A detachable pendulum friction meter

Abstract

This utility model provides a detachable pendulum friction meter, including a base and a mounting block. The outer wall of the base extends outward to form three legs, each of which is equipped with a spirit level and an adjustment component for leveling the base. A column is provided on the top of the base, and the mounting block is slidably fitted onto the column via a groove. The mounting block is provided with a positioning component to limit the sliding of the mounting block. A pendulum rod is oscillatingly provided on the top of the mounting block, and a pendulum hammer is provided on the free end of the pendulum rod. A scale is detachably provided on one side of the mounting block, and a cantilever is hingedly provided on the other side of the mounting block. A support component is provided on the side wall of the mounting block to horizontally support the cantilever, and a fixing component is provided on the free end of the cantilever rod to fix the pendulum rod. This invention solves the problems of existing friction meters, such as large space occupation and sharp parts that can easily cause injury to passing personnel when stored.

Description

Technical Field

[0001] This utility model relates to the technical field of pendulum friction meters, and in particular to a detachable pendulum friction meter. Background Technology

[0002] The pendulum friction meter is a specialized instrument used to measure the anti-skid properties of surfaces such as road surfaces and airport runways. Its core principle is based on the law of conservation of energy: when a pendulum falls from a fixed height, the potential energy loss is converted into work done to overcome road friction. The coefficient of friction is calculated by measuring the pendulum's potential energy loss. In use, the instrument must first be leveled and the sliding length calibrated. Then, the pendulum is released multiple times on a wet road surface, the pendulum values ​​are recorded, and the average value is taken. Finally, through temperature correction and other processing, a precise coefficient of friction is obtained, providing a scientific basis for road safety design and maintenance.

[0003] Current pendulum friction meters typically have a column on top of the base, with a scale and a cantilever on each side of the column. The cantilever has a fixing device to hold the pendulum swinging on the column. Most of the components of the friction meter are integrated. When storing the friction meter, the column, cantilever, and other structures take up a lot of space. Moreover, in places like warehouses, the sharp points on the scale of the friction meter can easily cause injury to people. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a detachable pendulum friction meter, which solves the problems of large space occupation and sharp parts that can easily cause injury to passersby when storing the friction meter.

[0005] According to an embodiment of this utility model, a detachable pendulum friction meter includes a base and a mounting block. The outer wall of the base extends outward to form three legs. Each leg is provided with a spirit level and an adjustment component for leveling the base. A column is provided on the top of the base. The mounting block is slidably fitted onto the column via a groove. The mounting block is provided with a positioning component to limit the sliding of the mounting block. A pendulum rod is oscillatingly provided on the top of the mounting block. A pendulum hammer is provided on the free end of the pendulum rod. A scale is detachably provided on one side of the mounting block. A cantilever is hingedly provided on the other side of the mounting block. A support component is provided on the side wall of the mounting block to horizontally support the cantilever. A fixing component for fixing the pendulum rod is provided on the free end of the cantilever.

[0006] Compared with the prior art, this utility model has the following advantages: by adopting a sliding connection between the column and the mounting block of the pendulum friction meter, the overall height of the device can be reduced when not in use, saving space. After the scale is removed and laid flat, the sharp parts on the scale are prevented from causing injury to passing workers. After the cantilever is released by the support components, it also rests against the outer wall of the mounting block under the action of gravity. By disassembling and folding each component, space is effectively saved, and the sharp structure on the friction meter is also prevented from causing injury to passing workers.

[0007] Furthermore, the support assembly includes: a support plate hinged to the side wall of the column facing the cantilever, a slot being provided at the bottom of the cantilever, and a limiting strip being provided at the top of the support plate for insertion into the slot.

[0008] Furthermore, the mounting block has a T-slot on the side facing the scale, and the scale has a T-block on the side facing the mounting block. The scale is installed by the T-block and the T-slot.

[0009] Furthermore, the positioning component includes a positioning pin, the mounting block has a threaded hole that connects to the slide, the positioning pin is threadedly connected to the threaded hole, and the column has an insertion hole for the end of the positioning pin to be inserted.

[0010] Furthermore, the fastener is detachably connected to the cantilever, and the mounting block has a receiving groove on the side wall facing the cantilever for the support plate to be accommodated.

[0011] Furthermore, the adjustment assembly includes: an adjustment screw, with an adjustment screw vertically inserted into each leg of the base, each adjustment screw being threadedly connected to the corresponding leg, each adjustment screw having a base at one end protruding from the leg, and each adjustment screw having a handle at the end opposite to the base.

[0012] Furthermore, each adjusting screw is also threaded with an adjusting nut, which is located on one side of the top of the support leg.

[0013] Furthermore, the top of the mounting block is hinged and equipped with a handle. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0015] Figure 2 This is an overall structural diagram from another perspective of an embodiment of the present utility model.

[0016] Figure 3 This is a schematic diagram of the support plate structure according to an embodiment of the present utility model.

