JPH0442357Y2 - - Google Patents

Description

[Detailed explanation of the invention] "Industrial application field" This invention is an excavator that digs a hole with a drilling rod,
Alternatively, the present invention relates to a pile burying machine that buries piles in a hole, or a machine that performs both of digging a hole and burying a pile.

``Conventional technology'' For example, when burying piles at a construction site, in order to avoid vibration and noise, a hole is dug while adding drilling rods one after another, and then the drilling rods are retrieved and piles are placed one after another into the dug hole. It is connected and buried. Conventionally, an excavator for digging the hole and a burying machine for burying the pile have been used separately.

When digging a hole, the surface soil is generally excavated with an auger, then a drilling rod with a bit is rotated to excavate, and additional drilling rods are added one after another. In order to install a drilling rod with a bit and to add more drilling rods, these items are brought to the drilling hole position of the excavator using a crane, attached to the excavator, and the drilling rod is connected. Collection and removal of these items was also carried out using cranes.

Similarly, when burying piles, a crane is used to hold the piles in the pile burying machine. The cranes used for these operations were also prepared separately from the excavators and burying machines.

Furthermore, there are cases in which excavation is carried out while rotating the drilling rod and injecting high-pressure drilling fluid from its tip, but in this case, the arrangement of the drilling fluid treatment device is changed using a crane. When the work site becomes narrower, it becomes difficult to separately provide an excavator, a pile burying machine, a crane, etc. in this way.

"Means for solving problems" The excavating/pile burying machine of this invention includes a movable body 31 and a skid 3 mounted on the movable body 31.
2, an excavation tower 34 erected on the skid 32, a rotating device 35 that is held vertically freely on the excavation tower 34 and to which a drilling rod or pile can be connected to the lower end; and its rotating device 3
Directly below the excavation tower 34, there is provided a supply mechanism 37 that rotates and positions a substantially vertically erected excavation rod or pile substantially horizontally, and the supply mechanism 37 has a rotating shaft substantially parallel to the excavation tower 34. 62, both ends of the rotating shaft 62 are rotatably held by upper and lower holding arms 61a and 61b, respectively, and a plurality of drilling rods or piles are mounted on the lower part of the rotating shaft at equal angular intervals. A supporting circular support plate 63 is attached, a fixing plate 68 is attached to the middle part of the rotating shaft 62, and a circular protecting plate 64 for protecting the upper side of the excavating rod or pile is rotatably attached to the upper part of the rotating shaft 62. The circular protection plate 64 is fitted with a cutout 65 for inserting and removing a drilling rod or pile, and a clutch rod that can be raised and lowered vertically to the circular protection plate 64 is provided. A plurality of engaging portions 83 are provided on the bottom surface at equal angular intervals, and the engaging portions 83
engages with the engaging rod 81 when the engaging rod 81, which can be raised and lowered, is raised, and the engaging rod 81 is connected to the rotating arm 80, which is rotatable in a horizontal plane about the rotation axis 62. The rotating arm is rotatable by a rotating cylinder 79, and the fixing plate 68 has a plurality of claws 6 at equal angular intervals.
7 is formed, and a clutch plate 77 is fixed integrally with the fixed plate 68, the clutch plate 77 has a plurality of holes 78 at equal angular intervals, and a rotating plate 69 is rotatable about the rotating shaft 62. A plurality of protrusions 71 are formed on the rotating plate 69 at equal angular intervals, and a cylinder 72 is attached between the rotating plate 69 and the fixed plate 68, and the cylinder 72 engages the pawl 67. The protrusion 71 can grip and release the digging rod or pile, and the clutch rod rises and engages a hole 76 provided at a predetermined position away from the rotation axis 62 of the holding arm 61a. When the circular protection plate 64 is rotated so that the notch 65 for inserting and removing the pile is at a predetermined position, the engaging rod 81 is engaged with the engaging portion 83 in this state, and the above-mentioned By rotating the circular support plate 63 with the rotating cylinder 79, the next drilling rod or pile is moved to the circular protection plate 64.
This excavation/pile burying machine is equipped with a mechanism that allows the excavation rod or pile to be inserted into and removed from the notch 65.

Since the excavator and pile burying machine of this invention is constructed as described above, the clutch rod of the circular protection plate 64 rises and the hole 76 provided at a predetermined position away from the rotating shaft 62 of the holding arm 61a is opened. When engaged with the circular protection plate 64, the notch 65 for inserting and removing the drilling rod or pile is in a predetermined position, that is, the drilling rod or pile is accurately brought under the rotating device,
The rotating arm 80 can be positioned in a position where it can be connected to a rotating device, and when the next drilling rod or pile is required, the rotating arm 80 can rotate in a horizontal plane about the rotating shaft 62 in this state. A circular support plate 63 that can be engaged with the engagement rod 81 by lifting up the engagement rod 81 that is fixed to the plate and can be raised and lowered up and down.
By engaging the engaging portion 83 of the circular support plate 63 with the rotating cylinder 79, the next excavating rod or pile comes to the notch 65 of the circular protection plate 64 for putting in and taking out the excavating rod or pile. , so that the notch 65 of the circular protection plate 64 for inserting and removing the drilling rod or pile is in a predetermined position, that is,
With the drilling rod or pile positioned in a position where it can be connected to a rotating device, the drilling rod or pile can be supplied one after another to the notch 65 for taking in and out of the drilling rod or pile. burying work can be done continuously.

Further, when the excavation work or the pile burying work is completed and the excavation rods are to be returned to the supply mechanism, the operation can be performed in the reverse order, and the excavation rods can be recovered to the supply mechanism one after another.

