A bridge hardness testing device

Abstract

The present invention discloses a bridge hardness testing device, comprising a control main unit and a hardness testing platform, wherein a support frame is arranged on the hardness testing platform, and a hydraulic column is arranged on the support frame, and an extrusion plate is arranged at the bottom end of the hydraulic column, a discharge mechanism is arranged on one side of the hardness testing platform, and a loading mechanism is arranged on the side of the top of the hardness testing platform which is perpendicular to the discharge mechanism, the discharge mechanism comprises an accommodating cavity opened on one side of the hardness testing platform, an electric slide rail arranged in the accommodating cavity, and a pushing assembly arranged on the electric slide rail, the loading mechanism comprises a driving motor arranged on the hardness testing platform, a vertical plate arranged on the hardness testing platform, and a driving rod arranged at the output shaft end of the driving motor, the present invention solves the problem that in the process of concrete hardness testing, the replacement of test blocks and the cleaning of gravel need to be handled manually, thereby resulting in slow experimental testing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge detection, and more particularly to a bridge hardness detection device. Background Art

[0002] In bridge engineering, concrete is a key material for constructing the main structure of the bridge. Its performance evaluation is directly related to the safety, durability and service life of the bridge. Among them, the hardness of concrete is one of the important indicators to measure its physical and mechanical properties. It plays an irreplaceable role in evaluating the overall structural strength and bearing capacity of the bridge. Therefore, hardness testing of bridge concrete is an indispensable part of bridge maintenance, inspection and evaluation.

[0003] However, in the current bridge concrete hardness testing process, there are generally problems such as low testing efficiency, complex operation and high dependence on manual labor. These problems seriously restrict the efficiency and accuracy of bridge testing. Specifically, the existing concrete hardness testing method usually relies on manual operation of the concrete pressure tester to complete. During this process, the tester needs to manually place the concrete test block on the pressure plate of the tester, start the tester to load until the test block is destroyed, and record the maximum pressure value at the time of destruction to calculate the hardness.

[0004] Firstly, the process of manually replacing test blocks is time-consuming and labor-intensive. In bridge inspection projects, a large number of concrete test blocks are often required to undergo hardness tests, and manual operation is obviously unable to meet the requirements of efficiency and speed.

[0005] Secondly, after the test block is destroyed, a large amount of gravel and debris will be generated. If these residues are not cleaned up, they will interfere with the subsequent placement and detection of the test blocks and affect the accuracy of the test results. In traditional methods, the cleaning of gravel also needs to be done manually, which not only increases the labor intensity, but also easily leads to test errors due to incomplete cleaning. In order to solve the above problems, we propose a bridge hardness testing device. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] In view of the problems existing in the prior art, the present invention provides a bridge hardness testing device to solve the technical problem mentioned in the background technology that during the concrete hardness testing process, the replacement of test blocks and the cleaning of gravel require manual processing, resulting in slow experimental testing efficiency.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bridge hardness testing device, comprising a control main unit and a hardness testing platform, a support frame is arranged on the hardness testing platform, a hydraulic column is arranged on the support frame, and an extrusion plate is arranged at the bottom end of the hydraulic column, a discharge mechanism is arranged on one side of the hardness testing platform, and a loading mechanism is arranged on the side of the top of the hardness testing platform which is perpendicular to the discharge mechanism, the discharge mechanism comprises a accommodating cavity opened on one side of the hardness testing platform, an electric slide rail arranged in the accommodating cavity, and a pushing assembly arranged on the electric slide rail, the loading mechanism comprises a driving motor arranged on the hardness testing platform, a vertical plate arranged on the hardness testing platform, and a driving rod arranged at the output shaft end of the driving motor, a strip groove is arranged on the driving rod, and a loading assembly is movably installed in the strip groove.

[0010] The present invention is further configured such that a limit stop bar is provided on the hardness testing platform, and the limit stop bar is U-shaped, a sliding groove is provided on the hardness testing platform at the axis in the length direction of the limit stop bar, and the sliding groove is slidably matched with the pushing component.

