Roadbed compactness detection device

Abstract

The utility model discloses a roadbed compaction degree detection device, which comprises a base, a detection device, a detection device and a control device, wherein a door-shaped frame is arranged at the front end of the base; the stepping motor is vertically and downwards arranged on the door-shaped frame, and an output shaft of the stepping motor penetrates through a top cross rod of the door-shaped frame; one end of the threaded rotating rod is connected to an output shaft of the stepping motor, and the other end is connected to the base; the sliding plates are arranged on the vertical rods on the two sides of the door-shaped frame in a sliding mode, and the threaded rotating rods vertically penetrate through the sliding plates; the mounting plate is horizontally arranged at the front end of the sliding plate; the driving motor is vertically and downwards arranged on the mounting plate, and an output shaft of the driving motor penetrates through the mounting plate and then is connected to the connecting rod; the top of the transparent sampling barrel is connected to the connecting rod. According to the device, the threaded rotating rod is driven to rotate through the stepping motor, then the sliding plate is driven to slide on the door-shaped frame, the drilling depth of the transparent sampling barrel can be accurately controlled, and meanwhile it can be effectively guaranteed that the drilling direction is perpendicular to the ground through sliding of the sliding plate on the door-shaped frame.

Description

Technical Field

[0001] The utility model relates to the field of highway engineering detection devices, in particular to a subgrade compactness detection device. Background Art

[0002] The subgrade compactness is one of the key indicators for the construction quality inspection of subgrade and pavement, which characterizes the density condition after on-site compaction. The higher the compactness, the greater the density, and the better the overall performance of the material. Therefore, during the highway construction process, it is often necessary to detect the subgrade compactness.

[0003] Currently, the general subgrade compactness detection equipment usually conducts detection through a drill bit. Specifically, the drill rod is driven to rotate by a motor, the sampling cylinder is driven to rotate by the rotating rod, and then the sampling process of the soil is completed by manually pressing down. According to the soil quality in the sampling cylinder and the volume of the drilled hole after the sampling cylinder is taken out, the soil compactness is calculated.

[0004] During this process, the drilling depth is controlled manually. On the one hand, due to the limitations of manual control accuracy, the drilling depth cannot be accurately controlled. On the other hand, the drilling direction cannot be guaranteed, and it is easy to have a situation where the drilling direction deflects during the sampling process, resulting in deviations in the calculation of the overall volume of the drilled hole due to differences in depth and hole diameter, affecting the accuracy of the compactness calculation result. In addition, when taking out the soil in the sampling cylinder, it is also easy for the soil to adhere to the inner wall of the sampling cylinder and be difficult to fall off, resulting in the calculated soil sampling quality being less than the actual soil sampling quality and the calculated soil compactness being inaccurate.

[0005] Therefore, a subgrade pavement compactness detection device is proposed to solve the above technical problems. Content of the Utility Model

[0006] The utility model provides a subgrade compactness detection device, which solves the problem that in the prior art, due to manually controlling the downward pressure of the sampling cylinder, the drilling depth and the drilling direction cannot be accurately controlled.

[0007] To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0008] A subgrade compactness detection device includes:

[0009] A base, with a gantry frame provided at the front end;

[0010] A stepper motor, vertically arranged on the gantry frame, and the output shaft of the stepper motor passes through the top cross bar of the gantry frame;

[0011] A threaded rotating rod, vertically arranged, with one end connected to the output shaft of the stepper motor;

[0012] The sliding plate is slidably arranged on the vertical rods on both sides of the portal frame. The threaded rotary rod vertically penetrates through the sliding plate and is in threaded cooperation with the threaded rotary rod;

[0013] The mounting plate is horizontally arranged at the front end of the sliding plate;

[0014] The driving motor is vertically downwardly arranged on the mounting plate. The output shaft of the driving motor penetrates through the mounting plate and is connected to the connecting rod;

[0015] The transparent sampling cylinder is connected to the connecting rod at the top.

[0016] Particularly, the other end of the threaded rotary rod is rotatably connected to the base.

[0017] Particularly, it further includes a knocking rod for knocking the transparent sampling cylinder.

[0018] Furthermore, the knocking rod is an elastic vertical rod, which is connected to the mounting plate through the fixing block at the top, and a knocking head close to the wall of the transparent sampling cylinder is provided at the bottom.

