A road construction cement performance detection device and method

Abstract

The present invention discloses a device and method for testing cement performance in highway construction, which relate to the technical field of cement strength testing. The device comprises a mechanical testing platform and a hydraulic device, wherein the hydraulic device is arranged on the top of the mechanical testing platform, a pressure sensor is arranged at the output end of the hydraulic device, a testing plate is fixedly installed on the top of the mechanical testing platform, a fixture frame is slidably installed on the top of the test plate, a fixture table is fixedly installed on the inner wall of the fixture frame, a receiving groove is provided on the top of the test plate, a tooth plate is fixedly installed on the bottom of the inner wall of the receiving groove, and a hollow cement plate is arranged inside the fixture table; a testing plate, wherein the testing plate is slidably installed on the inner wall of the fixture table, a synchronization plate forms a limit constraint on the fixture table, and thereby the fixture table maintains an appropriate degree of tightening for the hollow cement plate. The appropriate degree of tightening can prevent the cement plate from falling off or splashing during loading due to excessive loose tightening, thereby improving the safety of the testing process.

Description

Technical Field

[0001] The present invention relates to the technical field of cement strength detection, in particular to a device and method for detecting cement performance in highway construction. Background Art

[0002] Cement performance testing equipment for highway construction usually consists of a mechanical test bench, hydraulic equipment, protective components, and feeding components, and the hollow cement slabs being tested are usually standard parts with fixed dimensions.

[0003] Patent announcement number CN217638456U relates to a device for testing the flexural properties of cement, comprising a testing platform, a mounting frame mounted on the testing platform, a protective frame mounted on the mounting frame, a hydraulic cylinder mounted on the testing platform corresponding to the protective frame, the telescopic end of the hydraulic cylinder extending into the protective frame and mounted with two symmetrical loading platforms for the related hydraulic cylinders. The beneficial effects of this patent are as follows: a slidable clamping plate is provided to adjust the distance between the two clamping plates to clamp and fix the cement body, the structure is simple, and the convenience of operation is improved; by providing a protective frame, the debris after the cement body is folded can be prevented from splattering everywhere, and the debris can be collected in the protective frame; by providing a scale line, the distance between the two clamping plates can be easily observed and adjusted, ensuring that the cement body can be clamped in the center and the measurement accuracy is guaranteed.

[0004] In the above patent, a protective frame is provided to prevent the debris from splattering after the cement body is folded, and the debris is collected in the protective frame. The scale line is provided to facilitate observation and adjustment of the distance between the two clamping plates, ensuring that the cement body can be clamped in the center and the measurement accuracy. However, it is difficult to ensure that the hollow cement board is properly tightened. If the hollow cement board is not tightened firmly, it will shift during the inspection process, causing the corners of the hollow cement board to crack due to stress concentration at the moment of inspection, thereby threatening the safety of the operator. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device and method for detecting cement performance in highway construction, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a highway construction cement performance testing device, comprising a mechanical test bench and a hydraulic device, wherein the hydraulic device is arranged on the top of the mechanical test bench, a pressure sensor is provided at the output end of the hydraulic device, a test plate is fixedly installed on the top of the mechanical test bench, a fixture frame is slidably installed on the top of the test plate, a fixture table is fixedly installed on the inner wall of the fixture frame, a receiving groove is provided on the top of the test plate, a tooth plate is fixedly installed on the bottom of the inner wall of the receiving groove, and a hollow cement plate is provided inside the fixture table; a testing plate, The detection plate is slidably installed on the inner wall of the fixture table, and the detection plate is used to detect the fastening position of the hollow cement slab; the hollow plate, the hollow plate is fixed through the inner and outer walls of the fixture table, and the hydraulic equipment is used to apply a stable bending force to the hollow cement slab; the linkage plate, the linkage plate is slidably installed on the inner wall of the hollow plate, and the fixture table is used to fasten the hollow cement slab; the synchronization plate, the synchronization plate is slidably installed on the inner wall of the hollow plate, and the tooth plate is used to limit the synchronization plate, and the synchronization plate forms a limiting constraint on the fixture table, so that the fixture table maintains an appropriate degree of fastening to the hollow cement slab.

