Pavement base layer measuring device for highway construction

Abstract

The utility model relates to the technical field of road construction measurement, and discloses a road surface base course measuring device for road construction, which comprises a support frame with through holes distributed at the bottom; the driving piece and the sampling barrel are movably connected to the supporting frame in the vertical direction, and the driving piece is used for driving the sampling barrel to rotate; the lower end of the downward pressing assembly is provided with a telescopic elastic assembly, the downward pressing assembly is connected with the driving part through the elastic assembly, and the downward pressing assembly is used for driving the sampling barrel to selectively penetrate through the through hole. By arranging the elastic assembly, the descending speed of the downward pressing assembly is controlled by observing the compression degree of the elastic assembly in the core drilling process, large downward pressing force provided for the sampling barrel is avoided, and the drill jamming phenomenon is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of highway construction surveying, and particularly relates to a pavement base layer surveying device for highway construction. Background Art

[0002] During the highway construction process, the surveying of the pavement base layer is a key link to ensure the construction quality. Generally, the measurement work is carried out by sampling.

[0003] The patent with the publication number CN215953029U discloses a pavement base layer surveying device for road construction. A pressure sensor is arranged in the sampling cylinder. The pressure sensor will detect the pressure of the sampled material inside the sampling cylinder in real time. When the sampled material is too much or has a large hardness, resulting in the downward pressure of the sampling cylinder exceeding the preset value of the pressure in the PLC control board, the PLC control board will automatically control the motor to reset upward, avoiding the phenomenon that the sampling cylinder is damaged due to excessive pressure in this solution.

[0004] The above pavement base layer surveying device can only detect the pressure inside the sampling cylinder and cannot detect the downward pressure applied to the sampling cylinder. When the sampling cylinder cannot cut the road surface structure quickly, the situation of the sampling cylinder getting stuck during the downward movement of the sampling cylinder occurs, resulting in the inability to continue sampling. Summary of the Utility Model

[0005] The utility model aims to provide a pavement base layer surveying device for highway construction to overcome the above deficiencies.

[0006] In order to achieve the above object, the technical solution of the utility model is as follows:

[0007] A pavement base layer surveying device for highway construction, comprising:

[0008] A support frame with through holes arranged at the bottom;

[0009] A driving member and a sampling cylinder movably connected to the support frame in the vertical direction, the driving member being used to drive the sampling cylinder to rotate; and

[0010] A downward pressing assembly, the lower end of the downward pressing assembly is provided with a telescopic elastic assembly, the downward pressing assembly is connected to the driving member through the elastic assembly, and the downward pressing assembly is used to drive the sampling cylinder to selectively penetrate through the through hole.

[0011] Further, the elastic assembly includes:

[0012] A sliding plate connected to one of the lower end of the downward pressing assembly or the driving member;

[0013] a sliding sleeve connected to the lower end of the pressing assembly or the other of the driving members, the opening of the sliding sleeve being arranged upward, and the sliding plate being slidably connected to the inner side wall of the sliding sleeve; and

[0014] An elastic member is arranged between the sliding plate and the sliding sleeve, and is used for driving the sliding plate and the sliding sleeve to move away from each other.

[0015] Further,

[0016] The lower end of the pressing assembly is fixedly connected to the sliding plate, and the driving member is fixedly connected to the sliding sleeve;

[0017] The elastic member includes a first magnet and a second magnet connected to the bottom plate of the sliding plate and the sliding sleeve in a one-to-one correspondence, and the opposite magnetic poles of the first magnet and the second magnet are the same.

[0018] Furthermore, the outer side wall of the sliding plate is provided with a sliding protrusion, the side wall of the sliding sleeve is provided with a sliding groove arranged along the vertical direction, and the sliding protrusion is slidably connected to the sliding groove.

[0019] Furthermore, the pressing assembly comprises:

[0020] a threaded rod arranged in a vertical direction, wherein the threaded rod is threadedly connected to the support frame; and

[0021] A pressing block is fixedly connected to the lower end of the threaded rod, and a groove is arranged on the upper surface of the sliding plate, and the pressing block is movably connected to the groove.

