Roadbed compactness detection equipment

Abstract

The utility model relates to roadbed compactness detection equipment which comprises a fixing frame and a lifting frame, four height adjusting foot cups and two guide rods which are symmetrical left and right are installed on the fixing frame, two guide sleeves and a motor are installed on the lifting frame, each guide rod is sleeved with one guide sleeve, and the motor is connected with the four height adjusting foot cups. A motor shaft of the motor is connected with a rotating shaft, the bottom end of the rotating shaft is fixedly connected with a rotating disc, the bottom end of the rotating disc is fixedly connected with a spiral guide belt, the bottom end of the rotating disc is further provided with a splicing type ring cutter, the outer side wall of the splicing type ring cutter is provided with a spiral mounting groove, the spiral guide belt is inserted into the spiral mounting groove, and a through opening is formed in the middle of the fixing frame. The device has the beneficial effects that the spiral guide belt is used for guiding roadbed materials on the periphery of the splicing type ring cutter out of a drill hole, and resistance generated when the splicing type ring cutter drills the hole is reduced; the splicing type ring cutter formed by splicing the three blades is adopted, and the roadbed sample can be completely taken out from the splicing type ring cutter by splitting the splicing type ring cutter after the roadbed sample is taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of subgrade compaction degree detection, in particular to a subgrade compaction degree detection device. Background Art

[0002] The subgrade compaction degree refers to the ratio of the dry density after compaction of soil or other road-building materials to the standard maximum dry density. The subgrade compaction degree is one of the key indicators for the construction quality inspection of subgrade and pavement, which characterizes the density status after on-site compaction. The higher the compaction degree, the greater the density and the better the overall performance of the material.

[0003] When the drill bit drills into the subgrade, the frictional force between the outer wall of the drill bit and the surrounding foundation is large, resulting in a large resistance to the drill bit when it drills into the subgrade.

[0004] When taking a subgrade sample by drilling the subgrade with a drill bit, it is necessary to take out the subgrade sample from the drill bit by knocking, which causes the subgrade sample to loosen and affects the subsequent compaction degree detection. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above problems existing in the prior art and provide a subgrade compaction degree detection device.

[0006] To achieve the above technical purpose and reach the above technical effect, the utility model is realized through the following technical solutions:

[0007] A subgrade compaction degree detection device includes a fixed frame and a lifting frame. Four height-adjustable foot cups arranged in a rectangular array and two symmetrically arranged guide rods are installed on the fixed frame. Two symmetrically arranged guide sleeves and a motor are installed on the lifting frame. Each guide sleeve is sleeved on a guide rod. A rotating shaft with a turntable fixedly connected to the bottom end is connected to the motor shaft of the motor. A spiral guide belt is fixedly connected to the bottom end of the turntable. A spliced cutting ring knife is also installed at the bottom end of the turntable. A spiral installation groove is formed on the outer side wall of the spliced cutting ring knife. The spiral guide belt is inserted into the spiral installation groove. A through hole for the cutting ring knife to pass through is arranged in the middle of the fixed frame.

[0008] Wherein, a plurality of clamping pieces arranged in a circular array are flexibly connected to the top of the guide sleeve. A locking ring is screwed on the guide sleeve. The upper part of the inner side of the locking ring is a conical hole with a diameter gradually decreasing from top to bottom. When the guide sleeve rotates downward, the locking ring presses the clamping pieces to tightly hold the guide rod.

[0009] Among them, the spliced ​​circular cutting tool includes three blades with a fan-shaped cross-section. Multiple arc-shaped grooves are arranged on the outer side of each blade, and a fan-shaped mounting block is fixedly connected to the top of each blade; the mounting block is connected to the turntable with screws, so that the three blades are spliced ​​into a circular ring, and at the same time, the arc-shaped grooves on the outer sides of the three blades are connected to form a spiral mounting groove.

[0010] Among them, the bottom of the blade is ground into a blade with a gradually increasing thickness from bottom to top.

[0011] Among them, the cross-section of the spiral mounting groove and the cross-section of the spiral guiding belt are both "T"-shaped.

[0012] Among them, two handles are arranged on the lifting frame.

[0013] The beneficial effects of the present invention are: a spiral guiding belt is installed on the outer side of the spliced ​​circular cutting tool, and the subgrade material on the outer periphery of the spliced ​​circular cutting tool is exported from the drill hole by using the spiral guiding belt, so as to reduce the resistance when the spliced ​​circular cutting tool drills; a spliced ​​circular cutting tool composed of three blades is adopted. After taking the subgrade sample, the spliced ​​circular cutting tool is disassembled, and the subgrade sample can be taken out of the spliced ​​circular cutting tool completely. Description of the Drawings

[0014] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0015] Figure 1 is a schematic structural diagram of the subgrade compaction degree detection device in the present invention;

[0016] Figure 2 is a schematic structural diagram of the assembly of the guide sleeve and the locking ring in the present invention;

[0017] Figure 3 is a schematic structural diagram of the guide sleeve and the locking ring in the present invention;

[0018] Figure 4 is a schematic structural diagram of the combination of the rotating shaft, the spiral guiding belt and the spliced ​​circular cutting tool in the present invention;

[0019] Figure 5 is a schematic structural diagram of the spliced ​​circular cutting tool in the present invention;

