Device for digging and collecting soil for compaction testing of road surfaces

Abstract

Device for digging and collecting soil for compaction testing of road surfaces, characterized in that it comprises: a frame for support, the frame being provided with a cover plate at an upper and lower end, the cover plate being provided with a through hole in the middle; a number of guide rails provided within the frame, the guide rails being connected at each end to the upper and lower cover plates; a frame hopper provided on a bottom side of the frame and enclosing the bottom side of the frame, the frame hopper cooperating with the lower cover plate to form a soil cavity for the road surface that can receive the soils removed by an earth digging device; an earth digging device, wherein the earth digging device is installed on a guide rail plate, wherein the guide rail plate cooperates and is connected to the plurality of guide rails.

Description

TECHNICAL FIELD

[0001] The present utility model relates to the technical field of the structure, in particular a device for digging and collecting soil for compaction tests of road surfaces. STATE OF THE ART

[0002] The pavement is a crucial component of the road, and compaction of the pavement is one of the most important checkpoints during project acceptance. The results of compaction tests directly impact the further progress of the project and the smooth acceptance of the entire project, and therefore play a vital role in road construction. Compaction testing for road construction projects can be performed using sand filling methods, water filling methods (water bag methods), ring gauge methods, nuclear measuring methods, and core drilling methods, among others. The most commonly used method is the trench sand filling method.

[0003] According to the Field Testing Procedures for Road Subgrades (JTG3450-2019), the trench depth of the test pit is determined by different fill grades, and the required excavation depth ranges from 15 cm to 40 cm. The trenching tools commonly used in field work are chisels, hammers, and shovels. The labor required for compaction tests is very high during peak earth filling periods. Conventional testing methods are labor-intensive and costly. CONTENTS OF THE PRESENT UTILITY MODEL

[0004] The purpose of the present utility model is to overcome the deficiencies in the prior art and to provide a device for digging and collecting soil for compaction testing of road surfaces, which serves to improve the efficiency of soil collection and digging of road surfaces, reduce the labor intensity of manual work and simplify the process of compaction testing of road surfaces.

[0005] To achieve the above purpose, a device for digging and collecting soil for compaction testing of road surfaces is developed, which device in particular comprises the following: a frame for support, the frame being provided at an upper and lower end with a cover plate, the cover plate being provided with a through hole in the middle; a number of guide rails provided within the frame, the guide rails being connected at each end to the upper and lower cover plates; a frame hopper provided at a lower side of the frame and enclosing the lower side of the frame, the frame hopper cooperating with the lower cover plate to form a soil material cavity for the road surface, which can receive the soil extracted by an earth digging device;an earth digging device, the earth digging device being installed on a guide rail plate, the guide rail plate being cooperating and connected with the plurality of guide rails;

[0006] Preferably, in the present utility model, the earth digging device comprises a rotary trenching bucket, a coupling device, and a motor, wherein the rotary trenching bucket has a spiral structure for deep digging of pavement pits and can take out soil samples by its reversal, wherein a number of suction through holes are formed on the rotary trenching bucket, which serves to suck up fine soil samples within the pit, and wherein the coupling device is connected to the motor and the rotary trenching bucket.

[0007] Preferably, in the present utility model, the two ends of the guide rail are respectively connected to the upper cover plate and the lower cover plate, wherein at least one of the guide rails is provided on one surface with a rack structure for cooperating with a gear of a guide rail motor, and wherein the guide rail motor drives the earth digging device to move up and down along the guide rail.

[0008] Preferably, in the present utility model, the guide rail motor is installed on the guide rail plate, and the guide rail plate moves up and down to realize a digging movement and a lifting movement of the earth digging device, wherein one end of the guide rail motor has a gear structure, the gear meshing with a rack on the guide rail, the guide rail motor rotates forward and backward so that the guide rail plate can be driven to move up and down along the guide rail.