When loading a new drilling rod or pile into the supply mechanism, or when it becomes necessary to unload a drilling rod from the supply mechanism and place it in the drilling rod storage area on the ground,
The rod of the circular protection plate 64 is lowered and engaged with the hole 78 provided in the clutch plate 77, and in this state, it is fixed to a rotation arm 80 that can rotate in a horizontal plane about the rotation shaft 62 and rotates up and down. The engaging rod 81, which can be raised and lowered, is raised upward, and is engaged with the engaging portions 83 of the circular support plate 63, which are engageable at equal angular intervals, and the rotating cylinder 79
By rotating the circular support plate 63, the entire body including the circular protection plate 64 is rotated horizontally, and then the engagement rod 81 is lowered and disengaged from the engagement portion 83, the rotation cylinder 79 is retracted, and the engagement rod is moved again. 8
1 to engage the next engaging part of the previously engaged engaging part 83, and rotate the circular support plate 63 with the rotating cylinder 79. By repeating such operations a predetermined number of times, the circular protection plate 64
The notch 65 for loading and unloading the excavation rod or pile can be placed at a position rotated by 90 degrees or more, for example, 180 degrees from the above-mentioned predetermined position, and at this position, using the crane 39 mounted on the skid 32, , drilling rods and piles can be stacked on the circular support plate 63 or lowered from the circular support plate 63.

As described above, the excavation/pile burying device of this invention is capable of accurately positioning the excavation rod or the notch 65 for taking in and out of the pile at the predetermined position during excavation and pile burying, and It is possible to install the excavator rod and the drilling rod from the rear of the machine instead of from the front, and it is also possible to drill holes in narrow spaces close to building walls and bury piles in the holes. . In addition, since the crane is installed on top of the skid, the area occupied by the machine at the construction site is reduced compared to when the crane is installed on a separate device, allowing work to be carried out even in narrow spaces. Therefore, the position of other equipment such as the drilling fluid treatment equipment can be moved, and holes can be excavated and piles can be buried in the place where the equipment was located, which is extremely convenient.

``Example'' Pile burying procedure Before explaining the excavating/pile burying machine according to this invention, the first step is to explain the procedure of digging a hole and burying a pile in the hole.
This will be explained with reference to the figures. First, as shown in Figure 1A, a hole 12 is dug in the surface soil using an auger 11.
Then, the casing 1 is attached to the periphery of the entrance of the hole 12.
3 to prevent the hole 12 from collapsing, and in this state, the hole 12 is dug while rotating the drilling rod 16 with the pit 14 attached to the lower end, and at the same time, a high viscosity drilling fluid, generally an appropriate thickener for muddy water, is poured into the hole 12. Excavation is performed using drilling fluid by spraying a mixture of adhesive and other substances at high pressure. As the excavation progresses, the drilling rods 1
While adding 6, excavate, suck up the excavated liquid from hole 12 and take out the excavated soil.
In addition, the inside of the hole 12 is filled with drilling fluid 17. When the hole 12 is excavated to a predetermined depth in this manner, the lowermost end of the hole 12 is expanded to form a bulbous portion 18. During a certain period of time at the beginning of recovery of the drilling rod, the pit 14 is raised and rotated, and the drilling fluid is injected to perform drilling.After forming the bulbous portion 18 with an enlarged hole diameter in this way, the drilling rod is removed. 16
are collected one after another. At this time, the bulb part 18 replaces the drilling fluid with the root hardening fluid, and the portion above it replaces the drilling fluid with the peripheral fixing fluid. After the drilling rod has been recovered as shown in FIG. 1C, the piles 19 are sequentially sunk into the hole 12 as shown in FIG. 1D. This pile 1
9 is, for example, a ready-made reinforced concrete pile. A bag 21 is placed around the outer periphery of this lowermost stake 19. Once the piles 19 have been immersed, cement is poured through the connected piles 19 in sequence as shown in FIG.

Outline The excavating and pile-burying machine of this invention is mounted on a movable body 31, as shown in FIG. The movable body 31 is a tracked vehicle, and a skid (frame) 32 is attached to the movable body 31.
The skit 32 can be held on the ground by outriggers 33.

An excavation tower 34 is erected on top of the skid 32, and a rotating device such as a power swivel 35 is attached to the excavation tower 34 so as to be able to move up and down. This power swivel 35 is driven up and down by a feeding device 36 attached to the upper end of the excavation tower 34. Further, the power swivel 35 can rotate its rotation axis. That is, a drilling rod is attached to the rotating shaft of the power swivel 35 to rotate the power swivel 35, and the power swivel 35 is pushed down by the feeding device 36 to excavate, or a pile is attached to the power swivel 35 and the pile is sunk into the hole.

Furthermore, a feeding mechanism 37 is provided on the skid 32, and the feeding mechanism 37 can hold a drilling rod or pile and rotate it in a substantially horizontal plane, and the rotation causes the drilling rod or pile to be swiveled 32.
It can be brought directly under 5. skit 3
An operation room 38 is provided above the vehicle 2 for an operator to operate the vehicle. Furthermore, a crane 39 is mounted on the skid 32, and by means of the crane 39, piles and drilling rods can be attached to and removed from the supply mechanism 37. Further, various control valves for controlling various cylinders and the like are housed in a valve accommodating portion 41 on the skid 32, and an oil tank 40 for controlling them is provided.

Excavation Position Alignment When excavating, it is necessary to correctly position the excavation rod at the excavation position, but it is difficult to align the excavation rod with high precision only by controlling the movement of the movable body 31. The position of the excavation tower 34 can be precisely controlled within the horizontal plane. Further, in order to perform the excavation correctly and vertically, it is necessary to hold the skit 32 accurately horizontally. First, a positioning means for accurately positioning the excavation tower 34 will be explained.

That is, in this excavating/pile burying machine, as shown in FIGS. 3 to 5, the skit 32 is composed of a lower skit 32a and an upper skit 32b disposed above it, and each of these skits 32a, 3
As shown in FIGS. 6 and 7, 2b has a substantially rectangular shape, and is made into a frame shape to reduce weight. An excavation tower 34 is attached to one end of the upper skid 32b, and the end of the upper skid 32b on the side where the excavation tower 34 is erected is the front side. Further, a semicircular notch 43 is formed at the front end of the upper skit 32b so that a digging rod or the like attached directly below the swivel 35 can pass therethrough.

