Portable detection tool for highway subgrade compaction degree

Abstract

The application discloses a portable detection tool for highway roadbed compactness, and relates to the technical field of road engineering detection, which comprises a support, moving wheels, detection wheels, increment devices, a subsidence detection device and an alarm device. At least two moving wheels, at least two increment devices, the subsidence detection device and the alarm device are arranged on the support, the alarm device is electrically connected with the subsidence detection device, the detection wheels are lifted on the support, and the feeding end of the detection wheels is communicated with the discharging end of the increment devices. The application realizes quantitative addition of steel balls by using the cooperation of the transfer shell, the rotating rod, the spring and the rotating handle, and the weight of the detection wheels can be quickly adjusted without disassembling the detection wheels, so that the operation is simple and the weight adjustment efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of road engineering testing technology, specifically to a portable testing tool for the compaction degree of highway subgrade. Background Technology

[0002] In road subgrade compaction testing, roller-type testing devices are commonly used. The degree of compaction is evaluated by the amount of settlement of the testing wheel as it rolls on the subgrade surface. To enable the testing wheel to simulate different rolling loads or adapt to different subgrade conditions, it is usually necessary to adjust the ground pressure ratio between the testing wheel and the subgrade, i.e., to change the overall weight of the testing wheel.

[0003] In existing technologies, the weight adjustment of the detection wheel is mainly accomplished through manual disassembly and assembly. Operators must first stop the inspection work, remove the detection wheel from the device or open its end cap, then add counterweight material inside the wheel, adjust it, and then reassemble it. The entire process is cumbersome and time-consuming. The amount of counterweight material added usually relies on manual estimation, which is difficult to control precisely and can easily lead to inconsistent inspection conditions each time. Furthermore, the counterweight material is prone to spillage during operation, causing waste and on-site safety hazards.

[0004] Therefore, it is necessary to improve the existing roller compaction testing device to simplify the counterweight adjustment operation, reduce the spillage of counterweight material, and improve the convenience of counterweight adjustment. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0006] To achieve the above objectives, the first aspect of the present invention provides a portable testing fixture for the compaction degree of highway subgrade, comprising: a support, movable wheels, a testing wheel, an incrementing device, a settlement detection device, and an alarm device, wherein at least two of the movable wheels, at least two of the incrementing devices, the settlement detection device, and the alarm device are all mounted on the support, and the alarm device is electrically connected to the settlement detection device; the testing wheel is raised and lowered on the support, and its feed end is connected to the discharge end of the incrementing device; the incrementing device comprises: a hose, a transmission pipe, a storage bin, a transfer shell, a fixing plate, a rotating rod, a spring, and a handle, wherein one end of the hose is connected to the feed end of the testing wheel, and the other end extends upwards... The transmission pipe extends through the support frame; the storage hopper is mounted on the support frame via a mounting bracket; one end of the transmission pipe is connected to the flexible hose, and the other end is mounted on the bottom of the storage hopper via the mounting bracket; the transfer housing rotates between the other end of the transmission pipe and the bottom of the storage hopper, and has a transfer groove on it, selectively communicating with the bottom of the storage hopper; the fixing plate is mounted on the storage hopper; one end of the rotating rod is connected to the fixing plate via a bearing, and the other end is connected to the transfer housing; the spring is sleeved on the rotating rod, and its two ends are respectively connected to the transfer housing and the fixing plate; the handle is rotatably mounted on the fixing plate, and one end of it passes through the fixing plate and is connected to the rotating rod.

[0007] In addition, the portable testing tool for roadbed compaction proposed according to the present invention may also have the following additional technical features:

[0008] Furthermore, there are two of each of the moving wheels and the incremental device, and the two storage bins are used to hold steel balls of different total weights.