[0020] Description of reference numerals in the figure: fixed frame 1, through hole 11, lifting frame 2, handle 21, height-adjustable foot cup 3, guide rod 4, guide sleeve 5, clip 51, locking ring 52, frustum-shaped hole 521, motor 6, rotating shaft 7, turntable 71, spiral guide belt 8, spliced ​​circular cutting knife 9, spiral installation groove 91, blade 92, arc groove 921, installation block 922, cutting edge 923. Detailed implementation manners

[0021] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0022] As Figures 1 to 5 shown, a subgrade compaction degree detection device includes a fixed frame 1 and a lifting frame 2. Four height-adjustable foot cups 3 arranged in a rectangular array and two symmetrically arranged guide rods 4 are installed on the fixed frame 1. Two symmetrically arranged guide sleeves 5 and a motor 6 are installed on the lifting frame 2. Each guide sleeve 5 is sleeved on a guide rod 4. The top of the guide sleeve 5 is flexibly connected with multiple clips 51 arranged in an annular array. A locking ring 52 is screwed on the guide sleeve 5. The upper part of the inner side of the locking ring 52 is a frustum-shaped hole 521 with a diameter gradually decreasing from top to bottom. When the guide sleeve 5 rotates downward, the locking ring 52 presses the clip 51 to tightly hold the guide rod 4.

[0023] A rotating shaft 7 with a turntable 71 fixedly connected to the bottom end is connected to the motor shaft of the motor 6. A spliced ​​circular cutting knife 9 is also installed at the bottom end of the turntable 71. A spiral installation groove 91 is formed on the outer side wall of the spliced ​​circular cutting knife 9. The spliced ​​circular cutting knife 9 includes three fan-shaped blades 92 with a sector-shaped cross-section. The bottom of the blade 92 is ground into a cutting edge 923 with a thickness gradually increasing from bottom to top. Multiple arc grooves 921 are arranged on the outer side of each blade 92. A sector-shaped installation block 922 is fixedly connected to the top end of each blade 92; the installation block 922 is connected to the turntable 71 with screws, so that the three blades 92 are spliced ​​into a circular ring, and at the same time, the arc grooves 921 on the outer sides of the three blades 92 are connected to form a spiral installation groove 91.

[0024] A spiral guide belt 8 is fixedly connected to the bottom end of the turntable 71, and the spiral guide belt 8 is inserted into the spiral installation groove 91.

[0025] The cross-section of the spiral installation groove 91 and the cross-section of the spiral guide belt 8 are both "T"-shaped.

[0026] Two handles 21 are arranged on the lifting frame 2 to facilitate the operator to lift and lower the lifting frame.

[0027] A through hole 11 for the circular cutting knife to pass through is arranged in the middle of the fixed frame 1.

[0028] Install a spiral guiding belt on the outside of the spliced circumferential cutter, and use the spiral guiding belt to export the subgrade material on the outer periphery of the spliced circumferential cutter from the drill hole, reducing the resistance when the spliced circumferential cutter drills the hole.

[0029] Adopt a spliced circumferential cutter composed of three blades. After taking the subgrade sample, by disassembling the spliced circumferential cutter, the subgrade sample can be completely taken out from the spliced circumferential cutter.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A roadbed compaction detection device, characterized in that: It includes a fixed frame and a lifting frame. Four height-adjusting foot cups arranged in a rectangular array and two left-right symmetrical guide rods are installed on the fixed frame. Two left-right symmetrical guide sleeves and a motor are installed on the lifting frame. Each of the guide sleeves is sleeved on a guide rod. A rotating shaft with a turntable fixedly connected to the bottom end is connected to the motor shaft of the motor. A spiral guide belt is fixedly connected to the bottom end of the turntable. A spliced ​​circular cutting knife is also installed at the bottom end of the turntable. A spiral mounting groove is opened on the outer side wall of the spliced ​​circular cutting knife. The spiral guide belt is inserted into the spiral mounting groove. A through opening for the circular cutting knife to pass through is arranged in the middle of the fixed frame.

2. The roadbed compaction detection device according to claim 1, characterized in that: The top of the guide sleeve is flexibly connected to multiple clips arranged in a circular array, and a locking ring is screwed on the guide sleeve. The upper inner part of the locking ring is a truncated cone-shaped hole with a diameter that gradually decreases from top to bottom. When the guide sleeve rotates downward, the locking ring presses the clips to hold the guide rod tightly.

3. The roadbed compaction detection device according to claim 1, characterized in that: The spliced ​​circular cutting knife includes three blades with fan-shaped cross-sections, each of which is provided with a plurality of arc-shaped grooves on the outside, and a fan-shaped mounting block is fixedly connected to the top of each blade; the mounting block is connected to the turntable with screws, so that the three blades are spliced ​​into a circular ring, and at the same time the arc-shaped grooves on the outside of the three blades are connected to form a spiral mounting groove.

4. The roadbed compaction detection device according to claim 3 is characterized in that: The bottom of the blade is ground into a blade with a thickness gradually increasing from bottom to top.

5. The roadbed compaction detection device according to claim 1, characterized in that: The cross-sections of the spiral installation groove and the spiral guide belt are both "T"-shaped.

6. The roadbed compaction detection device according to claim 1, characterized in that: The lifting frame is provided with two handles.

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