An underground building concrete structure weather resistance detection device

Abstract

This utility model relates to the field of concrete testing technology and discloses a weathering resistance testing device for underground building concrete structures. The device includes a testing platform, a support frame fixedly connected to one end of the top of the testing platform, and a testing mechanism mounted on the top of the support frame. A first rectangular slot is formed in the middle of the top of the testing platform, and a lead screw is rotatably connected between the two ends of the bottom of the first rectangular slot. A triangular block is fixedly connected to the top of the side of the first rectangular slot away from the support frame. A threaded block is screwed into the lead screw, and a lead screw nut adapted to the lead screw is fixedly fitted at the bottom of the threaded block. A movable platform is fixedly connected to the top of the threaded block, and a vertical hole is formed on the side of the movable platform closest to the support frame. This utility model achieves automated cleaning of concrete debris, reduces manual labor intensity, and shortens the testing process time, significantly improving the overall efficiency and standardization of testing work, and providing strong support for the rapid and accurate implementation of weathering resistance testing of underground building concrete structures.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology, and in particular to a weather resistance testing device for underground building concrete structures. Background Technology

[0002] With the continuous development of urban underground space, the application of concrete structures in underground buildings such as subway tunnels, underground utility tunnels, and civil defense projects is becoming increasingly widespread. These structures are in a complex underground environment for a long time, not only bearing huge building pressure, but also facing multiple effects such as groundwater infiltration, chemical corrosion, and temperature and humidity changes. The weather resistance of concrete structures directly affects their service life and safety. Once the weather resistance is insufficient, the concrete will have problems such as cracks, reduced strength, and steel corrosion, which will lead to serious consequences such as structural instability and leakage, threatening the normal use of underground space and the safety of people and property.

[0003] In existing technologies, when testing the strength of concrete, the existing devices generally place the concrete block on the testing platform, and use a hydraulic system to drive the pressure block down to compress the concrete block. Pressure sensors record the pressure data until the concrete block breaks, thereby realizing the strength test of the concrete block. However, after the test, the broken concrete blocks are scattered on the work platform. Due to the lack of a cleaning mechanism, the concrete debris needs to be manually cleaned up, which increases the labor intensity. To address this, a weathering resistance testing device for underground building concrete structures has been designed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a weather resistance testing device for underground building concrete structures.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A weathering resistance testing device for underground concrete structures includes a testing platform. A support frame is fixedly connected to one end of the top of the testing platform, and a testing mechanism is mounted on the top of the support frame. A first rectangular slot is formed in the middle of the top of the testing platform, and a lead screw is rotatably connected between the two ends of the bottom of the first rectangular slot. A triangular block is fixedly connected to the top of the side of the first rectangular slot away from the support frame. A threaded block is screwed into the lead screw, and a lead screw nut adapted to the lead screw is fixedly fitted at the bottom of the threaded block. A movable platform is fixedly connected to the top of the threaded block, and a vertical hole is formed on the side of the movable platform closest to the support frame. A fixing plate is fixedly connected to the bottom and near the top of the vertical hole. The same vertical rod is slidably fitted onto one end of the two fixing plates near the triangular block. Both fixing plates have square holes that match the vertical rod. The bottom of the vertical rod has an inclined surface that matches the triangular block. A fixing ring is fixedly fitted onto the vertical rod at the two fixing plates. A spring is fitted onto the vertical rod between the fixing ring and the top fixing plate. Through the cooperation of the triangular block, the vertical rod, and the spring, when the moving platform approaches the collection frame, the top plate automatically tilts, pouring the debris into the collection frame for collection, thus avoiding manual cleaning.

[0007] Preferably, sliding rods are fixedly connected to both sides of the top of the vertical rod, and a top plate is rotatably connected to the top of the moving platform near the triangular block. Two strip frames are fixedly connected to the bottom of the top plate near the vertical hole. Each sliding rod is slidably connected to the adjacent strip frame. The setting of the strip frames ensures that the top plate will not conflict with the movement trajectory of the sliding rod when it is tilted.

