CN215925923U - Roadbed compactness measuring device - Google Patents

Abstract

The embodiment of the application provides a road bed compactness survey device, including elevating system, sampling mechanism and survey mechanism. The lifting mechanism comprises a rack, a lifting platform and a first driving mechanism, the sampling mechanism comprises a sampling cylinder and a second driving mechanism, and the measuring mechanism comprises an extrusion part, a detection unit and a third driving mechanism. The lifting platform is arranged on the rack, and the first driving mechanism is connected to the lifting platform and the rack to enable the lifting platform to move up and down relative to the rack. The sampling cylinder is arranged on the lifting platform, and the second driving mechanism is connected to the sampling cylinder and the lifting platform to enable the sampling cylinder to rotate relative to the lifting platform to drill a sampling core. The third driving mechanism is connected with the extrusion component and the frame, so that the extrusion component can move up and down to extrude the sample core. The lower end of the extrusion component is provided with a detection unit for detecting the pressure of the extrusion component for extruding the sample core. The compaction degree detection device adopts the integrated design of the sampling mechanism and the measuring mechanism, improves the detection efficiency, simplifies the detection flow and ensures that the roadbed compaction degree measuring device is simple and convenient to operate.

Description

Roadbed compactness measuring device

Technical Field

The application relates to the technical field of road construction, in particular to a roadbed compactness measuring device.

Background

At present, the roadbed compactness is an important index for detecting the construction quality of a highway, the density condition after on-site compaction is represented, and the higher the compactness is, the higher the density is, and the better the overall performance of the material is. For roadbed soil and road base, the degree of compaction is the ratio of the dry density actually achieved at the construction site to the maximum dry density obtained by the experiment. In the existing methods for detecting the compaction degree of the highway subgrade, the most common device for measuring the compaction degree of the subgrade is a sand filling device, a destructive detection method is adopted by the device, a test pit needs to be dug and taken manually, and the measurement accuracy of the sand filling method is influenced by the shape of the test pit, the sand measuring square density and the sampled surface flatness. Therefore, the loose square density of the measured sand needs to be measured for many times in the sand filling method, the surface of the ground is subjected to flatness treatment, and the shape of a test pit dug by workers is standardized. Under the condition that the sand filling method is adopted to detect the roadbed compactness in a large area, the sampling process is separated from the measuring process, and the measuring efficiency is low.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a roadbed compactness survey device to it is low to improve traditional roadbed compactness survey device survey efficiency.

The embodiment of the application provides a roadbed compactness measuring device, which comprises a lifting mechanism, a measuring mechanism and a sampling mechanism;

the lifting mechanism comprises a rack, a lifting table and a first driving mechanism, the lifting table is movably arranged on the rack, the first driving mechanism is connected to the lifting table and the rack, and the first driving mechanism is used for driving the lifting table to move up and down relative to the rack;

the sampling mechanism comprises a sampling cylinder and a second driving mechanism, the sampling cylinder is rotatably arranged on the lifting platform, the second driving mechanism is connected to the sampling cylinder and the lifting platform, and the second driving mechanism is used for driving the sampling cylinder to rotate relative to the lifting platform so as to enable the sampling cylinder to drill a sampling core;

the measuring mechanism comprises an extrusion component, a detection unit and a third driving mechanism, wherein the third driving mechanism is connected with the extrusion component and the rack, the third driving mechanism is used for driving the extrusion component to move in the vertical direction so as to enable the extrusion component to extrude the sample core, the detection unit is arranged on the extrusion component, and the detection unit is used for detecting the pressure of the sample core extruded by the extrusion component.

Among the above-mentioned technical scheme, can drive reciprocating of sampler barrel through first actuating mechanism, can drive the relative elevating platform rotation of sampler barrel through second actuating mechanism to bore the sample core through the sampler barrel. The third driving mechanism drives the extrusion component to move downwards, the extrusion component can be enabled to extrude the sample core, the sample core is extruded to be broken by the pressurizing component, the detection unit detects the maximum pressure value of the sample core pressurized by the extrusion component at the moment, and the compactness of the sample core can be correspondingly obtained according to the maximum pressure. This compactness detection device both can be through the sample of sampling mechanism, can survey the appearance core that the mechanism taken out again through survey mechanism, and this kind of sampling mechanism has improved detection efficiency with survey the integrated design of mechanism, has simplified the detection flow, makes road bed compactness survey device easy operation convenient.

