Concrete strength detection equipment for highway bridge construction
By designing automated concrete strength testing equipment, the problem of inaccurate testing caused by block adhesion was solved, achieving uniform stress on the test blocks and accurate test results, thus improving testing efficiency.
Patent Information
- Application Number
- CN202512030772.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-02-13
AI Technical Summary
In existing concrete strength testing equipment, the pressure block adheres to the concrete test block during the testing process, making it difficult to clean. This results in inaccurate test results and uneven stress on the test block, affecting the accuracy and efficiency of the test.
A concrete strength testing device was designed, comprising a base, a housing, a support frame, a rotating column, a lower pressure block, an upper pressure block, a scraper, and a hydraulic system. The upper pressure block is driven to descend by a hydraulic cylinder, and the scraper cleans up the adhering debris. Combined with a conveyor belt and a servo motor, automatic loading and unloading and test block positioning are achieved to ensure uniform force distribution.
It improves the accuracy and efficiency of concrete test block testing results, ensures the surface of the upper pressure block is clean, the test block is subjected to uniform stress, has a high degree of automation, and the testing process is stable and reliable.
Smart Images
Figure CN121521633A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pressure testing equipment technology, and more specifically to a concrete strength testing device for highway bridge construction. Background Technology
[0002] Concrete is one of the most widely used structural materials in modern construction engineering. Its strength is directly related to the safety and durability of buildings. The strength of concrete determines its load-bearing capacity. In construction engineering, insufficient concrete strength may lead to structural failure, while excessive strength may cause material waste and increased costs. Therefore, accurate testing of concrete strength is crucial to ensuring the safety and economy of engineering projects. The cube compressive strength test is one way to test the strength of concrete.
[0003] The shortcomings of existing technology: When testing the compressive strength of concrete test blocks, a hydraulic component drives an upper pressure block to apply pressure to the concrete test block until it breaks, thereby obtaining the compressive strength of the concrete test block. However, when the upper pressure block crushes the concrete test block, it may slightly adhere to the pressure block under high pressure. This residue will be carried up with the pressure block as it is lifted and reset, remaining on the pressure block. If the residual fragments are not cleaned, they will affect the flatness of the pressure plate, resulting in uneven stress on the test block in the next test, causing eccentric compression, which can easily lead to inaccurate test data of the test block strength. To address this, we propose a concrete strength testing device for highway bridge construction. Summary of the Invention
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a concrete strength testing device for highway bridge construction to solve the problems existing in the background art.
[0005] This invention provides the following technical solution: a concrete strength testing device for highway bridge construction, comprising a base, a housing mounted on the upper end of the base, a support frame installed inside the housing, a rotating column rotatably connected inside the support frame, an mounting frame mounted on the circumferential surface of the rotating column, and multiple pressing blocks slidably connected inside the mounting frame. Each pressing block is located within a through hole on the upper surface of the housing, and a concrete test block is placed on the upper end of each pressing block. An extrusion assembly is mounted on the upper end of the housing, the extrusion assembly including a guide frame, a lifting block, and an upper pressing block. The system comprises a chute, a sliding frame, a telescopic shell, and a scraper. The guide frame is mounted on the upper end of the chassis. The lifting block is slidably connected to the circumferential surface of the guide frame. The output end of the first hydraulic cylinder mounted on the upper end of the guide frame is fixedly connected to the lifting block. The upper pressure block is mounted on the lower end of the lifting block. A pair of chute sections are formed on the lower end surface of the upper pressure block. The sliding frame is slidably connected to the chute section. The telescopic shell is mounted on the upper end of the sliding frame. A scraper is slidably connected inside the telescopic shell. A first spring is installed between the scraper and the telescopic chute. The scraper is slidably connected to the lower pressure block. Preferably, the upper end of the sliding frame is rotatably connected to a rotating shaft via a rotating seat. A brush and a first gear are mounted on the circumferential surface of the rotating shaft. The brush is in contact with the upper pressure block. A first tooth groove is formed on the lower end face of the upper pressure block. The first gear meshes with the first tooth groove.
