Test pit excavation device for detecting compactness through sand filling method

Abstract

The utility model discloses a test pit excavation device for detecting compactness by a sand filling method, and belongs to the technical field of civil engineering detection. The device comprises a rechargeable electric hand drill, a drill rod and a collecting barrel, the top end of the drill rod is in meshed connection with the rechargeable electric hand drill, and the drill rod penetrates through the collecting barrel from top to bottom; a graduated scale is arranged at the upper end of the drill rod; the collecting barrel is in a circular truncated cone shape with an upper opening and a lower opening, two sector-shaped covers are symmetrically arranged at the top of the collecting barrel, the drill rod penetrates through a through hole in the middle of the sector-shaped covers, and the diameter of the through hole is matched with the diameter of the drill rod. A handle is fixedly arranged on the outer edge of the middle of the collecting barrel, a pedal is fixedly arranged on the outer edge of the bottom of the collecting barrel, and a fence facing the inside of the barrel is arranged on the edge of a bottom opening of the collecting barrel. According to the utility model, the electric drill drives the drill rod to dig pits, so that the pit digging speed can be increased, the flatness of the side wall of the test pit can be ensured, and the filled materials dug out can be automatically collected by matching with the collecting barrel, and the accuracy of test results is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of civil engineering detection, and in particular relates to a test pit excavation device for detecting compaction by a sand filling method. Background Art

[0002] Compactness is one of the important indicators for quality control of pipeline backfilling and highway roadbed construction. When the compactness is determined by the sand filling method, a cylindrical test pit needs to be dug on site. The depth of the test pit is generally within 30 cm, usually 10 to 20 cm. The current pit digging method is still mainly manual, using tools such as hammers, chisels, and spoons to dig. The whole process is time-consuming and laborious. The side walls of the obtained test pit are not flat enough, and it is difficult to meet the requirements of the specifications. In addition, the digging process is prone to cause the loss of filling materials, which affects the final test results. In the prior art, there are also devices for automatic pit digging through mechanical components, such as the solution provided by the CN216194620U patent. The solution is provided with a gasoline engine, and the power provided by the gasoline engine is used to drive the drill rod to rotate and dig underground, realizing the mechanical excavation of the test pit, and the side walls of the excavated test pit are relatively flat. However, the device is large and heavy, inconvenient to transport, and the device only has the ability to dig pits, and does not have the ability to collect the filling materials taken out of the pits. Utility Model Content

[0003] In order to solve the problems in the prior art of using the sand filling method for compaction detection, such as high labor intensity and low efficiency in digging test pits, uneven test pit side walls, and large and heavy excavation equipment that is difficult to transport, the utility model proposes a test pit excavation device for compaction detection using the sand filling method.

[0004] A test pit excavation device for detecting compaction degree by sand filling method, characterized in that it includes a rechargeable hand drill, a drill rod and a collecting bucket, the top end of the drill rod is engaged with the rechargeable hand drill, and the drill rod passes through the collecting bucket from top to bottom; a scale is provided at the upper end of the drill rod, and a spiral blade is fixedly provided at the lower end of the drill rod; the collecting bucket is in the shape of a truncated cone with upper and lower openings, and the opening diameter is not less than the diameter of the spiral blade, and two fan-shaped covers are symmetrically provided on the top of the collecting bucket, and the fan-shaped covers are hinged to the collecting bucket by hinges, and the drill rod passes through a through hole in the middle of the fan-shaped covers, and the aperture of the through hole matches the diameter of the drill rod; a handle is fixedly provided at the outer edge of the middle part of the collecting bucket, a foot pedal is fixedly provided at the outer edge of the bottom of the collecting bucket, and a barrier facing the inside of the bucket is provided at the opening edge of the bottom of the collecting bucket.

[0005] The beneficial effects of the utility model are as follows: firstly, by providing a drill rod whose top end can be engaged with a rechargeable hand-held electric drill, the electric drill can drive the drill rod to rotate, thereby driving the spiral blade to rotate, realizing mechanical automatic pit digging, and greatly reducing the labor intensity of the test personnel; by providing a scale on the drill rod, the test personnel can understand the depth of the test pit at any time during the operation;

[0006] Secondly, the enclosure and fan-shaped cover at the bottom center of the collection barrel limit the drill rod and spiral blade, so that the drill rod is always in a vertical state, thus ensuring the verticality of the test pit. At the same time, the spiral blade will drive the filling material to rise. When the filling material rises to the height of the enclosure in the collection barrel, it will be scattered into the collection barrel cavity under the action of centrifugal force, so as to achieve timely recovery of the filling material and ensure the accuracy of the test results. When the test pit is excavated, if the excavated filling material needs to be weighed, just flip the collection barrel 180°. The truncated cone design of the collection barrel will cause the filling material in the collection barrel cavity to slide out from the fan-shaped cover, which is convenient for weighing. By setting a foot pedal, the weight of the tester himself will act on the collection barrel, which increases the stability of the pit digging process.

