Steel slag micro-surfacing friction coefficient testing device

Abstract

This utility model discloses a friction coefficient testing device for steel slag micro-surfacing, comprising: a pendulum friction coefficient measuring instrument, a counterweight unit including a water tank disposed above the pendulum friction coefficient measuring instrument, a water inlet pipe fixedly connected to the top of the water tank, the top of the water inlet pipe being sealed by a detachable sealing cap, a rectangular groove fitting the water tank on the top of the pendulum friction coefficient measuring instrument, the water tank being slidably disposed within the rectangular groove, and a rocker arm locking unit disposed on the pendulum friction coefficient measuring instrument. This utility model, by injecting clean water into the water tank, can lower the center of gravity height of the pendulum friction coefficient measuring instrument and improve its supporting stability, thereby suppressing the interference of strong external winds on the friction coefficient testing of steel slag pavement. The rocker arm locking unit can lock the rocker arm in a vertical state, ensuring the structural safety of the instrument during transportation and storage.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, and in particular to a device for testing the friction coefficient of steel slag micro-surfacing. Background Technology

[0002] Steel slag is a byproduct of the steelmaking process. It consists of various oxides formed by the oxidation of impurities such as silicon, manganese, phosphorus, and sulfur in pig iron during the smelting process, as well as salts formed by the reaction of these oxides with solvents. Therefore, steel slag can be used as a raw material for iron and steel metallurgy. The mineral composition of steel slag is mainly tricalcium silicate, followed by dicalcium silicate, RO phase, dicalcium ferrite, and free calcium oxide.

[0003] Currently, the pendulum friction coefficient tester is a commonly used device for testing the friction coefficient of steel slag micro-surfaced pavement. It calculates the friction coefficient based on the energy loss during the sliding process of the rubber slider at the end of the pendulum arm. In actual test pavement, steel slag micro-surfaced pavement may be in an open environment and is susceptible to strong winds. Due to the lack of an effective counterweight structure in the existing pendulum tester, the instrument itself may sway under the action of wind, causing the pendulum arm swing trajectory to deviate, which ultimately leads to certain errors in the test data and makes it difficult to truly reflect the anti-skid performance of steel slag pavement. Therefore, a friction coefficient testing device for steel slag micro-surfaced pavement is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the current steel slag micro-surfacing friction coefficient testing device, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a friction coefficient testing device for steel slag micro-surfacing, which is suitable for solving the problem that the existing pendulum instrument lacks an effective counterweight structure. Under the action of wind, the instrument itself may shake, causing the swing trajectory of the pendulum arm to deviate, making it difficult to truly reflect the anti-skid performance of steel slag pavement.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a friction coefficient testing device for steel slag micro-surfacing, comprising:

[0008] Pendulum friction coefficient measuring instrument;

[0009] The counterweight unit includes a water tank disposed above the pendulum friction coefficient measuring instrument. The top of the water tank is fixedly connected to a water inlet pipe, and the top of the water inlet pipe is sealed by a removable sealing cap. The top of the pendulum friction coefficient measuring instrument is provided with a rectangular groove that fits the water tank, and the water tank is slidably disposed in the rectangular groove.

[0010] A rocker arm locking unit is installed on the pendulum friction coefficient measuring instrument, the rocker arm locking unit being used to fix the rocker arm of the pendulum friction coefficient measuring instrument.

[0011] As a preferred embodiment of the friction coefficient testing device for steel slag micro-surfacing described in this utility model, the top opening of the rectangular groove is an inverted pyramid-shaped inclined surface structure, and the inclined surface of the rectangular groove is used for the water tank to slide into the rectangular groove.

[0012] As a preferred embodiment of the steel slag micro-surfacing friction coefficient testing device of this utility model, a vibration sensor is fixedly installed on one side of the pendulum friction coefficient measuring instrument, and the vibration sensor is used to monitor the vibration of the pendulum friction coefficient measuring instrument and the water tank.

[0013] In a preferred embodiment of the friction coefficient testing device for steel slag micro-surfacing described in this utility model, the water tank is made of transparent material, and water level lines are provided on both sides of the water tank, with a gap between the height of the water level lines and the top of the water tank.

[0014] In a preferred embodiment of the friction coefficient testing device for steel slag micro-surfacing described in this utility model, a handle is fixedly connected to the top and one side of the water tank, and the handle is reinforced to the water tank.

[0015] As a preferred embodiment of the friction coefficient testing device for steel slag micro-surfacing described in this utility model, an indicator light is fixedly installed on the top of the pendulum friction coefficient measuring instrument, and the indicator light has a built-in speaker.