[0009] Further, the detection wheel includes: a positioning rod, a limiting block, a transmission rod, a storage shell, a protective shell, and an annular plate. Two positioning rods are respectively disposed at the bottom of the bracket, and limiting grooves are formed on the opposite sides of each positioning rod. Two limiting blocks are respectively raised and lowered within the two limiting grooves. Two transmission rods are respectively disposed on the opposite sides of the two limiting blocks, and annular grooves are formed on each of them. The storage shell is disposed at the opposite ends of the two transmission rods, and the interior of the storage shell is divided into two independent storage chambers by a partition. One end of each of the two flexible tubes extends into the storage shell and corresponds to each storage chamber. Two protective shells are rotatably fitted onto the opposite sides of the storage shell. One end of each of the two annular plates is connected to the opposite sides of the two protective shells, and the other end is rotatably engaged within each annular groove.

[0010] Furthermore, the limiting groove is a T-shaped groove, and the limiting block that cooperates with it is a T-shaped block.

[0011] Furthermore, a push rod is provided on the bracket.

[0012] Furthermore, the sinking detection device is a displacement sensor, which is located at the bottom of the bracket, with its detection end facing the top of the protective shell.

[0013] Furthermore, the alarm device includes: a controller, an audible and visual alarm, and a display screen, wherein the controller, the audible and visual alarm, and the display screen are all mounted on the bracket, and the controller is electrically connected to the sinking detection device, and the audible and visual alarm and the display screen are both electrically connected to the controller.

[0014] Furthermore, the controller has multiple preset sinking thresholds.

[0015] Furthermore, the bottom of the storage shell has two threaded holes that communicate with the two storage cavities respectively, and a knob is threaded into the threaded hole.

[0016] The present invention provides a portable testing fixture for the compaction degree of highway subgrade. Through an incremental device, the fixture utilizes the cooperation of a transfer shell, a rotating rod, a spring, and a rotating handle to achieve quantitative addition of steel balls. The weight of the testing wheel can be quickly adjusted without disassembling the testing wheel, making it easy to operate and highly efficient in counterweight adjustment. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a portable testing tool for the compaction degree of highway subgrade according to an embodiment of the present invention;

[0019] Figure 2 This is a three-dimensional structural schematic diagram of another portable testing tool for roadbed compaction according to an embodiment of the present invention;

[0020] Figure 3 This is a portable testing tool for the compaction degree of highway subgrade according to an embodiment of the present invention. Figure 2 A schematic diagram of the three-dimensional structure cross-section;

[0021] Figure 4 This is an exploded three-dimensional structural diagram of the testing wheel of a portable testing tool for roadbed compaction according to an embodiment of the present invention.

[0022] Figure 5 This is an exploded three-dimensional structural diagram of the storage shell and knob of a portable testing tool for roadbed compaction according to an embodiment of the present invention.

[0023] As shown in the figure:

[0024] 1. Bracket; 2. Casters; 3. Detection wheel; 31. Positioning rod; 311. Limiting groove; 32. Limiting block; 33. Transmission rod; 331. Annular groove; 34. Storage shell; 341. Storage cavity; 342. Threaded hole; 343. Knob; 35. Protective shell; 36. Annular plate; 4. Increasing device; 41. Hoses; 42. Transmission pipe; 43. Storage bin; 44. Transfer shell; 441. Transfer trough; 45. Fixing plate; 46. Rotating rod; 47. Spring; 48. Turning handle; 5. Sinking detection device; 6. Alarm device; 61. Controller; 62. Audible and visual alarm; 63. Display screen; 7. Push rod. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below, with examples of the embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] The following description, in conjunction with the accompanying drawings, describes a portable testing tool for the compaction degree of highway subgrade according to an embodiment of the present invention.

[0027] like Figures 1 to 5 As shown in the figure, a portable testing fixture for roadbed compaction according to an embodiment of the present invention includes: a support 1, a moving wheel 2, a testing wheel 3, an incremental device 4, a settlement testing device 5, and an alarm device 6.

[0028] Among them, at least two moving wheels 2, at least two incremental devices 4, a sinking detection device 5 and an alarm device 6 are all installed on the support 1, and the alarm device 6 is electrically connected to the sinking detection device 5. The detection wheel 3 is raised and lowered on the support 1, and its feeding end is connected to the discharging end of the incremental device 4.

