Excavation and soil removal equipment and method

Abstract

This invention provides an excavation and soil removal device and method that reduce the burden on workers during soil removal while performing manual excavation work, thereby improving work efficiency. [Solution] The excavation and soil removal device 1 comprises a frame 10 including a support portion 12 installed on the ground and extending in a direction intersecting the ground, and an arm portion 13 supported at the tip of the support portion and extending parallel to the ground; a support device 20 including a winch mechanism 30 supported by the arm portion 13 and an operating rope 40 supported by the winch mechanism 30 and wound up; and an excavation and soil removal mechanism 50 including an auger mechanism 51 connected to one side of the operating rope 40 and an operating rod 52 whose tip is detachably attached to the base end of the auger mechanism 51 and can be operated by a worker on the ground.

Description

Technical Field

[0001] The present disclosure relates to an excavation and soil discharge device and an excavation and soil discharge method.

Background Art

[0002] In excavation work such as utility pole holes in urban areas, manual digging work using a manual auger is the mainstream due to the influence of buried obstacles. This is because there is a risk of damaging buried obstacles when performing excavation work with electricity or the like.

[0003] For example, Patent Document 1 proposes a device that can dig a relatively deep vertical hole manually with a light force using a screw-type auger and discharge soil while digging.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the screw-type auger in Patent Document 1 is heavy, so its operability is low. Also, when digging a hole with a large diameter and depth, the amount of soil discharge increases, so it is necessary to lift the device above the ground to discharge the soil, which places a burden on the operator.

[0006] An object of the present disclosure is to perform manual excavation work while reducing the burden on the operator during soil discharge and improving work efficiency.

Means for Solving the Problems

[0007] In order to solve the above problems, an excavation and soil discharge device according to one aspect of the present disclosure is A frame including a support part installed on the ground and extending in a direction intersecting the ground, and an arm supported at the tip of the support part and extending parallel to the ground, A support device including a winch mechanism supported by the arm, and an operating rope supported by the winch mechanism and wound up, An excavation and soil removal mechanism including an auger mechanism connected to one end of the operating rope, and an operating rod whose tip is detachably attached to the base end of the auger mechanism and which can be operated by a worker on the ground, It is equipped with. [Effects of the Invention]

[0008] According to this disclosure, it is possible to reduce the burden on workers during soil removal while performing manual excavation work, thereby improving work efficiency. [Brief explanation of the drawing]

[0009] [Figure 1] This diagram shows the configuration of the excavation and soil removal device 1 of this embodiment. [Figure 2] This diagram shows the configuration of the excavation and soil removal device 1 of this embodiment. [Figure 3] This diagram shows the configuration of the frame 10 in this embodiment. [Figure 4] This is a front view showing the configuration of the support device 20 of this embodiment. [Figure 5] This is a side view showing the configuration of the support device 20 of this embodiment. [Figure 6] This diagram shows the configuration of the excavation and soil removal mechanism 50 of this embodiment. [Figure 7] This flowchart shows the excavation and soil removal method using the excavation and soil removal device 1 according to this embodiment. [Figure 8] This figure shows a modified example of the excavation and soil removal device 1 of this embodiment. [Modes for carrying out the invention]

[0010] The embodiments of this disclosure will be described below with reference to the drawings. In all the drawings illustrating the embodiments, common components are denoted by the same reference numerals, and repeated explanations are omitted. The following embodiments are not intended to unduly limit the content of this disclosure as described in the claims. Not all components shown in the embodiments are necessarily essential components of this disclosure. Also, each drawing is a schematic diagram and is not necessarily a strict illustration.

[0011] Furthermore, in the following explanations, when describing similar elements without distinction, a reference code (or a common code among reference codes) may be used, and when describing similar elements with distinction, the element's identification number (or reference code) may be used.

[0012] <Overall Structure> The excavation and soil removal device according to this embodiment is a device that allows workers on the ground to manually excavate the ground for purposes such as utility pole holes, and to electrically discharge the excavated soil.