[0016] As a preferred embodiment of the friction coefficient testing device for steel slag micro-surfacing according to the present invention, the rocker arm locking unit includes a connecting plate fixedly connected to the rocker arm of the pendulum friction coefficient measuring instrument, a threaded bolt slidably passing through one side of the connecting plate, an L-shaped plate fixedly connected to the side of the pendulum friction coefficient measuring instrument near the rocker arm, and one end of the threaded bolt passing through the L-shaped plate and threadedly connected to the L-shaped plate.

[0017] As a preferred embodiment of the friction coefficient testing device for steel slag micro-surfacing described in this utility model, wherein: a threaded hole for fitting a threaded bolt is provided on one side of the pendulum friction coefficient measuring instrument, and the threaded hole is far away from the deflection trajectory of the rocker arm.

[0018] The beneficial effects of this utility model are as follows: by injecting clean water into the water tank, the center of gravity height of the pendulum friction coefficient measuring instrument can be reduced and its support stability can be improved, thereby suppressing the interference of strong external wind on the friction coefficient test of steel slag pavement. At the same time, the rocker arm locking unit can be used to quickly lock the rocker arm in a vertical state, avoiding the rocker arm from swinging due to inertia during the movement, and ensuring the structural safety of the instrument during transportation and storage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of the friction coefficient testing device for steel slag micro-surfacing proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of the water inlet pipe and sealing cap proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the rocker arm locking unit structure proposed in this utility model. Attached image description:

[0024] 100. Pendulum friction coefficient measuring instrument;

[0025] 200. Counterweight unit; 201. Water tank; 202. Inlet pipe; 203. Sealing cover; 204. Rectangular groove; 205. Vibration sensor; 206. Water level line; 207. Handle; 208. Indicator light;

[0026] 300, rocker arm locking unit; 301, connecting plate; 302, threaded bolt; 303, L-shaped plate; 304, threaded hole. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0030] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0031] Example 1

[0032] Reference Figures 1-3 This is the first embodiment of the present invention, which provides a steel slag micro-surfacing friction coefficient testing device, which can reduce the center of gravity height of the pendulum friction coefficient measuring instrument and improve its support stability, thereby suppressing the interference of strong external wind on the steel slag road surface friction coefficient testing. It includes: pendulum friction coefficient measuring instrument 100, counterweight unit 200 and rocker arm locking unit 300.

[0033] The counterweight unit 200 includes a water tank 201 disposed above the pendulum friction coefficient measuring instrument 100. The top of the water tank 201 is fixedly connected to a water inlet pipe 202. The top of the water inlet pipe 202 is sealed by a detachable sealing cap 203. The top of the pendulum friction coefficient measuring instrument 100 is provided with a rectangular groove 204 that fits the water tank 201. The water tank 201 is slidably disposed in the rectangular groove 204.

[0034] A rocker arm locking unit 300 is installed on the pendulum friction coefficient measuring instrument 100. The rocker arm locking unit 300 is used to fix the rocker arm of the pendulum friction coefficient measuring instrument 100.

[0035] The pendulum friction coefficient tester 100 is equipped with a control panel at the front end for centralized control of the entire device. When testing the friction coefficient of steel slag pavement, the pendulum friction coefficient tester 100 is first placed horizontally on the pavement. By rotating the threaded sealing cover 203, the water inlet pipe 202 is opened to fill the water tank 201 with water. After filling, the water tank 201 is slid into the rectangular groove 204 and embedded in the top of the pendulum friction coefficient tester 100. The addition of counterweight by the water tank 201 can lower the center of gravity of the pendulum friction coefficient tester 100 and enhance the stability during testing. It can effectively resist strong wind interference and ensure the accuracy of the measurement data. Moreover, the water tank 201 is designed to be separated from the pendulum friction coefficient tester 100 for transportation.

[0036] After the device is secured, the operator uses the control panel to release the rocker arm, allowing the pendulum to swing freely across the road surface. During this process, the control panel captures and records key data such as the swing amplitude of the pendulum in real time. The road surface friction coefficient is calculated through the built-in algorithm. The pendulum friction coefficient measuring instrument 100 is a general standard part or a component known to those skilled in the art. Its structure and principle can be learned by technicians through technical manuals or conventional experimental methods. After the test, the rocker arm hangs down naturally under the action of gravity. At this time, the rocker arm locking unit 300 quickly takes effect, locking the rocker arm firmly in a vertical position to prevent the rocker arm from shifting due to shaking or collision during the handling or storage of the device. This provides reliable safety protection for the instrument and reduces the risk of accidental damage.

[0037] Example 2

[0038] Reference Figures 1-3 This is the second embodiment of the present invention. Unlike the previous embodiment, the top opening of the rectangular groove 204 is an inverted pyramid-shaped inclined structure. The inclined surface of the rectangular groove 204 is used for the water tank 201 to slide into the rectangular groove 204.

