JP2002061184A - Pile burying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pile burying device for burying plural piles to be connected to each other capable of correctly operating and displaying depth of the piles. SOLUTION: This device is provided with a lifting body 15 which is moved up and down along a leader 13, a lifting motor 22 to move the lifting body 15 up and down, an encoder 32 connected to a rotation part of the lifting motor 22, and a controller 50. The controller 50 adds up pulses of the encoder 32 when the lifting body 15 is moved down to operate depth of the pile to be displayed in a display unit 62.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile embedding apparatus for excavating a hole in the ground while adding an auger rod to an auger, and embedding a plurality of piles in the hole.

[0002]

2. Description of the Related Art A pile burying device disclosed in Japanese Patent Application Laid-Open No. Hei 7-11643 has been proposed. Specifically, a drill container, a rod container device on which a pile is set, and a drill that moves up and down along the boom to extend the excavation rod to excavate a hole in the ground, and extend the pile to bury the excavated hole. A pile burying device including a head and display means for displaying the length and number of piles.

[0003] An excavator for a pile hole shown in Japanese Utility Model Laid-Open No. 4-46134 has been proposed. Specifically, an auger machine that moves up and down along the arm, a measurement sheave provided on the arm,
A winder, and a measuring wire wound on the winder and connected to the auger machine via the measuring sheave, the measuring wire is pulled out as the auger machine descends, the measuring sheave rotates, and as the measuring sheave rotates, It is a pile hole excavator that knows the amount of unwinding of the measurement wire, that is, the depth of the pile hole, by measuring pulses generated at regular intervals.

[0004]

The pile burying device described above is
It detects long or short piles and displays the number of long and short piles, so you can know the depth of the piles. However, pile length variation is large due to pile length tolerance, pile head height, etc., so the pile depth based on the number of long piles and the number of short piles is inaccurate, and it is necessary to know the exact pile depth. Can not. Further, since a sensor for detecting a long pile and a sensor for detecting a short pile are provided, the number of sensors is large.

In the above-described pile hole excavator, a measurement wire is stretched over a winder, a measurement sheave, and an auger machine, and the measurement wire is an obstacle. The measurement wire expands and contracts due to temperature changes, causing errors in the detected pile hole depth.

Therefore, an object of the present invention is to provide a pile burying device capable of solving the above-mentioned problems.

[0007]

Means for Solving the Problems and Functions / Effects A first aspect of the present invention is a lifting / lowering body 15, 16 to which a pile, an auger, and an auger rod are detachably connected, and a lifting / lowering operation of the lifting / lowering body 15, 16. Elevating motors 22, 42, encoders 32, 48 provided in a drive unit for elevating and lowering the elevating bodies 15, 16 by the elevating motors 22, 42, and a pile or auger based on the pulses of the encoders 32, 48. A controller 50 for calculating the depth and a display device 62 for displaying the calculated depth of the pile or auger are provided.
A pile embedding apparatus characterized in that the pile or auger depth is obtained by integrating 2,48 pulses.

According to the first aspect of the present invention, the first pile or auger is separated from the first pile or the auger when the first pile is buried or a hole is excavated by lowering the first and second elevating bodies 15 and 16, and the first pile or the auger is separated.
The second pile is connected to the first pile or the auger rod, and the second pile is further lowered after connecting the second pile or the auger rod to the first pile or the auger rod. By doing so, the second pile is buried or excavated. By repeating this operation, a plurality of piles can be added and buried, or a plurality of auger rods can be added to drill a hole.

As described above, when burying or excavating a hole, the encoder 32,
Since 48 pulses are integrated and the depth of the pile or auger is used, when excavating a hole by adding a plurality of piles and burying or adding a plurality of auger rods, the pile length tolerance or the auger rod length tolerance Even if there is a large variation in the length of the pile or auger rod due to the height of the pile head or the height of the protruding part of the auger rod, the depth of the buried pile or auger can be accurately calculated, and the calculated depth can be calculated. It is displayed on the display device 62.