[0013] In this embodiment, "tip" refers to one end in the longitudinal direction, and "base" refers to the other end in the longitudinal direction. Furthermore, "parallel" refers to a state within ±20° of the parallel direction, and "perpendicular" refers to a state within ±20° of the vertical direction.

[0014] The configuration of the excavation and soil removal device 1 according to this embodiment will now be described. Figure 1 is a diagram showing the configuration of the excavation and soil removal device 1 according to this embodiment, and is a diagram showing the device during excavation work. Figure 2 is a diagram showing the configuration of the excavation and soil removal device 1 according to this embodiment, and is a diagram showing the device during soil removal work.

[0015] As shown in Figures 1 and 2, the excavation and soil removal device 1 comprises a frame 10, a support device 20, and an excavation and soil removal mechanism 50. The frame 10 is installed on the ground near the hole to be excavated and supports the support device 20. The support device 20 supports the auger mechanism 51 of the excavation and soil removal mechanism 50 by an operating rope 40. The excavation and soil removal mechanism 50 includes the auger mechanism 51 and an operating rod 52 that is detachable from the auger mechanism 51.

[0016] As shown in FIG. 1, in the excavation operation, the auger mechanism 51 of the excavation and soil discharge mechanism 50 and the operating rod 52 are connected. When an operator manually operates the operating rod 52 from the ground and rotates it clockwise, the auger mechanism 51 rotates to excavate the ground in the ground. As a result, excavated soil is generated in the hole.

[0017] As shown in FIG. 2, in the soil discharge operation, the operating rod 52 is removed from the auger mechanism 51 of the excavation and soil discharge mechanism 50. When an operator operates the lever 33c of the support device 20, the operating rope 40 is electrically wound up. As a result, the auger mechanism 51 supported by the operating rope 40 and the excavated soil accumulated on the auger mechanism 51 are lifted to the ground and discharged. At this time, by separating the operating rod 52 from the auger mechanism 51 and discharging the soil, the operability during lifting can be improved, and the load on each part due to the weight of the operating rod 52 can be reduced.

[0018] <Configuration of the pedestal 10> The configuration of the pedestal 10 according to this embodiment will be described. FIG. 3 is a diagram showing the configuration of the pedestal 10 of this embodiment.

[0019] As shown in FIG. 3, the pedestal 10 includes legs 11, a support portion 12, an arm portion 13, a first reinforcement portion 14, and a second reinforcement portion 15.

[0020] The legs 11 are installed on the ground to make the pedestal 10 stand independently. The legs 11 include a pair of first portions that extend parallel to the ground and parallel to each other, and a second portion that connects the ends of the pair of first portions. The pair of first portions intersect the second portion perpendicularly. That is, a U-shaped is formed by the pair of first portions and the second portion. A hole is formed in the ground at the center of this U-shaped. The first portion and the second portion may be connected by welding or fixed with bolts or the like. The legs 11 are, for example, square pipes formed of metal members.

[0021] The support portion 12 has its base end connected to the upper surface of the longitudinal center of the second portion of the leg portion 11 and extends perpendicularly to the ground. The support portion 12 supports the arm portion 13 at its tip. The support portion 12 has sufficient strength to support the weight of the arm portion 13, the support device 20, the auger mechanism 51, and the excavated soil, etc. The support portion 12 is, for example, a pipe made of a metal member.

[0022] The base end of the arm portion 13 is connected to the tip of the support portion 12. The arm portion 13 extends parallel to the ground and passes above the central part of the U-shape of the leg portion 11. The arm portion 13 supports the support device 20 so that it can move in the longitudinal direction. The arm portion 13 has sufficient strength to support the weight of the support device 20, the auger mechanism 51, and excavated soil, etc. The arm portion 13 is, for example, a square pipe made of a metal member.