[0011] The present invention is further configured such that the pushing assembly includes a connecting seat fixedly connected to the slide table on the electric slide rail, and the connecting seat is slidably matched with the sliding groove, and also includes an L seat arranged on the connecting seat, and a card plate arranged on one side of the top end of the L seat.

[0012] The present invention is further configured such that a guide groove is provided on the vertical plate, and the loading assembly and the guide groove are slidably installed, the loading assembly includes an anti-rotation column slidably installed in the guide groove, and also includes a cylinder arranged at one end of the anti-rotation column and slidably matched with the strip groove, and a loading piece arranged at an end of the cylinder away from the anti-rotation column.

[0013] The present invention is further configured such that the loading member includes a T-shaped seat fixedly connected to one end of the cylinder, and a push plate and a cleaning plate arranged at both ends of the T-shaped seat, and a scraper strip is arranged at the lower end of the cleaning plate away from the push plate.

[0014] The present invention is further configured such that the push plate, cleaning plate and T-shaped seat are arranged in a U shape to limit the test block, one end of the cleaning plate away from the T-shaped seat matches one end of the limit stop bar, and the bottom end of the push plate is higher than the top end of the limit stop bar.

[0015] The present invention is further configured such that a telescopic cavity is opened at one end of the strip groove close to the axis of the rotating shaft, and a compression spring and a telescopic rod are arranged in the telescopic cavity, and a resistance arc surface is arranged at one end of the telescopic rod away from the compression spring, and the resistance arc surface matches the cylindrical side wall.

[0016] The present invention is further configured such that both sides of the guide groove and the upper end notch thereof are matched with the anti-rotation column for limiting, and the width of the lower end notch of the guide groove is greater than the anti-rotation column.

[0017] The present invention is further configured such that the hydraulic column, the drive motor and the electric slide rail are all electrically connected to the control host.

[0018] The present invention is further configured as follows: the hardness testing table is provided with a support table for placing test blocks, and both sides of the support table are provided with material unloading guide slopes, a gravel collecting chamber is provided on the end of the hardness testing table away from the discharge mechanism, and the gravel collecting chamber is connected with the material unloading guide slope and one end of the support table, a cleaning port is provided on one side of the gravel collecting chamber, and a door panel is rotatably installed at the cleaning port.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides a bridge hardness detection device, which has the following beneficial effects:

[0021] 1. The present invention arranges multiple test blocks to be tested in sequence in the limit stop bar, and then drives the pushing assembly to push the test block through the electric slide rail, so that the test blocks to be tested can be matched with the feeding mechanism in sequence, and then the feeding mechanism pushes the matching test blocks to the bottom of the extrusion plate. Therefore, through the combination of the discharge mechanism and the feeding mechanism, the purpose of automatic feeding is achieved, the trouble of manual feeding is saved, thereby improving work efficiency, and the placement position is more accurate than that of manual feeding, thereby improving the accuracy of the test data.

[0022] 2. The present invention drives the driving rod to rotate by driving the motor, so that the feeding assembly moves in the guide groove, thereby pushing the test block to the bottom of the extrusion plate. When the feeding assembly is feeding the test block, the cleaning plate and scraper on one side thereof can clean the gravel that has been tested before, thereby eliminating the trouble of manually cleaning the gravel.

[0023] 3. The present invention arranges an extrusion spring and a telescopic rod on the driving rod, and the width of the notch at the lower end of the guide groove is greater than the anti-rotation column, so that when the driving rod drives the loading assembly to move along the guide groove, the cleaning plate and the scraper are in close contact with the surface of the support platform, so that the gravel can be better cleaned, thereby improving the data accuracy of subsequent experiments.

[0024] 4. The present invention provides material discharge guide slopes on both sides of the support platform, so that when the test block is broken during the test, it can directly slide into the gravel collection chamber through the material discharge guide slope, which is convenient for one-time cleaning later. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the bridge hardness testing device.

[0026] Figure 2 This is a schematic diagram of the structure of the discharging mechanism and the loading mechanism of the bridge hardness testing device.

[0027] Figure 3 This is a schematic diagram of the structure of the hardness testing platform of the bridge hardness testing device.

[0028] Figure 4 This is a schematic diagram of the driving component structure of the bridge hardness testing device.