[0039] When installing the water tank 201 onto the pendulum friction coefficient measuring instrument 100, the water tank 201 can slide more smoothly into the rectangular groove 204 along the inclined surface. The inclined surface reduces the difficulty of aligning the water tank 201 with the rectangular groove 204, ensuring that the water tank 201 fits tightly against the rectangular groove 204 while reducing installation time.

[0040] In addition, a vibration sensor 205 is fixedly installed on one side of the pendulum friction coefficient measuring instrument 100. The vibration sensor 205 is used to monitor the vibration of the pendulum friction coefficient measuring instrument 100 and the water tank 201.

[0041] Vibration sensor 205 is used to sense the vibration of pendulum friction coefficient measuring instrument 100 and water tank 201 in real time. Vibration sensor 205 can convert mechanical vibration signals into electrical signals or other identifiable signals. These signals are transmitted to the control panel of the pendulum friction coefficient measuring instrument 100. The control system analyzes and processes the signals. The operator can determine whether the device is affected by external vibration interference during the test and the degree of interference. In this way, the accuracy of the measurement data can be evaluated or corresponding measures can be taken to reduce the impact of vibration and ensure the reliability of the friction coefficient test results of steel slag pavement.

[0042] Example 3

[0043] Reference Figures 1-3This is the third embodiment of the present utility model. Unlike the previous embodiment, the water tank 201 is made of transparent material, which makes it easy for operators to observe the water level in the water tank 201. Water level lines 206 are provided on both sides of the water tank 201, and there is a gap between the height of the water level lines 206 and the top of the water tank 201.

[0044] A specific distance is reserved between the water level line 206 and the top of the inner cavity of the water tank 201. This not only prevents overflow due to overfilling but also controls the water volume. At the same time, this reserved space allows the water in the water tank 201 to have the freedom to slosh. When the device encounters external vibration, the water in the water tank 201 will slosh due to inertia. The secondary vibration signal generated by this sloshing will significantly enhance the overall vibration response of the device. The vibration sensor 205 can sensitively capture the additional vibration information caused by the water sloshing, thereby effectively improving the sensitivity and accuracy of vibration monitoring. This allows the operator to stop the test when the vibration is strong and then move to other areas for operation.

[0045] The water tank 201 has a handle 207 fixedly connected to its top and one side, and the handle 207 is reinforced to the water tank 201.

[0046] The handles 207 on the top and sides of the water tank 201 are reinforced to provide reliable grip points, making it easy for operators to move the water tank 201 or drain the water in the water tank 201 through the inlet pipe 202.

[0047] In addition, an indicator light 208 is fixedly installed on the top of the pendulum friction coefficient measuring instrument 100, and the indicator light 208 has a built-in speaker.

[0048] The indicator light 208 is controlled by the control panel. During the test, if the vibration sensor 205 detects that the vibration amplitude exceeds the preset threshold, the control panel controls the indicator light 208 to flash, and its internal speaker emits an alarm through a buzzer sound to remind the operator to check the stability of the device or pause the measurement in time. In addition, the indicator light 208 can also be used to display the working status of the device (such as whether the power supply is normal, whether the measurement is completed, etc.) to help the operator complete the test process efficiently and improve the convenience and safety of human-computer interaction.

[0049] Example 4

[0050] Reference Figure 1 and Figure 3 This is the fourth embodiment of the present invention. Unlike the previous embodiment, the rocker arm locking unit 300 includes a connecting plate 301 fixedly connected to the rocker arm of the pendulum friction coefficient measuring instrument 100. A threaded bolt 302 is slidably passed through one side of the connecting plate 301. An L-shaped plate 303 is fixedly connected to the side of the pendulum friction coefficient measuring instrument 100 near the rocker arm. One end of the threaded bolt 302 passes through the L-shaped plate 303 and is threadedly connected to the L-shaped plate 303.

[0051] When it is necessary to fix the rocker arm, the operator rotates the threaded bolt 302 so that one end passes through the connecting plate 301 and the L-shaped plate 303 in sequence. After the L-shaped plate 303 is threadedly connected to the threaded bolt 302, it is gradually tightened, thereby stabilizing and locking the rocker arm in a vertical position to prevent the rocker arm from swinging or colliding during the handling and storage of the device. The rocker arm can then swing normally after the threaded bolt 302 is rotated in the opposite direction and removed through the connecting plate 301.

[0052] The pendulum friction coefficient measuring instrument 100 has a threaded hole 304 on one side that matches the threaded bolt 302. The threaded hole 304 is far away from the deflection trajectory of the rocker arm to prevent conflict with the rocker arm.