[0008] Preferably, vertical slots are provided at both ends of both sides of the moving platform. A positioning rod is fixedly connected between the top and bottom of each vertical slot. A protrusion is slidably fitted on the circumferential surface of each positioning rod. A circular hole adapted to the positioning rod is provided on each protrusion. The same protective frame is fixedly connected to the outside of the four protrusions. A protruding rod is fixedly connected to the bottom of both sides of the outer wall of the protective frame. The cooperation between the protrusions and the positioning rods makes the protective frame move stably when it is raised and lowered.

[0009] Preferably, the top of the testing platform is fixedly connected to side plates on both sides of the moving platform. Each side plate has an irregularly shaped hole, and each protruding rod is slidably connected in the irregularly shaped hole. The irregularly shaped hole includes an oblique hole and a horizontal hole, and the bottom of the oblique hole is connected to the horizontal hole. The cooperation between the protruding rod and the irregularly shaped hole allows the protective frame to automatically descend when the top plate needs to be loaded and unloaded, and to automatically rise during testing, so that the broken debris will not be splashed everywhere.

[0010] Preferably, a servo motor is fixedly connected to one end of the testing platform near the support frame, and the output end of the servo motor passes through the testing platform and is fixedly connected to one end of the lead screw. The position control of the moving platform is achieved through the setting of the servo motor.

[0011] Preferably, a second rectangular groove is provided on both sides of the top of the detection table near the moving table. A slide rod is fixedly connected between the two ends of each second rectangular groove. A slider is slidably fitted on the circumferential surface of each slide rod. A circular hole adapted to the slide rod is provided on each slider. Both sliders are fixedly connected to the bottom of the moving table.

[0012] Preferably, the detection mechanism includes a hydraulic cylinder fixedly connected to the middle of the top of the support frame. The bottom output end of the hydraulic cylinder is fixedly connected to a disc through the support frame, and a pressure sensor is fixedly connected to the bottom of the disc. A pressure plate is fixedly connected to the bottom of the pressure sensor.

[0013] Preferably, a control panel is provided on one side of the top of the testing platform, and the control panel is electrically connected to the hydraulic cylinder, the pressure sensor and the servo motor respectively. Two fixing strips are fixedly connected to the end of the testing platform away from the support frame. A sliding groove is opened on the side of the two fixing strips that are close to each other, and the same collection frame is slidably connected in the two sliding grooves.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. By employing techniques such as vertical rods, triangular blocks, lead screws, top plate sliding rods, and strip frames, after the test is completed, the servo motor, through the rotation of the lead screw, drives the moving stage closer to the collection frame. When the bottom of the vertical rod contacts the triangular block, the vertical rod automatically rises, causing the top plate to gradually tilt and dump the concrete debris from the top of the top plate into the collection frame. This improves the efficiency of concrete weather resistance testing and effectively solves the problem of manual cleaning of debris mentioned in the background technology. It thus achieves automated cleaning of concrete debris, reduces labor intensity, and shortens the testing process time, significantly improving the overall efficiency and standardization of the testing work. This provides a strong guarantee for the rapid and accurate implementation of weather resistance testing of underground building concrete structures.

[0016] 2. By setting up protective frame protrusions, irregular holes, and positioning rods, the protective frame is positioned at its highest point during the inspection process. The broken concrete debris is limited by the protective frame and stays only at the top of the top plate. When loading or unloading, the protective frame automatically descends, facilitating manual loading and debris handling, and improving the safety protection and efficient debris removal of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the weather resistance testing device for underground building concrete structures proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the testing mechanism of a weather resistance testing device for underground building concrete structures proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the top of the testing platform of the weather resistance testing device for underground building concrete structures proposed in this utility model.

[0020] Figure 4 This is a partial structural diagram of the top of the testing platform of a weather resistance testing device for underground building concrete structures proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the disassembled mobile platform of the weather resistance testing device for underground concrete structures proposed in this utility model.

[0022] Figure 6 This is a cross-sectional structural schematic diagram of a mobile platform for a weather resistance testing device for underground concrete structures proposed in this utility model.

[0023] Figure 7 This utility model proposes a weathering resistance testing device for underground building concrete structures. Figure 6 An enlarged structural diagram of point A.

