Road and bridge concrete strength detection device

Abstract

The utility model provides a road and bridge concrete strength detection device which comprises a detection box, a concrete test piece arranged in the detection box, a protective door arranged at the front end of the detection box in a sliding manner, an observation window arranged on the protective door and a hydraulic cylinder arranged at the top end in the detection box, the device comprises a detection box, a hydraulic cylinder fixed in the detection box, a pressing plate fixed at the telescopic end of the hydraulic cylinder, two guide rods fixed in the detection box and symmetrically and movably mounted on the pressing plate, a support frame arranged at the bottom end in the detection box, and two bearing plates arranged on the support frame and used for placing a cement test piece to be detected, according to the road and bridge concrete strength detection device, the arranged collection assembly is matched with the dust removal assembly, broken concrete test piece fragments can be automatically collected after concrete test piece detection is completed, the labor of workers is reduced, the detection efficiency is guaranteed, and the situation that dust is raised when the fragments are collected, and the workers are affected is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, and more specifically, to a testing device for the strength of concrete in road bridges. Background Technology

[0002] Roads and bridges generally consist of several major parts, including roadbed, pavement, bridges, tunnels, and traffic engineering facilities. Concrete is one of the most important civil engineering materials in modern times. It is made by mixing cementitious materials, granular aggregates, water, and, when necessary, admixtures and additives in a certain proportion, uniformly stirring, and compacting it into shape. It is widely used in road and bridge construction. In the early stages of construction, concrete testing equipment is needed to test the permeability strength of the concrete to assess whether it meets the production quality requirements.

[0003] When the testing device completes the concrete strength test, the tested concrete specimen is crushed into fragments and left inside the testing device. However, the existing compressive strength testing equipment cannot automatically clean up the fragments, which requires manual cleaning by staff. This cleaning is troublesome, increases the labor intensity of staff, affects testing efficiency, and easily generates dust during the cleaning process, affecting the testing environment and impacting the health of staff. Utility Model Content

[0004] The purpose of this invention is to provide a concrete strength testing device for roads and bridges to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides a concrete strength testing device for roads and bridges, comprising: a testing box, a concrete specimen disposed within the testing box, a protective door slidably mounted on the front end of the testing box, an observation window disposed on the protective door, a hydraulic cylinder mounted on the top of the testing box, a pressure plate fixed to the telescopic end of the hydraulic cylinder, two guide rods fixed within the testing box and symmetrically movable on the pressure plate, a support frame disposed at the bottom of the testing box, two load-bearing plates disposed on the support frame for placing the concrete specimen to be tested, a collection assembly disposed on the support frame and the testing box, a dust removal assembly disposed on the testing box, the support frame, and the collection assembly, and a positioning assembly disposed on the support frame.

[0006] The collection assembly is adapted to collect fragments after the concrete specimen has been tested;

[0007] The dust collection component is adapted to collect dust generated during the testing process of the concrete specimen and during the collection of fragments.

[0008] The positioning component is adapted to adjust and control the position of the concrete specimen.

[0009] Furthermore, the collection assembly includes a feeding trough opened on the support frame, a movable trough opened in the support frame and allowing the two load-bearing plates to move, a collection drawer movably installed on the detection box and the support frame, an opening and closing component installed in the support frame, a number of support rods fixed at equal intervals in the feeding trough, and two scrapers symmetrically installed on the support frame.

[0010] The lower ends of the two scrapers respectively abut against the two load-bearing plates, wherein

[0011] The opening and closing mechanism is adapted to control the horizontal movement of the two load-bearing plates.

[0012] Furthermore, the opening and closing component includes a sliding groove formed in the support frame, two control blocks respectively fixed to the lower surfaces of the two load-bearing plates and slidably installed in the sliding groove, a bidirectional screw rotatably connected in the sliding groove, and a control motor fixed on the outer wall of the detection box;

[0013] The output end of the control motor is fixedly connected to one end of the bidirectional screw.

[0014] The two control blocks are respectively threaded to both ends of the bidirectional screw.

[0015] Furthermore, the dust removal assembly includes several air inlet slots formed on the upper part of the outer wall of the detection box, a through slot formed on the support frame, a partition fixed in the collection drawer, a dust removal box movably installed at the rear end of the collection drawer, several vent holes formed on the partition and the dust removal box, a closed cover movably installed on the top of the dust removal box, two filter plates inserted into the dust removal box, and an air extraction component provided on the detection box and the dust removal box.