[0006] Preferably, a pair of threaded rods are rotatably connected inside the upper pressure block. The circumferential surface of the threaded rods is threadedly connected to the sliding frame. A second gear is installed on the circumferential surface of each threaded rod. The second gear meshes with a first rack installed at the lower end of the guide frame.
[0007] Preferably, a protective cover is installed on the upper end of the chassis, and multiple second racks are slidably connected inside the protective cover. Rubber positioning blocks are installed on the end faces of the second racks. Multiple rotating frames and multiple sliding rods are installed on the upper end of the chassis. A rotating rod is rotatably connected inside each rotating frame. A third gear and a fourth gear are installed on the circumference of each rotating rod. The third gears mesh with the second racks, and the fourth gears mesh with the third racks slidably connected to the circumference of the sliding rods. A tension spring is installed between each third rack and the chassis, and a lifting block is installed on the upper end of each third rack.
[0008] Preferably, the protective cover has a pair of observation ports, each of which is fitted with explosion-proof glass. A pair of fixing brackets are installed on the circumferential surface of the protective cover, and a monitoring probe is installed on the surface of the fixing brackets. The monitoring probes correspond to the positions of the observation ports.
[0009] Preferably, a pair of second hydraulic cylinders and a servo motor are installed at the lower end of the support frame. Each of the second hydraulic cylinders has a lifting seat installed at its output end. The lifting seat is used to push the lower pressure block to move upward. The output end of the servo motor is fixedly connected to the rotating column.
[0010] Preferably, the base and the rear end of the chassis are provided with a parking slot, a collection hopper is placed in the parking slot, a connecting frame is installed in the chassis, the connecting frame is located directly above the collection hopper, and a push block and a cotton block are installed at the lower end of the connecting frame.
[0011] Preferably, a mounting shell is installed on the upper end of the chassis, and multiple drive shafts are rotatably connected between the mounting shell and the chassis. Conveying rollers are installed on the circumferential surface of each drive shaft, and a conveyor belt is connected between the conveying rollers. Multiple concrete test blocks are placed between the conveyor belts, and partitions are installed on the circumferential surface of each conveyor belt to separate the concrete test blocks.
[0012] The technical effects and advantages of this invention are as follows: 1. This invention controls the operation of a first hydraulic cylinder to lower the upper pressure block, applying pressure to the concrete test block below until it breaks. At this point, the compressive strength of the concrete test block can be determined by a pressure sensor. Subsequently, the first hydraulic cylinder is controlled to retract and reset, driving the lifting block and the upper pressure block to rise and reset. During the resetting process of the upper pressure block, the sliding frame is controlled to slide in the slide groove, synchronously driving the telescopic shell and scraper to move. Through the action of the first spring, the upper end of the scraper is always in close contact with the lower end of the upper pressure block. The scraper removes the residual fragments adhering to the lower pressure block, achieving the effect of cleaning the lower end surface of the upper pressure block, ensuring the flatness of the lower end surface of the upper pressure block, and making the concrete test block subjected to uniform force when pressure is applied.