[0023] The first reinforcing portion 14 is provided to connect the vicinity of the tip of the support portion 12 and the vicinity of the base end of the arm portion 13. The first reinforcing portion 14 extends, for example, at a 45° angle to the longitudinal direction of the support portion 12 and the arm portion 13, respectively. The first reinforcing portion 14 reinforces the arm portion 13 so that it can maintain perpendicularity to the support portion 12. The first reinforcing portion 14 is formed, for example, from a metal member.

[0024] The second reinforcing portion 15 is a pair of strip-shaped members that connect each of the ends of the second portion of the leg portion 11 to the longitudinal center of the support portion 12. The second reinforcing portion 15 extends toward the support portion 12 at a 60° angle to the longitudinal direction of the second portion of the leg portion 11. The second reinforcing portion 15 reinforces the support portion 12 so that it can maintain perpendicularity to the leg portion 11 (ground).

[0025] <Configuration of the support device 20> The configuration of the support device 20 according to this embodiment will now be described. Figure 4 is a front view showing the configuration of the support device 20 according to this embodiment. Figure 5 is a side view showing the configuration of the support device 20 according to this embodiment.

[0026] As shown in Figures 4 and 5, the support device 20 comprises a winch mechanism support section 21, a winch mechanism 30, and an operating rope 40. The support device 20 is a device that electrically lifts the auger mechanism 51 during soil removal work, and automatically stops after lifting it to a desired position.

[0027] The winch mechanism support section 21 is supported by the arm section 13. The winch mechanism support section 21 is movable in the longitudinal direction of the arm section 13. The winch mechanism support section 21 supports the winch mechanism 30.

[0028] The winch mechanism 30 comprises a drum support section 31, a drum 32, a switch mechanism 33, and a drive unit 34.

[0029] The drum support portion 31 is held by the holding portion 33a of the switch mechanism 33. The drum support portion 31 includes a plurality of rotating shafts and gears and rotatably supports the drum 32. The drum support portion 31 is formed of, for example, a metal member.

[0030] The drum 32 is rotatably supported about the rotation axis of the drum support 31. The drum 32 is made of a cylindrical metal member. The drum 32 winds up the operating rope 40 by rotating about the rotation axis. In this embodiment, the operating rope 40 is wound around the drum 32 for two turns (two rotations), but it is not limited to this, and may be wound for three or more turns.

[0031] The switch mechanism 33 includes a holding part 33a, a release mechanism 33b, a lever 33c, and a lever holding plate 33d. The switch mechanism 33 controls the drive of the drive unit 34 to automatically stop as each part of the switch mechanism 33 operates in response to the winding of the operating rope 40 by the drum 32.

[0032] The holding portion 33a is supported by the winch mechanism support portion 21 so as to be movable longitudinally on the arm portion 13. The holding portion 33a holds the drum support portion 31. The holding portion 33a holds the release mechanism 33b on both sides of the drum support portion 31. In addition, the holding portion 33a fixes and rotatably holds the base ends of the lever 33c and the lever holding plate 33d on one side of the drum support portion 31 (one side in the axial direction of the drum 32). Furthermore, the holding portion 33a holds the drive device 34 in a position in which the drum 32 can be driven. The holding portion 33a is formed of, for example, a metal member.

[0033] The release mechanism 33b is a metal rod-shaped member having a U-shape when viewed from the front in Figure 4. The release mechanism 33b is held by the holding part 33a and is provided to cover both sides and the bottom of the drum support part 31. That is, the release mechanism 33b includes a pair of first parts extending downward and a second part connecting the lower ends of the first parts. The first parts of the release mechanism 33b are held by the holding part 33a so as to be movable up and down. The second part is provided with a cylindrical pipe 33b-2 extending in the vertical direction, and the operating rope 40 is inserted through the pipe 33b-2. The pipe 33b-2 guides the operating rope 40 to be wound up on the drum 32.

[0034] Furthermore, as seen from the side in Figure 5, a projection 33b-1 is provided on one side of the pair of first parts of the release mechanism 33b, extending perpendicularly to the longitudinal direction of the first part. The projection 33b-1 pushes up the lever holding plate 33d from below its tip when the release mechanism 33b is lifted upward, causing the lever holding plate 33d to rotate.