[0024] In the diagram: 1. Testing table; 101. Control panel; 102. Side plate; 103. Irregular hole; 104. First rectangular slot; 105. Second rectangular slot; 106. Slide bar; 107. Slider; 2. Support frame; 3. Testing mechanism; 301. Hydraulic cylinder; 302. Disc; 303. Pressure sensor; 304. Pressure plate; 4. Fixing strip; 401. Collection frame; 5. Servo motor; 501. Lead screw; 502. Triangular block; 6. Moving stage; 601. Vertical slot; 602. Positioning rod; 603. Screw block; 604. Vertical hole; 605. Fixing plate; 606. Vertical rod; 607. Fixing ring; 608. Spring; 609. Sliding rod; 7. Protective frame; 701. Protrusion; 702. Protrusion rod; 8. Top plate; 801. Strip frame. Detailed Implementation

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

[0026] Reference Figures 1-7A weathering resistance testing device for underground concrete structures includes a testing platform 1. A support frame 2 is fixedly connected to one end of the top of the testing platform 1, and a testing mechanism 3 is installed on the top of the support frame 2. A first rectangular slot 104 is formed in the middle of the top of the testing platform 1, and the same lead screw 501 is rotatably connected between the two ends of the bottom of the first rectangular slot 104. A triangular block 502 is fixedly connected to the top of the side of the first rectangular slot 104 away from the support frame 2. A screw block 603 is screwed into the lead screw 501, and a lead screw nut adapted to the lead screw 501 is fixedly fitted at the bottom of the screw block 603. A movable platform 6 is fixedly connected to the top of the screw block 603, and a vertical hole 604 is formed on the side of the movable platform 6 closest to the support frame 2. A fixing plate 605 is fixedly connected to the bottom and near the top of the hole 604. The same vertical rod 606 is slidably sleeved on one end of the two fixing plates 605 near the triangular block 502. The two fixing plates 605 are provided with square holes that fit the vertical rod 606. The bottom of the vertical rod 606 is provided with a slope that fits the triangular block 502. A fixing ring 607 is fixedly sleeved on the vertical rod 606 at the two fixing plates 605. A spring 608 is sleeved on the vertical rod 606 between the fixing ring 607 and the top fixing plate 605. Through the cooperation between the vertical rod 606 and the triangular block 502, when the moving table 6 approaches the collection frame 401, the vertical rod 606 will automatically rise and compress the spring 608 to achieve unloading.

[0027] In this invention, sliding rods 609 are fixedly connected to both sides of the top of the vertical rod 606. The top of the moving platform 6 is rotatably connected to a top plate 8 near the triangular block 502. Two strip frames 801 are fixedly connected to the bottom of the top plate 8 near the vertical hole 604. Each sliding rod 609 is slidably connected in the adjacent strip frame 801. Through the cooperation between the strip frame 801 and the sliding rod 609, the top plate 8 can be tilted when the vertical rod 606 rises.

[0028] In this utility model, vertical slots 601 are provided at both ends of the moving platform 6. A positioning rod 602 is fixedly connected between the top and bottom of each vertical slot 601. A protrusion 701 is slidably fitted on the circumferential surface of each positioning rod 602. A round hole adapted to the positioning rod 602 is provided on each protrusion 701. The same protective frame 7 is fixedly connected to the outside of the four protrusions 701. A protruding rod 702 is fixedly connected to the bottom of both sides of the outer wall of the protective frame 7. The cooperation between the protrusions 701 and the positioning rods 602 makes the protective frame 7 very stable during the lifting process.

[0029] In this utility model, the top of the testing platform 1 is fixedly connected to both sides of the moving platform 6 with side plates 102. Each side plate 102 has an irregular hole 103. Each protruding rod 702 is slidably connected in the irregular hole 103. The irregular hole 103 includes an oblique hole and a horizontal hole. The bottom of the oblique hole is connected to the horizontal hole. Through the cooperation of the protruding rod 702 and the irregular hole 103, the protective frame 7 rises when testing concrete, so that the broken debris will not fall onto the testing platform 1 and cause debris to be everywhere. When loading and unloading materials, the protective frame 7 will descend, so as not to affect the user's loading and unloading.

[0030] In this utility model, a servo motor 5 is fixedly connected to one end of the testing platform 1 near the support frame 2, and the output end of the servo motor 5 passes through the testing platform 1 and is fixedly connected to one end of the lead screw 501. By rotating the servo motor 5 in both directions, it is convenient for the user to place the concrete block and dump the debris.