[0029] Figure 5 This is a schematic diagram of the loading component structure of the bridge hardness testing device.

[0030] Figure 6 This is a schematic diagram of the cross-sectional structure of the driving rod of the bridge hardness detection device.

[0031] In the figure: 1. Control host; 2. Hardness testing platform; 201. Accommodation cavity; 202. Sliding groove; 203. Support platform; 204. Unloading guide slope; 205. Gravel collection cavity; 206. Door panel; 3. Support frame; 4. Hydraulic column; 5. Extrusion plate; 6. Discharging mechanism; 601. Electric slide rail; 7. Loading mechanism; 701. Driving motor; 702. Vertical plate; 703. Driving rod; 704. Bar Groove; 705, guide groove; 706, telescopic cavity; 8, pushing assembly; 801, connecting seat; 802, L seat; 803, clamping plate; 9, feeding assembly; 901, anti-rotation column; 902, cylinder; 10, limit stop strip; 11, feeding piece; 1101, T-shaped seat; 1102, push plate; 1103, cleaning plate; 1104, scraper strip; 12, extrusion spring; 13, telescopic rod; 14, resisting arc surface. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0034] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0035] See also Figure 1-6A bridge hardness testing device includes a control host 1 and a hardness testing platform 2, a support frame 3 is arranged on the hardness testing platform 2, a hydraulic column 4 is arranged on the support frame 3, and an extrusion plate 5 is arranged at the bottom end of the hydraulic column 4, a discharge mechanism 6 is arranged on one side of the hardness testing platform 2, the discharge mechanism 6 is used to arrange concrete test blocks to be tested, and a feeding mechanism 7 is arranged on the top of the hardness testing platform 2 at a side perpendicular to the discharge mechanism 6. The discharge mechanism 6 pushes the arranged concrete test blocks to be tested to the feeding position of the feeding mechanism 7, and then pushes them to the bottom of the extrusion plate 5 through the feeding mechanism 7, starts the hydraulic column 4, and drives the extrusion plate 5 to be pressed down by the hydraulic column 4 to perform hardness testing on the concrete test blocks.

[0036] The discharge mechanism 6 includes a accommodating cavity 201 opened on one side of the hardness testing platform 2, and also includes an electric slide rail 601 arranged in the accommodating cavity 201, and a pushing component 8 arranged on the electric slide rail 601. The pushing component 8 is fixedly installed on the top of the slide platform of the electric slide rail 601 by bolts. A limit stop bar 10 is arranged on the hardness testing platform 2, and the limit stop bar 10 is arranged in a U shape, which is used to linearly arrange the concrete test blocks to be tested. The U-shaped limit stop bar 10 matches the concrete test blocks, so that the concrete test blocks to be tested can move in a straight line under the push of the pushing component 8 to avoid displacement and deviation. A sliding groove 202 is opened on the hardness testing platform 2 at the axis of the length direction of the limit stop bar 10, and the sliding groove 202 is slidably matched with the pushing component 8.

[0037] Furthermore, the concrete test blocks to be tested are linearly arranged in the U-shaped area of ​​the limit stop bar 10. In order to ensure that the feeding mechanism 7 can smoothly push the concrete test blocks for feeding, the electric slide rail 601 pushes the linearly arranged concrete test blocks toward the feeding mechanism 7 through the pushing component 8, so that the concrete test blocks in the linearly arranged concrete test blocks away from the pushing component 8 collide with the feeding mechanism 7, thereby completing the matching.

[0038] The feeding mechanism 7 includes a driving motor 701 arranged on the hardness testing platform 2, a vertical plate 702 arranged on the hardness testing platform 2, and a driving rod 703 arranged on the output shaft end of the driving motor 701, a strip groove 704 is provided on the driving rod 703, and a feeding component 9 is movably installed in the strip groove 704, a guide groove 705 is provided on the vertical plate 702, and the feeding component 9 and the guide groove 705 are slidably installed, and the guide groove 705 is a rectangular groove surrounded by a circle. The driving motor 701 is fixedly installed on the top of the hardness testing platform 2, the vertical plate 702 is welded to the hardness testing platform 2, and the output shaft of the driving motor 701 passes through one end of the vertical plate 702 and is fixedly connected to the driving rod 703.