[0035] The lever 33c is a metal rod-shaped member. The base end of the lever 33c is rotatably held by the holding part 33a in the longitudinal direction. By operating (rotating) the tip of the lever 33c in the longitudinal direction, the switch of the drive device 34 is pressed (turned on), and the drive device 34 is driven. Also, as seen from the side in Figure 5, the lever 33c is provided with a projection 33c-1 that extends perpendicular to the longitudinal direction. This projection 33c-1 fits into the opening 33d-1 of the lever holding plate 33d, fixing the angle of the lever 33c and maintaining the switch of the drive device 34 in the ON position.

[0036] The lever retaining plate 33d is a rectangular metal plate. The base end of the lever retaining plate 33d in the longitudinal direction is rotatably held by the retaining part 33a. The lever retaining plate 33d rotates when it is pushed in from below the longitudinal tip by the projection 33b-1 of the release mechanism 33b. The lever retaining plate 33d has an opening 33d-1 below the center in the longitudinal direction. By fitting the projection 33c-1 of the lever 33c into the opening 33d-1 of the lever retaining plate 33d, the angle of the lever 33c can be fixed and the switch of the drive device 34 can be kept on.

[0037] The drive device 34 is a device that applies rotational force to the rotating shaft of the drum support 31 and the drum 32. By applying rotational force to the rotating shaft of the drum support 31, the drive device 34 rotates the drum 32 via gears from the rotating shaft. The drive device 34 is, for example, an electric screwdriver. The drive device 34 is held in the holding part 33a in a position where it is possible to apply rotational force to the rotating shaft of the drum support 31 and where it can be switched on by the lever 33c.

[0038] The operating rope 40 is wound onto and supported by a drum 32. One end of the operating rope 40 via the drum 32 is inserted into the pipe 33b-2 of the release mechanism 33b and connected to the auger mechanism 51. The other end of the operating rope 40 is operated by an operator. The operating rope 40 includes a release mechanism operating section 41 at any position between the pipe 33b-2 of the release mechanism 33b and the auger mechanism 51. The diameter of the release mechanism operating section 41 is larger than the diameter of the pipe 33b-2 of the release mechanism 33b. Therefore, when the operating rope 40 is wound onto the drum 32 and the release mechanism operating section 41 reaches the position of the pipe 33b-2, the release mechanism operating section 41 lifts the release mechanism 33b via the pipe 33b-2. The release mechanism operating section 41 includes, for example, a washer and a hose clamp that secures the washer to the operating rope 40.

[0039] The support device 20 is driven when lifting the auger mechanism 51 during soil removal work. First, the lever 33c is operated by the worker, and the switch on the drive device 34 is pressed, turning on the drive device 34. At this time, the protrusion 33c-1 of the lever 33c fits into the opening 33d-1 of the lever holding plate 33d, and the lever holding plate 33d rotates downward due to its own weight, fixing the lever 33c at a predetermined angle. This keeps the switch on the drive device 34 on, and the drive device 34 continues to drive. Driven by the drive device 34, the drum 32 rotates, the operating rope 40 is wound up, and the auger mechanism 51 is lifted.

[0040] When the auger mechanism 51 is lifted to any desired position on the ground, the release mechanism operating unit 41 reaches the position of the pipe 33b-2 of the release mechanism 33b and lifts the release mechanism 33b via the pipe 33b-2. When the release mechanism 33b is lifted, the lever holding plate 33d rotates upward due to the protrusion 33b-1 of the release mechanism 33b. As a result, the protrusion 33c-1 of the lever 33c disengages from the opening 33d-1 of the lever holding plate 33d, and the lever 33c returns to its original position by its own weight, and the switch of the drive unit 34 is no longer pressed. Then the switch of the drive unit 34 is turned off, the rotation of the drum 32 stops automatically, and the lifting of the auger mechanism 51 is completed.