[0031] In this invention, a second rectangular groove 105 is provided on both sides of the top of the testing platform 1 near the moving platform 6. A slide rod 106 is fixedly connected between the two ends of each second rectangular groove 105. A slider 107 is slidably fitted on the circumferential surface of each slide rod 106. A circular hole adapted to the slide rod 106 is provided on each slider 107. Both sliders 107 are fixedly connected to the bottom of the moving platform 6. The stability of the moving platform 6 is further improved by the cooperation between the slider 107 and the slide rod 106.

[0032] In this utility model, the detection mechanism 3 includes a hydraulic cylinder 301 fixedly connected to the middle of the top of the support frame 2. The bottom output end of the hydraulic cylinder 301 passes through the support frame 2 and is fixedly connected to a disc 302. A pressure sensor 303 is fixedly connected to the bottom of the disc 302. The pressure sensor 303 can monitor the pressure of the hydraulic cylinder 301 on the concrete block in real time, record the maximum pressure data, and facilitate the determination of the strength of the concrete block. A pressure plate 304 is fixedly connected to the bottom of the pressure sensor 303.

[0033] In this utility model, a control panel 101 is provided on one side of the top of the testing platform 1, and the control panel 101 is electrically connected to the hydraulic cylinder 301, the pressure sensor 303 and the servo motor 5 respectively. Two fixing bars 4 are fixedly connected to the end of the testing platform 1 away from the support frame 2. A sliding groove is opened on the side of the two fixing bars 4 that are close to each other, and the same collection frame 401 is slidably connected in the two sliding grooves. The collection frame 401 can collect concrete debris, and the collection frame 401 can be pulled out from the sliding groove of the fixing bar 4 for easy manual dumping.

[0034] Working Principle: Protective nets are fixedly connected to both sides of the support frame 2 of this device, and the nets do not affect the movement of the protective frame 7. During use, the servo motor 5 is started, driving the lead screw 501 to rotate, causing the screw block 603 to move the moving platform 6 towards one end of the collection frame 401. During this process, the protruding rod 702 slides in the inclined hole of the irregular hole 103, causing the protective frame 7 to gradually descend. A notch is provided at the end of the protective frame 7 near the fixing strip 4. When the notch of the protective frame 7 descends to be level with the moving platform 6, the vertical rod 606 has not yet contacted the triangular block 502. At this point, the user can place the concrete block to be tested on the top plate 8, start the servo motor 5 to reverse, causing the moving platform 6 to return to directly below the testing mechanism 3 with the concrete block. Simultaneously, during the return process, the protective frame 7 gradually rises. The hydraulic cylinder 301 is connected to the hydraulic system, and starting the hydraulic cylinder 301 causes the pressure plate 304 to descend and contact the concrete block, increasing the pressure of the hydraulic cylinder 301. Sensor 303 records pressure data in real time until the concrete block breaks. The maximum pressure data can be viewed at control panel 101. When the concrete block breaks, the debris will not scatter or enter the testing platform 1 due to the protective frame 7. This protective feature further protects the surrounding environment. The servo motor 5 is started to rotate, causing the moving platform 6 to move towards one side of the collection frame 401. During this process, the protective frame 7 gradually descends. As it continues to move, the vertical rod 606 will contact the triangular block 502. Under the action of the inclined surface at the bottom of the vertical rod 606, the vertical rod 606 gradually rises and compresses the spring 608. During the rise of the vertical rod 606, the sliding rod 609 moves upward and pushes the inner wall of the strip frame 801, causing the top plate 8 to gradually tilt and pour the concrete debris on the top of the top plate 8 into the collection frame 401. In this way, the debris on the top of the top plate 8 after testing does not need to be manually cleaned, which greatly reduces the intensity of manual labor and improves work efficiency.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for detecting weather resistance of a concrete structure of an underground construction, comprising a detection table (1), characterized in that, The top of the testing platform (1) is fixedly connected to a support frame (2), and a testing mechanism (3) is provided on the top of the support frame (2). A first rectangular slot (104) is provided in the middle of the top of the testing platform (1), and the same lead screw (501) is rotatably connected between the two ends of the bottom of the first rectangular slot (104). A triangular block (502) is fixedly connected to the top of the side of the first rectangular slot (104) away from the support frame (2). A screw block (603) is screwed into the lead screw (501), and a lead screw nut that matches the lead screw (501) is fixedly sleeved at the bottom of the screw block (603). A movable platform (6) is fixedly connected to the top of the screw block (603), and the movable platform (6) is close to the support. A vertical hole (604) is provided on one side of the frame (2). A fixing plate (605) is fixedly connected to the bottom and near the top of the vertical hole (604). The same vertical rod (606) is slidably sleeved on one end of the two fixing plates (605) near the triangular block (502). A square hole adapted to the vertical rod (606) is provided on both fixing plates (605). An inclined surface is provided at the bottom of the vertical rod (606) and the inclined surface is adapted to the triangular block (502). A fixing ring (607) is fixedly sleeved on the vertical rod (606) at the two fixing plates (605). A spring (608) is sleeved between the fixing ring (607) and the top fixing plate (605) of the vertical rod (606).

