JP7793469B2 - Building sample collection device - Google Patents

Description

An embodiment of the present invention relates to a building sample collection device.

Generally, when repairs, renovations, or demolition are carried out on buildings, tunnels, bridges, and other structures, as well as ships, confirmation is made in advance of what building materials are used in the walls, floors, ceilings, etc., in order to prevent health damage to construction workers, for example, from asbestos.

Traditionally, when collecting samples from building materials, the area around the site is covered with vinyl sheets to prevent the sample from scattering, and the sample material is moistened using a spray bottle or similar method, after which the building materials are broken up using tools such as hammers, chisels, and utility knives to collect the samples.

However, these conventional methods of collecting samples from building materials pose problems, such as injuries and fatigue caused by the use of tools by construction workers, and reduced work efficiency due to having to carry individual equipment such as plastic sheets, spray bottles, and tools to each of multiple work sites where different building materials are used.

Sampling devices have been developed that can easily collect samples from building materials in existing buildings without scattering them (see, for example, Patent Document 1).

Asbestos removal and recovery devices that can safely remove and recover asbestos layers have been developed (see, for example, Patent Documents 2 and 3).

Japanese Patent Application Laid-Open No. 2021-096156 Japanese Patent Application Laid-Open No. 2021-025224 Japanese Patent Application Laid-Open No. 2008-200549

Conventional sampling devices or asbestos removal and recovery devices require power to suck in gas, inject water, and recover the waste, which not only makes the overall device configuration large, but also requires the power source to be carried separately from the device itself.

The problem that this invention aims to solve is to provide a building sample collection device that does not require power, is safe, can be easily carried to multiple sites, and can efficiently collect samples.

The structure sample collection device of the embodiment includes:
an inner cylindrical portion for drilling, the inner cylindrical portion including a drill-shaped drilling portion provided at one end of the cylindrical body in the longitudinal direction corresponding to the central axis of the cylindrical body, and configured to drill an object that comes into contact with the one end of the central axis by rotating the cylindrical body around the central axis; and a handle provided at the other end of the cylindrical body for rotating the cylindrical body around the central axis;
a first outer cylindrical portion having a first inner peripheral surface along the outer peripheral surface of the cylindrical body that can be inserted and removed at least in the range from the digging portion of the digging inner cylindrical portion to a part of the cylindrical body, and a specimen receiving tray provided in an annular shape along the first inner peripheral surface of one end of the digging inner cylindrical portion on the side corresponding to the digging portion;
a second outer cylindrical portion having a second inner peripheral surface along the outer peripheral surface of the first outer cylindrical portion, into which the first outer cylindrical portion can be inserted and removed, and including a leg portion for manually fixing one end of the inner cylindrical portion for excavation corresponding to the excavation portion in close contact with the object, and a manual water spray portion for wetting the object in the area surrounded by one end of the second inner peripheral surface by said fixing;
The excavated material of the target object excavated in accordance with the rotation of the excavation section is dropped into the specimen tray of the first outer cylindrical section and collected as a specimen.

1A and 1B are diagrams showing the overall configuration of an embodiment of a building sample collection device 1, in which (A) is a partially transparent view seen from the side, (B) is a partial cross-sectional view corresponding to (A), and (C) is a view taken along line A-A in (A) and (B). 1A and 1B are diagrams showing the external configuration of a building specimen collection device 1, in which FIG. 1A is a side view and FIG. 1B is a plan view. This figure shows the inner tube portion 10 for drilling and the first outer tube portion 20 for specimen collection provided in the structure specimen collection device 1, where (A) is a side view showing the external configuration of the inner tube portion 10 for drilling, and (B) is a longitudinal cross-sectional view showing the first outer tube portion 20 for specimen collection as viewed from the side. 10 is an enlarged partial cross-sectional view showing the configuration of a water injection section 35 provided at the bottom of the second outer cylinder section 30 for fixing the structure specimen collecting device 1. FIG. 1A and 1B are partial cross-sectional views showing the operation of the building sample collection device 1, in which FIG. 1A shows the operation associated with wetting Wp of the object T, and FIG. 1B shows the operation associated with excavating H of the object T. 1 is a diagram illustrating the procedure for collecting excavated material (specimen) Sa excavated from a building material by the building specimen collection device 1 using a sealed bag BA for testing.

The following describes an embodiment of the building sample collection device with reference to the drawings.