[0017] Figure 4 This is a schematic diagram of the scale structure according to an embodiment of the present utility model.

[0018] In the above attached diagram: 1. Base; 2. Support leg; 3. Mounting block; 4. Column; 5. Swing rod; 6. Scale; 7. Cantilever; 8. Fixing component; 9. Support plate; 10. Limiting strip; 11. T-block; 12. Positioning pin; 13. Receiving groove; 14. Adjusting screw; 15. Base foot; 16. Adjusting nut; 17. Handle. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1 to 2 As shown in the figure, this utility model embodiment proposes a detachable pendulum friction instrument, including a base 1 and a mounting block 3. The outer wall of the base 1 extends outward to form three legs 2. Each leg 2 is provided with a spirit level and an adjustment component for leveling the base 1. The top of the base 1 is provided with a column 4. The mounting block 3 is slidably fitted onto the column 4 through a sliding groove. The mounting block 3 is provided with a positioning component to limit the sliding of the mounting block 3. The top of the mounting block 3 is provided with a pendulum rod 5, and the free end of the pendulum rod 5 is provided with a pendulum hammer. A scale 6 is detachably provided on one side of the mounting block 3. A cantilever 7 is hingedly provided on the other side of the mounting block 3. A support component is provided on the side wall of the mounting block 3 to horizontally support the cantilever 7. A fixing component 8 for fixing the pendulum rod 5 is provided on the free end of the cantilever 7. Specifically, the friction instrument is also equipped with a pointer and other structures. The pointer is used to point to the scale on the ruler 6 so that the staff can record it for later calculation. The fixing part 8 fixes the horizontal pendulum 5 and releases it when needed. The pendulum is equipped with a rubber block for testing. The above structure is the structure and function of the existing pendulum friction instrument and is not the point of protection of this application. Therefore, it will not be described in detail.

[0021] The bottom of mounting block 3 has a groove that mates with column 4. Mounting block 3 slides onto column 4 through the groove. When storing the device, first rotate the swing arm 5 to one side, and release mounting block 3 through the positioning component, allowing mounting block 3 to slide along column 4, thereby reducing the overall height of the device. Then, remove the ruler 6 and place it on base 1. The support assembly then releases cantilever 7, allowing cantilever 7 to rotate around its hinge end, so that fixing component 8 rotates downward and abuts against the outer wall of mounting block 3. By disassembling and releasing each component, the space occupied by the device during storage is reduced. At the same time, because cantilever 7 rotates around its hinge end to abut against mounting block 3, and ruler 6 is removed and laid flat, it avoids people being injured by sharp parts of the device when passing by, ensuring the safety of passersby.

[0022] like Figure 1 and Figure 3As shown, the support assembly further includes a support plate 9, which is hingedly mounted on the side wall of the column 4 facing the cantilever 7. The bottom of the cantilever 7 has a slot, and the top of the support plate 9 has a limiting strip 10 for insertion into the slot. When this device is needed, the cantilever 7 is first rotated around its hinge end to a horizontal plane. Then, the support plate 9 is rotated so that the limiting strip 10 at the top of the support plate 9 aligns with the slot at the bottom of the cantilever 7. The cantilever 7 is then rotated to a horizontal position, at which point the limiting strip 10 is inserted into the slot of the cantilever 7, and the top surface of the support plate 9 supports the bottom of the cantilever 7. Preferably, to facilitate accurate insertion of the limiting strip 10 into the slot at the bottom of the cantilever 7, the top of the limiting strip 10 has an arc-shaped surface that serves as a guide.

[0023] like Figure 1 and Figure 4 As shown, furthermore, the mounting block 3 has a T-shaped groove on the side facing the scale 6, and the scale 6 has a T-shaped block 11 on the side facing the mounting block 3. The scale 6 is installed by the T-shaped block 11 engaging with the T-shaped groove. Specifically, the depth of the T-shaped groove is the same as the length of the T-shaped block 11. The T-shaped groove is connected to the top of the mounting block 3. The T-shaped block 11 of the scale 6 can be inserted into the T-shaped groove from top to bottom to complete the installation of the scale 6. When removing the scale 6, simply lift the scale 6 upwards to remove the T-shaped block 11 from the T-shaped groove, which is convenient and quick.

[0024] like Figure 1 As shown, the positioning component further includes a positioning pin 12. The mounting block 3 has a threaded hole that connects to the slide groove, and the positioning pin 12 is threadedly connected to the threaded hole. The column 4 has an insertion hole for the end of the positioning pin 12 to be inserted. When the device is not in use, rotating the positioning pin 12 causes it to unscrew from the mounting block 3. The end of the positioning pin 12 facing the column 4 unscrews from the insertion hole in the column 4, thus no longer restricting the movement of the mounting block 3. The mounting block 3 can then slide down, thereby reducing the overall height of the device when stored.