[0007] According to the above technical solution, a positioning groove is provided on the top of the hollow cement slab, a positioning rod is slidably passed through the top of the fixture table, the bottom of the positioning rod is set as an inclined surface, and a linkage rod is fixedly installed on the left side of the fixture frame.

[0008] According to the above technical solution, the bottom of the positioning rod is in conflict with the hollow cement board, and a second spring is provided between the detection plate and the fixture table. The detection plate can be supported by the second spring. A first spring is provided between the positioning rod and the fixture table. The positioning rod moves upward to apply an extrusion force to the first spring. The first spring is deformed and accumulates force due to the extrusion of the positioning rod. After the positioning groove is aligned with the positioning rod, the positioning rod can be driven to reset by the first spring. The bottom of the synchronization plate is set as an inclined surface.

[0009] According to the above technical solution, a spring three is provided between the linkage plate and the hollow plate, and the linkage plate can be supported by the spring three. A spring four is provided between the synchronization plate and the hollow plate, and the synchronization plate can be supported by the spring four. A rubber ring one is provided between the linkage plate and the hollow plate, and the sealing between the linkage plate and the hollow plate can be improved by the rubber ring one. A rubber ring two is provided between the synchronization plate and the hollow plate, and the sealing between the synchronization plate and the hollow plate can be improved by the rubber ring two. The positioning rod moves downward to reset and contact the inner wall of the positioning groove, thereby ensuring that the hollow cement plate is in the center position inside the fixture table. The gas inside the hollow plate can be compressed to ensure that the fixture table can be smoothly reset.

[0010] According to the above technical solution, a reduction component for simulating the installation state of a hollow cement slab is provided on the top of the mechanical test bench, and a loading component is provided on the top of the test plate. The reduction component includes a placement groove, a placement rod, a placement spring and a simulation frame. The placement groove is opened on the top of the mechanical test bench, the placement rod is fixedly installed on the bottom of the inner wall of the placement groove, and the simulation frame is slidably installed on the circumferential surface of the placement rod. The placement spring is arranged between the placement groove and the simulation frame. The simulation frame moves upward to apply a pulling force to the placement spring. The placement spring is deformed and stored force by the pulling of the simulation frame. After the placement frame is out of contact with the linkage rod, the simulation frame can be driven to reset by the placement spring.

[0011] According to the above technical solution, the reduction component also includes a placement hole, a placement frame, a circular hole and a connecting plate. The placement hole is opened on the circumferential surface of the simulation frame, the placement frame is fixedly installed on the inner wall of the placement hole, the circular hole is opened on the top of the test plate, and the connecting plate is fixedly installed on the bottom of the simulation frame. The simulation frame moves upward to contact the hollow cement board and thus simulates the actual installation state of the hollow cement board.

[0012] According to the above technical solution, the simulation frame contacts the inner wall of the circular hole, the bottom of the placement frame is set as an arc surface, the front side of the connecting plate is set as an arc surface, and the simulation frame moves downward to reset and disengage from the inner wall of the hollow cement slab.

[0013] According to the above technical solution, the loading assembly includes a supporting hole, a supporting bracket, a supporting spring, a rotating rod, a supporting cylinder and a rubber plate. The supporting cylinder moves away from the simulation frame to break away from contact with the hollow cement plate. The supporting hole is opened at the top of the test plate, and the supporting bracket is slidably installed on the inner wall of the supporting hole. The supporting spring is arranged between the supporting hole and the supporting bracket. The rotating rod rotates through the inner and outer walls of the supporting bracket. The supporting cylinder is fixedly installed on the circumferential surface of the rotating rod. The rubber plate is fixedly installed on the inner wall of the supporting hole. The supporting bracket can be supported by the supporting spring.