(Configuration of building sample collection device 1)
FIG. 1 shows the overall configuration of an embodiment of a building sample collection device 1, where FIG. 1(A) is a partially transparent view seen from the side, FIG. 1(B) is a partially cross-sectional view corresponding to FIG. 1(A), and FIG. 1(C) is a view taken along line A-A in FIG. 1(A) and FIG. 1(B).

Figure 2 shows the external configuration of the building sample collection device 1, with (A) being a side view and (B) being a plan view.

Figure 3 shows the inner excavation tube 10 and the first outer sample collection tube 20 provided in the structure sample collection device 1, with (A) being a side view showing the external configuration of the inner excavation tube 10, and (B) being a vertical cross-sectional view showing the first outer sample collection tube 20 as viewed from the side.

Here, the lower side of the illustrations in Figures 1(A) and 1(B), 2(A), and 3 is defined as the bottom of the building sample collection device 1, the upper side of the illustrations is defined as the top of the device 1, and the front of the illustrations is defined as the side of the device 1.

As shown in Figures 1(A) (B) and 2(A), the building sample collection device 1 is used by fixing the lower end of the device 1 to the surface of the object T, such as a building material, from which the sample is to be collected.

The structure specimen collection device 1 is cylindrical in shape and includes an inner excavation tube 10 located at the center of the cylinder, a first outer specimen collection tube 20 located around the outer periphery of the inner excavation tube 10, and a second outer specimen collection tube 30 located around the outer periphery of the first outer specimen collection tube 20 for fixing the device.

The structure sample collection device 1 is configured around an inner cylindrical section 10 for excavation, with a first outer cylindrical section 20 for sample collection and a second outer cylindrical section 30 for fixing the device combined so that they overlap sequentially outward along the side of the cylinder and are insertable and removable.

The overall size of the structure sample collection device 1, which combines the inner ductile section 10 for excavation, the first outer ductile section 20 for sample collection, and the second outer ductile section 30 for securing the device as shown in Figures 1 and 2, is approximately 200 mm wide x 500 mm high, making it easily portable for operators.

A minimum gap is set between the outer diameter of the drilling inner cylindrical portion 10 and the inner diameter of the first specimen collection outer cylindrical portion 20, and between the outer diameter of the first specimen collection outer cylindrical portion 20 and the inner diameter of the second device fixing outer cylindrical portion 30, allowing them to be inserted and removed (slid) from each other.

As shown in Figures 1(A) (B) and 3(A), the inner cylindrical drilling section 10 has a drilling section 11, for example, in the shape of an earth auger drill, that is provided at the lower end of the cylindrical body and faces downward in correspondence with the central axis of the cylindrical body.

The inner excavation cylinder 10 is also provided with a handle 12 at the upper end of the cylinder, extending radially from the center of the cylinder with a length corresponding to, for example, the outer diameter of the second outer cylinder 30 for securing the device. At the tip of the handle 12 is a cylindrical grip 13 that is rotatably supported around a pin that extends upward. The grip 13 is made of a material such as rubber that prevents the operator's hand from slipping when gripping and turning the handle 12.

In other words, by turning the handle 12, the entire drilling inner cylinder 10, which has the drilling section 11, rotates around the center of the cylinder's circle, and the tip of the drilling section 11 excavates the object T that it is in contact with in response to the downward force applied to the drilling inner cylinder 10 via the handle 12.

In addition, annular grooves 14a and 14b are formed along the outer periphery of the cylindrical body of the inner excavation tube 10 at two locations, one at about one-fifth of the height and the other at about three-fifths of the height from the bottom end, and annular O-rings 15a and 15b are fitted into the grooves 14a and 14b.

O-rings 15a and 15b are made of a material with a slippery surface, such as silicone rubber. When fitted into grooves 14a and 14b, the outer diameter of O-rings 15a and 15b is equal to or slightly larger than the inner diameter of first specimen collection outer cylindrical portion 20. O-rings 15a and 15b function to seal the gap between the outer surface of drilling inner cylindrical portion 10 and the inner surface (first inner surface) of first specimen collection outer cylindrical portion 20.

As shown in Figures 1(A) (B) and 3(B), the first specimen collection outer cylinder 20 has a height that exceeds at least the upper O-ring 15b from the lower end of the drilling inner cylinder 10, i.e., the tip of the drilling section 11. The lower end of the upper-stage outer cylinder 21 that forms its upper part and the upper end of the lower-stage outer cylinder 22 that forms its lower part are connected together by flat screws 23a, 23b that do not protrude from the outer surface.