At least one, in this example two, guide rods 44a, 44b are retained in the lower skid 32a as shown in FIGS. 4 and 7. These guide rods 44a, 44b extend in the front-rear direction, and their rear ends are pivotable about shaft pins 45a, 45b in a substantially horizontal plane. These guide rods 44a, 44b are disposed in holes 46a, 46b formed in the lower skid 32a, and are held in the lower skid 32a so that their front ends can pivot in the left-right direction in FIG. 4 within the holes.

The upper skid 32b is connected to these guide rods 44.
a, 44b and is movable along these guide rods. That is, the retaining rings 47a and 47b are passed over these guide rods 44a and 44b, respectively.
An upper skid 32b is fixed on top of a and 47b. A moving cylinder 49 is attached between a reinforcing piece 48 provided in the middle of the lower skid 32a in the longitudinal direction and the front part of the upper skit 32b, and by expanding and contracting the moving cylinder 49, the upper skit 32b is It can be moved on guide rods 44a, 44b relative to the skid 32a. In other words, the upper skit 32b can be moved in the front-back direction.

Further, a rotation cylinder 51 is connected between the front end of the lower skid 32a and the front end of one of the guide rods 44b, and by expanding and contracting the rotation cylinder 51, the guide rod 44b is pivoted in a horizontal plane. The upper skid 32b rotates about the pin 45b, and therefore the upper skid 32b rotates relative to the lower skid 32a, so that the excavation tower 34 can be moved in the left-right direction in FIG.

Further, in this example, rings 52a, 52b (52a not shown) are inserted through guide rods 44a, 44b at the rear end of the upper skit 32b, and these rings 52a, 52b are attached to the rear end of the upper skit 32b. cylinder 53
a, 53b, these cylinders 53a,
By strongly pulling up the rod 53b, the positions of the guide rods 44a, 44b can be fixed.

With this configuration, by expanding and contracting the moving cylinder 49, the excavation tower 34 can be moved and adjusted in the front and rear directions, and by expanding and contracting the rotation cylinder 51, the position of the excavating tower 34 in the left and right direction can be adjusted. can be adjusted.

As shown in FIG. 3, the excavation tower 34 is configured so that it can be tilted backwards into a nearly horizontal state as indicated by a dotted line 34' by means of a cylinder 54. In this state, a pin 55 can be inserted to stably hold the upright state. The crane 39 can also be tilted forward in the figure by the cylinder 56, so that it can be tilted almost horizontally. Crane 3
9 can extend and contract its length and can rotate through 360 degrees. The operating chamber 38 is provided on the upper skid 32b, and the crane 39 is mounted on the lower skid 32a. A configuration for holding the skit 32 horizontally for vertical digging with the drilling rod will be described later.

Supply Mechanism A drilling rod or pile is brought under the rotating shaft 57 of the power swivel 35 and connected to it to perform excavation or sinking of the pile.The supply mechanism 37 supplies the drilling rod or pile to the position of the power swivel 35. Do it like this. The supply mechanism 37 can rotate the drilling rod or pile in a horizontal plane from a position below the power swivel 35, and at the appropriately rotated position, the drilling rod or pile can be removed from the supply mechanism by a crane. It is designed so that it can be attached to a mechanism. In this example, the supply mechanism 37 holds a plurality of drilling rods, and is capable of automatically sequentially feeding and recovering the drilling rods.

For this reason, the rod holding mechanism 58 is
As shown in the figure, it is provided on the upper skid 32b so as to be rotatable in a horizontal plane. For example, as shown in FIG. 4, the excavation tower 34 has two guide columns 34a, 3
4b is erected in parallel on the upper skit 32b,
Both ends thereof are connected by a connecting portion 34c, and a swing shaft 59 is rotatably held on one of the guide columns 34b substantially parallel to the guide column 34b as shown in FIG. Holding arms 61a and 61b are attached to the upper and lower ends of the swing shaft 59, respectively, and the rotating shaft 62 is rotatably held between the holding arms 61a and 61b. A circular support plate 63 is fixed to the lower end of the rotating shaft 62 with the rotating shaft 62 inserted through its center, and a circular protection plate 64 is inserted through the center of the upper end of the rotating shaft 62 to prevent rotation. It is held movably.

As shown in FIG. 10, the protection plate 64 has a cutout 65 formed in a part thereof for insertion and removal. A temporary fixing mechanism 66 is provided at an intermediate portion of this rotating shaft 62. As shown in FIG. 10, in the temporary fixing mechanism 66, a fixing plate 68 having a claw 67 projecting obliquely with respect to the circumferential direction is fixed to the rotating shaft 62, and a rotating plate 69 rotates in close opposition to the fixing plate 68. It is freely held on the rotating shaft 62. The rotating plate 69 has protrusions 71 at equal angular intervals as shown in FIG. As shown in FIGS. 9 and 11, a fixed plate 68 and a rotating plate 69
A cylinder 72 is installed between the cylinder 7 and
2, the rotating plate 69 can be rotated by a certain angle with respect to the fixed plate. Can be canceled.

As shown in FIG. 9, positioning recesses 73 are formed on the support plate 63 at equal angular intervals, into which the lower end of the excavation rod 16 can be inserted and positioned. Further, a flange 74 is formed on the lower side of the periphery of the protection plate 64. Furthermore, a protective plate 64
A clutch cylinder 75 extending vertically is attached to the clutch cylinder 75, and the upper end of the rod of the clutch cylinder 75 can be inserted into a hole 76 formed in the holding arm 61a and engaged with the holding arm 61a. The lower end of the rod of the clutch cylinder 75 can be selectively inserted into equally spaced holes 78 in a clutch plate 77 fixed to the rotating shaft 62. In other words, when the rod of the clutch cylinder 75 is moved upward, the retaining plate 64 is connected to the retaining arm 61a, and is disconnected from the clutch plate 77, and vice versa.
When the rod 5 is moved downward, the clutch plate 77
The holding arm 61a is inserted into the hole 78 and connected to the clutch plate 77, and then disconnected from the holding arm 61a.