[0029] It should be noted that the support 1 is equipped with a push rod 7, which facilitates the movement of the entire testing fixture along the roadbed surface, effectively improving the portability and ease of operation of the device.

[0030] The detection wheel 3 includes: a positioning rod 31, a limiting block 32, a transmission rod 33, a storage shell 34, a protective shell 35, and an annular plate 36.

[0031] Two positioning rods 31 are respectively set at the bottom of the bracket 1, and each of the two positioning rods 31 has a limiting groove 311 on its opposite side. Two limiting blocks 32 are respectively raised and lowered in the two limiting grooves 311. Two transmission rods 33 are respectively set on the opposite side of the two limiting blocks 32, and each of them has an annular groove 331. The storage shell 34 is set on the opposite end of the two transmission rods 33, and the interior of the storage shell 34 is divided into two independent storage chambers 341 by a partition. One end of each of the two hoses 41 is inserted into the storage shell 34 and corresponds to each storage chamber 341. Two protective shells 35 are rotatably covered on the opposite side of the storage shell 34. One end of each of the two annular plates 36 is connected to the opposite side of the two protective shells 35, and the other end is rotatably engaged in each annular groove 331.

[0032] As one possible scenario, the limiting groove 311 is a T-shaped groove, and the limiting block 32 that cooperates with it is a T-shaped block, to prevent the limiting block 32 from detaching from the device.

[0033] It should be noted that the bottom of the storage shell 34 has two threaded holes 342 that are respectively connected to the two storage cavities 341. The threaded holes 342 are threaded with knobs 343 to facilitate material discharge and reduce the weight of the detection wheel 3.

[0034] The incremental device 4 includes: a hose 41, a transmission pipe 42, a storage bin 43, a transfer shell 44, a fixing plate 45, a rotating rod 46, a spring 47, and a throttle 48.

[0035] One end of the hose 41 is connected to the feed end of the detection wheel 3, and the other end extends upward and passes through the bracket 1. The storage bin 43 is mounted on the bracket 1 via a mounting bracket. One end of the transmission pipe 42 is connected to the hose 41, and the other end is mounted at the bottom of the storage bin 43 via a mounting bracket. The transfer shell 44 rotates between the other end of the transmission pipe 42 and the bottom of the storage bin 43, and has a transfer groove 441 on it, which selectively communicates with the bottom of the storage bin 43. The fixing plate 45 is mounted on the storage bin 43. One end of the rotating rod 46 is connected to the fixing plate 45 via a bearing, and the other end is connected to the transfer shell 44. The spring 47 is sleeved on the rotating rod 46, and its two ends are connected to the transfer shell 44 and the fixing plate 45 respectively. The handle 48 is rotatably mounted on the fixing plate 45, and one end of it passes through the fixing plate 45 and is connected to the rotating rod 46.

[0036] It should be noted that there are two mobile wheels 2 and two incremental devices 4, and the two storage bins 43 are used to hold steel balls with different total weights. By adding counterweights of different weights, the weight of the detection wheel 3 can be flexibly adjusted, so as to select to add lighter or heavier steel balls according to different roadbed conditions, change the grounding specific voltage of the detection wheel 3, and improve the adaptability of the device and the reliability of the detection results.

[0037] It should be noted that the top of the storage bin 43 is fitted with an openable and closable cover to prevent the steel balls inside from popping out due to vibration during operation.

[0038] Specifically, one storage bin 43 contains high-quality steel balls, and another storage bin 43 contains low-quality steel balls. This allows operators to select different counterweight sources as needed, enabling step-by-step selection of counterweight adjustment without having to change the counterweight material. The multiple steel balls in each bin have the same mass, ensuring that the weight of the steel balls falling into the detection wheel 3 through the transfer chute 441 is consistent each time. This allows for precise control of the amount of counterweight increase per cycle, improving the accuracy and repeatability of counterweight adjustment, avoiding counterweight errors caused by individual weight differences of the steel balls, and ensuring the consistency of detection conditions.

[0039] It should be noted that spring 47 is a torsion spring, which can withstand torsional force, thereby driving the transfer housing 44 to reset.