A ring-shaped specimen receiving tray 24 is provided at the lower end of the lower outer cylindrical portion 22, with the inner diameter of the lower end narrowed by a fixed width and the narrowed inner periphery folded upward in an L shape. The specimen receiving tray 24 serves to collect, as specimens, the excavated material generated in the sealed space surrounded by the lower outer cylindrical portion 22 when the target object T is excavated by the excavation portion 11 of the excavation inner cylindrical portion 10.

The outer diameter of the excavation section 11 of the excavation inner cylinder section 10 is set to a dimension that is at least smaller than the outer diameter of the cylindrical body of the excavation inner cylinder section 10 and smaller than the inner diameter of the specimen receiving tray 24 provided in an annular shape at the lower end of the specimen collection first outer cylinder section 20.

On the other hand, an annular handle 25 is provided at the upper end of the upper outer cylinder portion 21, which is formed to widen the outer diameter of the upper end to a width corresponding to the outer diameter of the second outer cylinder portion 30 for fixing the device. The handle 25 is used to slide the first outer cylinder portion 20 for specimen collection in the direction of insertion and removal from the second outer cylinder portion 30 for fixing the device.

As shown in Figure 1(C), grease 20g is placed in the gap between the outer surface of the first specimen collection outer cylinder 20 and the inner surface (second inner surface) of the second device fixing outer cylinder 30 to allow them to slide smoothly relative to each other.

As shown in Figure 1, the second outer tube portion 30 for fixing the device has a water supply pipe 31 built in between its outer and inner surfaces, extending from the top end of the second outer tube portion 30 to the bottom. The water supply port (opening) of the water supply pipe 31 exposed at the top end of the second outer tube portion 30 for fixing the device is covered with an openable rubber cap 31a.

A water injection section 35 including a water injection piston section 32, a water injection reservoir section 33, and a nozzle 34 is connected to the lower end of the water supply pipe 31.

In this embodiment, the water injection section 35 has a water injection piston section 32 that protrudes from the outer peripheral surface of the second outer cylindrical section 30 for fixing the device, and the tip of the nozzle 34 that is exposed on the inner peripheral surface near the lower end of the second outer cylindrical section 30.

The water supply pipe 31 stores water to be supplied to the water injection piston 32 and water injection water reservoir 33 of the water injection unit 35, and supplies water in accordance with the movement of the water injection piston 32. The water injection unit 35 also sprays the water supplied to the water injection piston 32 and water injection water reservoir 33 from the nozzle 34 into the space surrounded by the lower end of the second outer tube 30 for fixing the device in accordance with the movement of the water injection piston 32, thereby wetting the object T.

The second outer tube portion 30 for fixing the device also has a contact base 36 at its lower end, made of rubber or other material of a certain thickness that is non-slip and adheres tightly to the surface of the object T, absorbing slight irregularities.

In the embodiment, the water supply pipe 31 and the water injection reservoir 33 and nozzle 34 of the water injection unit 35 are built into the space between the outer and inner surfaces of the second outer tube 30 for fixing the device. However, the nozzle 34 may be provided on the outside along the side of the second outer tube 30, as long as the tip of the nozzle 34 is exposed on the inner surface near the bottom end of the second outer tube 30. The detailed configuration of the water injection unit 35 will be described later.

The second outer tube portion 30 for fixing the device also has tripod portions 37a to 37c, which use suction lifters (suction cups), extending radially in three directions from the lower part of its outer periphery as shown in Figure 2(B).

The tripod units (suction lifters) 37a to 37c adhere to the surface of the object T by tilting the levers 38a to 38c on their heads in one direction, and as shown in Figures 1(A) and 1(B) and 2(A), they have the function of fixing the contact base 36 of the second outer cylinder unit 30 for fixing the device in a state of close contact with the surface of the object T. By flipping the levers 38a to 38c to the other direction, the suction of the tripod units (suction lifters) 37a to 37c to the object T is released, and the fixation is also released.

The structures of the excavation inner cylinder 10, the first sample collection outer cylinder 20, and the second device fixing outer cylinder 30 of the structure sample collection device 1 may be constructed using lightweight, strong materials such as hard plastic that can be easily carried by the operator, except for the excavation section 11, the suction sections of the tripod sections (suction lifters) 37a-37c, and sections made of materials such as rubber.