[0041] <Configuration of the excavation and soil removal mechanism 50> The configuration of the excavation and soil removal mechanism 50 according to this embodiment will now be described. Figure 6 is a diagram showing the configuration of the excavation and soil removal mechanism 50 according to this embodiment.

[0042] The excavation and soil removal mechanism 50 includes an auger mechanism 51 and an operating rod 52. The excavation and soil removal mechanism 50 is a mechanism that excavates the ground into the earth and discharges the excavated soil.

[0043] The auger mechanism 51 includes a main body 51a, a head portion 51b, a screw portion 51c, a convex portion 51d, a projection portion 51e, a guide portion 51f, and an operating rope connection portion 51g.

[0044] The main body 51a is a metal rod-shaped member. A head portion 51b is provided at the tip of the main body 51a. A protrusion 51d is provided at the base end of the main body 51a, and the operating rod 52 can be attached to and detached from it.

[0045] The screw section 51c is provided on the base end side of the head section 51b of the main body 51a. The screw section 51c is composed of spiral blades and is provided 360° in the circumferential direction. The screw section 51c and the head section 51b excavate the ground into the earth. In addition, the excavated soil accumulates on the upper surface of the screw section 51c, so the excavated soil can be discharged by lifting the auger mechanism 51 to the ground.

[0046] The protrusion 51d is provided at the base end of the main body 51a. The cross-sectional shape of the protrusion 51d is, for example, circular. The diameter of the protrusion 51d is smaller than the inner diameter of the recess 52c of the operating part 51, and the protrusion 51d is fitted so that it fits inside the recess 52c. The protrusion 51d is formed of, for example, a metal member. In Figure 6, the protrusion 51d is provided integrally with the main body 51a at the base end of the main body 51a, but it may also be attached as a separate part.

[0047] The projection 51e is provided on the side surface of the convex portion 51d. The width of the projection 51e is smaller than the width of the opening 52d of the recess 52c. Therefore, when the convex portion 51d is fitted into the recess 52c, the projection 51e can move along the opening 52d.

[0048] The guide portion 51f is provided at the base end of the main body 51a (the base end of the protrusion 51d). The guide portion 51f has a tapered shape, with its diameter decreasing towards the base end of the protrusion 51d. The tapered shape may be, for example, a cone, a triangular pyramid, or a square pyramid. Because the guide portion 51f has a tapered shape, it acts as an insertion guide when inserting it into the recess 52c.

[0049] The operating rope connection part 51g is made of a string-like metal member. The operating rope connection part 51g is U-shaped. Both ends of the U-shape are connected to the longitudinal center of the main body 51a. The operating rope connection part 51g is rotatable around the connection point with the main body 51a. When the operating rope 40 is connected to the bottom of the U-shape and pulled, the bottom of the U-shape is lifted upward, allowing the auger mechanism 51 to be hoisted up. Because the operating rope connection part 51g is made of a metal member, vibration is suppressed when hoisting the auger mechanism 51, improving operability.

[0050] The operating rod 52 includes a main body 52a, a handle 52b, a recess 52c, and an opening 52d. During excavation work, the operating rod 52 is connected to the auger mechanism 51 and operated by a worker on the ground to excavate the ground underground.

[0051] The main body 52a is a rod-shaped member, and its cross-sectional shape is, for example, circular. The main body 52a is made of, for example, metal.

[0052] The handle 52b is provided at the base end of the main body 52a. The handle 52b is a rod-shaped member that serves as a grip for the worker on the ground. The handle 52b extends perpendicular to the longitudinal direction of the main body 52a. That is, the main body 52a and the handle 52b form a T-shape. The worker excavates the ground by rotating the handle 52b clockwise.

[0053] The recess 52c is provided at the tip of the main body 52a. The cross-sectional shape of the recess 52c is, for example, circular, and the inner diameter of the recess 52c is larger than the diameter of the protrusion 51d of the auger mechanism 51, so that the protrusion 51d fits into the recess 52c.