[0014] According to the above technical solution, the rubber plate is in conflict with the support bracket, the right rear side of the support bracket is set as a slope, and the supporting tube is in conflict with the hollow cement slab to prevent the hollow cement slab from having excessive friction with the supporting tube during loading, thereby squeezing the supporting tube to deviate from its initial position.

[0015] A method for detecting cement performance of highway construction using the above-mentioned cement performance detection device for highway construction includes the following steps:

[0016] Step 1: The hollow cement slab is pushed into the fixture by human power. The hollow cement slab contacts the inclined surface at the bottom of the positioning rod and squeezes the positioning rod. The positioning rod is squeezed by the hollow cement slab and moves upward.

[0017] Step 2: The positioning rod moves upward to apply a squeezing force to the spring 1. The spring 1 is squeezed by the positioning rod to produce deformation and accumulate force. After the positioning groove is aligned with the positioning rod, the positioning rod moves downward and resets under the elastic force of the spring 1.

[0018] Step 3: The positioning rod moves downward and resets to contact the inner wall of the positioning groove to ensure that the hollow cement slab is in the center position inside the fixture table. After the hollow cement slab is clamped, the hydraulic equipment is started to move downward to apply a stable bending force to the hollow cement slab;

[0019] Step 4: The pressure sensor inside the hydraulic equipment can detect the bending force borne by the hollow cement slab and transmit the detection data to the external detection equipment to complete the detection work.

[0020] The present invention provides a cement performance detection device for highway construction. It has the following beneficial effects:

[0021] (1) This invention ensures that the hollow cement board is in the center of the fixture table by moving the positioning rod downward to reset and contact the inner wall of the positioning groove. The center positioning of the hollow cement board can avoid uneven force caused by offset, ensure that the test data can truly reflect the bending resistance of the hollow cement board, reduce human operation errors, and form a limit constraint on the fixture table through the synchronization plate, so that the fixture table maintains an appropriate degree of tightening for the hollow cement board. The appropriate degree of tightening can prevent the cement board from falling off or splashing during the loading process due to excessive looseness, thereby improving the safety of the detection process.

[0022] (2) This invention simulates the actual installation state of the hollow cement slab by moving the simulation frame upward to contact the hollow cement slab. The simulation frame can reproduce the actual load conditions such as vertical support force and interface friction force that the hollow cement slab bears in highway engineering by dynamically contacting the hollow cement slab, thereby improving the authenticity of the test data.

[0023] (3) This invention solves the problem of jamming caused by deformation of the hollow cement board by causing the simulation frame to move downward and reset under the elastic force of the installation spring. The simulation frame moves downward and resets to break away from the contact with the inner wall of the hollow cement board. The installation spring drives the simulation frame to break away from the contact with the inner wall of the hollow cement board, thereby solving the jamming problem caused by deformation of the hollow cement board and facilitating the removal of the hollow cement board.

[0024] (4) In this invention, the simulation frame moves downward and resets, thereby driving the placement frame to move downward and reset. The placement frame moves downward and resets, and knocks the placement rod to generate vibration. The vibration knocking can prevent the simulation frame from getting stuck due to the accumulation of hollow cement slab debris.

[0025] (5) This invention moves the support tube away from the simulation frame to break away from the contact with the hollow cement board. The bending resistance test needs to simulate the natural bending of the cement board under load. If the support tube is not separated, its own residual supporting force will offset part of the bending load. By breaking away from the contact with the hollow cement board, the distortion of the measured flexural strength can be prevented. By moving the support frame to the rear side and resetting, the bottom of the hollow cement board is supported to facilitate the loading of the hollow cement board. The support of the support frame can provide a stable bearing surface, thereby preventing errors in the loading process of the hollow cement board.