In some embodiments, the frame comprises a frame body, a moving platform and a fourth driving mechanism;

the frame body is provided with a plugging piece, and the plugging piece is used for plugging the lower end opening of the sampling tube;

the first driving mechanism is connected to the lifting platform and the moving platform and used for driving the lifting platform to move in the vertical direction relative to the moving platform;

the sampling tube is provided with a first position aligned with the blocking piece in the vertical direction, and the fourth driving mechanism is used for driving the moving platform to move in the left-right direction relative to the frame body so as to drive the sampling tube to move to the first position.

Among the above-mentioned technical scheme, move at the left and right sides direction for the support body through fourth actuating mechanism drive moving platform to change the position of sampler barrel, in order to move the sampler barrel to with the shutoff piece on the first position department of aligning in the upper and lower direction. At the moment, the lifting platform is driven by the first driving mechanism to move downwards along the vertical direction, so that the plugging piece can plug the lower end opening of the sampling cylinder, on one hand, the sample core can be prevented from being separated from the sampling cylinder when the extrusion part applies extrusion force to the sample core under the action of the third driving mechanism, on the other hand, the sample core can be prevented from splashing to hurt people after being broken in the sampling cylinder, and the safety of the measuring mechanism in the measuring process of the sample core is ensured.

In some embodiments, a through hole is formed in the frame body, the sampling tube has a second position aligned with the through hole in the vertical direction, the fourth driving mechanism is configured to drive the moving platform to switch between the first position and the second position, and the sampling tube is configured to obtain the sample core when being inserted into the through hole.

Among the above-mentioned technical scheme, can drive moving platform for the frame through fourth actuating mechanism and move in the left and right direction to drive the sampler barrel and switch between primary importance and second place, when the sampler barrel moves to the second place that aligns with the through-hole in the up-down direction, through the downward removal of first actuating mechanism drive sampler barrel in the up-down direction, then can make the sampler barrel wear to locate in the through-hole, so that the sampler barrel obtains the sample core. In the sampling process of the sampling tube, the sampling tube is positioned in the through hole, so that the through hole can play a role in guiding the movement of the sampling tube in the up-down direction, and the stability of the sampling tube in the up-down direction movement process is improved.

In some embodiments, the sampling mechanism further comprises a shaft sleeve connected to the sampling tube, the shaft sleeve having a central bore, the expression member being located within the central bore and forming a sliding fit with a bore wall of the central bore.

According to the technical scheme, the extrusion component is located in the central hole of the shaft sleeve, the extrusion component is in sliding fit with the hole wall of the central hole, the extrusion component can be always kept to move in the axis direction of the central hole of the shaft sleeve, and the stability of the extrusion component in the process of moving in the vertical direction is improved.

In some embodiments, the shaft sleeve is fixedly connected with the sampling tube, the shaft sleeve is connected to the second driving mechanism, and the second driving mechanism is used for driving the shaft sleeve to rotate, so that the shaft sleeve drives the sampling tube to rotate relative to the lifting platform.

Among the above-mentioned technical scheme, because axle sleeve and sampler barrel fixed connection, and the axle sleeve is connected in second actuating mechanism, the axle sleeve plays the effect of transmission power, will be about to transmit the power of second actuating mechanism output for the sampler barrel, makes sampler barrel circumferential direction, bores the sample core.

In some embodiments, the axial bottom end of the sleeve extends into the sampling tube.

Among the above-mentioned technical scheme, the axle sleeve bottom extends to in the sampler barrel, and the axle sleeve plays the limiting action to the appearance core that the sampler barrel bored the sample, has restricted appearance core along upper and lower direction rebound in the sampler barrel.

In some embodiments, the shaft sleeve is connected with the sampling tube through a connecting piece, one end of the connecting piece is fixedly connected with the outer circumferential wall of the shaft sleeve, and the other end of the connecting piece is fixedly connected with the inner circumferential wall of the sampling tube.

Among the above-mentioned technical scheme, the both ends through the connecting piece respectively with the periphery wall fixed connection of axle sleeve and the internal perisporium fixed connection of sampler barrel, then realize the fixed connection of axle sleeve and sampler barrel, simple structure easily realizes. Wherein, the connecting piece both had the effect of connecting axle sleeve and sampler barrel, can alleviate the impact when the sampler barrel rotates at a high speed and bores the core of taking a sample and absorb the vibration that the high-speed rotation of sampler barrel brought again.