[0016] Furthermore, the air extraction component includes an air pump installed on the outer wall of the detection box, an air supply pipe connected at one end to the air inlet of the air pump, a connecting joint connected to the other end of the air supply pipe and installed on the detection box, and a connecting groove opened on the dust removal box.

[0017] One end of the connector is fitted and slidably inserted into the connecting groove.

[0018] Furthermore, the positioning assembly includes two electric push rods symmetrically fixed to the upper surface of the support frame, two side clamps respectively fixed to the telescopic ends of the two electric push rods, and a limiting member disposed on the upper surface of the support frame.

[0019] Furthermore, the limiting component includes a positioning frame fixed to the upper surface of the support frame, an extension rod movably installed in the positioning frame, a limiting block fixedly connected to the extension rod, two guide plates symmetrically fixed to the limiting block and respectively abutting against both sides of the positioning frame, a positioning screw threaded on the positioning frame, and a plurality of positioning grooves opened on the extension rod and corresponding to the positioning screw.

[0020] Compared with the prior art, the embodiments of this utility model have the following beneficial effects:

[0021] 1. This road and bridge concrete strength testing device, through its collection components, can control the translation of two load-bearing blocks when the concrete specimen has completed the compressive testing and broken into fragments. This allows for the automatic collection of the concrete specimen fragments and the cleaning of the surfaces of the two load-bearing blocks, meeting the placement requirements of the next concrete specimen. It also reduces cleaning time, which is beneficial to improving work efficiency. It eliminates the need for manual cleaning of fragments by staff, reducing the labor intensity of staff and effectively improving the testing efficiency of concrete specimens.

[0022] 2. This road and bridge concrete strength testing device, through its dust removal components, can collect the dust generated when concrete specimens crack during testing, preventing dust from adhering to the observation window and affecting the staff's observation of the concrete specimens. Simultaneously, it can prevent dust from being generated when collecting fragments after concrete specimen testing, thus preventing dust contamination of the annular ring inside the testing chamber and affecting subsequent concrete specimen testing. Furthermore, it avoids dust interfering with the staff's operation when opening the protective door to place the next concrete specimen. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 A perspective view of the present invention is shown;

[0025] Figure 2 A perspective view of the present invention in another state is shown;

[0026] Figure 3 This invention provides a partially cross-sectional perspective view. Figure 1 ;

[0027] Figure 4 This invention demonstrates a partially disassembled three-dimensional representation. Figure 1 ;

[0028] Figure 5 This invention demonstrates a partially disassembled three-dimensional representation. Figure 2 ;

[0029] Figure 6 This invention provides a partially cross-sectional perspective view. Figure 2 .

[0030] In the picture

[0031] 1. Testing box; 2. Concrete specimen; 3. Protective door; 4. Observation window; 5. Hydraulic cylinder; 6. Pressure plate; 7. Guide rod; 8. Support frame; 9. Load-bearing plate; 10. Collection assembly; 11. Dust removal assembly; 12. Positioning assembly; 13. Discharge chute; 14. Movable chute; 15. Collection drawer; 16. Opening and closing parts; 17. Support rod; 18. Scraper; 19. Sliding groove; 20. Control block; 21. Bidirectional screw; 22. Control motor 23. Air inlet slot; 24. Through slot; 25. Partition plate; 26. Dust collector box; 27. Vent hole; 28. Sealing cover; 29. ​​Filter plate; 30. Air extraction component; 31. Air pump; 32. Air delivery pipe; 33. Connecting joint; 34. Connecting groove; 35. Electric push rod; 36. Side clamp plate; 37. Limiting component; 38. Positioning frame; 39. Extension rod; 40. Limiting block; 41. Guide plate; 42. Positioning screw; 43. Positioning groove. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0033] like Figure 1-6 As shown, a concrete strength testing device for roads and bridges includes: a testing box 1, a concrete specimen 2 disposed inside the testing box 1, a protective door 3 slidably installed at the front end of the testing box 1, an observation window 4 disposed on the protective door 3, a hydraulic cylinder 5 installed at the top of the testing box 1, a pressure plate 6 fixed to the telescopic end of the hydraulic cylinder 5, two guide rods 7 fixed inside the testing box 1 and symmetrically movable on the pressure plate 6, a support frame 8 disposed at the bottom of the testing box 1, two load-bearing plates 9 disposed on the support frame 8 for placing the concrete specimen to be tested, a collection assembly 10 disposed on the support frame 8 and the testing box 1, a dust removal assembly 11 disposed on the testing box 1, the support frame 8 and the collection assembly 10, and a positioning assembly 12 disposed on the support frame 8.