[0013] 2. This invention places multiple concrete test blocks to be tested between partitions and controls the rotation of a conveyor belt. The conveyor belt pushes the concrete test blocks to the left through the partitions, moving the leftmost concrete test block onto the right-side lower pressure block. This achieves automatic feeding of the concrete test blocks to be tested. After the concrete test block on the right-side lower pressure block has been tested, the output end of the second hydraulic cylinder retracts, causing the concrete test blocks on both sides to descend simultaneously. At this time, both the broken concrete test block and the concrete test block to be tested move into the chamber. As the positions of the lower pressure blocks on the left and right sides rotate and switch, the broken concrete test block can be removed from the lower pressure block, while the concrete test block to be tested is moved under the upper pressure block. During the concrete test block strength testing process, the concrete test blocks can be automatically fed and unloaded, and the concrete test blocks can be positioned simultaneously. This not only improves the testing efficiency of the concrete test blocks but also ensures the accuracy of the test results. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a frontal view of the structure in this invention; Figure 3 This is a schematic diagram of the conveyor belt and partition in this invention; Figure 4 This is a schematic diagram of the parking trough in this invention; Figure 5 This is a schematic diagram of the front cross-section of the structure in this invention; Figure 6 This is a schematic diagram of the structure in the frontal cross-section of the present invention; Figure 7 This is a schematic diagram of the structure of the mounting bracket when it rotates in this invention; Figure 8 This is a schematic diagram of the structure of the lower pressure block in this invention; Figure 9 This is a schematic diagram of the structure of the concrete test block during extrusion in this invention; Figure 10In this invention Figure 9 A schematic diagram of the structure of part A; Figure 11 This is a schematic diagram of the sliding frame structure from a bottom view in this invention; Figure 12 This is a schematic diagram of the sliding frame in this invention; Figure 13 This is a schematic diagram of the right-side cross-section of the lifting block in this invention; Figure 14 This is a schematic diagram of the structure of the first rack in this invention; Figure 15 This is a schematic diagram of the structure of the rubber positioning block when it compresses and positions the concrete test block in this invention; Figure 16 In this invention Figure 15 A structural diagram of section B; Figure 17 This is a schematic diagram of the rubber positioning block during resetting in this invention.
[0015] The attached figures are labeled as follows: 1. Base; 101. Chassis; 102. Support frame; 103. Rotating column; 104. Mounting frame; 105. Lower pressure block; 106. Through hole; 107. Concrete test block; 108. Second hydraulic cylinder; 109. Servo motor; 1010. Lifting seat; 2. Extrusion assembly; 201. Guide frame; 202. Lifting block; 203. First hydraulic cylinder; 204. Upper pressure block; 205. Slide groove; 206. Sliding frame; 207. Telescopic shell; 208. Scraper; 209. First spring; 3. Rotating shaft; 301. Brush; 302. First gear; 303. First tooth groove; 4. Threaded rod; 401. Second gear; 402. First rack; 5. Protective cover; 501. Second rack; 502. Rubber positioning block; 503. Slide rod; 504. Rotating frame; 505. Rotating rod; 506. Third gear; 507. Fourth gear; 508. Third rack; 509. Tension spring; 5010. Lifting block; 6. Observation port; 601. Explosion-proof glass; 602. Fixing frame; 603. Monitoring probe; 7. Parking trough; 701. Collection hopper; 702. Connecting frame; 703. Push block; 704. Cotton block; 8. Mounting shell; 801. Drive shaft; 802. Conveying roller; 803. Conveying belt; 804. Partition. Detailed Implementation
[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The concrete strength testing equipment for highway bridge construction involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] like Figure 1-12 As shown, in one embodiment, a concrete strength testing device for highway bridge construction is proposed, including a base 1, a housing 101 mounted on the upper end of the base 1, a support frame 102 installed inside the housing 101, a rotating column 103 rotatably connected inside the support frame 102, an mounting frame 104 mounted on the circumferential surface of the rotating column 103, and multiple pressing blocks 105 slidably connected inside the mounting frame 104. The pressing blocks 105 are located in through holes 106 opened on the upper end face of the housing 101, and concrete test blocks 107 are placed on the upper end of the pressing blocks 105. An extrusion assembly 2 is installed on the upper end of the housing 101, the extrusion assembly 2 including a guide frame 201, a lifting block 202, an upper pressing block 204, a slide 205, and a sliding... The system includes a moving frame 206, a telescopic shell 207, and a scraper 208. A guide frame 201 is installed on the upper end of the housing 101. A lifting block 202 is slidably connected to the circumferential surface of the guide frame 201. The output end of a first hydraulic cylinder 203 installed on the upper end of the guide frame 201 is fixedly connected to the lifting block 202. An upper pressure block 204 is installed on the lower end of the lifting block 202. A pair of sliding grooves 205 are both opened on the lower end surface of the upper pressure block 204. A sliding frame 206 is slidably connected in the sliding groove 205. A telescopic shell 207 is installed on the upper end of the sliding frame 206. A scraper 208 is slidably connected in the telescopic shell 207. A first spring 209 is installed between the scraper 208 and the telescopic groove. The scraper 208 is slidably connected to the lower pressure block 105.