[0039] Specifically, when the driving motor 701 rotates, it drives the driving rod 703 to rotate. When the driving rod 703 rotates, it rotates in a circular shape. When the driving rod 703 drives the loading assembly 9 to move, the loading assembly 9 can only move along the path of the guide groove 705. Therefore, when the loading assembly 9 is driven by the driving rod 703, the loading assembly 9 moves left and right in the strip groove 704, wherein the loading assembly 9 first moves horizontally along the movement path of the driving rod 703 in the guide groove 705, and moves the concrete test block matched with the loading assembly 9 to the bottom of the extrusion plate 5, that is, the extrusion test point. After the loading assembly 9 moves the concrete test block to the bottom of the extrusion plate 5, the loading assembly 9 Located at the first corner of the guide groove 705, as the driving rod 703 continues to rotate, the loading assembly 9 moves vertically upward along the guide groove 705 until the loading assembly 9 is separated from the concrete test block, that is, the position of the loading assembly 9 is higher than the top of the concrete test block, and the loading assembly 9 is located at the second corner of the guide groove 705. As the driving rod 703 continues to rotate, the loading assembly 9 moves horizontally away from the extrusion test point, and then after passing the third corner, it returns to the origin along the guide groove 705. At this time, the loading assembly 9 is matched with the limit stop bar 10 again. When the electric slide rail 601 is started, the concrete test block is pushed to the contact with the loading assembly 9 through the pushing assembly 8, and the next loading can be carried out.

[0040] The hydraulic column 4 , the driving motor 701 and the electric slide rail 601 are all electrically connected to the control host 1 , so that the activation of the hydraulic column 4 , the driving motor 701 and the electric slide rail 601 can be operated through the control host 1 , thereby achieving full automation.

[0041] The pushing assembly 8 includes a connecting seat 801 fixedly connected to the upper slide of the electric slide rail 601, and the connecting seat 801 is slidably matched with the sliding groove 202, and also includes an L seat 802 arranged on the connecting seat 801, and a clamping plate 803 arranged on one side of the top of the L seat 802.

[0042] In this embodiment, through the setting of the L-seat 802, a reinforcing rib is provided on the side of the L-seat 802 away from the concrete test block, thereby improving the strength of the L-seat 802 and avoiding deformation when the electric slide rail 601 drives it to push the concrete test block to move. At the same time, the bottom end of the L-seat 802 makes its contact surface at the top of the sliding groove 202 larger, thereby improving the stability of the L-seat 802.

[0043] Furthermore, by setting the clamping plate 803, the clamping plate 803 is flush with the top of the concrete test block, thereby limiting the concrete test block, so that the thrust of the L seat 802 can be more uniform when it is pushed.

[0044] The loading assembly 9 includes an anti-rotation column 901 slidably installed in the guide groove 705, a cylinder 902 arranged at one end of the anti-rotation column 901 and slidably matched with the strip groove 704, and a loading piece 11 arranged at an end of the cylinder 902 away from the anti-rotation column 901.

[0045] The loading member 11 includes a T-shaped seat 1101 fixedly connected to one end of the cylinder 902 , and a push plate 1102 and a cleaning plate 1103 arranged at both ends of the T-shaped seat 1101 . A scraper strip 1104 is arranged at the lower end of the cleaning plate 1103 away from the push plate 1102 .

[0046] In this embodiment, the anti-rotation column 901 moves in the guide groove 705, so that the loading piece 11 always maintains a horizontal state, that is, a matching state with the concrete test block. The length of the cylinder 902 is the same as the thickness of the driving rod 703, so that the driving rod 703 is located between the T-shaped seat 1101 and the anti-rotation column 901, so that the loading piece 11 will not separate from the guide groove 705 during the movement.

