom of the outer surface of the support platform around its perimeter.

[0011] As a preferred embodiment, the right side of the bidirectional screw is movably connected to the right side of the inner cavity of the support platform via a bearing, and the bottom of the protective cover is slidably connected to the top of the outer surface of the support platform.

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

[0013] 1. This utility model, through the setting of a support platform, can support concrete samples required for strength testing in civil defense projects. The hydraulic cylinder, pressure sensor, and testing block facilitate rapid determination of the compressive strength of the concrete in civil defense projects. Simultaneously, the stepper motor, bidirectional screw, moving plate, and protective cover provide effective safety protection around the concrete sample during the testing process, preventing concrete debris from splashing and injuring personnel. Furthermore, the coordinated action of the first bevel gear, second bevel gear, adjusting screw, moving frame, and U-shaped protective frame ensures that after the testing operation, the U-shaped protective frame blocks the bottom of the testing block, reducing the likelihood of injury caused by the hydraulic cylinder rapidly moving the testing block downwards due to malfunction or misoperation during cleanup operations. This further improves the safety of personnel operation.

[0014] 2. This utility model, through the setting of a fixing block, clamping screw and arc-shaped clamping plate, facilitates personnel to clamp and fix the lower end of the concrete sample, avoiding the concrete sample from shifting during the test. The setting of the fixing frame achieves the purpose of supporting the hydraulic cylinder. The setting of the guide vertical rod achieves the purpose of guiding the test block, preventing the test block from tilting during the movement. The setting of the receiving hole achieves the purpose of accommodating the U-shaped protective frame.

[0015] 3. This utility model achieves the purpose of guiding the moving plate by setting the guide slide rod, thus preventing the moving plate from tilting due to force. The purpose of supporting the upright plate is to support the adjusting screw, thus preventing the adjusting screw from tilting due to force. The purpose of guiding the moving frame is achieved by setting the support slide rod. The purpose of maintaining the frame is to facilitate personnel to perform regular maintenance on the internal components of the support platform. Attached Figure Description

[0016] Figure 1 is a perspective view of this utility model;

[0017] Figure 2 is a schematic diagram of the rear structure of this utility model;

[0018] Figure 3 is a schematic cross-sectional view of the support platform of this utility model from the front.

[0019] Figure 4 is a schematic diagram of the bidirectional screw structure of this utility model.

[0020] In the diagram: 1. Support platform; 2. Stepper motor; 3. Guide slide rod; 4. Moving plate; 5. Protective cover; 6. Fixing frame; 7. Receiving hole; 8. U-shaped protective frame; 9. Hydraulic cylinder; 10. Guide vertical rod; 11. Pressure sensor; 12. Detection block; 13. PLC controller; 14. Fixing block; 15. Maintenance door; 16. Moving frame; 17. Bidirectional screw; 18. First bevel gear; 19. Support plate; 20. Support slide rod; 21. Adjusting screw; 22. Second bevel gear. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0023] Example 1:

[0024] Please refer to Figures 1-4. This utility model provides a rapid concrete strength testing device for civil defense engineering, including a support platform 1 and a hydraulic cylinder 9. A pressure sensor 11 is fixedly installed at the output end of the hydraulic cylinder 9, and a detection block 12 is fixedly installed at the bottom of the pressure sensor 11. A PLC controller 13 is fixedly installed at the right end of the front surface of the support platform 1. A stepper motor 2 is fixedly installed at the upper end of the left side of the outer surface of the support platform 1. A bidirectional screw 17 is fixedly installed at the output end of the stepper motor 2. Both ends of the bidirectional screw 17 are threadedly connected to a moving plate 4. A protective cover 5 is fixedly connected to the top of the moving plate 4. A first bevel gear 18 is fixedly installed at the middle end of the bidirectional screw 17. An adjusting screw 21 is movably connected to the upper end of the inner cavity of the support platform 1 through a bearing. A second bevel gear 22 is fixedly installed on the front surface of the adjusting screw 21. The second bevel gear 22 meshes with the first bevel gear 18. A moving frame 16 is threadedly connected to the surface of the adjusting screw 21. A U-shaped protective frame 8 is fixedly connected to the top of the moving frame 16.

[0025] In this technical solution, the support platform 1 supports the concrete sample for strength testing required for civil defense projects. The hydraulic cylinder 9, pressure sensor 11, and testing block 12 facilitate rapid measurement of the compressive strength of the concrete in civil defense projects. Simultaneously, the stepper motor 2, bidirectional screw 17, moving plate 4, and protective cover 5 provide effective safety protection around the concrete sample during the testing process, preventing concrete debris from splashing and injuring personnel. Furthermore, the coordinated action of the first bevel gear 18, second bevel gear 22, adjusting screw 21, moving frame 16, and U-shaped protective frame 8 ensures that after the testing operation, the U-shaped protective frame 8 blocks and protects the area below the testing block 12. This reduces the likelihood of the hydraulic cylinder 9 pushing the testing block 12 downwards rapidly due to malfunction or misoperation during cleaning operations, potentially causing injury to personnel. This further improves the safety of personnel operation.