[0053] The threaded bolt 302 removed from the connecting plate 301 can be aligned with the threaded hole 304, and the threaded bolt 302 can be rotated to insert it into the threaded hole 304 to store the threaded bolt 302 and prevent it from being lost. After the test is completed, the threaded bolt 302 is rotated out of the threaded hole 304 and fixed to the rocker arm.

[0054] During use, the pendulum friction coefficient measuring instrument 100 is placed horizontally on the steel slag road surface. Then, the sealing cap 203 on the top of the water inlet pipe 202 is unscrewed, and water is injected into the water tank 201 through the water inlet pipe 202. Water injection is stopped when the water level reaches the water level line 206, and the sealing cap 203 is used to seal it. Then, the water tank 201 is slid into the rectangular groove 204 through the handle 207. Then, the threaded bolt 302 is rotated off the connecting plate 301 and inserted into the threaded hole 304. Next, the operator starts the device through the control panel and releases the rocker arm, allowing the pendulum under the rocker arm to slide freely across the road surface. During this process, the control panel captures key data such as the swing amplitude of the pendulum in real time and calculates the road surface friction coefficient through the built-in algorithm.

[0055] During the test, the vibration sensor 205 senses the vibration of the pendulum friction coefficient measuring instrument 100 and the water tank 201 in real time, and converts the vibration signal into an electrical signal or other identifiable signal, which is then transmitted to the control panel. When the vibration amplitude exceeds the preset threshold, the indicator light 208 on the top of the control panel flashes, and the built-in speaker emits a buzzer alarm to remind the operator to check the stability of the device or pause the measurement to ensure data accuracy. After the test is completed, the rocker arm hangs vertically under the action of gravity. Then, the threaded bolt 302 is rotated out of the threaded hole 304. Next, the threaded bolt 302 is rotated so that one end passes through the connecting plate 301 and the L-shaped plate 303 and is tightened to lock the rocker arm stably, thereby facilitating the movement of the pendulum friction coefficient measuring instrument 100.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for testing the friction coefficient of steel slag micro-surfacing, characterized in that, include: Pendulum friction coefficient measuring instrument (100); The counterweight unit (200) includes a water tank (201) disposed above the pendulum friction coefficient measuring instrument (100). The top of the water tank (201) is fixedly connected to a water inlet pipe (202). The top of the water inlet pipe (202) is sealed by a removable sealing cap (203). The top of the pendulum friction coefficient measuring instrument (100) is provided with a rectangular groove (204) that fits the water tank (201). The water tank (201) is slidably disposed in the rectangular groove (204). A rocker arm locking unit (300) is provided on the pendulum friction coefficient measuring instrument (100), the rocker arm locking unit (300) is used to fix the rocker arm of the pendulum friction coefficient measuring instrument (100).

2. The friction coefficient testing device for steel slag micro-surfacing according to claim 1, characterized in that: The top opening of the rectangular groove (204) is an inverted pyramid-shaped inclined structure, and the inclined surface of the rectangular groove (204) is used for the water tank (201) to slide into the rectangular groove (204).

3. The friction coefficient testing device for steel slag micro-surfacing according to claim 2, characterized in that: A vibration sensor (205) is fixedly installed on one side of the pendulum friction coefficient measuring instrument (100), and the vibration sensor (205) is used to monitor the vibration of the pendulum friction coefficient measuring instrument (100) and the water tank (201).

4. The friction coefficient testing device for steel slag micro-surfacing according to claim 3, characterized in that: The water tank (201) is made of transparent material. Water level lines (206) are provided on both sides of the water tank (201). The height of the water level lines (206) is separated from the top of the water tank (201).

5. The friction coefficient testing device for steel slag micro-surfacing according to claim 4, characterized in that: The top and one side of the water tank (201) are fixedly connected to handles (207), and the handles (207) are reinforced to the water tank (201).

6. The friction coefficient testing device for steel slag micro-surfacing according to claim 3, characterized in that: An indicator light (208) is fixedly installed on the top of the pendulum friction coefficient measuring instrument (100), and the indicator light (208) has a built-in speaker.

7. The friction coefficient testing device for steel slag micro-surfacing according to claim 6, characterized in that: The rocker arm locking unit (300) includes a connecting plate (301) fixedly connected to the rocker arm of the pendulum friction coefficient measuring instrument (100). A threaded bolt (302) is slidably passed through one side of the connecting plate (301). An L-shaped plate (303) is fixedly connected to the side of the pendulum friction coefficient measuring instrument (100) near the rocker arm. One end of the threaded bolt (302) passes through the L-shaped plate (303) and is threadedly connected to the L-shaped plate (303).

8. The friction coefficient testing device for steel slag micro-surfacing according to claim 7, characterized in that: The pendulum friction coefficient measuring instrument (100) has a threaded hole (304) on one side for engaging a threaded bolt (302), and the threaded hole (304) is away from the deflection trajectory of the rocker arm.

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