[0026] (6) This invention uses a rubber plate to contact the support frame and limit the support frame, thereby preventing the hollow cement slab from being excessively squeezed by the support tube during loading, thereby squeezing the support tube from deviating from its initial position. By limiting the support frame, it is possible to prevent excessive friction from causing the support tube to move laterally and produce a hard collision, thereby protecting the support tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of a half-section structure of a fixture table according to the present invention;

[0029] Figure 3 This is a schematic diagram of a half-section structure of a test board of the present invention;

[0030] Figure 4 For the present invention Figure 3 A schematic diagram of the structure of part A in the middle;

[0031] Figure 5 This is a schematic diagram of the hollow cement board and the positioning groove structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the position structure of the simulation frame and the connecting plate of the present invention;

[0033] Figure 7 It is a schematic diagram of the position structure of the supporting hole and the supporting bracket of the present invention.

[0034] In the figure: 1. Mechanical test bench; 2. Test plate; 3. Fixture frame; 4. Fixture table; 5. Receiving groove; 6. Tooth plate; 7. Hollow cement board; 8. Positioning groove; 9. Positioning rod; 10. Testing plate; 11. Hollow board; 12. Linkage plate; 13. Synchronous board; 14. Linkage rod; 151. Placement groove; 152. Placement rod; 153. Placement spring; 154. Simulation frame; 155. Placement hole; 156. Placement frame; 157. Round hole; 158. Connecting plate; 161. Support hole; 162. Support frame; 163. Support spring; 164. Rotating rod; 165. Support cylinder; 166. Rubber plate. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figures 1-6 , one embodiment of the present invention is: a highway construction cement performance testing device, including a mechanical test bench 1 and a hydraulic device, the hydraulic device is arranged on the top of the mechanical test bench 1, the output end of the hydraulic device is provided with a pressure sensor, the top of the mechanical test bench 1 is fixedly installed with a test plate 2, the top of the test plate 2 is slidably installed with a fixture frame 3, the inner wall of the fixture frame 3 is fixedly installed with a fixture table 4, the top of the test plate 2 is provided with a receiving groove 5, the bottom of the inner wall of the receiving groove 5 is fixedly installed with a tooth plate 6, and the inside of the fixture table 4 is provided with a hollow cement board 7; a detection plate 10, the detection plate 10 is slidably installed on the inner wall of the fixture table 4, Plate 10 is used to detect the fastening position of the hollow cement slab 7; hollow plate 11, the hollow plate 11 is fixed through the inner and outer walls of the fixture table 4, and the hydraulic equipment is used to apply a stable bending force to the hollow cement slab 7; linkage plate 12, the linkage plate 12 is slidably installed on the inner wall of the hollow plate 11, and the fixture table 4 is used to fasten the hollow cement slab 7; synchronization plate 13, the synchronization plate 13 is slidably installed on the inner wall of the hollow plate 11, and the tooth plate 6 is used to limit the synchronization plate 13. Through the appropriate degree of tightening, the hollow cement slab 7 can be prevented from falling off or splashing during the loading process due to excessive loose tightening, thereby improving the safety of the detection process.

[0037] A positioning groove 8 is provided on the top of the hollow cement slab 7, a positioning rod 9 is slidably passed through the top of the clamping table 4, the bottom of the positioning rod 9 is set as an inclined surface, and a linkage rod 14 is fixedly installed on the left side of the clamping frame 3. The bottom of the positioning rod 9 is set as an inclined surface to reduce the friction force when the hollow cement slab 7 conflicts with the positioning rod 9.

[0038] The bottom of the positioning rod 9 is in conflict with the hollow cement board 7. A spring 2 is provided between the detection plate 10 and the fixture table 4. The detection plate 10 can be supported by the spring 2. A spring 1 is provided between the positioning rod 9 and the fixture table 4. The positioning rod 9 moves upward to apply an extrusion force to the spring 1. The spring 1 is deformed and accumulates force due to the extrusion of the positioning rod 9. After the positioning groove 8 is aligned with the positioning rod 9, the positioning rod 9 can be driven to reset by the spring 1. The bottom of the synchronization plate 13 is set to an inclined surface.