In some embodiments, the sampling mechanism further comprises a clamping device connected to the lift table, the clamping device for clamping the sample core.

Among the above-mentioned technical scheme, sampling mechanism still includes clamping device, and clamping device connects in the elevating platform, and clamping device plays the effect of centre gripping appearance core. In the survey process, the accessible clamping device presss from both sides the sample core that the sampler barrel bored and was got tightly to fixed with the sample core, the survey mechanism of being convenient for surveys the sample core, guarantees the accuracy of survey mechanism survey.

In some embodiments, the gripping device comprises a plurality of gripping assemblies arranged at circumferentially spaced intervals on the lift table.

The centre gripping subassembly includes splint and regulating part, a part of splint is located in the sampling tube, splint pass through the regulating part connect in the elevating platform, the regulating part is used for adjusting splint are in the radial ascending position of sampling tube, so that the splint centre gripping appearance core.

In the above scheme, clamping device includes that the circumference interval arranges in a plurality of centre gripping subassemblies of elevating platform, and a plurality of centre gripping subassemblies can carry out the centre gripping to the appearance core from a plurality of positions to guarantee that whole clamping device stabilizes centre gripping appearance core. Because the centre gripping subassembly includes splint and regulating part, through the radial position of the adjustable splint of regulating part at the draft tube to the tight degree of clamp of regulating splint to the appearance core, with the purpose that reaches centre gripping appearance core, simple structure, convenient operation.

In some embodiments, the sampling tube includes a first cylinder rotatably connected to the elevating platform and a second cylinder detachably connected to a lower end of the first cylinder, the second cylinder being coaxially disposed with the first cylinder.

In the above scheme, second barrel detachably connects in the lower extreme of first barrel, and the second barrel plays the effect of boring the sample core, and second barrel detachably connects in the lower extreme of first barrel, is convenient for change the second barrel.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a front view of a roadbed compactedness measuring device provided in an embodiment of the present application;

FIG. 2 is a schematic structural view of the frame body shown in FIG. 1;

FIG. 3 is a schematic view showing the connection of the elevating mechanism, the sampling mechanism and the measuring mechanism shown in FIG. 1;

FIG. 4 is a cross-sectional view of the elevating mechanism, sampling mechanism and measuring mechanism shown in FIG. 3;

FIG. 5 is a schematic view of the connection between the lifting mechanism and the sampling mechanism shown in FIG. 4;

FIG. 6 is a cross-sectional view of the elevating mechanism and the sampling mechanism shown in FIG. 5;

fig. 7 is a schematic configuration diagram of the measurement unit 30 shown in fig. 1.

Icon: 100-roadbed compactness testing device; 10-a lifting mechanism; 11-a frame; 111-frame body; 1111-a support frame body; 1112-a handle; 1113-caster; 112-a fourth drive mechanism; 1121 — a first electric machine; 1122-lead screw; 113-a mobile platform; 114-a closure; 115-through holes; 12-a lifting platform; 121-a positioning tube; 122-a connecting frame; 13-a first drive mechanism; 20-a sampling mechanism; 21-a sampling tube; 211-a first cylinder; 212-a second cylinder; 22-a second drive mechanism; 221-a second motor; 222-a transmission assembly; 23-a clamping device; 231-an adjustment member; 232-clamping plate; 24-a shaft sleeve; 30-a measuring mechanism; 31-an extruded part; 32-a detection unit; 33-a third drive mechanism; 40-a controller; 50-a display; 60-a storage battery; 70-connecting piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is conventionally understood by those skilled in the art, is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Examples

Referring to fig. 1, fig. 1 is a front view of a roadbed compactibility measuring device according to an embodiment of the present application, and the roadbed compactibility measuring device 100 includes a lifting mechanism 10, a sampling mechanism 20, and a measuring mechanism 30.