[0054] The opening 52d is provided on the side of the recess 52c. The opening 52d includes a first portion, a second portion, and a third portion. The first portion extends longitudinally from the tip of the main body 52a toward the base. The second portion extends transversely from the base end of the first portion. The third portion extends longitudinally from the end of the second portion opposite to the first portion toward the base. The width of the opening 52d is greater than the width of the projection 51e.

[0055] <Excavation method> The excavation and soil removal method using the excavation and soil removal device 1 according to this embodiment will be described. Figure 7 is a flowchart showing the excavation and soil removal method using the excavation and soil removal device 1 according to this embodiment.

[0056] First, workers on the ground dig a hole within reach of the ground using shovels or similar tools. Next, as shown in Figure 7, the excavation and soil removal device 1 is set up (step S11). Specifically, the frame 10 is installed on the ground. At this time, the frame 10 is installed so that the hole is located in the center of the U-shape of the leg portion 11. Then, the support device 20 is attached to the arm portion 13 of the frame 10, and one end of the operating rope 40 is connected to the auger mechanism 51.

[0057] Next, the auger mechanism 51 is lowered (step S12). Specifically, the other end of the operating rope 40 is operated by a worker on the ground, and the auger mechanism 51, which is connected to the other end of the operating rope 40 via the drum 32, is lowered to the bottom of the hole.

[0058] Next, the operating rod 52 is connected to the auger mechanism 51 (step S13). Specifically, the operating rod 52 is operated by a worker on the ground so that the protrusion 51d of the auger mechanism 51 fits into the recess 52c of the operating rod 52. At this time, by pushing the operating rod 52, the projection 51e of the auger mechanism 51 enters along the first portion of the opening 52d of the operating rod 52 and reaches the end of the first portion. Then, by rotating the operating rod 52 in the circumferential direction, the projection 51e enters along the second portion. Furthermore, by pushing the operating rod 52 further, the projection 51e enters along the third portion of the opening 52d, and the operating rod 52 and the auger mechanism 51 are connected.

[0059] Next, excavation work is performed (step S14). Specifically, as shown in Figure 1, the auger mechanism 51 rotates when an operator on the ground pushes and rotates the operating rod 52. The rotation of the auger mechanism 51 excavates the ground underground. When the excavated soil accumulates in the hole, the excavation work is temporarily suspended.

[0060] Next, the operating rod 52 is removed from the auger mechanism 51 (step S15). Specifically, the operating rod 52 is removed from the auger mechanism 51 by being pulled upward along the third portion of the opening 52d, rotated circumferentially along the second portion, and pulled upward along the first portion.

[0061] Next, as shown in Figure 2, the auger mechanism 51 is lifted by the operating rope 40 and the soil removal work is performed (step S16). Specifically, the lever 33c is operated by a worker on the ground, the switch on the drive unit 34 is pressed, and the drive unit 34 is turned on. At this time, the various parts of the switch mechanism 33 work in conjunction to maintain the switch on of the drive unit 34, and the drive unit 34 continues to operate. Driven by the drive unit 34, the drum 32 is rotated and the operating rope 40 is wound up, lifting the auger mechanism 51.

[0062] When the auger mechanism 51 is lifted to any desired position on the ground, the various parts of the switch mechanism 33 work in conjunction, turning off the switch on the drive unit 34, automatically stopping the rotation of the drum 32, and completing the lifting of the auger mechanism 51. Then, the excavated soil loaded onto the auger mechanism 51 is discharged.

[0063] Next, if the excavation work is not yet complete (if NO in step S17), return to step S12 and perform the same work. On the other hand, if the excavation work is complete (if YES in step S17), the excavation and soil removal work is completed.

[0064] <Summary> As described above, the excavation and soil removal device 1 of this embodiment includes a frame 10 which is installed on the ground and includes a support part 12 which extends in a direction intersecting the ground and an arm part 13 which is supported at the tip of the support part and extends parallel to the ground; a support device 20 which includes a winch mechanism 30 which is supported by the arm part 13 and an operating rope 40 which is supported by the winch mechanism 30 and is wound up; and an excavation and soil removal mechanism 50 which includes an auger mechanism 51 which is supported on one side of the operating rope 40 and an operating rod 52 whose tip is detachably attached to the base end of the auger mechanism 51 and which can be operated by a worker on the ground. This makes it possible to perform electric soil removal work while performing manual excavation work. As a result, the burden on the worker during soil removal can be reduced and work efficiency can be improved.