[0039] A spring three is provided between the linkage plate 12 and the hollow plate 11, and the linkage plate 12 can be supported by the spring three. A spring four is provided between the synchronization plate 13 and the hollow plate 11, and the synchronization plate 13 can be supported by the spring four. A rubber ring one is provided between the linkage plate 12 and the hollow plate 11, and the sealing between the linkage plate 12 and the hollow plate 11 can be improved by the rubber ring one. A rubber ring two is provided between the synchronization plate 13 and the hollow plate 11, and the sealing between the synchronization plate 13 and the hollow plate 11 can be improved by the rubber ring two. The positioning rod 9 moves downward to reset and contact the inner wall of the positioning groove 8, thereby ensuring that the hollow cement plate 7 is in the center position inside the fixture table 4. The center positioning of the hollow cement plate 7 can avoid uneven force caused by offset, and ensure that the test data can truly reflect the bending resistance of the hollow cement plate 7. The gas inside the hollow plate 11 can be compressed to ensure that the fixture table 4 can be smoothly reset.

[0040] A method for detecting cement performance of highway construction using the above-mentioned cement performance detection device for highway construction includes the following steps:

[0041] Step 1: The hollow cement board 7 is pushed into the fixture table 4 by human power. The hollow cement board 7 enters the fixture table 4 and contacts the inclined surface at the bottom of the positioning rod 9 and squeezes the positioning rod 9. The positioning rod 9 is squeezed by the hollow cement board 7 and moves upward;

[0042] Step 2: The positioning rod 9 moves upward to apply a squeezing force to the spring 1. The spring 1 is squeezed by the positioning rod 9 to produce deformation and accumulate force. After the positioning groove 8 is aligned with the positioning rod 9, the positioning rod 9 moves downward and resets under the elastic force of the spring 1.

[0043] Step 3: The positioning rod 9 moves downward and resets to contact the inner wall of the positioning groove 8 to ensure that the hollow cement board 7 is in the center position inside the clamping table 4. After the hollow cement board 7 is clamped, the hydraulic equipment is started to move downward to apply a stable bending force to the hollow cement board 7;

[0044] Step 4: The pressure sensor inside the hydraulic equipment can detect the bending force borne by the hollow cement slab 7 and transmit the detection data to the external detection equipment to complete the detection work.

[0045] When the cam 12 is in the center, the cam 12 is moved to the left and the cam 12 is moved to the right and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the right and the cam 12 is moved to the left and the cam 12 is moved to the right and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam 12 is moved to the left and the cam The gas inside the hollow plate 11 moves in the direction close to the synchronous plate 13 and squeezes the synchronous plate 13. The synchronous plate 13 is squeezed by the gas inside the hollow plate 11 and moves downward. The synchronous plate 13 moves downward to pull the spring four. The spring four is pulled by the synchronous plate 13 to deform and store force. At the same time, the synchronous plate 13 moves downward to contact the tooth plate 6 and limit the clamping table 4. The synchronous plate 13 forms a limit constraint on the clamping table 4, thereby enabling the clamping table 4 to maintain an appropriate tightness on the hollow cement plate 7. After the hollow cement plate 7 is clamped, the hydraulic equipment is started to move downward to apply a stable bending force to the hollow cement plate 7. At the same time, the pressure sensor inside the hydraulic equipment can detect the bending force borne by the hollow cement plate 7 and transmit the detection data to the external detection equipment to complete the detection work.

[0046] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, a reduction component for simulating the installation state of the hollow cement board 7 is provided on the top of the mechanical test bench 1, and a loading component is provided on the top of the test plate 2. The reduction component includes a placement groove 151, a placement rod 152, a placement spring 153 and a simulation frame 154. The placement groove 151 is opened on the top of the mechanical test bench 1, and the placement rod 152 is fixedly installed at the bottom of the inner wall of the placement groove 151. The simulation frame 154 is slidably installed on the circumferential surface of the placement rod 152. The placement spring 153 is arranged between the placement groove 151 and the simulation frame 154. The simulation frame 154 moves upward to apply a pulling force to the placement spring 153. The placement spring 153 is deformed and stored by the pull of the simulation frame 154. After the placement frame 156 is separated from the contact with the linkage rod 14, the placement spring 153 can drive the simulation frame 154 to reset.