The lifting mechanism 10 includes a frame 11, a lifting table 12 and a first driving mechanism 13, the lifting table 12 is movably disposed on the frame 11, the first driving mechanism 13 is connected to the lifting table 12 and the frame 11, and the first driving mechanism 13 is configured to drive the lifting table 12 to move in an up-and-down direction relative to the frame 11. The sampling mechanism 20 comprises a sampling cylinder 21 and a second driving mechanism 22, the sampling cylinder 21 is rotatably arranged on the lifting platform 12, the second driving mechanism 22 is connected to the sampling cylinder 21 and the lifting platform 12, and the second driving mechanism 22 is used for driving the sampling cylinder 21 to rotate relative to the lifting platform 12 so as to enable the sampling cylinder 21 to drill a sampling core. The measuring mechanism 30 includes a pressing member 31 (not shown in fig. 1), a detecting unit 32 (not shown in fig. 1), and a third driving mechanism 33, the third driving mechanism 33 is connected to the pressing member 31 and the frame 11, the third driving mechanism 33 is used for driving the pressing member 31 to move in the up-and-down direction so that the pressing member 31 presses the sample core, the detecting unit 32 is disposed on the pressing member 31, and the detecting unit 32 is used for detecting the pressure of the pressing member 31 pressing the sample core.

The up-and-down movement of the sampling cylinder 21 can be driven by the first driving mechanism 13, and the rotation of the sampling cylinder 21 relative to the lifting table 12 can be driven by the second driving mechanism 22 to drill a sampling core through the sampling cylinder 21. The third driving mechanism 33 drives the squeezing component 31 to move downwards, so that the squeezing component 31 can squeeze the sample core, the sample core is squeezed by the component to be pressurized until the sample core is crushed, the detection unit 32 detects the maximum pressure value of the sample core pressurized by the squeezing component 31, and the sample core compaction degree can be correspondingly obtained according to the maximum pressure. This compactness detection device both can be through the sample of sampling mechanism 20, can survey the appearance core that sampling mechanism 20 took out through survey mechanism 30 again, and this kind of sampling mechanism 20 and survey the integrated design of mechanism 30 have improved detection efficiency, have simplified the detection flow, make road bed compactness survey device 100 easy operation convenient.

In some embodiments, the roadbed compactedness measuring device further comprises a controller 40 and a display 50, wherein the detection unit 32 and the display 50 are electrically connected with the controller 40, the controller 40 is used for generating a compactedness signal according to the pressure detected by the detection unit 32, and the display 50 is used for displaying a compactedness value according to the compactedness signal. That is, after the detection unit 32 detects the maximum pressure applied to the sample core when the pressing part 31 crushes the sample core, the display 50 directly displays the compaction degree value of the sample core.

Illustratively, the controller 40 may be a PLC controller or a single chip microcomputer, and the detection unit 32 may be a pressure sensor for detecting pressure.

In practical operation, the lifting platform 12 and the sampling cylinder 21 can be driven by the first driving mechanism 13 to move downwards in the vertical direction, and the sampling cylinder 21 is driven by the second driving mechanism 22 to rotate relative to the lifting platform 12, so that the sampling cylinder 21 drills a sampling core. After the sampling cylinder 21 drills the sample core, the third driving mechanism 33 can drive the squeezing component 31 to move downwards along the vertical direction, so that the squeezing component 31 squeezes the sample core, and the detection unit 32 correspondingly detects the pressure of the squeezing component 31 squeezing the sample core in the process of squeezing the sample core by the squeezing component 31. As the pressing part 31 applies a gradually increasing pressure to the sample core, the sample core will eventually be crushed by the pressing part 31, and of course, the detection unit 32 can detect the maximum pressure applied to the sample core when the pressing part 31 crushes the sample core, and eventually display the degree of compaction corresponding to the maximum pressure on the display 50.

Optionally, the roadbed compactedness measuring device also comprises a storage battery 60, the storage battery 60 is electrically connected with the controller 40, and the storage battery 60 is used for providing electric energy for the controller 40.

In some embodiments, the frame 11 includes a frame body 111, a fourth driving mechanism 112 and a moving platform 113, and the frame body 111 is provided with a blocking member 114 for blocking the lower end opening of the sampling tube 21. The first driving mechanism 13 is connected to the lifting table 12 and the moving platform 113, and the first driving mechanism 13 is used for driving the lifting table 12 to move in the up-down direction relative to the moving platform 113. The sampling cylinder 21 has a first position aligned with the blocking member 114 in the vertical direction, and the fourth driving mechanism 112 is used for driving the moving platform 113 to move in the left-right direction relative to the frame body 111 so as to drive the sampling cylinder 21 to move to the first position.