[0065] Furthermore, in the excavation and soil removal device 1 of this embodiment, the winch mechanism 30 includes a drum 32 for winding up the operating rope 40, a drive device 34 for rotating the drum 32, and a switch mechanism 33 for controlling the drive of the drive device 34. As a result, during soil removal work, the drive device 34 can be easily driven by operating the switch mechanism 33, further reducing the burden on the worker.

[0066] Furthermore, in the excavation and soil removal device 1 of this embodiment, the switch mechanism 33 automatically stops the drive device 34 in accordance with the winding of the operating rope 40. This eliminates the need for the operator to stop the drive device 34, thereby further reducing the burden on the operator.

[0067] Furthermore, in the excavation and soil removal device 1 of this embodiment, a protrusion 51d is provided at the base end of the auger mechanism 51, a recess 52c is provided at the tip of the operating rod 52 into which the protrusion 51d of the auger mechanism 51 fits, and a guide portion 51f is provided on the protrusion 51d to guide the insertion of the recess 52c. This makes it easy to attach and detach the auger mechanism 51 and the operating rod 52.

[0068] (modified version) Figure 8 shows a modified example of the excavation and soil removal device 1 of this embodiment. As shown in Figure 8, in the modified example, the drum 32 may include a partition portion 32a that divides the drum 32 in the axial direction. The partition portion 32a is provided in the axial center of the drum 32. The partition portion 32a is also provided along half (180°) of the circumferential direction of the drum 32. The drum 32 supports the first turn of the operating rope 40 on one side separated by the partition portion 32a, and supports the second turn of the operating rope 40 on the other side. In other words, the turns of the operating rope 40 can be separated. This prevents the operating rope 40 from becoming entangled or overlapping when the drum 32 winds up the operating rope 40 during soil removal work, and prevents interference with the drive of the winch mechanism 30.

[0069] In the above embodiment, the frame 10 was configured to support the arm portion 13 with legs 11 and support portions 12, but the present invention is not limited thereto. For example, there may be no legs, and two pairs of support portions may support the arm portion 13. The pairs of support portions may be configured to extend diagonally to the ground (for example, at an angle of 45° to 60° to the ground) and support each other.

[0070] In the above embodiment, the configuration of each part of the frame 10 was fixed, but the present invention is not limited thereto. For example, the first part of the leg 11 may be extendable or retractable in the longitudinal direction. Also, for example, the first part of the leg 11 may be able to change its angle with respect to the second part. Also, for example, the arm 13 and the first reinforcing part 14 may be foldable so as to be stored parallel to the support part 12. Also, for example, the arm 13 and the first reinforcing part 14 may be rotatable in the circumferential direction of the support part 12.

[0071] In the above embodiment, the auger mechanism 51 is provided with one projection 51e, but the present invention is not limited thereto. For example, two projections 51e may be provided at 180° intervals. Also, correspondingly, two openings 52d may be provided in the operating rod 52.

[0072] In the above embodiment, the frame 10, support device 20, and excavation / soil removal mechanism 50 are made of metal, but the present invention is not limited thereto. Any material having strength comparable to that of metal may be used, for example, carbon or plastic.

[0073] (Note) The details described in each of the above embodiments are noted below.

[0074] (Note 1) A frame including a support part installed on the ground and extending in a direction intersecting the ground, and an arm supported at the tip of the support part and extending parallel to the ground, A support device including a winch mechanism supported by the arm, and an operating rope supported by the winch mechanism and wound up, An excavation and soil removal mechanism including an auger mechanism supported by one end of the operating rope, and an operating rod whose tip is detachably attached to the base end of the auger mechanism and which can be operated by a worker on the ground, An excavation and soil removal device equipped with the following features.