[0018] In practical application, the lower pressure block 105 is controlled to move upward, positioning it within the through hole 106 and flush with the upper surface of the housing 101. The concrete test block 107, placed on the lower pressure block 105, then extends from the housing 101 simultaneously with the lower pressure block 105. At this time, the first hydraulic cylinder 203 is activated, causing the lifting block 202 to descend. Simultaneously, the lifting block 202 lowers the upper pressure block 204. The upper pressure block 204 then applies pressure to the concrete test block 107 below until it breaks. The pressure sensor then determines the current state of the concrete test block 107. The compressive strength data is obtained, and then the first hydraulic cylinder 203 is controlled to retract and reset, driving the lifting block 202 and the upper pressure block 204 to lift and reset. During the reset of the upper pressure block 204, the sliding frame 206 is controlled to slide in the slide groove 205, which simultaneously drives the telescopic shell 207 and the scraper 208 to move. Through the action of the first spring 209, the upper end of the scraper 208 is always in close contact with the lower end of the upper pressure block 204. The scraper 208 scrapes away the residual fragments adhering to the lower pressure block 105, achieving the effect of cleaning the lower end surface of the upper pressure block 204, ensuring the flatness of the lower end surface of the upper pressure block 204, and making the concrete test block 107 uniformly stressed when pressure is applied.
[0019] like Figure 10-13 As shown, in one embodiment, the upper end of the sliding frame 206 is rotatably connected to the rotating shaft 3 via a rotating seat. A brush 301 and a first gear 302 are mounted on the circumferential surface of the rotating shaft 3. The brush 301 is in contact with the upper pressure block 204. A first tooth groove 303 is opened on the lower end surface of the upper pressure block 204. The first gear 302 meshes with the first tooth groove 303.
[0020] In practical application, when the sliding frame 206 slides in the sliding groove 205, the sliding frame 206 synchronously drives the rotating shaft 3, the brush 301 and the first gear 302 to move. Through the action of the first tooth groove 303, the first tooth groove 303 drives the first gear 302 to move. The first gear 302 drives the rotating shaft 3 and the brush 301 to rotate. The rotating brush 301 cleans the lower end surface of the upper pressure block 204, further improving the cleaning effect on the surface of the upper pressure block 204.
[0021] like Figure 9 , 11 As shown in Figure 14, in one embodiment, a pair of threaded rods 4 are rotatably connected inside the upper pressure block 204. The circumferential surface of the threaded rods 4 is threadedly connected to the sliding frame 206. A second gear 401 is installed on the circumferential surface of each threaded rod 4. The second gear 401 meshes with a first rack 402 installed at the lower end of the guide frame 201.
[0022] In practical application, during the resetting and rising process of the lifting block 202 and the upper pressure block 204, the first rack 402 will engage with the second gear 401. Subsequently, through the action of the first rack 402, the second gear 401 will rotate, which in turn will rotate the threaded rod 4. The threaded rod 4 will then drive the sliding frame 206 to slide in the slide groove 205. After the lifting block 202 and the upper pressure block 204 have finished resetting, the sliding frame 206 will move to the rightmost end of the slide groove 205. During the descent of the upper pressure block 204, when the first rack 402 separates from the second gear 401, the sliding frame 206 moves to the leftmost end of the slide groove 205. Since no force is generated to push the sliding frame 206 afterward, and no force is generated to rotate the first gear 302 and the threaded rod 4, the second gear 401 is stationary when it separates from the first rack 402 and when it contacts the first rack 402. When the second gear 401 rises afterward, it can re-mesh and reconnect with the first gear 302.