[0047] Furthermore, the initial position of the loading member 11 matches the limit stop bar 10, the cleaning plate 1103 is welded to one end of the T-shaped "one" part of the T-shaped seat 1101 close to the extrusion test point, and the hardness testing table 2 is provided with a support table 203 for placing the test block. When the cleaning plate 1103 is in the initial position, the bottom end of the cleaning plate 1103 fits the top end of the support table 203, so that when it moves horizontally with the driving rod 703 to load the concrete test block, it can use the scraper bar 1104 to clean the previously tested test blocks and gravel through thrust, so that the subsequent concrete test blocks are ready for the experimental position.

[0048] The push plate 1102 , the cleaning plate 1103 and the T-shaped seat 1101 are arranged in a U shape to limit the test block. The end of the cleaning plate 1103 away from the T-shaped seat 1101 matches one end of the limit stop bar 10 , and the bottom end of the push plate 1102 is higher than the top end of the limit stop bar 10 .

[0049] At the initial position, the concrete test block is pushed by the L seat 802 and stuck in the U-shaped area formed by the push plate 1102, the cleaning plate 1103 and the T-shaped seat 1101. Then, through the action of the driving rod 703, the concrete test block in the area of ​​the push plate 1102 is moved and pushed to the extrusion test point. The push plate 1102 is designed to be in the middle area of ​​the concrete test block, so that it can move smoothly when pushing the concrete test block for loading. If the push plate 1102 is set at the upper or lower end of the concrete test block, the concrete test block will deviate and fall sideways when it is translated for loading.

[0050] A telescopic cavity 706 is provided at one end of the strip groove 704 close to the axis of the rotating shaft, and a compression spring 12 and a telescopic rod 13 are arranged in the telescopic cavity 706 . A resisting arc surface 14 is provided at one end of the telescopic rod 13 away from the compression spring 12 , and the resisting arc surface 14 matches the side wall of the cylinder 902 .

[0051] Both sides of the guide groove 705 and the groove at the upper end thereof are matched with the anti-rotation column 901 for limiting, and the width of the groove at the lower end of the guide groove 705 is greater than that of the anti-rotation column 901 .

[0052] In this embodiment, when the loading piece 11 is in the initial position, the squeezing spring 12 is at zero pressure, that is, the arc surface 14 is zero-contact with the side wall of the cylinder 902, but no pressure is generated. As the driving rod 703 rotates to drive the loading piece 11 to move, the loading piece 11 moves in the strip groove 704 toward the output shaft direction of the driving motor 701, thereby squeezing and pushing the telescopic rod 13, so that the telescopic rod 13 retracts into the telescopic cavity 706. Under the interaction of forces, the squeezing spring 12 pushes the telescopic rod 13 to squeeze the loading piece 11, so that the loading piece 11 is close to the top of the support platform 203, so that the scraper 1104 can better clean the gravel on the support platform 203, ensuring that in subsequent experiments, the test block is not affected by the gravel after being placed, thereby improving the accuracy of the detection data.

[0053] It should be noted that a raised seat is provided under the driving motor 701 so that the output shaft height of the driving motor 701 is greater than the bottom position of the feeding component 9 during the movement process, so that there is enough space inside the driving rod 703 to open the telescopic cavity 706.

[0054] A material discharge guiding slope 204 is provided on both sides of the support platform 203, a gravel collecting chamber 205 is provided on the end of the hardness testing platform 2 away from the discharge mechanism 6, and the gravel collecting chamber 205 is connected with the material discharge guiding slope 204 and one end of the support platform 203, a cleaning port is provided on one side of the gravel collecting chamber 205, and a door panel 206 is rotatably installed at the cleaning port.

[0055] In this embodiment, a material discharge guide slope 204 is provided on both sides of the support platform 203, so that after the test block is crushed, the crushed stone can slide along the material discharge guide slope 204 into the crushed stone collection chamber 205 for collection. After the experiment is completed, the door panel 206 can be opened to clean the crushed stone in the crushed stone collection chamber 205.