[0075] (Note 2) The excavation and soil removal device according to Appendix 1, wherein the winch mechanism includes a drum for winding up the operating rope, a drive device for rotating the drum, and a switch mechanism for controlling the drive of the drive device.

[0076] (Note 3) The drum includes a partition in the axial center (as described in Appendix 2).

[0077] (Note 4) The excavation and soil removal device described in (Appendix 2), wherein the switch mechanism automatically stops the drive device in accordance with the winding of the operating rope.

[0078] (Note 5) The excavation and soil removal device described in Appendix 1, wherein a protrusion is provided at the base end of the auger mechanism, and a recess is provided at the tip of the operating rod into which the protrusion of the auger mechanism fits.

[0079] (Note 6) The excavation and soil removal device described in Appendix 5, wherein the protrusion of the auger mechanism is provided with a guide portion that guides the insertion of the operating rod into the recess.

[0080] (Note 7) An excavation and soil removal method using an excavation and soil removal device described in any of (Appendix 1) to (Appendix 6), The steps include connecting the operating rod to the auger mechanism, The steps include: operating the aforementioned operating rod to excavate the ground into the ground using the auger mechanism; The steps include removing the operating rod from the auger mechanism, The steps include: lifting the auger section with the aforementioned operating rope to discharge the excavated soil; An excavation and soil removal method comprising the following: [Explanation of Symbols]

[0081] 1. Excavation and soil removal equipment 10... Stand 11...legs 12...Support part 13. Arm section 14. Reinforcement Section 1 15. Second reinforcement section 20...Support device 21. Winch mechanism support section 30. Winch mechanism 31... Drum support section 32... Drums 32a...Partition 33. Switch mechanism 33a...Holding part 33b...Release mechanism 33b-1...Protrusion 33b-2... Pipe 33c... lever 33c-1...Protrusion 33d... Lever retaining plate 33d-1...Opening 34. Drive system 40...Operating rope 41...Release mechanism operation part 50. Excavation and soil removal mechanism 51. Auger mechanism 51a...Main body 51b... Head section 51c... Screw section 51d···Convex part 51e...Protrusion 51f... Guide section 51g...Operating rope connection part 52...operation rod 52a...Main body 52b...Handle 52c···recess 52d...Opening

Claims

1. A frame including a support part installed on the ground and extending in a direction intersecting the ground, and an arm supported at the tip of the support part and extending parallel to the ground, A support device including a winch mechanism supported by the arm, and an operating rope supported by the winch mechanism and wound up, An excavation and soil removal mechanism including an auger mechanism connected to one end of the operating rope, and an operating rod whose tip is detachably attached to the base end of the auger mechanism and which can be operated by a worker on the ground, An excavation and soil removal device equipped with the following features.

2. The excavation and soil removal device according to claim 1, wherein the winch mechanism includes a drum for winding up the operating rope, a drive device for rotating the drum, and a switch mechanism for controlling the drive of the drive device.

3. The excavation and soil removal device according to claim 2, wherein the drum includes a partition portion in the axial central part.

4. The excavation and soil removal device according to claim 2, wherein the switch mechanism automatically stops the drive device in accordance with the winding of the operating rope.

5. The excavation and soil removal device according to claim 1, wherein a protrusion is provided at the base end of the auger mechanism, and a recess is provided at the tip of the operating rod into which the protrusion of the auger mechanism fits.

6. The excavation and soil removal device according to claim 5, wherein the protrusion of the auger mechanism is provided with a guide portion that guides the insertion of the operating rod into the recess.

7. An excavation and soil removal method using an excavation and soil removal device according to any one of claims 1 to 6, The steps include connecting the operating rod to the auger mechanism, The steps include: operating the aforementioned operating rod to excavate the ground into the ground using the auger mechanism, The steps include removing the operating rod from the auger mechanism, The steps include: lifting the auger mechanism with the aforementioned operating rope to discharge the excavated soil; An excavation and soil removal method comprising the following:

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