[0034] The collection component 10 is adapted to collect fragments after testing the concrete specimen 2;

[0035] The dust removal component 11 is adapted to collect dust generated during the testing process of the concrete specimen 2 and during the fragment collection process;

[0036] The positioning component 12 is adapted to adjust and control the position of the concrete specimen 2. In use, the protective door 3 is opened, and the concrete specimen 2 to be tested is initially positioned on the two load-bearing plates 9 using the positioning component 12. Under the control of the positioning component 12, the position of the concrete specimen 2 is adjusted so that the center end of the concrete specimen 2 and the center end of the load-bearing plate are on the same axis, thus ensuring uniform pressure on the concrete specimen 2 during pressure testing and improving the accuracy of the strength test. After the testing box 1 is closed through the protective door 3, the testing of the concrete specimen 2 can begin. The hydraulic cylinder 5 is activated to control the pressure block to move stably downward under the restriction of the two guide rods 7, approaching and squeezing the concrete specimen 2 to perform strength testing. At this time, the staff can observe the changes in the concrete specimen 2 through the observation window 4, and the protective door 3 prevents the crushed concrete specimen 2 fragments from shattering and injuring people. Simultaneously with the testing, the system... The dust collection component 11 can collect the dust generated when the concrete breaks during testing, preventing dust from adhering to the observation window 4 and affecting the staff's observation of the concrete specimen 2 during the testing process. After the concrete specimen 2 is tested and breaks under pressure, the collection component 10 can automatically collect and store the fragments of the concrete specimen 2. In conjunction with the dust collection component 11, it can prevent dust from being stirred up during the collection of the concrete specimen 2, avoid dust contamination of the space inside the testing box 1, and prevent the staff from being disturbed by dust when opening the protective door 3 to place the next concrete specimen 2. At the same time, the two scrapers 18 in the collection component 10 can clean the two load-bearing plates 9 during the collection of concrete specimen 2 fragments, thereby meeting the testing needs of the next concrete specimen 2. After all concrete specimens 2 have been tested, the collection drawer 15 can be removed from the testing box 1, and the concrete fragments collected in the collection drawer 15 and the dust in the dust collection box 26 can be centrally processed.

[0037] Optionally, the collection assembly 10 includes a discharge trough 13 opened on the support frame 8, a movable trough 14 opened in the support frame 8 and allowing the two load-bearing plates 9 to move, a collection drawer 15 movably installed on the detection box 1 and the support frame 8, an opening and closing member 16 installed in the support frame 8, a plurality of support rods 17 fixed at equal intervals in the discharge trough 13, and two scrapers 18 symmetrically installed on the support frame 8;

[0038] The lower ends of the two scraper blocks 18 respectively abut against the two load-bearing plates 9, wherein

[0039] The opening / closing component 16 is adapted to control the horizontal movement of the two load-bearing plates 9. After the concrete specimen 2 is tested and crushed into fragments, the opening / closing component 16 can control the two load-bearing plates 9 to move away from each other, allowing the discharge chute 13 to flow smoothly. This allows the broken concrete specimen 2 to fall into the collection drawer 15 through the discharge chute 13, eliminating the need for manual cleaning of the fragments after testing, reducing the labor intensity of the workers, and effectively improving the efficiency of concrete specimen 2 testing. Furthermore, when the two load-bearing plates 9 move horizontally, the opening / closing component 16 can control the two load-bearing plates 9 to move away from each other, ensuring unobstructed flow of the discharge chute 13. The two scrapers 18 can scrape and clean the upper surfaces of the two load-bearing plates 9 respectively, ensuring the cleaning effect of the concrete specimens 2 on the two load-bearing plates 9 and meeting the testing requirements of the next concrete specimen 2; while the set support rods 17 can support the two load-bearing plates 9 when they close the material trough 13, thereby effectively improving the stability of the two load-bearing plates 9 during use, ensuring the stability and effectiveness of the concrete specimens 2 under pressure testing, and the gap between two adjacent support rods 17 facilitates the falling of broken concrete specimens 2 fragments into the collection drawer 15.

[0040] Optionally, the opening and closing component 16 includes a sliding groove 19 formed in the support frame 8, two control blocks 20 respectively fixed to the lower surfaces of the two load-bearing plates 9 and slidably installed in the sliding groove 19, a bidirectional screw 21 rotatably connected in the sliding groove 19, and a control motor 22 fixed on the outer wall of the detection box 1.