As shown in FIG. 12, the holding arm 61b and the rotating shaft 6
A rotating cylinder 79 is connected between 2 and 2. A rotating arm 80 is rotatably held on the rotating shaft 62, a cylinder 81 for moving the rod up and down is attached to the rotating arm 80, and a cylinder 82 for moving the rod up and down is attached to the holding arm 61b. The cylinders 81 and 82 have engaging holes 83 formed at equal angular intervals under the support plate 63, as shown in FIG.
can be selectively engaged with. The number of claws 68, protrusions 71, positioning recesses 73, holes 78 in the clutch plate 77, engagement holes 83, etc. that can be held by the drilling rod, 12 in this example, are provided.

Insert the lower end of the excavating rod 16 into one of the positioning recesses 73 of the support plate 63 at the position of the insertion/removal notch 65, and then press the claw 6 of the temporary fixing mechanism 66.
7 and the protrusion 71. In this state, the cylinder 72 is controlled to hold the excavating rod 16 between the claw 67 and the protrusion 71. Next, the rod of the clutch cylinder 75 is moved upward and its upper end is connected to the hole 76 of the holding arm 61a, that is, the protection plate 6
4 is prevented from rotating, the rod of the cylinder 81 provided on the lower side is projected upward and inserted into the supply hole 83, and the rod of the cylinder 82 is retracted. In this state, if the rotating cylinder 79 is controlled, the rotation cylinder 79 is supported. Board 6
3. The rotating shaft 62 is rotated by a certain angle, for example, 30 degrees,
Since the protection plate 64 is fixed to the holding arm 61a as described above, the excavation rod 16 placed on the support plate 63 and held by the temporary fixing mechanism 66 rotates together with the rotating shaft 62. After that, the rod of the cylinder 81 is retracted, the rod of the cylinder 82 is raised and inserted into the engagement hole 83, and in this state, when the rotating cylinder 79 is reversely controlled, only the rotating arm 80 on the rotating shaft 62 returns. The previously rotated rotational position of the excavation rod 16 is maintained. In this way, by controlling the cylinders 81 and 82 in the opposite direction and controlling the rotating cylinder 79, the drilling rod 16 disposed on the support plate 63 is rotated to the inner side of the periphery 74 of the protection plate 64. let Even if the holding by the temporary fixing mechanism 66 is released in this state, the upper end of the excavating rod 16 will not fall down due to the presence of the periphery 74 of the retaining plate 64, and the protection plate 64
The drilling rod 16 is held between the support plate 63 and the support plate 63. In this way, the drilling rod 16 is moved at an angle of, for example, 30°.
Twelve pieces can be held around the rotating shaft 62 at angular intervals.

A pile holder 84 is held at the intermediate portion of the rotating shaft 62, and by controlling a movable portion 84a of the pile holder 84 with a cylinder 85, the pile 19 can be held in place. With the lower end of the clutch cylinder 75 inserted into the hole 78 of the clutch plate 77 as shown in FIG. 9, the rod holding mechanism is activated by controlling the cylinders 81, 82 and the cylinder 79 as described above. 58 as a whole can be rotated around a rotation axis 62. In other words, the angular position of the insertion/removal notch 65 can be arbitrarily set with respect to the holding arm 61a.

As shown in FIGS. 9 and 12, a swinging cylinder 86 is attached between the guide column 34b of the excavation tower and the end of the holding arm 61b, and by controlling the swinging cylinder 86, the rod is The entire holding mechanism 58 can be rotated around a swing shaft 59. In other words, the rod holding mechanism 58 can be rotated, for example, by about 90 degrees in a substantially horizontal plane.
As a result of this rotation, the rod holding mechanism 58 can be rotated to a position directly below the swivel 35 as shown in FIGS. 4 and 5, or to a position away from it, that is, toward the crane 39 side. I can do it. Therefore, the drilling rod 16 and the pile 19 can be held by the rod holding mechanism 58 from any position (direction), not only from the front end of this machine, that is, from the excavation position by the drilling rod or from the position where the pile is sunk. let me,
Further, a crane can be used to remove the pile from the rod holding mechanism 58 or to hold the stake in the rod holding mechanism.

Chucking Furthermore, in this machine, the digging rod 16 can be attached to or detached from the power swivel automatically or by remote control, and the stake 19 can also be attached to the power swivel 35.
As shown in FIGS. 3 and 4, a power swivel mount 88 is installed between the guide columns 34a and 34b so that it can be moved up and down while being guided by the guide columns 34a and 34b.
is installed. Below the power swivel mount 88, a tracking mount 89 is connected to the power swivel mount 8 by cylinders 91a and 91b.
It is installed so that it can be moved up and down relative to 8.
The tracking mount 89 also has guide columns 34a, 3
4b and is guided and held so as to be able to move up and down.

Chat King mount 89 and Chat King 91
is held, and the rod holding mechanism 58 is moved to the power swivel 3 as shown in FIGS. 15, 16, and 16A.
5, one drilling rod can be inserted through the chucking 91, and the drilling rod 16 can be gripped by the chucking 91.
The chucking mount 89 is a rod holding mechanism 58
It is located on the outer periphery so as not to get in the way.