2. The device for detecting weather resistance of an underground building concrete structure according to claim 1, wherein The top two sides of the vertical rod (606) are fixedly connected to sliding rods (609). The top of the moving platform (6) near the triangular block (502) is rotatably connected to a top plate (8). Two strip frames (801) are fixedly connected to the bottom of the top plate (8) near the vertical hole (604). Each sliding rod (609) is slidably connected in the adjacent strip frame (801).

3. The device for detecting weather resistance of an underground building concrete structure according to claim 1, wherein The two ends of both sides of the moving platform (6) are provided with vertical grooves (601). A positioning rod (602) is fixedly connected between the top and bottom of each vertical groove (601). A protrusion (701) is slidably sleeved on the circumferential surface of each positioning rod (602). A round hole adapted to the positioning rod (602) is opened on each protrusion (701). The same protective frame (7) is fixedly connected to the outside of the four protrusions (701). A protruding rod (702) is fixedly connected to the bottom of both sides of the outer wall of the protective frame (7).

4. The device for detecting weather resistance of an underground building concrete structure according to claim 3, wherein The top of the testing platform (1) is fixedly connected to both sides of the moving platform (6) with side plates (102). Each side plate (102) has a shaped hole (103), and each protruding rod (702) is slidably connected in the shaped hole (103).

5. The device for detecting weather resistance of an underground building concrete structure according to claim 4, wherein The irregular hole (103) includes an oblique hole and a horizontal hole, and the bottom of the oblique hole is connected to the horizontal hole.

6. The device for detecting weather resistance of an underground building concrete structure according to claim 1, wherein The testing platform (1) is fixedly connected to a servo motor (5) at one end near the support frame (2), and the output end of the servo motor (5) passes through the testing platform (1) and is fixedly connected to one end of the lead screw (501).

7. The device for detecting weather resistance of an underground building concrete structure according to claim 1, wherein The top of the testing platform (1) is provided with second rectangular grooves (105) on both sides near the moving platform (6). A slide rod (106) is fixedly connected between the two ends of each second rectangular groove (105). A slider (107) is slidably sleeved on the circumferential surface of each slide rod (106). A circular hole adapted to the slide rod (106) is provided on each slider (107). Two sliders (107) are fixedly connected to the bottom of the moving platform (6).

8. The device for detecting weather resistance of an underground building concrete structure according to claim 1, wherein The detection mechanism (3) includes a hydraulic cylinder (301) fixedly connected to the middle of the top of the support frame (2). The bottom output end of the hydraulic cylinder (301) passes through the support frame (2) and is fixedly connected to a disc (302). A pressure sensor (303) is fixedly connected to the bottom of the disc (302), and a pressure plate (304) is fixedly connected to the bottom of the pressure sensor (303).

9. The device for detecting weather resistance of an underground building concrete structure according to claim 1, wherein The test bench (1) is equipped with a control panel (101) on one side of its top, and the control panel (101) is electrically connected to the hydraulic cylinder (301), the pressure sensor (303) and the servo motor (5).

10. The device for detecting weather resistance of an underground building concrete structure according to claim 1, wherein Two fixing strips (4) are fixedly connected to the end of the testing table (1) away from the support frame (2). The two fixing strips (4) are provided with a sliding groove on the side that is close to each other, and the same collection frame (401) is slidably connected in the two sliding grooves.

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