Shotcrete adhesion testing device

Abstract

The present application relates to the field of shotcrete detection, and discloses a shotcrete adhesion detection device, comprising a fixing frame.In the present application, when in use, an appropriate amount of shotcrete is filled in the barrel, then the electric telescopic rod is started, the piston rod of the electric telescopic rod moves to make the detection plate move downward, after the detection plate moves into the shotcrete, the shotcrete covers the surface of the detection plate and the inner wall of the reinforcing port, when the detection plate is pulled out, the detection plate and the shotcrete in the reinforcing port are integrated, and the adhesion can be fully detected by cooperating with the tensioner body, after the adhesion data is detected, the shotcrete is adjusted in proportion, the shotcrete that meets the adhesion requirement is adjusted, time and labor are saved, after the detection is completed, the detection plate is first homed, then the cleaning liquid is placed on the barrel, the cleaning pad is rotated by rotating the motor, the barrel can be cleaned, the subsequent detection shotcrete can be ensured clean, therefore, the effect of ensuring the accuracy of adhesion detection data can be achieved.

Description

Technical Field

[0001] This invention belongs to the field of sprayed grout testing technology, specifically a sprayed grout adhesion testing device. Background Technology

[0002] The construction process, conditions, and skill levels of sprayed concrete differ significantly from the performance indicators of commercially available quick-setting agents. This results in a high rebound rate during sprayed concrete construction, increasing material waste, causing significant defects in project quality, endangering the lives of on-site workers, and failing to meet national requirements for energy conservation, emission reduction, and carbon emission reduction. Controlling the rebound rate during sprayed concrete is an urgent issue for the industry. Currently, the overall rebound rate of ordinary C20-C30 dry or wet sprayed concrete sidewalls and arches used in underground cavern support for hydropower, water conservancy, railway, and highway projects is generally high, and the strength of dry sprayed concrete often fails to meet standards. The rebound rate of dry sprayed concrete generally reaches over 20%, even reaching 40%-50%; the rebound rate of wet sprayed concrete also frequently exceeds 20%. This significantly increases construction costs and extends the construction period of shotcrete support. Among the various factors affecting the rebound rate of shotcrete, the shotcrete equipment, the quality of construction personnel, and the surrounding rock conditions are often difficult to change or cannot be changed at all. Currently, when shotcrete is applied to the walls of tunnels or mines, the shotcrete has varying degrees of adhesion to the wall, resulting in some shotcrete falling off due to its high resilience and low adhesion. Therefore, it is necessary to test the adhesion of the shotcrete, and thus, a shotcrete adhesion testing device is required.

[0003] Currently, Chinese patent CN210953764U discloses a UV-curable coating adhesion testing device, including a main body of the device. A support arm is located at the upper end of the main body, and a sleeve is located at the lower end of the support arm. A telescopic rod is installed between the sleeve and the support arm. A support base is located at the lower end of the main body, and a working platform is located between the support base and the support arm. A positioning groove is located in the middle of the working platform. A pressure gauge is installed at one end of the main body. A suction nozzle at the front end of the telescopic rod sucks up the painted surface as the telescopic rod moves downwards. The pressure gauge obtains a specific value by measuring the pull between the suction nozzle and the telescopic rod. Based on the pressure value on the gauge and whether paint peeling occurs at the separation surface between the suction nozzle and the paint, or based on the size of the peeling surface, the adhesion ability and specific adhesion of the paint can be evaluated.

[0004] However, when the above-mentioned device is used, the suction nozzle sucks up the material coating surface as the telescopic rod moves downward. The adhesion is detected by the pressure value on the pressure gauge and whether material falls off the separation surface between the suction nozzle and the material, or by the size of the area where material falls off. However, this detection method cannot be used to detect the adhesion of materials of different thicknesses. The contact surface is too narrow, and the data is not accurate enough when conducting adhesion tests. Summary of the Invention

[0005] The purpose of this invention is to provide a sprayed slurry adhesion testing device to solve the problem of insufficient data accuracy when the contact surface is too narrow.