Figure 4 is an enlarged partial cross-sectional view showing the configuration of the water injection unit 35 provided at the bottom of the second outer tube portion 30 for fixing the structure sample collection device 1.

The water injection reservoir 33 is connected to the partition wall between the lower end of the water supply pipe 31 and the water injection reservoir 33 via a water supply valve 33a, and the nozzle 34 at the lower end of the water injection reservoir 33 is connected to the partition wall via a discharge valve 33b.

The water supply valve 33a is normally biased by a spring force (not shown) directed upward from the water injection reservoir 33 side to stop the water W from flowing down from the water supply pipe 31, and the discharge valve 33b is normally biased by a spring force (not shown) directed upward from the nozzle 34 side to stop the water W from flowing down from the water injection reservoir 33.

In addition, the piston 32 is connected sideways to the partition wall between the water injection reservoir 33 and the water injection piston 32 via a communication hole 32d with the cylinder.

A piston 32b is positioned inside the cylinder of the water injection piston portion 32, via a piston spring 32a, from the side of the communication hole 32d with the water injection reservoir portion 33. When the push-type injection button 32c, which protrudes from the tip of the cylinder, is pressed, the piston 32b slides against the spring force of the piston spring 32a toward the communication hole 32d with the water injection reservoir portion 33. When the injection button 32c is released from the pressure, the spring force of the piston spring 32a causes the piston 32b to reverse and slide toward the tip of the cylinder.

In other words, in the initial state where water W is stored in the water supply pipe 31 but has not yet been supplied to the water injection reservoir 33, when the injection button 32c of the water injection piston 32 is pressed and released, the piston 32b reverses its movement due to the spring force of the piston spring 32a, and air inside the water injection reservoir 33 is sucked in through the communication hole 32d with the water injection piston 32, opening the water supply valve 33a. The water W in the water supply pipe 31 is then supplied to the water injection reservoir 33 and the cylinder of the water injection piston 32 (see Figure 4(A)).

After that, as shown in Figure 4 (B), when the spray button 32c of the water spray piston portion 32 is pressed, the piston 32b moves toward the communication hole 32d with the water spray water storage portion 33, causing the water W in the cylinder to be pushed out through the communication hole 32d with the water spray water storage portion 33, opening the discharge valve 33b and causing the water W in the water spray water storage portion 33 to be sprayed Ws through the nozzle 34.

Next, by repeatedly opening and pressing the spray button 32c of the water spray piston portion 32, water W is repeatedly supplied from the water supply pipe 31 to the water spray reservoir portion 33 and the water spray piston portion 32, and water W is repeatedly sprayed Ws from the water spray piston portion 32 and the water spray reservoir portion 33 via the nozzle 34.

(Operation of the building sample collection device 1)
Figure 5 is a partial cross-sectional view showing the operation of the building sample collection device 1, where (A) shows the operation associated with wetting the object T, and (B) shows the operation associated with excavating the object T.

Figure 6 is a diagram illustrating the procedure for collecting excavated material (specimen) Sa excavated from building materials using the building specimen collection device 1 in a sealed bag BA for testing.

(1) As shown in Figures 1 and 2, the structure sample collection device 1 is fixed in place by operating the tripod parts (suction lifters) 37a to 37c of the second external cylinder part 30 for fixing the device, so that it is in close contact with the surface of the target object T, such as a building material.

(2) As shown in Figure 5(A), operate the handle 25 to pull the inner digging tube 10 and the first outer sample collection tube 20 upward in the direction U in which they will be removed from the second outer sample collection tube 30, thereby separating the lower end (sample receiving tray 24) of the first outer sample collection tube 20 from the object T and creating a space between them and the object T.

(3) By operating the spray button 32c of the water spray unit 35, water W supplied from the water supply pipe 31 is sprayed (Ws) through the nozzle 34 into the space above the object T, moistening the object T (Wp).

(4) As shown in Figure 5 (B), operate the handles 25 to push the inner digging tube 10 and the first outer specimen collection tube 20 downward D in the direction of insertion into the second outer specimen collection tube 30, until the lower end (specimen receptacle 24) of the first outer specimen collection tube 20 abuts (makes in intimate contact with) the surface of the moistened Wp object T.