[0023] like Figure 15-17 As shown, in one embodiment, a protective cover 5 is installed on the upper end of the chassis 101. Multiple second racks 501 are slidably connected inside the protective cover 5. Rubber positioning blocks 502 are installed on the end faces of the second racks 501. Multiple rotating frames 504 and multiple sliding rods 503 are installed on the upper end of the chassis 101. Rotating rods 505 are rotatably connected inside each rotating frame 504. Third gears 506 and fourth gears 507 are installed on the circumference of the rotating rods 505. The third gears 506 mesh with the second racks 501. The fourth gears 507 mesh with the third racks 508 slidably connected on the circumference of the sliding rods 503. Tension springs 509 are installed between the third racks 508 and the chassis 101. Lifting blocks 5010 are installed on the upper end of each third rack 508.
[0024] In practical application, the embodiment of the present invention utilizes the tension spring 509 to pull the third rack 508 downward on the circumferential surface of the slide rod 503. The third rack 508 drives the fourth gear 507 to rotate, which in turn drives the rotating rod 505 and the third gear 506 to rotate. The third gear 506 drives the second rack 501 to slide within the protective cover 5, simultaneously moving multiple rubber positioning blocks 502 toward the center of the protective cover 5. This, in turn, pushes the concrete test block 107 to move, correcting its position and ensuring uniform force distribution during pressure testing, thus guaranteeing the performance of the concrete test block. To ensure the accuracy of the strength test of concrete block 107, after the concrete block 107 has been tested and the lifting block 202 has been lifted and reset, the lifting block 5010 can pull the third rack 508 upward. The third rack 508, through the action of the fourth gear 507 and the rotating rod 505, drives the third gear 506 to rotate. The third gear 506 drives the second rack 501 to slide inside the protective cover 5, which in turn drives the rubber positioning block 502 to move around in the protective cover 5. After the lifting block 202 has been lifted and reset, the rubber positioning block 502 moves around and opens, leaving space for the subsequent upward movement of the concrete block 107.
[0025] like Figure 15 As shown, in one embodiment, a pair of observation ports 6 are provided inside the protective cover 5, and explosion-proof glass 601 is installed in each observation port 6. A pair of fixing brackets 602 are installed on the circumferential surface of the protective cover 5, and a monitoring probe 603 is installed on the surface of the fixing bracket 602. The monitoring probe 603 corresponds to the position of the observation port 6.
[0026] In practical applications, this invention utilizes a pair of monitoring probes 603 to directly record the compression and breakage of the concrete specimen 107 through the explosion-proof glass 601. Once the concrete specimen 107 breaks under pressure, the monitoring probes 603 transmit a signal to the controller, which then controls the first hydraulic cylinder 203 to reset, completing the testing of the concrete specimen 107. like Figure 5 , 6 As shown in Figure 7, in one embodiment, a pair of second hydraulic cylinders 108 and a servo motor 109 are installed at the lower end of the support frame 102. Each of the output ends of the second hydraulic cylinders 108 is equipped with a lifting seat 1010, which is used to push the lower pressure block 105 to move upward. The output end of the servo motor 109 is fixedly connected to the rotating column 103.
[0027] In practical application, when testing the strength of concrete test block 107 under pressure, a concrete test block 107 is added to the lower pressure block 105 on the other side. When the concrete test block 107 breaks under pressure, the output end of the first hydraulic cylinder 203 retracts and resets, simultaneously driving the lifting block 202 and the upper pressure block 204 to reset. At the same time, the scraper 208 and the brush 301 clean the residual fragments adhering to the surface of the upper pressure block 204, causing them to fall onto the lower pressure block 105. Then, the output end of the second hydraulic cylinder 108 is controlled to retract and reset simultaneously, simultaneously driving the position of the pair of lifting seats 1010 to descend. At this time, after the lower pressure block 105 is disengaged from the support of the lifting seat 1010, it will slide downward in the mounting frame 104 under the action of gravity. The lower pressure block 105 on the left side moves the crushed concrete test block 107 into the box, and the lower pressure block 105 on the right side moves the concrete test block 107 to be tested into the box. Then, the servo motor 109 is controlled. The system operates, causing the rotating column 103 to rotate. The rotating column 103 then rotates the mounting frame 104 180 degrees, swapping the positions of the lower pressure blocks 105 on both sides. During this swapping process, the broken concrete test block 107 is removed from the lower pressure blocks 105. Once the swapping is complete, the output end of the second hydraulic cylinder 108 extends simultaneously, lifting the lower pressure blocks 105 on both sides via the lifting seat 1010. This moves the concrete test block 107 to be tested back below the upper pressure block 204 for subsequent strength testing. Simultaneously, concrete test blocks 107 are added to the lower pressure block 105 on the other side. During the strength testing of the concrete test block 107, the system automatically loads and unloads the concrete test block 107, simultaneously positioning it. This not only improves the testing efficiency of the concrete test block 107 but also ensures the accuracy of the test results.