[0040] It should be noted that the sinking detection device 5 is a displacement sensor and is located at the bottom of the bracket 1, with its detection end facing the top of the protective shell 35.

[0041] The alarm device 6 includes: a controller 61, an audible and visual alarm 62, and a display screen 63.

[0042] The controller 61, the audible and visual alarm 62, and the display screen 63 are all mounted on the bracket 1. The controller 61 is electrically connected to the sinking detection device 5, and the audible and visual alarm 62 and the display screen 63 are electrically connected to the controller 61.

[0043] It should be noted that the controller 61 has multiple preset sinking thresholds, which can realize graded alarms. According to the different ranges in which the detection wheel 3 sinks, the controller 61 can control the sound and light alarm 62 to emit different forms of alarm signals (such as different colors or sounds) and display the corresponding status on the display screen 63.

[0044] Specifically, the operating principle of this invention is as follows:

[0045] According to the actual condition of the roadbed to be tested, the operator selects to add steel balls from the corresponding storage bin 43 into the testing wheel 3: turn the handle 48, the handle 48 drives the rotating rod 46 to rotate, the rotating rod 46 drives the transfer shell 44 to rotate, so that the transfer groove 441 rotates to align with the upper end of the transmission pipe 42 (before rotation, there is already a steel ball in the transfer groove 441 and it is connected to the storage bin 43). Under the action of gravity, the steel ball falls into the corresponding storage cavity 341 in the testing wheel 3 through the transmission pipe 42 and the hose 41, thereby increasing the weight of the testing wheel 3.

[0046] It should be noted that the two storage bins 43 contain steel balls of different total weights. Operators can choose to add lighter or heavier steel balls as needed to adjust the ground pressure ratio of the detection wheel 3 to the roadbed.

[0047] The detection wheel 3 descends within the limiting groove 311 via the limiting block 32, causing it to contact the roadbed surface. The operator pushes the push rod 7, and the moving wheel 2 moves the entire device along the roadbed. The detection wheel 3 rolls on the roadbed surface. When the roadbed compaction is insufficient, the detection wheel 3 sinks relative to the support 1. The protective shell 35 moves down synchronously with the detection wheel 3. The sinking detection device 5 detects the vertical displacement of the top of the protective shell 35 and transmits the sinking signal to the controller 61. The controller 61 compares the sinking amount with a preset threshold. When the corresponding threshold is exceeded, the controller controls the audible and visual alarm 62 to issue an alarm signal. At the same time, the display screen 63 displays the current sinking value and alarm status.

[0048] When it is necessary to reduce the weight of the storage shell 34, simply unscrew the knob 343 to discharge the steel balls from the storage chamber 341 through the threaded hole 342.

[0049] In summary, the portable testing fixture for roadbed compaction according to an embodiment of the present invention, through the incremental device 4, utilizes the cooperation of the transfer shell 44, the rotating rod 46, the spring 47, and the handle 48 to achieve quantitative addition of steel balls. The weight of the testing wheel 3 can be quickly adjusted without disassembling it, making operation simple and the counterweight adjustment efficiency high. Furthermore, by setting two storage bins 43 to hold steel balls of different weights, corresponding to two independent storage chambers 341 within the testing wheel 3, different weights of steel balls can be added to the testing wheel 3 respectively, meeting different roadbed compaction testing requirements and improving the device's adaptability. Moreover, by setting a sinking detection device 5 and an alarm device 6, the sinking amount of the testing wheel 3 can be acquired in real time and an alarm can be triggered when the sinking exceeds a threshold, facilitating timely judgment of the roadbed compaction status by operators and improving testing accuracy and on-site work efficiency.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications should also be considered within the scope of protection of the present invention.