The chuck 91 can be rotated while gripping the excavation rod 16. That is, the cylindrical rod guides 90a, 90b are arranged vertically and coaxially and attached to the chucking mount 89, and the cylinder 92 and the engaging piece 94 are arranged vertically in the openings formed in the rod guides 90a, 90b. The cylinder 9 is held rotatably around the
2 is a rod guide 90a, 90b through the opening.
In other words, the rod guide 90a,
The excavating rod inserted through 90b can be held by the cylinder 92 against the engagement piece 94 and gripped. The engagement piece 94 protrudes forward and engages the movable cylinder 9.
It engages with a protrusion 96 fixed to the tube of No. 5. The movable cylinder 98 is held by a chucking mount 89 so as to be able to move left and right, and rods 95a and 95b on both sides thereof are fixed to the chucking mount 89. Therefore, if hydraulic pressure is supplied to the rod 95a side of the movable cylinder 95 in the figure, and the hydraulic pressure is reduced to the rod 95b side, the tube of the movable cylinder 95 moves to the right in the figure, and the excavating rod 16 gripped by the cylinder 92b moves to the right in the figure. It will rotate counterclockwise.
To rotate the excavating rod in the opposite direction, hydraulic pressure may be supplied to the rod 95b side of the cylinder 95.
Note that the tracking mount 89 has a hole 97 through which a chain, which will be described later, passes.

Therefore, one of the excavating rods 16 is positioned directly below the rotating shaft 57 of the swivel, and in that position, the insertion/removal notch 65 in the protection plate 64 of the rod holding mechanism is opposed to the chucking 91, and in this state, the cylinder 91a is , 91b to position the chucking mount 89 below the protection plate 64, and one drilling rod 16 held by the rod holding mechanism 58 is inserted into the hole 98 of the chucking 91. Thereafter, the cylinders 92a and 92b are controlled to grip the drilling rod 16, and in this state, the chucking mount 89 is moved to the cylinders 91a and 92b.
91b to bring it closer to the swivel mount 88, that is, bring one of the drilling rods 16 gripped by the chucking 91 closer to the rotating shaft 57 of the swivel 35, and by rotating the swivel 35, the lower end of the swivel rotating shaft 57 The female thread 99 formed at the top of the drilling rod 16 is screwed into the female thread 101 (FIG. 17) formed at the upper end of the drilling rod 16 to connect the drilling rod 16 to the swivel rotation shaft 57. The rod holding mechanism 58 is rotated to remove anything other than the connected drilling rod from the position of the power swivel 35. Hereinafter, removing the rod holding mechanism 58 from directly below the power swivel will be referred to as a return operation. After that, lower the power swivel, bring the drilling rod connected to the power swivel close to the upper end of the drilling rod that is already in the ground, and rotate the power swivel 35 to remove the male screw formed at the lower end of the newly connected drilling rod. 102 (FIG. 17) is screwed and connected to the upper female thread 101 of the uppermost excavation rod that has already been inserted into the ground. In this case, in order to complete the connection, the excavation rod located underground is held by a rod clamp.

Rod Clamp As shown in FIGS. 3 and 4, the rod clamp 103 has cylinders 104a and 104b attached to the upper skid 32b on both sides of the notch 43 shown in FIG. 7 at the front end position of the upper skid 32b (see FIG. 18). , see FIG. 19), the rods of the cylinders 104a and 104b are equipped with a presser 105.
a, 105b are attached, and these pressers 105
The opposing surfaces of a and 105b form a substantially common cylindrical surface, and the axial direction of the cylindrical surface is the vertical direction of the swivel rotation axis. There is a guide piece 1 on the upper side of the pressers 105a and 105b.
06a and 106b are respectively fixed, and a drilling rod suspended from a swivel rotation shaft 57 is guided between these guide pieces 106a and 106b so that it can descend.

Further, each tube of the cylinders 104a, 104b is extended toward the pressers 105a, 105b, respectively, to form extensions 107a, 107b, and the pressers 105a, 105b are fitted into these extensions and guided thereto. In this case, the extension portions 107a and 107b facing the guide pieces 106a and 106b are provided with the grooves shown in FIG.
As shown in FIG. 18A and FIG. 19A, the notch 10
8 is formed. The guide pieces 106a and 106b are guided by the notch 108, and the cylinder 1
Even when the rods 04a and 104b are expanded and contracted, the rods do not rotate, and the guide pieces 106a and 106b always face each other and are located on the upper side. Presser 105
A drilling rod is located between a and 105b,
The drilling rod 16 is connected to the cylinders 104a and 104.
It can be held and fixed by controlling b.
In this fixed state, by rotating the swivel 35, the digging rod connected to the swivel rotation shaft 57 above the swivel 35 and the digging rod held by the rod clamp 103 can be connected by screw connection. At this time, the rod clamp 103 receives the rotational force, but the rotational force is applied to the holding tools 105a and 105.
b and the extensions 107a, 107b, and hardly reach the rods of the cylinders 104a, 104b, so there is no risk that the seals of the cylinders will be deteriorated by the rotational force. In this example, the fixed pieces 110a, 110b of the guide pieces 106a, 106b are located in the notch 108, and the rotation of the guide pieces is prevented.

As shown in FIGS. 3 and 19, an elastic ring 109 made of rubber is attached to the holding tool 1 just below the holding tools 105a and 105b of the rod clamp 103.
11 is fitted and held. The elastic ring 10
9, a drilling rod held by a swivel 35 is positioned so as to be inserted therethrough in resilient contact. Therefore, when the drilling rod 16 is recovered, the drilling rod passes through the elastic ring 109, so the mud attached to the drilling rod 16 is removed, and the chuck 91 and the rod clamp 10 are removed.
3 can be reliably maintained.