[0019] Particularly, it further includes a fixing seat arranged on the base. The fixing seat is provided with a connecting groove opening towards the front end of the base; it further includes a splash-proof ring located on the periphery of the bottom of the transparent sampling cylinder. The splash-proof ring is provided with a connecting plate along the circumferential tangent direction. The end of the connecting plate is inserted into the connecting groove and locked with the fixing seat.

[0020] Furthermore, the connecting plate includes a connecting end plate connected to the fixing seat, and further includes a vertical adjusting end plate arranged along the circumferential tangent direction of the splash-proof ring. A number of vertically arranged first connecting holes are provided on the adjusting end plate, and second connecting holes matching the first connecting holes are provided on the connecting end plate; it further includes connecting bolts for connecting the first connecting holes and the second connecting holes.

[0021] Particularly, moving wheels are further provided at the bottom of the base, and a moving push handle is further provided at the rear end of the base.

[0022] Compared with the prior art, the present utility model has the following advantages and beneficial effects: The present utility model drives the threaded rotary rod to rotate through the stepping motor, and then drives the sliding plate to slide on the portal frame, so as to accurately control the drilling depth of the transparent sampling cylinder. At the same time, by sliding the sliding plate on the portal frame, it can effectively ensure that the drilling direction is always consistent, and avoid the deviation of the sampling drilling direction caused by manual control. Description of the Drawings

[0023] Figure 1 It is a schematic side view structure diagram of the device of the present utility model.

[0024] Figure 2 It is a schematic front view structure diagram of the device of the present utility model.

[0025] Figure 3 This is a schematic top view structure diagram of the device of the present utility model.

[0026] Figure 4 It is a schematic diagram showing the connection relationship between the adjusting end plate and the connecting end plate.

[0027] The interpretations of the reference numerals in the figure are as follows: base - 1; gantry - 2; stepper motor - 3; threaded rotating rod - 4; sliding plate - 5; mounting plate - 6; driving motor - 7; connecting rod - 8; transparent sampling cylinder - 9; knocking rod - 10; knocking head - 11; fixed seat - 12; connecting groove - 13; splash - proof ring - 14; connecting plate - 15; connecting end plate - 1501; adjusting end plate - 1502; first connection hole - 1503; second connection hole - 1504; moving wheel - 16; moving push handle - 17. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model, so as to have a further understanding of the concept, the technical problems to be solved, the technical features constituting the technical solutions, and the technical effects brought about by the present utility model.

[0029] As Figures 1 to 3 shown, a subgrade compactness detection device includes:

[0030] A base 1, with a gantry 2 provided at the front end;

[0031] A stepper motor 3, vertically downwardly arranged on the gantry 2, and the output shaft of the stepper motor 3 passes through the top cross bar of the gantry 2;

[0032] A threaded rotating rod 4, vertically arranged, with one end connected to the output shaft of the stepper motor 3;

[0033] A sliding plate 5, slidably arranged on the vertical rods on both sides of the gantry 2, the threaded rotating rod 4 vertically penetrates the sliding plate 5 and is in threaded cooperation with the threaded rotating rod 4;

[0034] A mounting plate 6, horizontally arranged at the front end of the sliding plate 5;

[0035] A driving motor 7, vertically downwardly arranged on the mounting plate 6, and the output shaft of the driving motor 7 penetrates the mounting plate 6 and is then connected to a connecting rod 8;

[0036] A transparent sampling cylinder 9, with the top connected to the connecting rod 8.

[0037] In the present utility model, the main working process is as follows: First, the output shaft of the stepping motor 3 drives the threaded rotating rod 4 to rotate. The threaded rotating rod 4 drives the sliding plate 5 to slide downward on the vertical rod of the portal frame 2, thereby driving the mounting plate 6, the driving motor 7, and the transparent sampling cylinder 9 to descend together until the bottom of the transparent sampling cylinder 9 contacts the soil surface. At this time, by starting the driving motor 7, the driving motor 7 drives the transparent sampling cylinder 9 to rotate, and cooperates with the stepping motor 3 for precise descent. Specifically, the stepping motor 3 rotates in units of "steps" and has obvious digital characteristics. Therefore, when the control system of the stepping motor 3 sends a pulse signal, the stepping motor 3 rotates a step angle through the driver. That is to say, the rotation speed of the stepping motor 3 is proportional to the frequency of the pulse signal. So by controlling the number of stepping pulses, the motor can be accurately positioned, thereby achieving precise control of the drilling depth. After sampling is completed, by driving the stepping motor 3 in reverse, the transparent sampling cylinder 9 can be driven to rise. When the transparent sampling cylinder 9 is completely lifted out of the soil, the soil taken out from the transparent sampling cylinder 9 is collected by a container for subsequent measurement operations. During this process, since the base 1 is directly placed on the ground, it can ensure that the base 1 is parallel / fitted with the ground throughout the process, thereby ensuring that the descending drilling process of the transparent sampling cylinder 9 always remains perpendicular to the ground, and further ensuring the drilling angle. It should be noted that the transparent sampling cylinder 9 in the present utility model is made of rigid polyvinyl chloride or acrylonitrile-butadiene-styrene polymer transparent pipe, and a cutting head for tunneling is provided at the bottom, so as to ensure the normal progress of the tunneling process and also ensure that the transparent sampling cylinder 9 will not be damaged during the drilling process. Using transparent pipes also facilitates the inspectors to directly observe the sampling situation inside the transparent sampling cylinder 9.