[0047] The restoration component also includes a placement hole 155, a placement frame 156, a circular hole 157 and a connecting plate 158. The placement hole 155 is opened on the circumferential surface of the simulation frame 154, the placement frame 156 is fixedly installed on the inner wall of the placement hole 155, the circular hole 157 is opened on the top of the test plate 2, and the connecting plate 158 is fixedly installed at the bottom of the simulation frame 154. The simulation frame 154 can reproduce the actual load conditions such as vertical support force and interface friction force that it bears in highway engineering by dynamically contacting the hollow cement slab 7, thereby improving the authenticity of the detection data.

[0048] The simulation frame 154 contacts the inner wall of the circular hole 157, the bottom of the placement frame 156 is set to an arc surface, and the front side of the connecting plate 158 is set to an arc surface. The simulation frame 154 is driven to separate from the fitting state with the inner wall of the hollow cement board 7 by the placement spring 153, thereby solving the problem of jamming caused by the deformation of the hollow cement board 7, thereby facilitating the removal of the hollow cement board 7.

[0049] The loading assembly includes a supporting hole 161, a supporting bracket 162, a supporting spring 163, a rotating rod 164, a supporting cylinder 165 and a rubber plate 166. The supporting cylinder 165 moves away from the simulation frame 154 to break away from the contact with the hollow cement slab 7. The supporting hole 161 is opened at the top of the test plate 2. The supporting bracket 162 is slidably installed on the inner wall of the supporting hole 161. The supporting spring 163 is arranged between the supporting hole 161 and the supporting bracket 162. The rotating rod 164 rotates through the inner and outer walls of the supporting bracket 162. The supporting cylinder 165 is fixedly installed on the circumferential surface of the rotating rod 164. The rubber plate 166 is fixedly installed on the inner wall of the supporting hole 161. By breaking away from the contact with the hollow cement slab 7 by the supporting cylinder 165, the measured flexural strength can be prevented from being distorted. The supporting spring 163 can support the supporting bracket 162.

[0050] The rubber plate 166 is in conflict with the support bracket 162, and the right rear side of the support bracket 162 is set as an inclined surface. The supporting tube 165 is in conflict with the hollow cement slab 7 to prevent the hollow cement slab 7 from having too much friction with the supporting tube 165 when loading, thereby squeezing the supporting tube 165 to deviate from the initial position. By limiting the support bracket 162, it is possible to prevent excessive friction from driving the supporting tube 165 to move horizontally and cause a hard collision, thereby protecting the supporting tube 165.

[0051] When this embodiment is working: the fixture table 4 moves to the left, driving the fixture frame 3 to move to the left, the fixture frame 3 moves to the left, driving the linkage rod 14 to move to the left, the linkage rod 14 moves to the left and contacts the arc surface of the placement frame 156 and squeezes the placement frame 156, the placement frame 156 moves upward under the squeezing of the linkage rod 14, the placement frame 156 moves upward, driving the simulation frame 154 to move upward, the simulation frame 154 moves upward and contacts the hollow cement board 7 to simulate the real installation state of the hollow cement board 7, and after the detection work is completed, the linear motor drives the fixture table 4 to move to the right and reset, and the fixture table 4 The movement to the right side and reset drives the fixture frame 3 to move to the right side and reset. The movement to the right side and reset drives the linkage rod 14 to move to the right side and reset. The linkage rod 14 moves to the right side and resets to break away from the contact with the placement frame 156. After the placement frame 156 breaks away from the contact with the linkage rod 14, the simulation frame 154 moves downward and resets under the elastic force of the placement spring 153. The simulation frame 154 moves downward and resets and breaks away from the contact with the inner wall of the hollow cement slab 7. At the same time, the simulation frame 154 moves downward and resets, driving the placement frame 156 to move downward and reset. The placement frame 156 moves downward and resets and knocks on the placement rod 152 to generate vibration.