[0028] like Figure 4-7 As shown, in one embodiment, a parking slot 7 is provided at the rear end of the base 1 and the housing 101. A collection hopper 701 is placed in the parking slot 7. A connecting frame 702 is installed in the housing 101. The connecting frame 702 is located directly above the collection hopper 701. A push block 703 and a cotton block 704 are installed at the lower end of the connecting frame 702.
[0029] In practical application, when the lower pressure block 105 rotates to control the switching positions of the left and right lower pressure blocks 105, the lower pressure block 105 carrying the broken concrete test block 107 will contact the push block 703, and then contact the cotton block 704, pushing the broken concrete test block 107 off the lower pressure block 105, so that the broken concrete test block 107 and dust fall into the collection hopper 701 below, thereby achieving the effect of automatically cleaning the broken concrete test block 107 on the lower pressure block 105.
[0030] like Figure 1-3As shown, in one embodiment, a mounting shell 8 is installed on the upper end of the chassis 101. A plurality of drive shafts 801 are rotatably connected between the mounting shell 8 and the chassis 101. Conveying rollers 802 are installed on the circumferential surface of each drive shaft 801. A conveyor belt 803 is connected between the conveying rollers 802. A plurality of concrete test blocks 107 are placed between the conveyor belts 803. A partition 804 is installed on the circumferential surface of each conveyor belt 803. The partition 804 is used to separate the concrete test blocks 107.
[0031] In practical application, multiple concrete test blocks 107 to be tested are placed between partitions 804. When the lower pressure blocks 105 on both the left and right sides move upward and enter the through holes 106, the drive shaft 801 can be controlled to rotate. The drive shaft 801 drives the conveyor roller 802 to rotate, and the conveyor roller 802 drives the conveyor belt 803 to rotate. The conveyor belt 803 pushes the concrete test blocks 107 to the left through the partitions 804, so that the leftmost concrete test block 107 moves onto the lower pressure block 105 on the right, thus realizing the testing of the concrete test blocks 107. The automatic feeding of test block 107 works as follows: after the concrete test block 107 on the right lower pressure block 105 has been tested, the output end of the second hydraulic cylinder 108 retracts, causing the concrete test blocks 107 on both sides to descend simultaneously. At this time, both the broken concrete test block 107 and the concrete test block 107 to be tested move into the box. As the positions of the lower pressure blocks 105 on the left and right sides switch, the concrete test block 107 to be tested can be moved under the upper pressure block 204, and the testing of the next concrete test block 107 can then be completed.
[0032] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A concrete strength testing device for highway bridge construction, comprising a base (1), characterized in that: A housing (101) is installed on the upper end of the base (1). A support frame (102) is installed inside the housing (101). A rotating column (103) is rotatably connected inside the support frame (102). A mounting frame (104) is installed on the circumferential surface of the rotating column (103). Multiple pressing blocks (105) are slidably connected inside the mounting frame (104). The pressing blocks (105) are located in the through holes (106) opened on the upper end face of the housing (101). A concrete test block (107) is placed on the upper end of the pressing block (105). An extrusion assembly (2) is installed on the upper end of the housing (101). The extrusion assembly (2) includes a guide frame (201), a lifting block (202), an upper pressing block (204), a slide (205), a sliding frame (206), a telescopic shell (207), and a scraper (207). 8) The guide frame (201) is installed on the upper end of the housing (101). The lifting block (202) is slidably connected to the circumferential surface of the guide frame (201). The output end of the first hydraulic cylinder (203) installed on the upper end of the guide frame (201) is fixedly connected to the lifting block (202). The upper pressure block (204) is installed on the lower end of the lifting block (202). A pair of sliding grooves (205) are opened on the lower end surface of the upper pressure block (204). The sliding frame (206) is slidably connected in the sliding groove (205). The telescopic shell (207) is installed on the upper end of the sliding frame (206). A scraper (208) is slidably connected in the telescopic shell (207). A first spring (209) is installed between the scraper (208) and the telescopic groove. The scraper (208) is slidably connected to the lower pressure block (105).