[0051] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A portable testing tool for highway subgrade compaction, characterized in that, include: The system includes a support frame (1), casters (2), detection wheels (3), an incremental device (4), a sinking detection device (5), and an alarm device (6), among which... At least two of the aforementioned moving wheels (2), at least two of the aforementioned incremental devices (4), the aforementioned sinking detection device (5) and the aforementioned alarm device (6) are all mounted on the bracket (1), and the aforementioned alarm device (6) is electrically connected to the aforementioned sinking detection device (5); The detection wheel (3) is raised and lowered on the bracket (1), and its feed end is connected to the discharge end of the incremental device (4); The incremental device (4) includes: a hose (41), a transmission pipe (42), a storage bin (43), a transfer shell (44), a fixing plate (45), a rotating rod (46), a spring (47), and a throttle (48), wherein, One end of the hose (41) is connected to the feed end of the detection wheel (3), and the other end extends upward and passes through the bracket (1). The storage bin (43) is mounted on the bracket (1) via a mounting frame; One end of the transmission pipe (42) is connected to the hose (41), and the other end is set at the bottom of the storage bin (43) through a mounting bracket; The transfer shell (44) rotates between the other end of the transfer pipe (42) and the bottom of the storage bin (43), and a transfer groove (441) is provided on it, which is selectively connected to the bottom of the storage bin (43); The fixing plate (45) is installed on the storage bin (43); One end of the rotating rod (46) is connected to the fixed plate (45) via a bearing, and the other end is connected to the transfer housing (44); The spring (47) is sleeved on the rotating rod (46), and its two ends are connected to the transfer shell (44) and the fixing plate (45) respectively; The throttle (48) is rotatably mounted on the fixed plate (45), with one end passing through the fixed plate (45) and connected to the rotating rod (46).

2. The portable testing tool for highway subgrade compaction according to claim 1, characterized in that, The number of the moving wheels (2) and the incremental device (4) are both two, and the two storage bins (43) are used to hold steel balls with different total weights.

3. The portable testing tool for highway subgrade compaction according to claim 1, characterized in that, The detection wheel (3) includes: a positioning rod (31), a limiting block (32), a transmission rod (33), a storage shell (34), a protective shell (35), and an annular plate (36), wherein, The two positioning rods (31) are respectively disposed at the bottom of the bracket (1), and a limit groove (311) is provided on the opposite side of the two positioning rods (31). The two limiting blocks (32) rise and fall within the two limiting grooves (311) respectively; The two transmission rods (33) are respectively arranged on opposite sides of the two limiting blocks (32), and each of them has an annular groove (331). The storage shell (34) is located on the opposite ends of the two transmission rods (33), and the interior of the storage shell (34) is divided into two independent storage chambers (341) by a partition. One end of each of the two hoses (41) extends into the storage shell (34) and corresponds to each storage chamber (341). The two protective shells (35) are rotatably fitted onto the opposite sides of the storage shell (34); One end of each of the two annular plates (36) is connected to the opposite side of the two protective shells (35), and the other end is rotatably engaged in each of the annular grooves (331).

4. The portable testing tool for highway subgrade compaction according to claim 3, characterized in that, The limiting groove (311) is a T-shaped groove, and the limiting block (32) that cooperates with it is a T-shaped block.

5. The portable testing tool for highway subgrade compaction according to claim 1, characterized in that, A push rod (7) is provided on the bracket (1).

6. The portable testing tool for highway subgrade compaction according to claim 3, characterized in that, The sinking detection device (5) is a displacement sensor and is located at the bottom of the bracket (1), with its detection end facing the top of the protective shell (35).

7. The portable testing tool for highway subgrade compaction according to claim 1, characterized in that, The alarm device (6) includes: a controller (61), an audible and visual alarm (62), and a display screen (63), wherein, The controller (61), the audible and visual alarm (62), and the display screen (63) are all mounted on the bracket (1), and the controller (61) is electrically connected to the sinking detection device (5), and the audible and visual alarm (62) and the display screen (63) are both electrically connected to the controller (61).

8. The portable testing tool for highway subgrade compaction according to claim 7, characterized in that, The controller (61) has multiple preset sinking thresholds.

9. A portable testing tool for highway subgrade compaction according to claim 3, characterized in that, The bottom of the storage shell (34) has two threaded holes (342) that communicate with the two storage cavities (341) respectively, and a knob (343) is threaded into the threaded hole (342).

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