The excavating rod is held by the rod clamp 103, and the swivel 35 is made freely rotatable, and the chuck 91 grasps the excavating rod connected to the swivel rotating shaft to control the movable cylinder explained in FIGS. 15 and 16. By doing so, the upper drilling rod can be rotated, ie the threaded connection between the upper drilling rod and the drilling rod held by the rod clamp 103 can be loosened. In the loosened state, the holding by the chuck 91 is also loosened, and by rotating the swivel 35 in the opposite direction, the excavating rod held by the rod clamp 103 and the swivel rotating shaft 5 are removed.
7, and then connect the excavating rod to the swivel rotation shaft 57 by performing the reverse operation of connecting the excavation rod from the rod holding mechanism 58 to the swivel rotation shaft 57. By holding the excavating rod in the rod holding mechanism 58, the excavating rod can be recovered.

Since the rod clamp 103 becomes an obstacle when burying the pile, the rod clamp 103 is designed to be able to be removed from the above-mentioned position. That is, as shown in FIG. 18, FIG. 18A, and FIG. 19, the rod clamp 103 (cylinder 104a,
104b) is mounted on the movable plate 301, and the movable plate 301 has guide rails 302a, 3 on both sides.
02b and is held so that it can move back and forth on the upper skid 32b, and the movable plate 301
By controlling the cylinder 303 connected between the upper skid 32b and the upper skit 32b, the movable plate 301 can be retracted to the dotted line position in FIG. An elastic ring 109 is also attached to the movable plate 301.

As shown in FIG. 19, a flange 16a is formed in the middle of the drilling rod with a bit, and the drilling rod is attached to a power swivel with an elastic ring 109 passed through it.
is positioned at the height of the holder 111, move the rod clamp 103 forward, and
An elastic ring 109 can be fitted within 1. Furthermore, when the excavation rod is recovered, the elastic ring 109 can also be recovered by performing the reverse operation.

As shown in FIGS. 3 to 5, the excavation tower 34
A feeding device 36 is attached above, that is, on the connecting portion 34c, and the feeding device 36 has, for example, a sprocket 114 attached to the rotating shaft of a hydraulic motor 113, and the sprocket 114 is a large sprocket attached to a drive shaft 115. The drive shaft 115 is connected to the sprocket 116 by a chain 117 to reduce the speed, and the sprocket 1 is attached to both ends of the drive shaft 115.
Chains 119a and 119b are attached to these sprockets 118a and 118b, respectively, to further reduce the speed. One end of each of the chains 119a, 119b is fixed to the swivel mount 118, and the other end goes around the sprockets 121a, 121b attached to the lower ends of the guide columns 34a, 34b, respectively, and further passes through the hole 97 of the chucking mount 89. and is fixed to a swivel mount 88. Therefore, the hydraulic motor 113 of the feeding device 36
is rotated in one direction to lower the swivel mount 88, and rotated in the opposite direction to raise the swivel mount 88. In this way, the swivel 35 can be moved up and down. A rotary encoder 122 is mounted, for example, on the rotating shaft of the hydraulic mower 113 in order to measure the vertical amount of the swivel 35 and to measure the depth of excavation by the excavating rod.

The power swivel swivel 35 has a hydraulic motor 124 mounted on a swivel mount 88, and a gear 125 mounted on its rotating shaft as shown in FIG.
The gear 125 is meshed with a large gear 126, and the rotating shaft on the large gear 126 is a swivel rotating shaft 57.
is connected to. Therefore, the rotation of the hydraulic motor 124 causes the swivel rotation shaft 57 to rotate at a reduced speed. The rotation amount and rotation speed at this time can be measured by a rotary encoder 128 connected to the gear 125.

Further, in this machine, excavation is performed by rotating the pit 14 (FIG. 1B) and at the same time by injecting a high pressure drilling fluid. For that purpose, the swivel rotation axis 5
7 is a double tube as shown in FIG. 20, and an inner tube 129 with a hole in the center passes through it.
A cylindrical passage 132 is formed between the outer tube 131 and the outer tube 131, and the outer tube 131 protrudes above the case 133 of the large gear 126, and a joint portion 134 is rotatably covered over the protruding end thereof. . Passage 13
A high pressure pipe connection part 135a is provided at the upper end of the joint part 134 and a low pressure pipe connection part 135 is provided at the side of the joint part 134 in order to supply liquid from the outside into each of the joint parts 134 and 2.
b are provided respectively.

A high-pressure drilling fluid is supplied into the inner pipe 129, and a large amount of peripheral fixing fluid, cement milk, etc. is supplied to the cylindrical passage 132 at low pressure. High-pressure drilling fluid and cylindrical passage 13 from inside the inner pipe 129 of the swivel rotating shaft inside
Drilling rod 16 is also connected to the first
As shown in Figure 7, it is a double pipe.

Pile Connection Jig In order to connect the pile to the power swivel 35, a pile connection jig is connected to the power swivel 35. The pile connection jig 137 has a substantially cylindrical shape as shown in FIG.
39, and a connecting female screw 141 is fixed at the center of the upper plate 139.
1 allows the male thread 99 of the rotating shaft of the power swivel or the lower end male thread 102 of the drilling rod to be screwed together. Furthermore, in this example, this jig 1
37 can also be used to connect the final pile and the power swivel, and a cylindrical female screw 142 is removably attached to the inner peripheral surface of the cylindrical body 138 by a screw 143. The cylindrical female thread 14
2 can be screwed to the male thread 144 at the upper end of the pile 19. In other words, as shown in FIG. 22, the pile 19 has a male thread 144 formed at its upper end, a female thread 145 that can be screwed together with this male thread 144 at its lower end, and the pile 19 has a central hole through it.

On the other hand, the final pile, that is, the pile to be buried at the top, has a cylindrical protrusion 146 having a smaller diameter than the outer circumferential diameter protruding from its upper end, as shown in FIG. 21B, for example. A pair of pins 147 are protruded and fixed 180° apart from the side surfaces of. In the pile connection jig 137, an inner cylinder 148 is attached concentrically to the inside of a cylindrical body 138.
As shown in FIG.
The pin 147 of the final stake 19 can be inserted into and connected to the pin 147 (which has a letter shape).