[0025] Furthermore, the fixing member 8 is detachably connected to the cantilever 7, and the mounting block 3 has a receiving groove 13 on its side wall facing the cantilever 7 for accommodating the support plate 9. Specifically, the detachable method between the fixing member 8 and the cantilever 7 can be any of the existing technologies, such as pin connection, snap-fit ​​connection, screw connection, etc. By removing the fixing member 8, the support plate 9 is rotated into the receiving groove 13, and the receiving groove 13 accommodates the support plate 9. At this time, since the cantilever 7 is not blocked by the fixing member 8, the cantilever 7 can be tightly attached to the outer wall of the mounting block 3, while preventing the support plate 9 from falling out of the receiving groove 13. The fixing member 8 can then be placed on the base 1.

[0026] like Figure 1 and Figure 2As shown, the adjustment assembly further includes: an adjustment screw 14, with each leg 2 of the base 1 vertically threaded with an adjustment screw 14. Each adjustment screw 14 is threadedly connected to the corresponding leg 2. One end of each adjustment screw 14 extending out of the leg 2 has a base 15, and the end of each adjustment screw 14 facing away from the base 15 has a handle. Specifically, the base 15 is rotatably connected to the adjustment screw 14. Each leg 2 has a spirit level (not shown in the figure) at its top. When the top of the base 1 is uneven, the adjustment screw 14 is rotated by the handle, causing it to screw in and out of the leg 2, thereby changing the support height of each leg 2 and ensuring the top of the base 1 is level, thus guaranteeing the accuracy of subsequent test results.

[0027] like Figure 1 and Figure 2 As shown, each adjusting screw 14 is further threaded with an adjusting nut 16, which is located on one side of the top of the support leg 2. After leveling the base 1, the adjusting nut 16 is rotated again to make the bottom surface of the adjusting nut 16 fit tightly against the top surface of the support leg 2, so as to prevent the adjusting screw 14 from rotating under the action of vibration during multiple tests, which would cause the base 1 to become uneven again.

[0028] like Figure 1 and Figure 2 As shown, the top of the mounting block 3 is further hingedly provided with a handle 17. The handle 17 facilitates the movement of the device to the desired location by the operator. When not in use, the handle 17 can be rotated and placed flat on top of the mounting block 3.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions 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 solutions of this utility model without departing from the spirit and scope of the technical solutions 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 dismountable tribometer, characterized in that, include: The base (1) has three legs (2) extending outward from its outer wall. Each leg (2) is equipped with a spirit level and an adjustment component for leveling the base (1). Mounting block (3), the top of the base (1) is provided with a column (4), the mounting block (3) is slidably sleeved on the column (4) through a sliding groove, the mounting block (3) is provided with a positioning component to restrict the sliding of the mounting block (3), the top of the mounting block (3) is provided with a swing rod (5), the free end of the swing rod (5) is provided with a pendulum, one side of the mounting block (3) is provided with a scale (6), the other side of the mounting block (3) is provided with a cantilever (7), the side wall of the mounting block (3) is provided with a support component to horizontally support the cantilever (7), the free end of the cantilever (7) is provided with a fixing component (8) for fixing the swing rod (5).

2. A dismountable pendulum friction machine according to claim 1, characterized in that The support assembly includes a support plate (9), which is hingedly disposed on the side wall of the column (4) facing the cantilever (7). The bottom of the cantilever (7) has a slot, and the top of the support plate (9) has a limiting strip (10) for insertion into the slot.

3. The dismountable pendulum friction machine according to claim 1, characterized in that: The mounting block (3) has a T-shaped groove on the side facing the scale (6), and the scale (6) has a T-shaped block (11) on the side facing the mounting block (3). The scale (6) is installed by the T-shaped block (11) and the T-shaped groove.

4. The detachable pendulum friction tester as described in claim 1, characterized in that: The positioning component includes a positioning pin (12), the mounting block (3) is provided with a threaded hole that connects to the slide, the positioning pin (12) is threadedly connected to the threaded hole, and the column (4) is provided with an insertion hole for the end of the positioning pin (12) to be inserted.

5. A detachable pendulum friction tester as described in claim 2, characterized in that: The fastener (8) is detachably connected to the cantilever (7), and the mounting block (3) has a receiving groove (13) on the side wall facing the cantilever (7) for the support plate (9) to be accommodated.

6. A detachable pendulum friction tester as described in claim 1, characterized in that, The adjustment assembly includes: an adjustment screw (14), an adjustment screw (14) is vertically inserted on each leg (2) of the base (1), each adjustment screw (14) is threadedly connected to the corresponding leg (2), each adjustment screw (14) has a base foot (15) at one end protruding from the leg (2), and each adjustment screw (14) has a handle at one end away from the base foot (15).

7. A detachable pendulum friction tester as described in claim 6, characterized in that: Each adjusting screw (14) is also threaded with an adjusting nut (16), which is located on one side of the top of the support (2).

8. A detachable pendulum friction tester as described in claim 1, characterized in that: The top hinge of the mounting block (3) is provided with a handle (17).

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