[0009] Compared with the prior art, the present utility model has the following advantages: 1. This utility model uses the mechanical rotary drilling method for deep drilling of road pavement pits, with high drilling efficiency and convenient operation. 2. After the drilling process is completed, it can perform reverse earth extraction, and the method of earth extraction is convenient, which effectively reduces the labor intensity of manual earth extraction and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 a main view of the present utility model; Fig. 2 a left-hand view of the present utility model; Fig. 3 a plan view of the present utility model; Fig. 4 a three-dimensional representation of the present utility model; Fig. 5 a main view of the frame of the present utility model; Fig. 6 a plan view of the frame of the present utility model; Fig. 7 a main view of the frame funnel of the present utility model; Fig. 8 a plan view of the frame funnel of the present utility model frame; Fig. 9 is a main view of the earth digging device of the present utility model; Fig. 10 a left view of the earth digging device of the present utility model; Fig. 11 is a plan view of the earth digging device of the present utility model; Fig. 12 is a main view of the rotary trenching bucket of the present utility model; Fig. 13 a partial view of the rotary trenching bucket of the present utility model; Fig. 14 is a main view of the guide rail plate of the present utility model; Fig. 15 a left view of the guide rail plate of the present utility model; Fig. 16 is a plan view of the guide rail plate of the present utility model; Fig. 17 is a main view of the guide rail motor of the present utility model; Fig. 18 a left view of the guide rail motor of the present utility model; Fig. 19 is a plan view of the guide rail motor of the present utility model; Fig. 20 a main view of the cover plate of the present utility model. Reference list symbol: 1 frame; 2 frame funnels; 3 earth trench device; 3-1 rotary trench shovel; 3-2 coupling device; 3-3 engine; 4 guide rail; 5 guide rail plate; 6 guide rail motor; 7 cover plate; 8 Suction through hole. DETAILED DESCRIPTION

[0010] In order to make the purpose, principle and structure of the present utility model clearer and more explicit, the attached drawings and concrete embodiments are summarized below for further explanation.

[0011] Embodiment 1: A device for digging and collecting soil for compaction testing of road surfaces mainly consists of a frame 1, a frame hopper 2, an earth digging device 3, guide rails 4, a guide rail plate 5, a guide rail motor 6 and cover plates 7.

[0012] The frame 1 is welded with a square tube measuring 500 mm in length, 500 mm in width, and 1200 mm in height, which mainly serves to support the device. A cover plate 7 is welded to an upper and lower end of the frame 1 for storing the device and soil material. A φ200 mm through hole is provided in the center of the cover plate 7. The through hole is further provided with φ30 mm through holes at both ends. The φ200 mm through hole is used for inserting the earth digging device 3 to rotate and excavate the soil. The φ30 mm through holes are each connected and fixed to two guide rails 4.

[0013] The frame hopper 2 is made of glass material, encloses the underside of the frame 1 and, together with the cover plate 7, forms a cavity for receiving the earth material for the road surface taken from the earth trench device 3.

[0014] The earth digging device 3 is installed and fixed on the guide rail plate 5 and mainly consists of the rotary trenching bucket 3-1, the coupling device 3-2, and the motor 3-3. The diameter of the rotary trenching bucket 3-1 is φ20 mm and is used for deep digging of pavement pits. Soil samples can be retrieved by reversing it. Two φ8 mm suction through holes 8 are formed on the bottom. Due to the vacuum structure principle, it can automatically vacuum fine soil samples in pits and reduce the labor intensity of personnel. The coupling device 3-2 is a common coupling device on the market, mainly playing a role in connecting the motor 3-3 and the rotary trenching bucket 3-1. The motor 3-3 mainly plays a role in power transmission and provides the rotary trenching power for the rotary trenching bucket 3-1.

[0015] The guide rail 4 is a cylindrical rod and both ends of which respectively engage with the φ30mm through holes on the cover plate 7 arranged symmetrically on the left and right sides, wherein at least one of the guide rails 4 is provided on one surface with a rack structure for engaging with a gear of a guide rail motor 6, so that the earth digging device 3 can move up and down.

[0016] The guide rail plate 5 is provided with φ40mm and φ30mm through holes, the φ40mm through holes interacting with the earth digging device 3, and the φ30mm through holes interacting with the guide rails 4. In addition, the guide rail motor 6 is also installed on the guide rail plate 5, and the guide rail plate moves up and down to realize digging and lifting movements of the earth digging device. The guide rail plate 5 is provided with a rib plate 5-1 on the bottom to improve the support strength.