Pile Clamp As shown in FIGS. 3, 4, and 23, a pile clamp 151 is provided below the rod clamp 103. This pile clamp 151 is provided with a rotating arm 153 that is rotatable around a shaft 152.
One end of the arm 153 is connected to a cylinder 154, and a pile presser 155 is attached to the other end of the arm 153. The pile presser 155 is shaped to follow the circumferential surface of the pile 19. Such a rotating arm 15
3. A pair of cylinders 154 and pile pressers 155 are provided facing each other. Both cylinders 154
By controlling this, the stake 19 can be held between both sides.

When connecting the pile 19 to the swivel rotation shaft 57 in the same way as when connecting the excavation rod 16 to the swivel rotation shaft 57, attach the pile connection jig 13 to the rotation shaft 57 in advance.
7 is connected, and in this state, the pile 19 is held by the pile presser 84 of the rod holding mechanism 58, and in this state, the pile connecting jig 137 is rotated and held by the rotation of the swivel 35. Connect by screwing together. Thereafter, the lower pile is held by the pile clamp 151, and in this state, the swivel is lowered and rotated, and the upper pile connected to the swivel is screwed to the lower pile.

Horizontal Control Next, control for holding the skit 32 horizontally will be explained. For example, as shown in FIG. 24, the outriggers holding the skit 32 are the front outriggers 33a, 33b and the rear outriggers 3.
Let us take as an example the case where it is held by four outriggers 3c and 33d. An inclinometer is provided at the intersection of the two intersecting straight lines, but in this example, the inclinometer 1 is installed on the line 161 connecting the outriggers 33a and 33d.
62 is provided, and the straight line 16 is determined by the inclinometer 162.
1 to detect the inclination angle with respect to the horizontal plane,
Further, the inclination of a line 163 perpendicular to this line 161 with respect to the horizontal plane is detected by an inclinometer 162. Inclinometer 16
The support section 2 is provided, for example, in the operation chamber 38 shown in FIG.

The outriggers 33a and 33d are controlled to be horizontal by the inclinometer 162 in accordance with the detected inclination angle of the straight line 161 with respect to the horizontal plane. Then, by controlling one of the outriggers 33a and 33d such that, for example, one of the outriggers 33a and 33d is raised and the other is lowered using the ratio a:d, the straight line 161 is made horizontal with a small amount of control. In addition, in order to correct the inclination of the straight line 163 with respect to the horizontal plane, a line connecting the outriggers 33b and 33c is drawn as a straight line 163.
Outriggers 33b, 33c when projected on 63
Similarly, the outriggers 33b and 33c are controlled in opposite directions corresponding to the distances b and c between the inclinometer 162 and the inclinometer 162. In other words, the intersection between the line connecting the outriggers 33b and 33c and the straight line 161 and the outriggers 33b, 3
The inclination of the straight line 163 with respect to the horizontal plane may be corrected according to the distances b' and c' between the lines 3c.

Control of these outriggers 33a to 33d is performed at high speed when the outriggers are first extended, and correction control for slight deviations for maintaining the horizontal position is performed little by little with high precision. From this point of view, the drive cylinders 164a to 164d (25th
), switching valves 165a to 165d for raising and lowering the outriggers are provided in the hydraulic passages for each cylinder, respectively, and these valves 165a to 165 for raising and lowering the outriggers are provided in the hydraulic passages for each cylinder.
A high-speed control valve 166 is inserted into the hydraulic passage common to d, and a low-speed control valve 167 is provided in parallel with this valve 166. Furthermore, a pressure switch 1 is installed in the hydraulic passage on the switching valves 165a to 165d side of the high-speed control valve 166 to detect the hydraulic pressure.
68 are provided. The pressure switch 168 closes the valve 16 when the detected hydraulic pressure is above a predetermined value.
6 is switched to control by valve 167.

"Effect of the invention" According to this invention, the skit 3 is placed on the movable body 31.
A drilling tower 34 is erected on top of the skid 32, and a power swivel 35 as a rotating device is held on the drilling tower 34 so as to be able to move up and down. The pile can be held and rotated to be brought under the power swivel 35, and the excavation rod etc. that will be needed next can be accurately rotated and brought under the power swivel 35. .

That is, when the clutch rod of the circular protection plate 64 rises and engages with the hole 76 provided at a predetermined position away from the rotating shaft 62 of the holding arm 61a, the drilling rod or stake of the circular protection plate 64 is inserted and removed. The cutout 65 allows the drilling rod or pile to be placed in a predetermined position, that is, in a position where the drilling rod or pile can be accurately brought under the rotating device and connected to the rotating device, and the next drilling rod or pile can be positioned. If you need
In this state, an engaging rod 81 fixed to a rotating arm 80 movable in a horizontal plane around the rotating shaft 62 and capable of being raised and lowered up and down is raised, and a circular support that can be engaged with the engaging rod 81 is raised. By engaging the engaging portion 83 of the plate 63 and rotating the circular support plate 63 with the rotating cylinder 79, the next excavating rod or pile is inserted into the notch 65 of the circular protection plate 64 for putting in and taking out the excavating rod or pile. Since the notch 65 of the circular protection plate 64 for putting in and taking out the drilling rod or pile is in a predetermined position, that is,
With the drilling rod or pile positioned in a position where it can be connected to a rotating device, the drilling rod or pile can be supplied one after another to the notch 65 for taking in and out of the drilling rod or pile. burying work can be done continuously.

Further, when the excavation work or the pile burying work is completed and the excavation rods are to be returned to the supply mechanism, the operation can be performed in the reverse order, and the excavation rods can be recovered to the supply mechanism one after another.