[0041] The output end of the control motor 22 is fixedly connected to one end of the bidirectional screw 21;

[0042] The two control blocks 20 are threadedly connected to both ends of the bidirectional screw 21. After the concrete specimen 2 is tested, the control motor 22 is activated to drive the bidirectional screw 21 to rotate, thereby controlling the two control blocks 20 to move within the sliding groove 19. This causes the two load-bearing plates 9 to move away from each other, allowing the concrete specimen 2 fragments on the two load-bearing plates 9 to fall into the collection drawer 15 through the feeding chute 13 for collection. After the concrete specimen 2 fragments are collected, the two load-bearing plates 9 are controlled to move closer together to facilitate the subsequent testing of the next concrete specimen 2.

[0043] Optionally, the dust removal assembly 11 includes several air inlet slots 23 formed on the upper part of the outer wall of the test chamber 1, a through slot 24 formed on the support frame 8, a partition 25 fixed inside the collection drawer 15, a dust removal box 26 movably installed at the rear end of the collection drawer 15, several air vents 27 formed on the partition 25 and the dust removal box 26, a sealing cover 28 movably installed on the top of the dust removal box 26, two filter plates 29 inserted into the dust removal box 26, and an air extraction component 30 provided on the test chamber 1 and the dust removal box 26. The air extraction component 30 is activated when the concrete specimen 2 is pressurized. The dust collection box 26 is controlled to generate negative pressure, allowing outside air to enter the test box 1 through several air inlet slots 23, carrying the dust generated during the test. The air then enters the collection drawer 15 through the through slot 24, and then enters the dust collection box 26 through several vent holes 27, where it is filtered and collected by two filter plates 29. When the collection component 10 collects the fragments of the concrete specimen 2 after testing, the collection box can also collect the dust generated when the fragments fall, thus effectively preventing dust from affecting the operation of the staff and preventing dust from adhering to the observation window 4, which would affect the staff's observation of the cracking of the concrete specimen 2.

[0044] Optionally, the air extraction component 30 includes an air pump 31 installed on the outer wall of the detection box 1, an air supply pipe 32 connected to the air inlet of the air pump 31 at one end, a connecting joint 33 connected to the other end of the air supply pipe 32 and installed on the detection box 1, and a connecting groove 34 opened on the dust removal box 26.

[0045] One end of the connecting joint 33 is fitted and slidably inserted into the connecting groove 34. Before the dust removal assembly 11 is used, the collection drawer 15 is placed in the rear shelf, and the connecting joint 33 is inserted into the connecting groove 34, thereby controlling the air inlet of the suction pump 31 to connect with the dust removal box 26. When the dust removal work is performed, the suction pump 31 is started, and air is drawn from the dust removal box 26 through the air supply pipe 32, so that negative pressure is generated in the dust removal box 26, thereby extracting the dust located in the collection drawer 15 and the detection box 1.

[0046] Optionally, the positioning component 12 includes two electric push rods 35 symmetrically fixed to the upper surface of the support frame 8, two side clamps 36 respectively fixed to the telescopic ends of the two electric push rods 35, and a limiting member 37 set on the upper surface of the support frame 8. After the concrete specimen 2 is placed on the two load-bearing plates 9 and the initial positioning is completed by the setting limiting component, the two electric push rods 35 can be started to work simultaneously, controlling the two side clamps 36 to contact the concrete specimen 2 at the same time, and adjusting the concrete specimen 2 by contact, so that the concrete specimen 2 completes the positioning before testing, ensuring that the center end of the center end pressure plate 6 of the concrete specimen 2 is aligned on the same axis, and the concrete specimen 2 is subjected to uniform force when compressed, thereby effectively improving the accuracy of the strength test of the concrete specimen 2.