In actual operation, the moving platform 113 can be driven by the fourth driving mechanism 112 to move in the left-right direction relative to the frame body 111 to change the position of the sampling tube 21, so as to move the sampling tube 21 to the first position aligned with the blocking member 114 in the up-down direction. At this time, the first driving mechanism 13 drives the lifting platform 12 to move downward in the vertical direction relative to the moving platform 113, so as to drive the sampling tube 21 to move downward in the vertical direction, and the plugging piece 114 can plug the lower end opening of the sampling tube 21, so that on one hand, the sample core can be prevented from being separated from the sampling tube 21 when the extrusion component 31 applies extrusion force to the sample core under the action of the third driving mechanism 33, on the other hand, the sample core can be prevented from splashing to hurt people after being crushed in the sampling tube 21, and the safety of the measuring mechanism 30 in the measuring process of the sample core can be ensured.

In some embodiments, the frame 111 is provided with a through hole 115, the sampling tube 21 has a second position aligned with the through hole 115 in the vertical direction, the fourth driving mechanism 112 is configured to drive the moving platform 113 to switch between the first position and the second position, and the sampling tube 21 is configured to obtain a sample core when being inserted into the through hole 115.

In practical operation, the fourth driving mechanism 112 can drive the moving platform 113 to move in the left-right direction relative to the frame 11 to drive the sampling tube 21 to switch between the first position and the second position, and when the sampling tube 21 moves to the second position aligned with the through hole 115 in the up-down direction, the first driving mechanism 13 drives the sampling tube 21 to move downward in the up-down direction, so that the sampling tube 21 can be inserted into the through hole 115 to drill the sampling core under the action of the second driving mechanism 22. In the sampling process of the sampling cylinder 21, the sampling cylinder 21 is positioned in the through hole 115, so that the through hole 115 can guide the movement of the sampling cylinder 21 in the up-down direction, and the stability of the sampling cylinder 21 in the up-down direction movement process is improved.

In some embodiments, referring to fig. 2, fig. 2 is a schematic structural view of the frame 111 shown in fig. 1, and the frame 111 includes a supporting frame 1111, a handle 1112, and a plurality of casters 1113. The handle 1112 is disposed at the top end of the supporting frame 1111, and the caster 1113 is disposed at the bottom end of the supporting frame 1111. The moving platform 113 (shown in fig. 1) is movably provided on the supporting frame 1111 in the left-right direction.

When the device is used, an operator can hold the handle 1112 to push the supporting frame 1111 to rotate through the caster 1113 to realize the walking of the frame body 111, so that the whole roadbed compactness measuring device 100 can be conveniently transferred to a target position, the rapid multipoint detection is convenient, and the detection efficiency is improved.

The grip 1112 is fitted with an anti-slip cover which serves to increase the friction between the grip and the user's hands and to prevent the roadbed compactness tester 100 from shaking strongly during sampling, which could lead to the device falling out of hand.

The through hole 115 and the plugging member 114 may be disposed on a bottom plate of the supporting frame 1111, the battery 60 may be mounted on a back plate of the supporting frame 1111, and the controller 40 and the display 50 may be mounted on the handle 1112.

For example, the supporting frame 1111 is provided with a guide rod for the moving platform 113 to move horizontally.

The caster 1113 is a universal wheel provided at the bottom of the supporting frame 1111, and the operator pushes the roadbed compactness measuring apparatus 100 in any direction by the handle 1112.

In some embodiments, the fourth driving mechanism 112 may include a first motor 1121 and a lead screw 1122, one end of an output shaft of the first motor 1121 is fixedly connected to the lead screw, the moving platform 113 is connected to the lead screw by a screw thread, and the first motor 1121 is operated to drive the lead screw to rotate, so that the moving platform moves in the left-right direction to drive the sampling cylinder 21 to switch between the first position and the second position.

The first electric motor 1121 may be electrically connected to the battery 60, and the first electric motor 1121 may be powered by the battery 60.