When loading a new drilling rod or pile into the feeding mechanism, or when it becomes necessary to unload a drilling rod from the feeding mechanism and place it in the drilling rod storage area on the ground,
Lower the clutch rod of the circular protection plate 64,
The hole 78 provided in the clutch plate 77 is engaged, and in this state, the engagement rod 81, which is fixed to a rotating arm 80 that can be rotated in a horizontal plane about the rotating shaft 62 and can be raised and lowered, is raised. The circular support plate 63 is rotated by the rotary cylinder 79, and the circular support plate 63 is rotated by the rotating cylinder 79, thereby achieving circular protection. The entire body including the plate 64 is rotated horizontally, and then the engagement rod 81 is lowered to disengage from the engagement portion 83, the rotating cylinder 79 is contracted, and the engagement rod 81 is raised again to restore the previously engaged engagement. The circular support plate 63 is rotated by the rotating cylinder 79 by engaging the next engaging portion of the portion 83 . By repeating such operations a predetermined number of times, the notch 65 for inserting and removing the excavating rod or pile of the circular protection plate 64 is rotated at an angle of 90 degrees or more from the above-mentioned predetermined position, for example.
The crane 39 mounted on the skid 32 can be used to move the drilling rod or pile to the circular support plate 63.
It becomes possible to stack them on the top or take them down from the top of the circular support plate 63.

The excavation and pile burying device of this invention is
It is possible to perform excavation work and pile burying work with good workability, and it is also possible to accurately position the notch 65 for putting in and taking out the excavation rod or pile at the above-mentioned predetermined position during excavation and pile burying. Ori,
In addition, the installation of piles and the drilling rod can be done from the rear of this machine without having to do it from the front of the machine, allowing the installation of piles and the drilling rod to be carried out in a safer location. Since the work can be carried out in narrow spaces, it is also possible to drill holes close to building walls and bury piles in the holes.

[Brief explanation of the drawing]

Figure 1 is a sectional view to explain the excavation and pile burying process, Figure 2 is a perspective view showing the external appearance of the excavation and pile burying machine according to this invention, and Figure 3 is a side view of the excavation and pile burying machine. , FIG. 4 is a right side view of FIG. 3, FIG. 5 is a plan view of FIG. 3, FIG. 6 is a side view showing the connection state of the lower and upper skits, and FIG. Plan view, Figure 8 is a sectional view taken along line AA in Figure 6,
FIG. 9 is a vertical cross-sectional view showing an example of the supply mechanism, and FIG.
The figure is a plan view of Fig. 9, Fig. 11 is a sectional view taken along line BB of Fig. 9, Fig. 12 is a sectional view taken along line CC of Fig. 9, and Fig. 11 is a sectional view taken along line CC of Fig. 9.
Figure 3 is a sectional view taken along the DD line in Figure 9, and Figure 14 is a cross-sectional view of Figure 13.
15 is a plan view of the chucking 91, FIG. 16 is a front view of the chucking 91, FIG. 16A is a sectional view taken along the line PP of the chucking 91, FIG. Figure 18 shows rod clamp 1
Figure 18A is a cross-sectional view of the right half of 03, Figure 18A is a cross-sectional view taken along line HH in Figure 18, Figure 19 is a front view of Figure 18, with a portion of Figure 18 in cross-section, Figure 19A is Figure 19 FIG. 20 is a front view of a half section of the power swivel 35, FIG. 21 is a cross-sectional view of the pile joining jig 137, and FIG. Figure B shows the state of connection with the final pile, and Figure C shows Figure B rotated by 90 degrees.
FIG. 22 is a front view showing the intermediate pile, FIG. 23 is a plan view showing a part of the pile clamp 151, FIG. 24 is a plan view showing the relationship between the outrigger and the inclinometer, and FIG.
The figure is a diagram showing the relationship between the drive cylinder and the switching valve with respect to the outrigger.

Claims (1)

[Scope of Claim for Utility Model Registration] A movable body, a skid mounted on the movable body, a drilling tower erected on the skid, and a drilling rod held on the excavation tower so as to be able to move up and down. Or a rotating device to which the pile can be connected, and a feeding mechanism installed on the skid and directly below the rotating device to rotate and position the substantially vertically erected drilling rod or pile substantially horizontally. The supply mechanism has a rotating shaft substantially parallel to the excavation tower, both ends of the rotating shaft are rotatably held by upper and lower holding arms, and an equiangular A plurality of circular support plates are installed at intervals to support the lower sides of the drilling rods or piles, a fixing plate is installed on the middle part of the rotating shaft, and the upper side of the drilling rods or piles is protected on the upper part of the rotating shaft. A circular protection plate is rotatably fitted into the circular protection plate, and the circular protection plate has a notch for inserting and removing the excavation rod or pile, and a clutch rod that can be raised and lowered vertically to the circular protection plate is provided. , A plurality of engaging parts are provided on the bottom surface of the circular support plate at equal angular intervals, and the engaging parts engage with the engaging rod that can be raised and lowered when the engaging rod is raised. The engagement rod is fixed to a rotating arm that can rotate in a horizontal plane about the rotation axis, the rotating arm is rotatable by a rotating cylinder, and the fixing plate has the above-mentioned A plurality of pawls are formed at equal angular intervals, a clutch plate is fixed integrally with the fixed plate, the clutch plate has a plurality of holes at equal angular intervals, and a rotating plate is rotated about the rotation axis. A plurality of protrusions are formed at equal angular intervals on the rotary plate, and a cylinder is installed between the rotary plate and the fixed plate, and the cylinder allows the claws and the protrusions to connect. The digging rod or pile can be grasped and released, and when the clutching rod is raised and engaged with a hole provided in the upper holding arm at a predetermined position away from the axis of rotation. The excavation rod of the circular protection plate or the notch for putting in and taking out the pile is rotated to a predetermined position, and in this state, the engaging rod is engaged with the engaging part, and the rotating rod is rotated to a predetermined position. An excavation/pile burying machine equipped with a mechanism that allows the next excavation rod or pile to come to the notch for putting in and taking out the excavation rod or pile in the circular protection plate by rotating the circular support plate with a cylinder.