[0022] Furthermore, the pressing assembly further comprises:

[0023] A frame fixedly connected within the support frame;

[0024] A sliding rod slidably connected to the frame in a vertical direction, the upper end of the sliding rod is fixedly connected to the sliding sleeve, the lower end of the sliding rod is fixedly connected to a mounting sleeve, and the opening of the mounting sleeve is arranged downward; and

[0025] A compression spring is sleeved on the peripheral side of the sliding rod, and two ends of the compression spring are respectively connected to the sliding sleeve and the upper surface of the frame, and the acting force of the compression spring is smaller than the acting force between the first magnet and the second magnet.

[0026] Furthermore, the driving member includes a driving motor fixedly connected in the mounting sleeve, and an output shaft of the driving motor is drivingly connected to the sampling barrel.

[0027] Furthermore, the support frame comprises:

[0028] The bottom support plate provided with the through holes, and the frame is fixedly connected to the upper surface of the bottom support plate; and

[0029] The L-shaped plate fixedly connected to the upper surface of the bottom support plate, and the threaded rod is threadedly connected to the horizontal plate of the L-shaped plate.

[0030] Further, an end cap is fixedly connected to the upper end of the threaded rod, and the end cap is connected with a handle.

[0031] The utility model has at least the following advantages compared with the prior art:

[0032] By arranging the elastic component, during the core drilling process, by observing the compression degree of the elastic component, it is possible to identify whether the descending speed of the pressing component is appropriate. That is, when the elastic component is gradually compressed, it indicates that the descending speed of the pressing component is too fast at this time, and the drilling process of the sampling cylinder is slower. At this time, the descending speed of the pressing component should be reduced; on the contrary, when the elastic component is gradually extended, it indicates that the drilling process of the sampling cylinder is faster at this time, and the descending speed of the pressing component is slower. At this time, the descending speed of the pressing component can be increased. Through the above operations, the descending speed of the pressing component can be controlled, avoiding applying a large downward pressure to the sampling cylinder and avoiding the occurrence of the sticking drill phenomenon. Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is the overall structural schematic diagram of the pavement base measurement device for highway construction of the present utility model;

[0035] Figure 2 It is the cross-sectional view of the pavement base measurement device for highway construction of the present utility model;

[0036] Figure 3 For the present utility model Figure 2 The partial enlarged view of area A.

[0037] Reference numerals: 1, support frame; 2, driving member; 3, sampling cylinder; 4, pressing component; 5, elastic component; 11, bottom support plate; 12, through hole; 13, L-shaped plate; 21, driving motor; 41, threaded rod; 42, pressing block; 43, frame; 44, sliding rod; 45, mounting sleeve; 46, compression spring; 47, end cap; 48, handle; 51, sliding plate; 52, groove; 53, sliding protrusion; 54, sliding sleeve; 55, sliding groove; 56, first magnet; 57, second magnet. Detailed implementation manners

[0038] 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. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0039] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0040] Referring to Figures 1-3 , the present utility model provides a pavement base measurement device for highway construction, including a support frame 1, a driving member 2, a sampling cylinder 3, a pressing-down assembly 4, and an elastic assembly 5. Among them, the support frame 1 is used to fix and support the entire measurement device to ensure its stability and accuracy during the measurement process. Through holes 12 are arranged at the bottom of the support frame 1, and the sampling cylinder 3 selectively penetrates through the through holes 12 during coring; the driving member 2 and the sampling cylinder 3 are movably connected to the support frame 1 in the vertical direction, and the driving member 2 is used to drive the sampling cylinder 3 to rotate to realize the sampling process of the pavement base material; an elastic assembly 5 capable of stretching is provided at the lower end of the pressing-down assembly 4, and the pressing-down assembly 4 is connected to the driving member 2 through the elastic assembly 5, and the pressing-down assembly 4 is used to drive the sampling cylinder 3 to selectively penetrate through the through holes 12.

[0041] Preferably, the elastic assembly 5 includes a sliding plate 51, a sliding sleeve 54, and an elastic member. The sliding plate 51 is connected to the lower end of the pressing-down assembly 4, the sliding sleeve 54 is connected to the driving member 2, the sliding sleeve 54 is in a cylindrical structure with an upward opening, and the sliding plate 51 is slidably connected to the inner side wall of the sliding sleeve 54; the elastic member is arranged between the sliding plate 51 and the sliding sleeve 54 and is used to drive the sliding plate 51 and the sliding sleeve 54 to move away from each other.