[0056] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A bridge hardness testing device, comprising a control host (1) and a hardness testing platform (2), characterized in that: The hardness testing platform (2) is provided with a support frame (3), and the support frame (3) is provided with a hydraulic column (4), and the bottom end of the hydraulic column (4) is provided with an extrusion plate (5); A discharge mechanism (6) is provided on one side of the hardness testing platform (2), and a loading mechanism (7) is provided on the side of the top of the hardness testing platform (2) which is perpendicular to the discharge mechanism (6); The discharge mechanism (6) comprises a receiving cavity (201) opened on one side of the hardness testing platform (2), an electric slide rail (601) arranged in the receiving cavity (201), and a pushing component (8) arranged on the electric slide rail (601); The feeding mechanism (7) comprises a driving motor (701) arranged on the hardness testing platform (2), and a vertical plate (702) arranged on the hardness testing platform (2); an output shaft of the driving motor (701) passes through one end of the vertical plate (702) and is fixedly connected to a driving rod (703); a strip groove (704) is formed on the driving rod (703), and a feeding assembly (9) is movably installed in the strip groove (704); A limit stop bar (10) is arranged on the hardness testing platform (2), and the limit stop bar (10) is arranged in a U shape; A sliding groove (202) is provided on the hardness testing platform (2) at the axis in the length direction of the limit stop bar (10), and the sliding groove (202) is slidably matched with the pushing component (8); The pushing assembly (8) comprises a connecting seat (801) fixedly connected to the upper slide of the electric slide rail (601), and the connecting seat (801) is slidably matched with the sliding groove (202), and the pushing assembly (8) also comprises an L seat (802) arranged on the connecting seat (801), and a clamping plate (803) arranged on one side of the top end of the L seat (802); The vertical plate (702) is provided with a guide groove (705), and the guide groove (705) is a rectangular groove that surrounds a circle, and the loading assembly (9) and the guide groove (705) are slidably installed; The feeding assembly (9) comprises an anti-rotation column (901) slidably mounted in the guide groove (705), a cylinder (902) arranged at one end of the anti-rotation column (901) and slidably matched with the strip groove (704), and a feeding piece (11) arranged at one end of the cylinder (902) away from the anti-rotation column (901); The loading member (11) comprises a T-shaped seat (1101) fixedly connected to one end of the cylinder (902), and a push plate (1102) and a cleaning plate (1103) arranged at both ends of the "-" field on the T-shaped seat (1101); A scraper strip (1104) is provided at the lower end of the cleaning plate (1103) away from the push plate (1102); The push plate (1102), the cleaning plate (1103) and the T-shaped seat (1101) are arranged in a U shape and are used to limit the position of the concrete test block; One end of the cleaning plate (1103) away from the T-shaped seat (1101) matches one end of the limit stop bar (10); The bottom end of the push plate (1102) is higher than the top end of the limit stop bar (10); The concrete test block is pushed by the L seat (802) and is stuck in the U-shaped area formed by the push plate (1102), the cleaning plate (1103) and the T-shaped seat (1101). Then, the concrete test block is moved and pushed to the extrusion test point by the action of the driving rod (703).

2. A bridge hardness detection device according to claim 1, characterized in that: A telescopic cavity (706) is provided at one end of the strip groove (704) close to the axis of the rotating shaft, and a compression spring (12) and a telescopic rod (13) are provided in the telescopic cavity (706); An end of the telescopic rod (13) away from the extrusion spring (12) is provided with a contact arc surface (14), and the contact arc surface (14) matches the side wall of the cylinder (902).

3. A bridge hardness detection device according to claim 2, characterized in that: Both sides of the guide groove (705) and the notch at the upper end thereof are matched with the anti-rotation column (901) for limiting, and the width of the notch at the lower end of the guide groove (705) is greater than that of the anti-rotation column (901).

4. A bridge hardness detection device according to claim 3, characterized in that: The hydraulic column (4), the driving motor (701) and the electric slide rail (601) are all electrically connected to the control host (1).

5. A bridge hardness detection device according to claim 4, characterized in that: The hardness testing platform (2) is provided with a support platform (203) for placing a test block, and both sides of the support platform (203) are provided with material unloading guide slopes (204); A crushed stone collection chamber (205) is provided on one end of the hardness testing platform (2) away from the material discharging mechanism (6), and the crushed stone collection chamber (205) is connected to the material discharging guide slope (204) and one end of the support platform (203); A cleaning port is provided on one side of the gravel collection chamber (205), and a door panel (206) is rotatably mounted on the cleaning port.

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