[0052] The simulation frame 154 moves upward, driving the connecting plate 158 to move upward. The connecting plate 158 moves upward, driving it to contact the inclined surface of the support frame 162 and squeeze the support frame 162. The support frame 162 is squeezed by the connecting plate 158 and moves in the direction away from the simulation frame 154. The support frame 162 moves in the direction away from the simulation frame 154 and squeezes the supporting spring 163. The supporting spring 163 is squeezed by the support frame 162 to deform and accumulate force. At the same time, the support frame 162 moves in the direction away from the simulation frame 154, driving the rotating rod 164 to move. The rotating rod 164 moves in the direction away from the simulation frame 154, driving the supporting cylinder 165 to move. The supporting cylinder 165 moves in the direction away from the simulation frame 154 and breaks away from the contact with the hollow cement slab 7. When the simulation frame 154 moves downward and resets, the simulation frame 154 moves downward and drives the connecting plate 158 to move downward. The connecting plate 158 moves downward and breaks away from the contact with the supporting frame 162. After the supporting frame 162 breaks away from the contact with the connecting plate 158, the supporting frame 162 moves backward and resets under the elastic force of the supporting spring 163. The supporting frame 162 moves backward and resets to support the bottom of the hollow cement board 7, thereby facilitating the loading of the hollow cement board 7. At the same time, the supporting frame 162 moves backward and contacts the rubber plate 166. The rubber plate 166 contacts the supporting frame 162 and limits the supporting frame 162, thereby preventing the hollow cement board 7 from having too much friction with the supporting cylinder 165 when loading, thereby squeezing the supporting cylinder 165 to deviate from the initial position.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A road construction cement performance testing device, comprising a mechanical test bench (1) and hydraulic equipment, characterized in that: The hydraulic device is arranged on the top of the mechanical test bench (1), a pressure sensor is arranged at the output end of the hydraulic device, a test plate (2) is fixedly installed on the top of the mechanical test bench (1), a fixture frame (3) is slidably installed on the top of the test plate (2), a fixture table (4) is fixedly installed on the inner wall of the fixture frame (3), a receiving groove (5) is opened on the top of the test plate (2), a tooth plate (6) is fixedly installed on the bottom of the inner wall of the receiving groove (5), and a hollow cement plate (7) is arranged inside the fixture table (4); A detection plate (10), the detection plate (10) being slidably mounted on the inner wall of the fixture table (4), the detection plate (10) being used to detect the fastening position of the hollow cement slab (7); A hollow plate (11), the hollow plate (11) is fixedly passed through the inner and outer walls of the fixture table (4), and the hydraulic device is used to apply a stable bending force to the hollow cement plate (7); A linkage plate (12), wherein the linkage plate (12) is slidably mounted on the inner wall of the hollow plate (11), and the fixture table (4) is used to fasten the hollow cement plate (7); A synchronization plate (13), wherein the synchronization plate (13) is slidably mounted on the inner wall of the hollow plate (11), and the tooth plate (6) is used to limit the synchronization plate (13); A reduction component for simulating the installation state of a hollow cement slab (7) is provided on the top of the mechanical test bench (1), and a loading component is provided on the top of the test plate (2).

2. A road construction cement performance detection device according to claim 1, characterized in that: A positioning groove (8) is provided on the top of the hollow cement slab (7), a positioning rod (9) is slidably passed through the top of the fixture table (4), the bottom of the positioning rod (9) is set as an inclined surface, and a linkage rod (14) is fixedly installed on the left side of the fixture frame (3).

3. A road construction cement performance detection device according to claim 2, characterized in that: The bottom of the positioning rod (9) contacts the hollow cement board (7), a second spring is provided between the detection plate (10) and the fixture table (4), a first spring is provided between the positioning rod (9) and the fixture table (4), and the bottom of the synchronization plate (13) is provided as an inclined surface.