[0026] Example 2:

[0027] Based on Embodiment 1, as shown in Figures 1 and 2, this utility model discloses a fixing block 14 fixedly connected to the middle of the top of the outer surface of the support platform 1. There are two fixing blocks 14. The middle of the fixing block 14 is threadedly connected to a clamping screw, and the surface of the clamping screw is movably connected to an arc-shaped clamping plate through a bearing. The middle of the hydraulic cylinder 9 is fixedly installed with a fixing frame 6. The bottom of the fixing frame 6 is fixedly connected to the top of the outer surface of the support platform 1. Both ends of the top of the fixing frame 6 are slidably connected to guide vertical rods 10. The bottom of the guide vertical rods 10 is fixedly connected to the top of the detection pressure block 12. The upper end of the fixing frame 6 is provided with a receiving hole 7, and the surface of the U-shaped protective frame 8 is slidably connected to the surface of the receiving hole 7.

[0028] In this technical solution, the setting of the fixing block 14, clamping screw and arc-shaped clamping plate makes it convenient for personnel to clamp and fix the lower end of the concrete sample, so as to avoid the concrete sample shifting during the test. The setting of the fixing frame 6 achieves the purpose of supporting the hydraulic cylinder 9. The setting of the guide vertical rod 10 achieves the purpose of guiding the test pressure block 12, so as to prevent the test pressure block 12 from tilting during the movement. The setting of the receiving hole 7 achieves the purpose of accommodating the U-shaped protective frame 8.

[0029] Example 3:

[0030] Based on Embodiment 1, as shown in Figures 1-4, this utility model discloses that both ends of the top of the support platform 1 are fixedly connected to guide slide rods 3, the upper end of the moving plate 4 is slidably connected to the surface of the guide slide rods 3, the top of the inner cavity of the support platform 1 is fixedly connected to a support plate 19, the middle end of the support plate 19 is movably connected to the surface of the adjusting screw 21 through a bearing, the lower end of the back of the support plate 19 is fixedly connected to the upper end of the inner cavity of the support platform 1, the lower end of the moving frame 16 is slidably connected to the surface of the support slide rod 20, the middle end of the front surface of the support platform 1 is movably connected to a maintenance door 15 through a hinge, rubber supports are fixedly connected to all four sides of the bottom of the outer surface of the support platform 1, the right side of the bidirectional screw 17 is movably connected to the right side of the inner cavity of the support platform 1 through a bearing, and the bottom of the protective cover 5 is slidably connected to the top of the outer surface of the support platform 1.

[0031] In this technical solution, the guide slide bar 3 is used to guide the moving plate 4 and prevent the moving plate 4 from tilting due to force. The support plate 19 is used to support the adjusting screw 21 and prevent the adjusting screw 21 from tilting due to force. The support slide bar 20 is used to guide the moving frame 16. The maintenance door 15 is used to facilitate personnel to regularly maintain the components inside the support platform 1.