(5) The grip 13 of the handle 12 of the excavation inner cylinder 10 is pressed downward D while continuously rotated R, causing the excavation part 11 to excavate the object T H, generating an excavated object Sa as a specimen in the sealed space surrounded by the lower outer cylinder 22 of the first specimen collection outer cylinder 20.

At this time, even the smallest pieces of the excavated material (specimen) Sa generated by the excavation H are moistened (Wp) and their mass increases. As a result, most of the excavated material is pulled upward by the rotation of the excavation section 11 and its centrifugal force, scattering radially from the excavation section 11 and falling along the inner surface (first inner surface) of the lower outer cylinder section 22 into the specimen receiving tray 24, where it is collected.

In addition, excavated material (specimen) Sa that does not reach the specimen receiving pan 24 is retained (collected) while adhering to the inner circumferential surface (first inner circumferential surface) of the excavation section 11 or the lower outer cylinder section 22.

In addition, the sealed space surrounded by the lower outer cylindrical portion 22 of the first outer cylindrical portion 20 for specimen collection has its lower end (specimen receptacle 24) abutting (fitting tightly) on the object T on the lower side, and two O-rings 15a, 15b sealing the gap with the outer surface of the inner cylindrical portion 10 for excavation on the upper side, maintaining this sealed state, reliably preventing excavated material (specimen) Sa scattered during excavation from leaking to the outside.

(6) When it is confirmed that a certain amount of excavated material (specimen) Sa has been excavated into the object T based on the amount of downward pressure D while rotating R, the first specimen collection outer cylinder 20 and the inner drilling cylinder 10 from which the excavated material (specimen) Sa has been collected or attached are slowly pulled upward from the second device fixing outer cylinder 30 while the inner drilling cylinder 10 remains assembled to the first specimen collection outer cylinder 20, and the lower end is slowly stored in a sealed testing bag BA with a zipper (registered trademark) J so that at least the lower outer cylinder 22 of the first specimen collection outer cylinder 20 is included, as shown in FIG. 6.

(7) Close the zipper J of the sealed bag BA to seal the lower end of the digging inner cylinder 10 and the first outer cylinder 20 for specimen collection within the bag BA, and shake off and collect the excavated material (specimen) Sa that has been collected and adhered to the specimen receiving tray 24, the inner surface (first inner surface) of the lower outer cylinder 22, and the digging section 11 into the sealed bag BA.

In addition, the lower end including the excavation section 11 of the excavation inner cylinder section 10 and the lower end including the lower outer cylinder section 22 of the first specimen collection outer cylinder section 20 may be stored separately in a sealed bag BA, and the excavated material (specimen) Sa from each may be collected by shaking it out into the sealed bag BA.

(8) After this, the inner cylindrical portion 10 for excavation and the first outer cylindrical portion 20 for specimen collection are reinserted into the second outer cylindrical portion 30 for fixing the device, and the tripod portions (suction lifters) 37a-37c are released from the target object T, thereby completing the collection of specimen Sa at one site using the structure specimen collection device 1.

(Summary of the embodiment)
According to the embodiment of the structure specimen collection device 1, the overall size of the device is approximately 200 mm wide x 500 mm high, making it easily portable for an operator. The second outer cylinder portion 30 for securing the device is secured to the object T from which the specimen is to be collected by manual tripods (suction lifters) 37a-37c, and the manual water spray unit 35 of the second outer cylinder portion 30 for securing the device is operated to wet the object T (Wp). By rotating R while pressing the handle 12 of the excavation inner cylinder portion 10 downward (D), the excavation unit 11 excavates (H) the object T, generating an excavated material (Sa) as a specimen in the enclosed space surrounded by the first outer cylinder portion 20 for specimen collection. The excavated material (Sa) generated by the excavation (H) scatters radially from the excavation unit 11 and falls along the inner circumferential surface (first inner circumferential surface) of the first outer cylinder portion 20 for specimen collection into the specimen receiving tray 24, where it is collected.

Then, the first specimen collection outer cylinder 20 and the excavation inner cylinder 10, to which the excavation material (specimen) Sa has been collected or is attached, are pulled out from the second device fixing outer cylinder 30, and their lower ends are stored and sealed in a sealed bag BA with a zipper J. The excavation material (specimen) Sa attached to the specimen receptacle 24, its inner surface, and the excavation section 11 of the first specimen collection outer cylinder 20 is shaken out and collected into the sealed bag BA.