[0042] Specifically, the elastic member includes a first magnet 56 and a second magnet 57. The first magnet 56 and the second magnet 57 are respectively connected to the sliding plate 51 and the bottom plate of the sliding sleeve 54 in a one-to-one correspondence. The opposite faces of the first magnet 56 and the second magnet 57 have the same magnetic poles, and the first magnet 56 and the second magnet 57 repel each other.

[0043] To prevent the sliding plate 51 from disengaging from the sliding groove 55, a sliding protrusion 53 is arranged on the outer side wall of the sliding plate 51, and a sliding groove 55 arranged in the vertical direction is arranged on the side wall of the sliding sleeve 54, and the two are slidably connected, ensuring the compactness of the structure and the smoothness of the movement.

[0044] The pressing assembly 4 includes a threaded rod 41 and a pressing block 42. The threaded rod 41 is arranged along the vertical direction and threadedly connected to the support frame 1. The pressing block 42 is fixedly connected to the lower end of the threaded rod 41. The upper surface of the sliding plate 51 is provided with a groove 52, and the pressing block 42 is movably connected to the groove 52.

[0045] The pressing assembly 4 also includes a frame 43, a sliding rod 44 and a compression spring 46. The frame 43 is fixedly connected in the support frame 1. The sliding rod 44 is slidably connected in the frame 43 along the vertical direction. The upper end is fixedly connected to the sliding sleeve 54, and the lower end is fixedly connected to the mounting sleeve 45 with the opening facing downward. The compression spring 46 is sleeved on the side of the sliding rod 44, and the two ends are respectively connected to the upper surface of the sliding sleeve 54 and the frame 43, and the force is smaller than the force between the first magnet 56 and the second magnet 57.

[0046] In order to ensure that the sliding rod 44 is slidably connected to the frame 43 in the vertical direction and prevent the sliding rod 44 from rotating on the frame 43, a sliding groove is provided on the outer wall of the sliding rod 44, and the sliding groove is provided in the vertical direction. The frame 43 is provided with a protrusion, which is slidably connected to the sliding groove.

[0047] The driving member 2 comprises a driving motor 21 . The driving motor 21 is fixedly connected in the mounting sleeve 45 . The output shaft of the driving motor 21 is drivingly connected to the sampling barrel 3 .

[0048] The support frame 1 includes a bottom support plate 11 and an L-shaped plate 13. The bottom support plate 11 is provided with a through hole 12. The upper surface of the bottom support plate 11 is fixedly connected with a frame 43 and the L-shaped plate 13. The threaded rod 41 is threadedly connected with the horizontal plate of the L-shaped plate 13. The two ends of the bottom support plate 11 protrude from the L-shaped plate 13 and the frame 43 in the horizontal direction, respectively, and the stability of the device can be improved by stepping on it during use.

[0049] An end cap 47 is fixedly connected to the upper end of the threaded rod 41 , and a handle 48 is connected to the end cap 47 . The handle 48 is provided to facilitate the screwing of the threaded rod 41 .

[0050] Working principle of this utility model:

[0051] During use, by turning on the drive motor 21, the sampling cylinder 3 is rotated. By turning the handle 48, the threaded rod 41 is driven to rotate, causing the pressing block 42 to move downward. The pressing block 42 drives the sliding plate 51 to move downward. The sliding plate 51 and the sliding sleeve 54 are compressed, and overcome the elastic force of the compression spring 46 to drive the sliding sleeve 54 and the sliding rod 44 to move downward, so that the sampling cylinder 3 penetrates through the through hole 12 to take a core sample of the road base. When the distance between the sliding plate 51 and the bottom support plate 11 of the sliding sleeve 54 gradually decreases, it indicates that the descending speed of the sampling cylinder 3 slows down at this time, and the rotation speed of the threaded rod 41 should be reduced at this time; on the contrary, when the distance between the sliding plate 51 and the bottom support plate 11 of the sliding sleeve 54 gradually increases, it indicates that the descending speed of the sampling cylinder 3 speeds up at this time, and the rotation speed of the threaded rod 41 should be increased at this time.

[0052] After the core sampling is completed, by turning the handle 48, the threaded rod 41 is driven to rotate, causing the pressing block 42 to move upward. The sampling cylinder 3, the drive motor 21, the sliding rod 44 and the sliding sleeve 54 gradually rise under the action of the compression spring 46, realizing the sampling process. After the sampling is completed, the core sample can be taken out from the sampling cylinder 3.