In some embodiments, referring to fig. 3, fig. 3 is a connection diagram of the lifting mechanism 10, the sampling mechanism 20 and the measuring mechanism 30 shown in fig. 1, the lifting platform 12 may include a connecting frame 122 and a positioning tube 121, the positioning tube 121 is fixed to the connecting frame 122, the connecting frame 122 is connected to the moving platform 113 through the first driving mechanism 13, and the sampling tube 21 is rotatably disposed in the positioning tube 121.

Illustratively, the first driving mechanism 13 includes two first electric push rods, the two push rods are arranged at intervals along the left-right direction, and the moving platform 113 moves in the left-right direction relative to the frame body 111.

The first electric push rod can be electrically connected with the battery 60, and the battery 60 can supply power to the first electric push rod.

It should be noted that in other embodiments, the first driving mechanism 13 may have other structures, such as a screw nut structure.

In some embodiments, referring to fig. 4, fig. 4 is a cross-sectional view of the lifting mechanism 10, the sampling mechanism 20 and the measuring mechanism 30 shown in fig. 3. The sampling tube 21 may include a first tube 211 and a second tube 212, the first tube 211 may be rotatably connected to the elevating table 12, the second tube 212 may be detachably connected to a lower end of the first tube 211, the second tube 212 may be coaxially disposed with the first tube 211, a portion of the clamping plate 232 may be located in the first tube 211, and an inner diameter of the first tube 211 may be greater than an inner diameter of the second tube 212.

The second cylinder 212 is detachably connected to the lower end of the first cylinder 211, and the second cylinder 212 is damaged in the drilling process and can be replaced in time, so that the working efficiency is improved.

Wherein, the second cylinder 212 is rotatably matched with the positioning tube 121 of the lifting table 12.

Illustratively, the second cylinder 212 is screwed to the first cylinder 211 to realize the detachable connection of the second cylinder 212 and the first cylinder 211, and the inner diameter of the first cylinder 211 is larger than that of the second cylinder 212.

In some embodiments, the sampling mechanism 20 further includes a shaft sleeve 24, the shaft sleeve 24 has a central hole, the pressing member 31 is located in the central hole and forms a sliding fit with a hole wall of the central hole, the pressing member 31 can be kept moving in the axial direction of the central hole of the shaft sleeve 24 all the time, and the stability of the pressing member 31 in the up-and-down direction movement process is improved.

In some embodiments, the shaft sleeve 24 is fixedly connected to the sampling tube 21, the shaft sleeve 24 is connected to the second driving mechanism 22, and the second driving mechanism 22 is configured to drive the shaft sleeve 24 to rotate, so that the shaft sleeve 24 drives the sampling tube 21 to rotate relative to the lifting platform 12.

Because the shaft sleeve 24 is fixedly connected with the sampling tube 21, and the shaft sleeve 24 is connected with the second driving mechanism 22, the shaft sleeve 24 plays a role of transmitting power, namely, the power output by the second driving mechanism 22 is transmitted to the sampling tube 21, so that the sampling tube 21 rotates in the circumferential direction, and a sampling core is drilled.

Wherein, the shaft sleeve 24 is rotatably engaged with the connecting frame 122 of the lifting platform 12 to improve the stability when the second driving mechanism 22 drives the shaft sleeve 24 to rotate.

Optionally, the axial bottom end of the shaft sleeve 24 extends into the sampling tube 21, and the shaft sleeve 24 limits the sample core drilled by the sampling tube 21, so as to limit the sample core from moving upwards in the sampling tube 21 in the up-and-down direction.

Illustratively, the shaft sleeve 24 is fixedly connected to the first cylinder 211, and the axial bottom end of the shaft sleeve 24 extends into the first cylinder 211 of the sampling cylinder 21.

Alternatively, the shaft sleeve 24 is connected with the sampling tube 21 through a connector 70, one end of the connector 70 is fixedly connected with the outer circumferential wall of the shaft sleeve 24, and the other end of the connector 70 is fixedly connected with the inner circumferential wall of the sampling tube 21.

Through the both ends of connecting piece 70 respectively with the periphery wall of axle sleeve 24 and the internal perisporium fixed connection of sampler barrel 21, then realize the fixed connection of axle sleeve 24 and sampler barrel 21, simple structure easily realizes. The connecting member 70 not only connects the shaft sleeve 24 and the sampling tube 21, but also can alleviate the impact of the sampling tube 21 during high-speed rotation and core drilling and absorb the vibration caused by the high-speed rotation of the sampling tube 21.