[0038] As a preferred embodiment, the other end of the threaded rotating rod 4 is rotatably connected to the base 1.

[0039] In this embodiment, rotatably connecting the other end of the threaded rotating rod 4 to the base 1 can effectively ensure the stability of the sliding process of the sliding plate 5 on the vertical rods on both sides of the portal frame 2, and at the same time prevent the sliding plate 5 from slipping off the threaded rotating rod 4. Specifically, rotatably connecting the threaded rotating rod 4 to the base 1 can ensure that the sliding plate 5 does not shake in the horizontal direction during the sliding process, ensuring the relative positional relationship among the threaded rotating rod 4, the portal frame, and the sliding plate 5, thereby ensuring the stability of the sliding plate 5. In addition, usually, the portal frame 2 is perpendicular to the base 1. Therefore, when the base 1 is parallel / fitted with the ground, the portal frame 2 can always remain perpendicular to the road surface, ensuring that the shape of the sample taken by the transparent sampling cylinder 9 is a cylinder, which is beneficial to accurately determining the sampling volume.

[0040] As a preferred embodiment, it further includes a knocking rod 10 for knocking the transparent sampling cylinder 9.

[0041] In this embodiment, an additional knocking rod 10 is provided to vibrate and remove the soil attached to the inside of the transparent sampling tube 9, thereby avoiding the reduction in the quality of the sampled soil actually collected due to the soil attached to the inner wall of the transparent sampling tube 9, thereby affecting the accuracy of the subsequent compaction calculation results.

[0042] As an embodiment, the knocking rod 10 can be a rubber hammer. When it is necessary to remove the attached soil, the construction workers manually knock on the transparent sampling tube 9 where the soil is attached.

[0043] As a preferred embodiment, the knocking rod 10 is an elastic vertical rod connected to the mounting plate 6 via a fixing block at the top, and a knocking head 11 close to the wall of the transparent sampling tube 9 is provided at the bottom.

[0044] In the present embodiment, a specific structure of a knocking rod 10 is provided. Specifically, the knocking rod 10 is a vertical rod, which is connected to the mounting plate 6 through a fixing block at the top, so that the knocking rod 10 is connected to the device of the utility model as a whole, which is convenient for storage and transportation. It should be noted that the knocking rod 10 here is a rod with a certain elasticity. By manually moving the knocking rod 10 outward, there is a certain offset between the knocking rod 10 itself and the transparent sampling tube 9, and elastic potential energy is accumulated during the moving process. After the knocking rod 10 is released, the knocking rod 10 releases the elastic potential energy and rebounds, so that the knocking head 11 directly knocks on the transparent sampling tube 9, thereby knocking off the soil attached to the inner wall of the transparent sampling tube 9.

[0045] As a preferred embodiment, it also includes a fixing seat 12 arranged on the base 1, and the fixing seat 12 has a connecting groove 13 opening toward the front end of the base 1; it also includes a splash-proof ring 14 located on the periphery of the bottom of the transparent sampling tube 9, and the splash-proof ring 14 is provided with a connecting plate 15 along the tangential direction of the circumference, and the end of the connecting plate 15 is inserted into the connecting groove 13 and locked with the fixing seat 12.

[0046] In this embodiment, a splash-proof ring 14 is provided and is sleeved on the outer periphery of the bottom of the transparent sampling tube 9, thereby protecting the drilling process and preventing soil from splashing and injuring people. It can also prevent soil from flying out during drilling, resulting in a reduction in soil quality in the later stage, thereby ensuring the accuracy of the detection results.