4. A road construction cement performance detection device according to claim 3, characterized in that: A third spring is provided between the linkage plate (12) and the hollow plate (11), a fourth spring is provided between the synchronization plate (13) and the hollow plate (11), a first rubber ring is provided between the linkage plate (12) and the hollow plate (11), and a second rubber ring is provided between the synchronization plate (13) and the hollow plate (11).

5. A road construction cement performance detection device according to claim 4, characterized in that: The reduction assembly comprises a placement groove (151), a placement rod (152), a placement spring (153) and a simulation frame (154), wherein the placement groove (151) is opened on the top of the mechanical test bench (1), the placement rod (152) is fixedly installed at the bottom of the inner wall of the placement groove (151), the simulation frame (154) is slidably installed on the circumferential surface of the placement rod (152), and the placement spring (153) is arranged between the placement groove (151) and the simulation frame (154).

6. A road construction cement performance detection device according to claim 5, characterized in that: The reduction assembly further comprises a placement hole (155), a placement frame (156), a circular hole (157) and a connecting plate (158), wherein the placement hole (155) is provided on the circumferential surface of the simulation frame (154), the placement frame (156) is fixedly mounted on the inner wall of the placement hole (155), the circular hole (157) is provided on the top of the test plate (2), and the connecting plate (158) is fixedly mounted on the bottom of the simulation frame (154).

7. A road construction cement performance detection device according to claim 6, characterized in that: The simulation frame (154) contacts the inner wall of the circular hole (157), the bottom of the placement frame (156) is configured as an arc surface, and the front side of the connection plate (158) is configured as an arc surface.

8. A road construction cement performance detection device according to claim 7, characterized in that: The loading assembly includes a supporting hole (161), a supporting bracket (162), a supporting spring (163), a rotating rod (164), a supporting cylinder (165) and a rubber plate (166), wherein the supporting hole (161) is opened at the top of the test plate (2), the supporting bracket (162) is slidably mounted on the inner wall of the supporting hole (161), the supporting spring (163) is arranged between the supporting hole (161) and the supporting bracket (162), the rotating rod (164) rotates and passes through the inner and outer walls of the supporting bracket (162), the supporting cylinder (165) is fixedly mounted on the circumferential surface of the rotating rod (164), and the rubber plate (166) is fixedly mounted on the inner wall of the supporting hole (161).

9. A road construction cement performance detection device according to claim 8, characterized in that: The rubber plate (166) contacts the support frame (162), the right rear side of the support frame (162) is set as an inclined surface, and the support tube (165) contacts the hollow cement board (7).

10. A method for detecting cement performance of highway construction, using the cement performance detection device of highway construction according to claim 9, characterized in that: The following steps are involved: Step 1: manually push the hollow cement board (7) into the interior of the fixture table (4), the hollow cement board (7) enters the interior of the fixture table (4) and contacts the inclined surface at the bottom of the positioning rod (9) and squeezes the positioning rod (9), and the positioning rod (9) is squeezed by the hollow cement board (7) and moves upward; Step 2: The positioning rod (9) moves upward to apply a squeezing force to the spring 1, and the spring 1 is squeezed by the positioning rod (9) to produce deformation and accumulate force. After the positioning groove (8) is aligned with the positioning rod (9), the positioning rod (9) moves downward under the elastic force of the spring 1 to reset; Step 3: The positioning rod (9) moves downward to reset and contact the inner wall of the positioning groove (8) to ensure that the hollow cement board (7) is in the center position inside the clamping table (4). After the hollow cement board (7) is clamped, the hydraulic equipment is started to move downward to apply a stable bending force to the hollow cement board (7); Step 4: The pressure sensor inside the hydraulic equipment can detect the bending force borne by the hollow cement slab (7) and transmit the detection data to the external detection equipment to complete the detection work.

Images