Wherein, both ends of the connector 70 are respectively connected to the outer circumferential wall of the bushing 24 and the inner circumferential wall of the first cylinder 211 of the sampling tube 21.

The connecting member 70 may be plural, and the plural connecting members 70 are circumferentially and uniformly arranged on the inner wall of the sampling tube 21 at intervals.

Illustratively, in fig. 4, there are 3 connectors 70.

In some embodiments, referring to fig. 5, fig. 5 is a schematic diagram illustrating a connection between the lifting mechanism 10 and the sampling mechanism 20 shown in fig. 4, the second driving mechanism 22 may include a second motor 221 and a transmission assembly 222, the second motor 221 is fixed to the lifting platform 12, an output shaft of the second motor 221 is in transmission connection with the shaft sleeve 24 through the transmission assembly 222, and when the second motor 221 operates, the transmission assembly 222 transmits power of the second motor 221 to the shaft sleeve 24 to drive the shaft sleeve 24 and the sampling cylinder 21 to rotate.

Illustratively, the drive assembly 222 is a belt drive assembly.

The second motor 221 may be electrically connected to the battery 60, and the second motor 221 may be supplied with power through the battery 60.

In some embodiments, referring to fig. 6, fig. 6 is a cross-sectional view of the lifting mechanism 10 and the sampling mechanism 20 shown in fig. 5, the sampling mechanism 20 further includes a holding device 23, the holding device 23 is connected to the lifting platform 12, and the holding device 23 is used for holding the sample core.

During the determination process, the sample core drilled by the sampling cylinder 21 can be clamped through the clamping device 23 to fix the sample core, so that the sample core is conveniently extruded by the extruding part 31, and the determination accuracy of the determination mechanism 30 is ensured.

In some embodiments, clamping device 23 includes a plurality of clamping assemblies circumferentially spaced apart on lift table 12. The holding assembly includes a clamp plate 232 and an adjusting member 231, a part of the clamp plate 232 is located in the sampling tube 21, the clamp plate 232 is connected to the lift table 12 through the adjusting member 231, and the adjusting member 231 is used for adjusting the position of the clamp plate 232 in the radial direction of the sampling tube 21 so that the clamp plate 232 holds the sample core.

A plurality of clamping assemblies can clamp the sample core from a plurality of orientations, thereby ensuring that the sample core is stably clamped by the whole clamping device 23. Because the centre gripping subassembly includes splint 232 and regulating part 231, through the radial position of the adjustable splint 232 of regulating part 231 in sampling tube 21 to adjust the splint 232 to the tight degree of clamp of appearance core, with the purpose that reaches centre gripping appearance core, simple structure, convenient operation. Illustratively, the clamping plate 232 is connected to the positioning tube 121 of the lifting table 12 via the adjustment member 231, and the clamping plate 232 partially extends into the first barrel 211 of the sampling barrel 21, so that the clamping plate 232 clamps the core in the first barrel 211.

For example, the adjusting member 231 may be a screw rod disposed along the radial direction of the positioning tube 121 and screwed to the positioning tube 121, and the screw rod is axially locked and circumferentially rotatably connected to the clamping plate 232, so as to ensure that the clamping plate 232 only moves along with the screw rod and does not rotate along with the screw rod when the screw rod is rotated, thereby improving the clamping stability.

In addition, in order to prevent the sample core from interfering with the clamping plate 232 during the movement from the second cylinder 212 into the first cylinder 211, the thickness of the clamping plate 232 may be set to be smaller than the difference between the inner diameter of the first cylinder 211 and the inner diameter of the second cylinder 212.

In some embodiments, referring to fig. 7, fig. 7 is a schematic structural diagram of the measuring mechanism 30 shown in fig. 1, and the detecting unit 32 may be disposed between the output end of the third driving mechanism 33 and the pressing member 31 in the vertical direction.

During the detection, the pressing force applied by the third driving mechanism 33 is transmitted to the individual pressing members 31 through the detection unit 32, so that the pressing members 31 are pressed against the sample cores, so that the detection unit 32 can detect the pressing force of the pressing members 31 against the sample cores.

Illustratively, the pressing member 31 may have a circular plate-like structure, and an outer circumferential wall of the pressing member 31 is matched with an inner circumferential wall of the sleeve 24.