[0047] As a further embodiment, the connecting plate 15 includes a connecting end plate 1501 connected to the fixed seat 12, and further includes a vertical adjusting end plate 1502 arranged along the circumferential tangent direction of the splash-proof ring 14. A plurality of vertically arranged first connecting holes 1503 are provided on the adjusting end plate 1502, and a second connecting hole 1504 matching with the first connecting hole 1503 is provided on the connecting end plate 1501; it further includes a connecting bolt for connecting the first connecting hole 1503 and the second connecting hole 1504.

[0048] In this embodiment, a structure for adjusting the height of the splash-proof ring 14 is provided. Specifically, as Figure 4 shown, the connecting end plate 1501 is used to connect the splash-proof ring 14 to the fixed seat 12, and the adjusting end plate 1502 is used to adjust the height where the second connecting hole 1504 matching with the first connecting hole 1503 is located. By selecting the second connecting holes 1504 at different heights, the adjustment of the height of the splash-proof ring 14 is realized, ensuring that the device of the present utility model can adapt to different ground height conditions and increasing the versatility of the device of the present utility model.

[0049] As a preferred embodiment, a moving wheel 16 is further provided at the bottom of the base 1, and a moving push handle 17 is further provided at the rear end of the base 1.

[0050] In this embodiment, a structure for pushing the base 1 to move is provided, so as to facilitate the rapid adjustment of the sampling position.

[0051] The "connection" and "fixation" appearing in the description of the present utility model can be fixed connection, machining, welding, or mechanical connection. Understand the specific meanings of the above terms in the present utility model according to the specific situation.

[0052] In the description of the present utility model, terms such as "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying a specific orientation that the indicated device or element must have. Therefore, it cannot be understood as a limitation to the present utility model.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A roadbed compaction detection device, characterized in that: include: A base (1) with a door-shaped frame (2) at the front end; A stepper motor (3) is arranged vertically downward on the gantry (2), and an output shaft of the stepper motor (3) passes through a top crossbar of the gantry (2); A threaded rotating rod (4) is arranged vertically, one end of which is connected to the output shaft of the stepping motor (3); A sliding plate (5) is slidably arranged on the vertical rods on both sides of the gantry (2); a threaded rotating rod (4) vertically penetrates the sliding plate (5) and is threadably matched with the threaded rotating rod (4); A mounting plate (6) is horizontally arranged at the front end of the sliding plate (5); A drive motor (7) is arranged vertically downward on the mounting plate (6), and an output shaft of the drive motor (7) passes through the mounting plate (6) and is connected to the connecting rod (8); A transparent sampling tube (9) is connected to the connecting rod (8) at the top.

2. A roadbed compaction detection device as claimed in claim 1, characterized in that: The other end of the threaded rotating rod (4) is rotatably connected to the base (1).

3. A roadbed compaction detection device as claimed in claim 1, characterized in that: It also includes a knocking rod (10) for knocking the transparent sampling tube (9).

4. A roadbed compaction detection device as claimed in claim 3, characterized in that: The knocking rod (10) is an elastic vertical rod connected to the mounting plate (6) via a fixing block at the top, and a knocking head (11) is provided at the bottom close to the wall of the transparent sampling tube (9).

5. A roadbed compaction detection device as claimed in claim 1, characterized in that: It also includes a fixing seat (12) arranged on the base (1), the fixing seat (12) having a connecting groove (13) opening toward the front end of the base (1); and an anti-splash ring (14) located at the periphery of the bottom of the transparent sampling tube (9), the anti-splash ring (14) being provided with a connecting plate (15) along the circumferential tangent direction, the end of the connecting plate (15) being inserted into the connecting groove (13) and locked with the fixing seat (12).

6. A roadbed compaction detection device as claimed in claim 5, characterized in that: The connecting plate (15) comprises a connecting end plate (1501) connected to the fixing seat (12), and also comprises a vertical adjusting end plate (1502) arranged along the tangential direction of the circumference of the splash ring (14), the adjusting end plate (1502) being provided with a plurality of vertically arranged first connecting holes (1503), and the connecting end plate (1501) being provided with second connecting holes (1504) cooperating with the first connecting holes (1503); and also comprises connecting bolts for connecting the first connecting holes (1503) and the second connecting holes (1504).

7. A roadbed compaction detection device as claimed in claim 1, characterized in that: The bottom of the base (1) is also provided with a moving wheel (16), and the rear end of the base (1) is also provided with a moving handle (17).

Images