[0006] The technical solution adopted in this invention is as follows: a sprayed material adhesion testing device includes a fixed frame, a cylinder is fixedly connected to the inner wall of the fixed frame, a connecting frame is fixedly connected to the top side of the fixed frame, an adjustment mechanism is provided on the bottom side of the connecting frame, a testing mechanism is provided at the bottom of the adjustment mechanism, a testing plate is fixedly connected to the bottom of the testing mechanism, a reinforcing port with an annular structure is opened around the testing plate, and a cleaning mechanism is provided at the bottom of the cylinder.

[0007] By adopting the above technical solution, during use, an appropriate amount of sprayed grout is filled into the cylinder, and then the electric telescopic rod is activated. The piston rod of the electric telescopic rod moves, causing the detection plate to move downwards. After the detection plate moves into the sprayed grout, the sprayed grout will cover the surface of the detection plate and the inner wall of the reinforcement port. When the detection plate is pulled out, the detection plate and the sprayed grout in the reinforcement port are mixed together. With the puller body, the adhesion can be fully tested. After the adhesion data is detected, the sprayed grout ratio is adjusted to meet the adhesion requirements, saving time and effort. After the test is completed, the detection plate is first returned to its position, and then cleaning fluid is placed in the cylinder. The cleaning pad is rotated by rotating the motor to clean the cylinder, ensuring the cleanliness of the sprayed grout for subsequent tests. Therefore, the effect of ensuring accurate adhesion test data can be achieved.

[0008] In a preferred embodiment, the top inner wall and the bottom inner wall of the reinforcement opening are provided with a plurality of evenly distributed reinforcement grooves, the centers of the reinforcement grooves being coincident.

[0009] By adopting the above technical solution, the reinforcement groove can increase the contact area between the reinforcement port and the sprayed grout, which can further ensure the accuracy of the test results.

[0010] In a preferred embodiment, the adjustment mechanism includes an electric telescopic rod fixedly connected to one side of the bottom of the connecting frame, the sleeve end of the electric telescopic rod being fixedly connected to one side of the bottom of the connecting frame, a connecting plate being fixedly connected to the other side of the fixed frame, a controller being fixedly connected to the top of the connecting plate, and the controller being connected to the electric telescopic rod via an electric wire.

[0011] By adopting the above technical solution and setting the controller, the raising or lowering of the electric telescopic rod can be controlled, ensuring that the piston rod of the electric telescopic rod drives the detection plate to make full contact with the sprayed grout.

[0012] In a preferred embodiment, the detection mechanism includes a tensioner body fixedly connected to the bottom of one end of the piston rod of the electric telescopic rod, a display screen fixedly connected to the top of the connecting plate, the display screen being connected to the tensioner body via a wire, and the tensioner body being fixedly connected to the detection plate.

[0013] By adopting the above technical solution, the display screen can be set up to display the data after the adhesion of the sprayed grout is detected by the tensioner body, and then the sprayed grout ratio can be adjusted to meet the adhesion requirements, thus avoiding waste of grout.

[0014] In a preferred embodiment, the cleaning mechanism includes a mounting frame disposed inside the cylinder, a scraper fixedly connected to the top corner of the mounting frame, a rotating mechanism disposed at the bottom of the mounting frame, and a discharge port opened on one side of the outer wall of the cylinder.

[0015] By adopting the above technical solution, the scraper can be used in conjunction with the rotating mechanism to clean the inner wall of the cylinder after the inspection is completed.

[0016] In a preferred embodiment, the mounting bracket has a cross-shaped structure.

[0017] By adopting the above technical solution, the cross-shaped structure design allows the scraper to be located on the inner wall of the cylinder, thus avoiding motion interference between the scraper and the detection plate.

[0018] In a preferred embodiment, a cleaning pad is fixedly connected to one side of the scraper, and the cleaning pad is made of rubber.

[0019] By adopting the above technical solution, the setting of the cleaning pad can increase the friction between the scraper and the inner wall of the cylinder, which can make the inner wall of the cylinder thoroughly cleaned and avoid errors in the subsequent testing of other sprayed materials.

[0020] In a preferred embodiment, the rotating mechanism includes a rotating motor fixedly connected to the bottom outer wall of the cylinder, the output shaft of the rotating motor being fixedly connected to a rotating shaft, and the rotating shaft being fixedly connected to the mounting bracket.