[0047] Optionally, the limiting member 37 includes a positioning frame 38 fixed to the upper surface of the support frame 8, an extension rod 39 movably installed in the positioning frame 38, a limiting block 40 fixedly connected to the extension rod 39, two guide plates 41 symmetrically fixed to the limiting block 40 and respectively abutting against both sides of the positioning frame 38, a positioning screw 42 threadedly installed on the positioning frame 38, and a plurality of positioning grooves 43 opened on the extension rod 39 and corresponding to the positioning screw 42, and the concrete specimen 2 is clamped by two side clamping plates 36. Before positioning, when placing the concrete specimen 2 on the two load-bearing plates 9, the limiting block 40 is used to pre-limit the concrete. During use, when the positioning screw 42 is rotated to disengage from one of the positioning slots 43, the limitation on the extension rod 39 is released. The movable extension rod 39 is then used to adjust the position of the limiting block 40 by moving it between the two guide plates 41. After adjustment, the positioning screw 42 is rotated to enter the other positioning slot 43, thus completing the positioning of the limiting block 40 after adjustment. This allows the limiting block 40 to perform preliminary positioning of concrete specimens 2 of different sizes.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for testing the strength of concrete for roads and bridges, characterized in that, include: The test chamber (1), the concrete specimen (2) set inside the test chamber (1), the protective door (3) slidably installed at the front end of the test chamber (1), the observation window (4) set on the protective door (3), the hydraulic cylinder (5) installed at the top inside the test chamber (1), the pressure plate (6) fixed at the telescopic end of the hydraulic cylinder (5), the two guide rods (7) fixed inside the test chamber (1) and symmetrically installed on the pressure plate (6), the support frame (8) set at the bottom inside the test chamber (1), the two load-bearing plates (9) set on the support frame (8) and used to place the cement specimen to be tested, the collection assembly (10) set on the support frame (8) and the test chamber (1), the dust removal assembly (11) installed on the test chamber (1), the support frame (8) and the collection assembly (10), and the positioning assembly (12) set on the support frame (8), wherein The collection component (10) is adapted to collect fragments after testing the concrete specimen (2); The collecting assembly (10) includes a feeding trough (13) opened on the support frame (8), a movable trough (14) opened in the support frame (8) and for the two load-bearing plates (9) to move, a collecting drawer (15) movably installed on the detection box (1) and the support frame (8), an opening and closing piece (16) installed in the support frame (8), a number of support rods (17) fixed at equal intervals in the feeding trough (13), and two scrapers (18) symmetrically installed on the support frame (8). The lower ends of the two scraper blocks (18) respectively abut against the two load-bearing plates (9), wherein The opening and closing component (16) is adapted to control the two load-bearing plates (9) to move horizontally. The opening and closing component (16) includes a sliding groove (19) opened in the support frame (8), two control blocks (20) fixed on the lower surface of the two load-bearing plates (9) respectively, and slidably installed in the sliding groove (19), a bidirectional screw (21) rotatably connected in the sliding groove (19), and a control motor (22) fixed on the outer wall of the detection box (1). The output end of the control motor (22) is fixedly connected to one end of the bidirectional screw (21); The two control blocks (20) are respectively threaded to both ends of the bidirectional screw (21); The dust removal component (11) is adapted to collect dust generated during the testing process of the concrete specimen (2) and during the fragment collection process; The dust removal assembly (11) includes several air inlet slots (23) formed on the upper part of the outer wall of the detection box (1), a through slot (24) formed on the support frame (8), a partition (25) fixed inside the collection drawer (15), a dust removal box (26) movably installed at the rear end of the collection drawer (15), several vent holes (27) formed on the partition (25) and the dust removal box (26), a closing cover (28) movably installed on the top of the dust removal box (26), and a cover inserted into the dust removal box (2). 6) Two filter plates (29) inside, and an air extraction component (30) provided on the test box (1) and the dust removal box (26). The air extraction component (30) includes an air pump (31) installed on the outer wall of the test box (1), an air supply pipe (32) with one end connected to the air inlet end of the air pump (31), a connecting joint (33) connected to the other end of the air supply pipe (32) and installed on the test box (1), and a connecting groove (34) opened on the dust removal box (26). One end of the connecting joint (33) is fitted and slidably inserted into the connecting groove (34); The positioning component (12) is adapted to adjust and control the position of the concrete specimen (2); The positioning component (12) includes two electric push rods (35) symmetrically fixed on the upper surface of the support frame (8), two side clamps (36) respectively fixed on the telescopic ends of the two electric push rods (35), and a limiting member (37) provided on the upper surface of the support frame (8). The limiting member (37) includes a positioning frame (38) fixed on the upper surface of the support frame (8), an extension rod (39) movably installed in the positioning frame (38), a limiting block (40) fixedly connected to the extension rod (39), two guide plates (41) symmetrically fixed on the limiting block (40) and respectively abutting against both sides of the positioning frame (38), a positioning screw (42) threaded on the positioning frame (38), and a plurality of positioning grooves (43) opened on the extension rod (39) and corresponding to the positioning screw (42).

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