2. The concrete strength testing equipment for highway bridge construction according to claim 1, characterized in that: The upper end of the sliding frame (206) is rotatably connected to a rotating shaft (3) via a rotating seat. A brush (301) and a first gear (302) are mounted on the circumferential surface of the rotating shaft (3). The brush (301) is in contact with the upper pressure block (204). The lower end face of the upper pressure block (204) is provided with a first tooth groove (303). The first gear (302) meshes with the first tooth groove (303).
3. The concrete strength testing equipment for highway bridge construction according to claim 1, characterized in that: The upper pressure block (204) is rotatably connected to a pair of threaded rods (4). The circumferential surface of the threaded rods (4) is threadedly connected to the sliding frame (206). A second gear (401) is installed on the circumferential surface of each threaded rod (4). The second gear (401) meshes with a first rack (402) installed at the lower end of the guide frame (201).
4. The concrete strength testing equipment for highway bridge construction according to claim 1, characterized in that: A protective cover (5) is installed on the upper end of the chassis (101). Multiple second racks (501) are slidably connected inside the protective cover (5). Rubber positioning blocks (502) are installed on the end face of the second racks (501). Multiple rotating frames (504) and multiple sliding rods (503) are installed on the upper end of the chassis (101). Rotating rods (505) are rotatably connected inside each rotating frame (504). A third gear (506) and a fourth gear (507) are installed on the circumference of the rotating rods (505). The third gears (506) mesh with the second racks (501). The fourth gears (507) mesh with the third racks (508) slidably connected on the circumference of the sliding rods (503). Tension springs (509) are installed between the third racks (508) and the chassis (101). Lifting blocks (5010) are installed on the upper end of the third racks (508).
5. The concrete strength testing equipment for highway bridge construction according to claim 4, characterized in that: The protective cover (5) has a pair of observation ports (6) inside, and each observation port (6) is equipped with explosion-proof glass (601). A pair of fixing brackets (602) are installed on the circumferential surface of the protective cover (5). A monitoring probe (603) is installed on the surface of the fixing bracket (602). The monitoring probe (603) corresponds to the position of the observation port (6).
6. The concrete strength testing equipment for highway bridge construction according to claim 1, characterized in that: The lower end of the support frame (102) is equipped with a pair of second hydraulic cylinders (108) and a servo motor (109). The output end of each of the second hydraulic cylinders (108) is equipped with a lifting seat (1010). The lifting seat (1010) is used to push the lower pressure block (105) to move upward. The output end of the servo motor (109) is fixedly connected to the rotating column (103).
7. The concrete strength testing equipment for highway bridge construction according to claim 1, characterized in that: The base (1) and the rear end of the chassis (101) are provided with a parking slot (7), a collection hopper (701) is placed in the parking slot (7), a connecting frame (702) is installed in the chassis (101), the connecting frame (702) is located directly above the collection hopper (701), and a push block (703) and a cotton block (704) are installed at the lower end of the connecting frame (702).
8. The concrete strength testing equipment for highway bridge construction according to claim 7, characterized in that: The upper end of the chassis (101) is equipped with a mounting shell (8), and multiple drive shafts (801) are rotatably connected between the mounting shell (8) and the chassis (101). Conveying rollers (802) are mounted on the circumferential surface of each drive shaft (801), and conveyor belts (803) are connected between the conveying rollers (802). Multiple concrete test blocks (107) are placed between the conveyor belts (803), and partitions (804) are mounted on the circumferential surface of each conveyor belt (803). The partitions (804) are used to separate the concrete test blocks (107).