[0021] By adopting the above technical solution, the rotating motor can drive the rotating shaft to rotate under the rotation of the output shaft, and the rotation of the rotating shaft can cause the mounting bracket to rotate.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] In this invention, during use, an appropriate amount of sprayed grout is filled into the cylinder, and then the electric telescopic rod is activated. The piston rod of the electric telescopic rod moves, causing the detection plate to move downwards. After the detection plate moves into the sprayed grout, the sprayed grout will cover the surface of the detection plate and the inner wall of the reinforcement port. When the detection plate is pulled out, the detection plate and the sprayed grout in the reinforcement port become one, which, together with the tensioner body, can fully detect the adhesion. After detecting the adhesion data, the sprayed grout ratio is adjusted to meet the adhesion requirements, saving time and effort. After the test is completed, the detection plate is first returned to its original position, and then cleaning fluid is placed in the cylinder. By rotating the motor, the cleaning pad can be rotated to clean the cylinder, ensuring the cleanliness of the sprayed grout for subsequent tests. Therefore, the effect of ensuring accurate adhesion test data can be achieved. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a partial cross-sectional view of the present invention;

[0026] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0027] Figure 4 for Figure 2 A magnified structural diagram at point B in the middle.

[0028] The markings in the diagram are: 1. Fixing frame; 2. Cylinder body; 3. Detection plate; 4. Reinforcement port; 5. Reinforcement groove; 6. Electric telescopic rod; 7. Connecting plate; 8. Controller; 9. Tensioner body; 10. Display screen; 11. Mounting bracket; 12. Scraper; 13. Cleaning pad; 14. Rotating motor; 15. Rotating shaft. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Reference Figure 1-3The sprayed mortar adhesion testing device includes a fixed frame 1, a cylinder 2 fixedly connected to the inner wall of the fixed frame 1, a connecting frame fixedly connected to the top side of the fixed frame 1, an adjustment mechanism provided on the bottom side of the connecting frame, a testing mechanism provided at the bottom of the adjustment mechanism, a testing plate 3 fixedly connected to the bottom of the testing mechanism, a reinforcing port 4 with an annular structure opened around the testing plate 3, and a cleaning mechanism provided at the bottom of the cylinder 2.

[0031] The top and bottom inner walls of the reinforcement port 4 are provided with several evenly distributed reinforcement grooves 5. The centers of the reinforcement grooves 5 coincide. The reinforcement grooves 5 can increase the contact area between the reinforcement port 4 and the sprayed grout, which can further ensure the accuracy of the test results.

[0032] The adjustment mechanism includes an electric telescopic rod 6 fixedly connected to one side of the bottom of the connecting frame. The sleeve end of the electric telescopic rod 6 is fixedly connected to one side of the bottom of the connecting frame. A connecting plate 7 is fixedly connected to the other side of the fixed frame 1. A controller 8 is fixedly connected to the top of the connecting plate 7. The controller 8 is connected to the electric telescopic rod 6 by a wire. The controller 8 can control the rise or fall of the electric telescopic rod 6, which can ensure that the piston rod of the electric telescopic rod 6 drives the detection plate 3 to make full contact with the sprayed grout.

[0033] The testing mechanism includes a tensioner body 9 fixedly connected to the bottom of one end of the piston rod of the electric telescopic rod 6. A display screen 10 is fixedly connected to the top of the connecting plate 7. The display screen 10 is connected to the tensioner body 9 by wires. The tensioner body 9 is fixedly connected to the testing plate 3. After the tensioner body 9 tests the adhesion of the sprayed grout, the display screen 10 can display the data, and then adjust the sprayed grout ratio to meet the adhesion requirements, thus avoiding waste of grout.

[0034] The cleaning mechanism includes a mounting frame 11 installed inside the cylinder 2. A scraper 12 is fixedly connected to the top corner of the mounting frame 11. A rotating mechanism is provided at the bottom of the mounting frame 11. An outlet is provided on one side of the outer wall of the cylinder 2. After the inspection is completed, the scraper 12, in conjunction with the rotating mechanism, can clean the inner wall of the cylinder 2.

[0035] The mounting bracket 11 has a cross-shaped structure, which allows the scraper 12 to be located on the inner wall of the cylinder 2, thus avoiding motion interference between the scraper 12 and the detection plate 3.

[0036] A cleaning pad 13 is fixedly connected to one side of the scraper 12. The cleaning pad 13 is made of rubber. The cleaning pad 13 can increase the friction between the scraper 12 and the inner wall of the cylinder 2, so that the inner wall of the cylinder 2 can be thoroughly cleaned, which can avoid errors in the subsequent testing of other sprayed materials.