The third driving mechanism 33 may be connected to the moving platform 113 of the frame 11, and the third driving mechanism 33 is, for example, a second electric push rod connected to the moving platform 113.

The second electric putter may be electrically connected to a battery 60, and the second electric putter may be supplied with electric power through the battery 60.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A roadbed compactedness measuring device is characterized by comprising:

the lifting mechanism comprises a rack, a lifting table and a first driving mechanism, the lifting table is movably arranged on the rack, the first driving mechanism is connected to the lifting table and the rack, and the first driving mechanism is used for driving the lifting table to move up and down relative to the rack;

the sampling mechanism comprises a sampling cylinder and a second driving mechanism, the sampling cylinder is rotatably arranged on the lifting platform, the second driving mechanism is connected to the sampling cylinder and the lifting platform, and the second driving mechanism is used for driving the sampling cylinder to rotate relative to the lifting platform so as to enable the sampling cylinder to drill a sampling core;

survey mechanism, including extrusion part, detecting element and third actuating mechanism, third actuating mechanism connect in the extrusion part with the frame, third actuating mechanism is used for the drive the extrusion part is followed the upper and lower direction removes, so that the extrusion part extrudees the appearance core, detecting element sets up the extrusion part, detecting element is used for detecting the extrusion part extrudees the pressure of appearance core.

2. The roadbed compactedness measuring apparatus according to claim 1, wherein the frame includes a frame body, a moving platform and a fourth driving mechanism;

the frame body is provided with a plugging piece, and the plugging piece is used for plugging the lower end opening of the sampling tube;

the first driving mechanism is connected to the lifting table and the moving platform and used for driving the lifting table to move along the up-down direction relative to the moving platform;

the sampling tube is provided with a first position aligned with the blocking piece in the vertical direction, and the fourth driving mechanism is used for driving the moving platform to move in the left-right direction relative to the frame body so as to drive the sampling tube to move to the first position.

3. The roadbed compactedness measuring apparatus as claimed in claim 2, wherein said frame body is provided with a through hole, said sampling tube has a second position aligned with said through hole in said up-down direction, said fourth driving mechanism is used for driving said moving platform to switch between said first position and said second position, said sampling tube is used for obtaining said sample core when passing through said through hole.

4. The roadbed compactedness measuring apparatus of claim 3, wherein the sampling mechanism further comprises a bushing, the bushing is connected to the sampling cylinder, the bushing has a central hole;

the extrusion component is positioned in the central hole and forms sliding fit with the hole wall of the central hole.

5. The roadbed compactedness measuring apparatus as claimed in claim 4, wherein said shaft sleeve is fixedly connected with said sampling cylinder, said shaft sleeve is connected to said second driving mechanism, said second driving mechanism is used to drive said shaft sleeve to rotate, so that said shaft sleeve drives said sampling cylinder to rotate relative to said lifting platform.

6. The roadbed compactedness measuring apparatus as claimed in claim 5, wherein the axial lower end of said sleeve extends into said sampling cylinder.

7. The roadbed compactedness measuring apparatus according to claim 5, characterized in that: the axle sleeve with the sampler barrel passes through the connecting piece to be connected, the one end of connecting piece with the periphery wall fixed connection of axle sleeve, the other end of connecting piece with the internal perisporium fixed connection of sampler barrel.

8. The roadbed compactedness measuring apparatus according to claim 1, wherein: the sampling mechanism further comprises a clamping device, the clamping device is connected to the lifting platform, and the clamping device is used for clamping the sample core.

9. The roadbed compaction apparatus of claim 8, wherein the clamping device comprises a plurality of clamping assemblies, and the plurality of clamping assemblies are circumferentially arranged at intervals on the lifting platform;

the centre gripping subassembly includes splint and regulating part, a part of splint is located in the sampling tube, splint pass through the regulating part connect in the elevating platform, the regulating part is used for adjusting splint are in the radial ascending position of sampling tube, so that the splint centre gripping appearance core.

10. The roadbed compactedness measuring apparatus as claimed in claim 1, wherein the sampling cylinder includes a first cylinder rotatably connected to the elevating platform and a second cylinder detachably connected to a lower end of the first cylinder, the second cylinder being coaxially disposed with the first cylinder.

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