[0007] Finally, the rechargeable hand drill, drill rod, and collection bucket are three independent devices that can be disassembled for transportation. They are small in size and easy to transport. If one of the devices is damaged, only the damaged part needs to be replaced, and the remaining devices can continue to be used. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a front cross-sectional view of the utility model;

[0009] Figure 2 It is a top view of the collection bucket of the utility model;

[0010] Wherein: 1-rechargeable hand drill, 2-drill rod, 201-scale, 202-spiral blade, 3-collection bucket, 301-sector-shaped cover, 302-hinge, 303-handle, 304-pedal. DETAILED DESCRIPTION

[0011] Embodiment 1: A test pit excavation device for testing compaction by sand filling method, comprising a rechargeable hand drill 1, a drill rod 2 and a collection bucket 3, wherein the top end of the drill rod 2 is engaged with the rechargeable hand drill 1, and the drill rod 2 passes through the collection bucket 3 from top to bottom; wherein:

[0012] A scale 201 is provided at the upper end of the drill rod 2, so that the test personnel can know the depth of the test pit at any time during the operation. A spiral blade 202 is fixedly provided at the lower end of the drill rod 2. When the rechargeable hand drill 1 is working, it can drive the drill rod 2 to rotate, thereby driving the spiral blade 202 to rotate, realizing mechanical automatic pit digging, which greatly reduces the labor intensity of the test personnel;

[0013] The collecting barrel 3 is in the shape of a truncated cone with openings at the top and bottom. Two fan-shaped covers 301 are symmetrically arranged on the top of the collecting barrel 3. The fan-shaped covers 301 are hinged to the collecting barrel 3 by hinges. The drill rod 2 passes through the through hole in the middle of the fan-shaped covers 301, and the aperture of the through hole matches the diameter of the drill rod. A handle 303 is fixedly arranged at the outer edge of the middle part of the collecting barrel 3, a foot pedal 304 is fixedly arranged at the outer edge of the bottom of the collecting barrel 3, and a fence facing the inside of the barrel is arranged at the edge of the bottom opening of the collecting barrel 3. The fence and the fan-shaped cover 301 limit the drill rod 2 and the spiral blade 202, so that the drill rod 2 is always in a vertical state, thereby ensuring the verticality of the test pit. The spiral blade 202 will drive the filling material to rise. When the filling material rises to the height of the fence in the collecting barrel 3, it will be scattered into the cavity of the collecting barrel 3 under the action of centrifugal force, realizing the timely recovery of the filling material, thereby ensuring the accuracy of the test results. When the test pit is excavated and the excavated filling materials need to be weighed, the collecting bucket 3 only needs to be turned 180 degrees. The frustum-shaped design of the collecting bucket 3 will allow the filling materials in the collecting bucket 3 to slide out from the fan-shaped cover 301, making it easier to weigh. By providing the foot pedal 304, the weight of the tester will act on the collecting bucket 3, increasing the stability of the pit excavation process.

[0014] During the specific operation, the tester first moves the collection bucket 3 to the test site, steps on the foot pedal 304 with both feet, then opens the fan-shaped cover 301, passes the drill rod 2 through the collection bucket 3, closes the fan-shaped cover 301 to prevent the drill rod 2 from shaking left and right, then rotates the head of the rechargeable electric hand drill 1 and puts it on the top of the drill rod 2, rotates the head of the rechargeable electric hand drill 1 to fix the drill rod 2 in the rechargeable electric hand drill 1, and now the equipment is assembled.

[0015] After the equipment is assembled, the tester starts the rechargeable electric drill 1, and holds the rechargeable electric drill 1 with both hands and applies downward force until the scale 201 on the drill rod 2 drops to a predetermined height, then slowly lifts the drill rod 2 to a certain height and hovers for 3 to 5 seconds, during which the rechargeable electric drill 1 is still kept in operation, in order to make all the filling materials attached to the spiral blade 202 fall into the cavity of the collection bucket 3. At this point, the drilling work is completed.

[0016] After the drilling work is completed, the fan-shaped cover 301 is opened, the drill rod 2 is taken out, and then the collection bucket 3 is lifted by holding the handle 303 with both hands, and the collection bucket 3 is turned 180 degrees to pour out the filling material in the cavity and weigh it. Then, the subsequent work of the compaction test by the sand filling method is carried out.

Claims

1. A test pit excavation device for testing compaction by sand filling method, characterized in that It includes a rechargeable hand drill, a drill rod and a collecting bucket. The top end of the drill rod is engaged with the rechargeable hand drill, and the drill rod passes through the collecting bucket from top to bottom. A scale is provided at the upper end of the drill rod, and a spiral blade is fixedly provided at the lower end of the drill rod. The collecting bucket is in the shape of a truncated cone with upper and lower openings, and the opening diameter is not less than the diameter of the spiral blade. Two fan-shaped covers are symmetrically provided on the top of the collecting bucket, and the fan-shaped covers are hinged to the collecting bucket through hinges. The drill rod passes through a through hole in the middle of the fan-shaped covers, and the aperture of the through hole matches the diameter of the drill rod. A handle is fixedly provided at the outer edge of the middle part of the collecting bucket, a foot pedal is fixedly provided at the outer edge of the bottom of the collecting bucket, and a barrier facing the inside of the bucket is provided at the opening edge of the bottom of the collecting bucket.

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