[0017] The guide rail motor 6 is installed on the guide rail plate 5, one end of which has a gear structure, the gear meshing with a rack on the guide rail to form a gear and rack structure, and the guide rail motor rotates forward and backward so that the guide rail plate can be driven to move up and down along the guide rail.

[0018] The cover plate 7 is welded and fixed to the upper and lower ends of the frame 1, respectively, and is simultaneously provided with through holes for the installation of the guide rails 4 and for the passage of the earth digging device, wherein the cover plate 7 on the underside of the frame 1 can further cooperate with the frame hopper 7 to form a cavity structure for receiving excavated earth materials.

[0019] Example of use: The method of using the present utility model.

[0020] Step 1: Setting up a device for digging and collecting soil for compaction testing of road surfaces on a road surface area to be dug and collected;

[0021] Step 2: Turn on the power supply and the control program of the device;

[0022] Step 3: Turn on the motor of the earth digging device 3-3, and the rotary trenching bucket 3-1 works;

[0023] Step 4: Turn on the guide rail motor and control the guide rail plate 5 to move smoothly downwards;

[0024] Step 5: The rotary trenching bucket 3-1 digs out soil after reaching the specified depth, reversing the motor of the earth digging device 3;

[0025] Step 6: Turning on the reverse guide rail motor 4 and controlling the soil digging device 3 to move upward, while the rotary trenching bucket 3-1 takes the soil sample and scatters it into the cavity formed by the frame hopper 2 and the cover plate 7;

[0026] Step 7: Reset the earth digging device 3 and turn off each motor, and the work of digging and soil picking at this point is finished;

[0027] Step 8: Repeat the above steps for the next locations.

[0028] The above, only the specific implementation of the present utility model, but the scope of protection of the present utility model is not limited to, any person skilled in the art familiar with the technical field of the present utility model within the technical scope of the disclosure of the present utility model, according to the technical program of the present utility model and the new idea of the present utility model added to the equivalent replacement or modification should be covered by the protection of the present utility model within the protection scope of the present utility model.

Claims

[1] Device for digging and collecting soil for compaction testing of road surfaces, characterized by that it includes: a frame for support, the frame being provided with a cover plate at an upper and lower end, the cover plate being provided with a through hole in the middle; a number of guide rails provided within the frame, the guide rails being connected at each end to the upper and lower cover plates; a frame hopper provided on a bottom side of the frame and enclosing the bottom side of the frame, the frame hopper cooperating with the lower cover plate to form a soil cavity for the road surface that can receive the soils removed by an earth digging device; an earth digging device, wherein the earth digging device is installed on a guide rail plate, wherein the guide rail plate cooperates and is connected to the plurality of guide rails. [2] Device for digging and collecting soil for compaction testing of road surfaces according to claim 1, characterized by that the earth digging device comprises a rotary trenching shovel, a coupling device and a motor, wherein the rotary trenching shovel has a spiral structure for deep digging of road surface pits and can take out soil samples by its reversal, wherein a number of suction through holes are formed on the rotary trenching shovel which serves to suck up fine soil samples within the pit, and wherein the coupling device is connected to the motor and the rotary trenching shovel. [3] Device for digging and collecting soil for compaction testing of road surfaces according to claim 1, characterized bythat the two ends of the guide rail are respectively connected to the upper cover plate and the lower cover plate, wherein at least one of the guide rails is provided on one surface with a rack structure which serves to cooperate with a gear of a guide rail motor, and wherein the guide rail motor drives the earth digging device to move up and down along the guide rail. [4] Device for digging and collecting soil for compaction testing of road surfaces according to claim 3, characterized bythat the guide rail motor is installed on the guide rail plate, and wherein the guide rail plate moves up and down to realize a digging movement and a lifting movement of the earth digging device, and wherein one end of the guide rail motor has a gear structure, the gear meshing with a rack on the guide rail, wherein the guide rail motor rotates forward and backward so that the guide rail plate can be driven to move up and down along the guide rail.

Images