[0037] The rotating mechanism includes a rotating motor 14 fixedly connected to the bottom outer wall of the cylinder 2. The output shaft of the rotating motor 14 is fixedly connected to a rotating shaft 15, and the rotating shaft 15 is fixedly connected to the mounting frame 11. The rotating motor 14 can drive the rotating shaft 15 to rotate under the rotation of the output shaft, and the rotation of the rotating shaft 15 can cause the mounting frame 11 to rotate.

[0038] The implementation principle of the sprayed slurry adhesion testing device of the present invention is as follows:

[0039] In use, an appropriate amount of spray grout is filled into the cylinder 2, and then the electric telescopic rod 6 is activated. The piston rod of the electric telescopic rod 6 moves, causing the detection plate 3 to move down. After the detection plate 3 moves into the spray grout, the spray grout will cover the surface of the detection plate 3 and the inner wall of the reinforcement port 4. When the detection plate 3 is pulled out, the detection plate 3 and the spray grout in the reinforcement port 4 are mixed together. With the help of the puller body 9, the adhesion can be fully tested. After the adhesion data is detected, the spray grout ratio is adjusted to meet the adhesion requirements, which saves time and effort. After the test is completed, the detection plate 3 is returned to its original position, and then cleaning fluid is placed in the cylinder 2. The cleaning pad 13 is rotated by rotating the motor 14 to clean the cylinder 2, which can ensure that the subsequent spray grout is clean. Therefore, the effect of ensuring accurate adhesion test data can be achieved.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sprayed grout adhesion testing device, comprising a fixing frame (1), characterized in that: The inner wall of the fixed frame (1) is fixedly connected to the cylinder (2), the top side of the fixed frame (1) is fixedly connected to the connecting frame, the bottom side of the connecting frame is provided with an adjustment mechanism, the bottom of the adjustment mechanism is provided with a detection mechanism, the bottom of the detection mechanism is fixedly connected to a detection plate (3), the detection plate (3) is surrounded by a ring-shaped reinforcement port (4), and the bottom of the cylinder (2) is provided with a cleaning mechanism. The adjustment mechanism includes an electric telescopic rod (6) fixedly connected to one side of the bottom of the connecting frame. The sleeve end of the electric telescopic rod (6) is fixedly connected to one side of the bottom of the connecting frame. A connecting plate (7) is fixedly connected to the other side of the fixed frame (1). A controller (8) is fixedly connected to the top of the connecting plate (7). The controller (8) is connected to the electric telescopic rod (6) by a wire. The detection mechanism includes a tensioner body (9) fixedly connected to the bottom of one end of the piston rod of the electric telescopic rod (6), a display screen (10) fixedly connected to the top of the connecting plate (7), the display screen (10) and the tensioner body (9) being connected by wires, and the tensioner body (9) being fixedly connected to the detection plate (3).

2. The sprayed slurry adhesion testing device as described in claim 1, characterized in that: The top inner wall and bottom inner wall of the reinforcement opening (4) are provided with several uniformly distributed reinforcement grooves (5), and the centers of the reinforcement grooves (5) coincide.

3. The sprayed slurry adhesion testing device as described in claim 1, characterized in that: The cleaning mechanism includes a mounting bracket (11) installed inside the cylinder (2), a scraper (12) is fixedly connected to the top corner of the mounting bracket (11), a rotating mechanism is provided at the bottom of the mounting bracket (11), and an outlet is provided on one side of the outer wall of the cylinder (2).

4. The sprayed slurry adhesion testing device as described in claim 3, characterized in that: The mounting bracket (11) has a cross-shaped structure.

5. The sprayed slurry adhesion testing device as described in claim 3, characterized in that: A cleaning pad (13) is fixedly connected to one side of the scraper (12), and the cleaning pad (13) is made of rubber.

6. The sprayed slurry adhesion testing device as described in claim 3, characterized in that: The rotating mechanism includes a rotating motor (14) fixedly connected to the bottom outer wall of the cylinder (2), the output shaft of the rotating motor (14) is fixedly connected to a rotating shaft (15), and the rotating shaft (15) is fixedly connected to the mounting bracket (11).

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