[0032] The working principle of this utility model is as follows: A concrete sample obtained from core drilling in a civil defense project is placed on top of the support platform 1 and below the testing block 12. The PLC controller 13 then starts the stepper motor 2, which drives the bidirectional screw 17 and the first bevel gear 18 to rotate. The rotation of the bidirectional screw 17 causes the two sets of moving plates 4 and protective covers 5 to move towards each other, allowing the two sets of protective covers 5 to contact each other. This provides safety protection around the concrete sample during subsequent testing, preventing concrete debris from splashing and causing injury to personnel. Furthermore, the rotation of the first bevel gear 18... Simultaneously, it can drive the second bevel gear 22 and the adjusting screw 21 to rotate. The rotation of the adjusting screw 21 drives the moving frame 16 and the U-shaped protective frame 8 to move backward, so that the U-shaped protective frame 8 can disengage from directly below the detection block 12. Then, by controlling the extension of the hydraulic cylinder 9, the pressure sensor 11 and the detection block 12 are pushed downward (it should be noted that the hydraulic cylinder 9 is existing technology, and during operation, it can work in conjunction with many components such as an external hydraulic pump, reversing valve, oil tank, and high-pressure oil pipe). This allows the detection block 12 to contact and apply pressure to the top of the concrete sample, while the pressure sensor... Under the action of 11, the pressure applied by the detection block 12 to the concrete sample can be monitored and transmitted to the PLC controller 13 for display on the screen, thereby achieving the effect of rapid determination of the compressive strength of the concrete in civil defense projects. After the measurement is completed, the hydraulic cylinder 9 is operated to retract, thereby moving the pressure sensor 11 and the detection block 12 upward to reset. At the same time, the stepper motor 2 is started to drive the bidirectional screw 17 and the first bevel gear 18 to rotate in the other direction, thereby moving the two sets of moving plates 4 and the protective cover 5 to the side away from each other, thus facilitating personnel to move the support platform 1. While the concrete sample at the top is being cleaned, the first bevel gear 18 rotates, driving the second bevel gear 22 and the adjusting screw 21 to rotate. The rotation of the adjusting screw 21 drives the moving frame 16 and the U-shaped protective frame 8 to move forward until the U-shaped protective frame 8 is positioned below the detection block 12. This effectively blocks and protects the area below the detection block 12, preventing personnel from being injured by the hydraulic cylinder 9 pushing the detection block 12 downwards rapidly due to malfunction or misoperation during the cleaning or replacement of the concrete sample. This greatly improves the safety of personnel operation.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A rapid strength testing device for concrete in civil defense engineering, comprising a support platform (1) and a hydraulic cylinder (9), characterized in that: A pressure sensor (11) is fixedly installed at the output end of the hydraulic cylinder (9). A detection block (12) is fixedly installed at the bottom of the pressure sensor (11). A PLC controller (13) is fixedly installed at the right end of the front surface of the support platform (1). A stepper motor (2) is fixedly installed at the upper end of the left side of the outer surface of the support platform (1). A bidirectional screw (17) is fixedly installed at the output end of the stepper motor (2). Both ends of the bidirectional screw (17) are threadedly connected to a moving plate (4). The top of the moving plate (4) is fixedly... A protective cover (5) is fixedly connected to the support platform (1). A first bevel gear (18) is fixedly installed at the middle end of the bidirectional screw (17). An adjusting screw (21) is movably connected to the upper end of the inner cavity of the support platform (1) through a bearing. A second bevel gear (22) is fixedly installed on the front surface of the adjusting screw (21). The second bevel gear (22) meshes with the first bevel gear (18). A movable frame (16) is threadedly connected to the surface of the adjusting screw (21). A U-shaped protective frame (8) is fixedly connected to the top of the movable frame (16).

2. The device for rapid determination of the strength of concrete for civil defense engineering according to claim 1, characterized in that A fixing block (14) is fixedly connected to the middle of the top of the outer surface of the support platform (1). There are two fixing blocks (14). The middle of the fixing block (14) is threadedly connected to a clamping screw, and the surface of the clamping screw is movably connected to an arc-shaped clamping plate through a bearing.

3. The device for rapid determination of the strength of concrete for civil defense engineering according to claim 1, characterized in that A fixed frame (6) is fixedly installed at the middle end of the hydraulic cylinder (9). The bottom of the fixed frame (6) is fixedly connected to the top of the outer surface of the support platform (1). Guide rods (10) are slidably connected to both ends of the top of the fixed frame (6). The bottom of the guide rods (10) is fixedly connected to the top of the detection block (12). A receiving hole (7) is opened at the upper end of the fixed frame (6). The surface of the U-shaped protective frame (8) is slidably connected to the surface of the receiving hole (7).

4. The device for rapid determination of the strength of concrete for civil defense engineering according to claim 1, characterized in that The support platform (1) has guide slide rods (3) fixedly connected to both ends of its top, and the upper end of the moving plate (4) is slidably connected to the surface of the guide slide rods (3).

5. The rapid strength testing device for concrete in civil defense engineering according to claim 1, characterized in that: A support plate (19) is fixedly connected to the top of the inner cavity of the support platform (1). The middle end of the support plate (19) is movably connected to the surface of the adjusting screw (21) through a bearing. A support slide rod (20) is fixedly connected between the lower end of the back of the support plate (19) and the upper end of the inner cavity of the support platform (1). The lower end of the moving frame (16) is slidably connected to the surface of the support slide rod (20).

6. The device for rapid determination of the strength of the concrete of the civil defense construction according to claim 1, characterized in that The support platform (1) has a maintenance door (15) connected to the middle of its front surface via a hinge, and rubber supports are fixedly connected to the bottom of the outer surface of the support platform (1) around its perimeter.

7. The device for rapid determination of the strength of the concrete of the civil defense construction according to claim 1, characterized by the fact that The right side of the bidirectional screw (17) is movably connected to the right side of the inner cavity of the support platform (1) via a bearing, and the bottom of the protective cover (5) is slidably connected to the top of the outer surface of the support platform (1).

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