Therefore, without using individual tools such as a hammer, chisel, utility knife, spray bottle, or vinyl sheet, and without exposing the excavation section 11, the subject T can be moistened (Wp) in the sealed space surrounded by the first specimen collection outer cylinder section 20, and the excavated material (specimen) Sa can be generated and collected by rotating the handle 12 (R).

This makes it possible to collect samples easily and safely without the need for power, without the risk of injury, fatigue, or reduced work efficiency that would otherwise result from carrying separate tools to work at multiple sites.

The first specimen collection outer cylinder 20 and the second fixture outer cylinder 30 of the building specimen collection device 1 may be constructed using transparent or translucent hard plastic, allowing the operator to visually check not only the state of the water W in the water supply pipe 31, but also the state of the water W sprayed Ws associated with the wetting Wp of the object T in the enclosed space surrounded by the lower outer cylinder 22 of the first specimen collection outer cylinder 20, and the state of the excavated material (specimen) Sa generated by the excavation H of the object T.

While several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments may be embodied in a variety of other forms, and various omissions, substitutions, and modifications may be made without departing from the spirit of the invention. These embodiments and their variations are within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as set forth in the claims.

1...building sample collection device, 10...inner cylinder for excavation, 11...excavation part, 12...handle, 13...grip, 15a, 15b...O-ring, 20...first outer cylinder for sample collection, 21...upper outer cylinder, 22...lower outer cylinder, 24...sample receiving tray, 25...handle, 30...second outer cylinder for fixing the device, 31...water supply pipe, 31a...rubber cap, 32...water injection piston part, 33...water injection storage part, 34...nozzle, 35...water injection part, 36...contact table, 37a-37c...tripod part (suction lifter), T...target object, W...water, Ws...injection, Wp...moistening, H...excavation, Sa...excavated material (sample), BA...sealed bag.

Claims (7)

an inner cylindrical portion for drilling, the inner cylindrical portion including a drill-shaped drilling portion provided at one end of the cylindrical body in the longitudinal direction corresponding to the central axis of the cylindrical body, and configured to drill an object that comes into contact with the one end of the central axis by rotating the cylindrical body around the central axis; and a handle provided at the other end of the cylindrical body for rotating the cylindrical body around the central axis;
a first outer cylindrical portion having a first inner peripheral surface along the outer peripheral surface of the cylindrical body that can be inserted and removed at least in the range from the digging portion of the digging inner cylindrical portion to a part of the cylindrical body, and a specimen receiving tray provided in an annular shape along the first inner peripheral surface of one end of the digging inner cylindrical portion on the side corresponding to the digging portion;
a second outer cylindrical portion having a second inner peripheral surface along the outer peripheral surface of the first outer cylindrical portion, into which the first outer cylindrical portion can be inserted and removed, and including a leg portion for manually fixing one end of the inner cylindrical portion for excavation corresponding to the excavation portion in close contact with the object, and a manual water spray portion for wetting the object in the area surrounded by one end of the second inner peripheral surface by said fixing;
The excavated material of the target object excavated in accordance with the rotation of the excavation section is dropped into the sample tray of the first outer cylinder section and collected as a sample. The structure sampling device described in claim 1, wherein the inner excavation cylinder portion is provided along the outer periphery of the cylindrical body and includes an O-ring that seals the gap between the inner cylinder portion and the first inner circumferential surface of the first outer cylinder portion. The structure sampling device described in claim 1 or 2, wherein the leg portion comprises a plurality of legs extending radially from the outer periphery of the second outer cylinder portion and is fixed by suction to the surface of the object using a suction lifter. The structure sample collection device described in claim 1 or claim 2, wherein the second outer cylinder portion has a contact base at one end that contacts the surface of the object. The structure sample collection device of claim 1 or 2, further comprising a handle provided at the other end of the first outer cylindrical portion and configured to widen the outer diameter of the first outer cylindrical portion. The structure sample collection device described in claim 1 or claim 2, wherein the water injection unit includes a water storage unit that stores water, a manual piston unit, and a nozzle that sprays the water stored in the water storage unit in response to movement of the piston unit, and the tip of the nozzle is exposed to the second inner surface on one end side of the second outer cylinder unit. The structure sample collection device of claim 1 or claim 2, wherein the overall size of the combined structure, obtained by inserting the inner cylindrical portion for excavation into the first outer cylindrical portion and inserting the first outer cylindrical portion into the second outer cylindrical portion, is configured to be small enough to be carried by an operator.