[0053] In the present utility model, by observing the distance between the sliding plate 51 and the bottom support plate of the microphone sleeve 11, it can be judged whether the rotation speed of the threaded rod 41 is appropriate, and corresponding adjustments can be made in a timely manner to avoid situations such as drill jamming.

[0054] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0055] The above-described embodiments are only descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model should fall within the protection scope determined by the claims of the present utility model.

Claims

1. A pavement base measurement device for highway construction, characterized in that, Comprising: A support frame (1) with through holes (12) arranged at the bottom; A driving member (2) and a sampling cylinder (3) movably connected to the support frame (1) in the vertical direction, the driving member (2) being used to drive the sampling cylinder (3) to rotate; and A pressing component (4), the lower end of the pressing component (4) being provided with a telescopic elastic component (5), the pressing component (4) being connected to the driving member (2) through the elastic component (5), the pressing component (4) being used to drive the sampling cylinder (3) to selectively penetrate through the through hole (12).

2. The road surface base layer measuring device for road construction according to claim 1, characterized in that, The elastic component (5) includes: A sliding plate (51) connected to one of the lower end of the pressing component (4) or the driving member (2); A sliding sleeve (54) connected to the other of the lower end of the pressing component (4) or the driving member (2), the opening of the sliding sleeve (54) facing upward, the sliding plate (51) being slidably connected to the inner side wall of the sliding sleeve (54); and An elastic member arranged between the sliding plate (51) and the sliding sleeve (54), the elastic member being used to drive the sliding plate (51) and the sliding sleeve (54) to move away from each other.

3. The pavement base layer measuring device for road construction according to claim 2, characterized in that The lower end of the pressing component (4) is fixedly connected to the sliding plate (51), and the driving member (2) is fixedly connected to the sliding sleeve (54); The elastic member includes a first magnet (56) and a second magnet (57) respectively connected to the bottom plates of the sliding plate (51) and the sliding sleeve (54), and the opposite surfaces of the first magnet (56) and the second magnet (57) have the same magnetic poles.

4. The pavement base measurement device for highway construction according to claim 3, characterized in that A sliding protrusion (53) is arranged on the outer side wall of the sliding plate (51), a sliding groove (55) arranged in the vertical direction is arranged on the side wall of the sliding sleeve (54), and the sliding protrusion (53) is slidably connected to the sliding groove (55).

5. The road surface base measurement device for road construction according to claim 4, characterized in that, The pressing component (4) includes: A threaded rod (41) arranged in the vertical direction, the threaded rod (41) being threadedly connected to the support frame (1); and A pressing block (42) fixedly connected to the lower end of the threaded rod (41), a groove (52) is arranged on the upper surface of the sliding plate (51), and the pressing block (42) is movably connected to the groove (52).

6. The road surface base measurement device for road construction according to claim 5, characterized in that, The pressing component (4) further includes: A frame (43) fixedly connected inside the support frame (1); A sliding rod (44) slidably connected in the frame (43) in the vertical direction, the upper end of the sliding rod (44) being fixedly connected to the sliding sleeve (54), the lower end of the sliding rod (44) being fixedly connected with an installation sleeve (45), the opening of the installation sleeve (45) facing downward; and A compression spring (46) sleeved on the periphery of the sliding rod (44), the two ends of the compression spring (46) being respectively connected to the sliding sleeve (54) and the upper surface of the frame (43), and the acting force of the compression spring (46) is less than the acting force between the first magnet (56) and the second magnet (57).

7. The road surface base measurement device for road construction according to claim 6, characterized in that, The driving member (2) includes a driving motor (21) fixedly connected inside the mounting sleeve (45), and an output shaft of the driving motor (21) is in transmission connection with the sampling cylinder (3).

8. The pavement base layer measuring device for highway construction according to claim 7, characterized in that, The support frame (1) includes: a bottom support plate (11) provided with the through hole (12), and the frame (43) is fixedly connected to the upper surface of the bottom support plate (11); and an L-shaped plate (13) fixedly connected to the upper surface of the bottom support plate (11), and the threaded rod (41) is threadedly connected to the horizontal plate of the L-shaped plate (13).

9. The road surface base measurement device for road construction according to claim 8, characterized in that, An end cap (47) is fixedly connected to the upper end of the threaded rod (41), and the end cap (47) is connected with a handle (48).

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