Further, since the encoders 32, 48 are provided in a drive unit for raising and lowering the lifting bodies 15, 16 by the lifting motors 22, 42, the encoders 32, 48 correspond to the rotation of the lifting motors 22, 42. Outputs pulses accurately.

When these are combined, it is possible to accurately know the depth of a buried pile or a hole-digged auger when a plurality of piles are added and buried or a plurality of auger rods are added and a hole is drilled. . Therefore, the pile can be buried accurately at the planned depth, and the operation is easy.

In order to know the depth, the encoder 32,
48 is sufficient, the number of parts is small, the cost is low, the wires for measurement are not required, and the encoders 32 and 48 do not hinder the work.

According to a second aspect of the present invention, a lifting member 15, 16 to which a pile, an auger, and an auger rod are detachably connected, and lifting motors 22, 4 for lifting and lowering the lifting members 15, 16 are provided.
2 and the elevating body 1 by the elevating motors 22 and 42.
Encoder 3 provided in a drive unit that moves up and down 5 and 16
A controller 50 for calculating the depth of the pile or auger based on the pulses of the encoders 32 and 48;
The controller 50 is provided with a display device 62 for displaying the calculated pile or auger depth. The controller 50 adds the pulses of the encoders 32 and 48 when the elevating bodies 15 and 16 move down, and adds the pulses of the encoders 32 and 48 when moving up. The function to calculate the depth by the pulse accumulated value of the encoder based on the value subtracted by the pulse, and when digging the second and subsequent piles using the auger rod or when digging a hole, the depth at the previous pulse accumulated value of the encoder is used. A pile burying device having a function of adding a depth based on a pulse integrated value of the encoder to a maximum value to obtain a pile or auger depth.

According to the second aspect, the operation of the first aspect is as follows.
In addition to the effects, the following functions and effects are further exhibited. Elevating body 15, 1 descending when burying a pile or excavating a hole
6 and then raise it by a slight stroke, then lower it again to bury or dig a hole, so that even if the pile is buried or a hole is drilled smoothly, the depth of the pile or auger can be reduced. Since the value changes in accordance with the operation of the elevating bodies 15 and 16, the display shows the operation status and the work is easy.

According to a third aspect of the present invention, lifting members 15, 16 to which a pile, an auger, and an auger rod are detachably connected, and lifting motors 22, 4 for moving the lifting members 15, 16 up and down.
2 and the elevating body 1 by the elevating motors 22 and 42.
Encoder 3 provided in a drive unit that moves up and down 5 and 16
A controller 50 for calculating the depth of the pile or auger based on the pulses of the encoders 32 and 48;
The controller 50 is provided with a display device 62 for displaying the calculated pile or auger depth. The controller 50 adds the pulses of the encoders 32 and 48 when the elevating bodies 15 and 16 move down, and adds the pulses of the encoders 32 and 48 when moving up. The function of calculating the depth by the pulse integrated value of the encoder based on the value subtracted by the pulse, and when first digging the first pile using a buried or auger, the maximum value at the calculated depth is determined by the pile or auger. When burying or digging a second pile or later using auger rods, add the depth by the pulse integrated value of the encoder to the maximum value of the depth by the pulse integrated value of the previous encoder. Pile piles having a function of setting the provisional depth and a function of detecting the maximum value at the provisional depth and setting the depth as a pile or auger. It is a device.

According to the third aspect, in addition to the actions and effects of the first and second aspects, the following actions and effects are further exhibited. Since the pile or auger rod is added, the depth of the pile or auger actually buried or excavated can be accurately and continuously known even when the elevating bodies 15 and 16 are raised.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, an apparatus main body 1 has a lower body 3 provided with a crawler-type traveling body 2, and an upper part which is pivotally attached to the lower body 3 by a turning mechanism 4. Body 5
The main body 1 is self-propelled. The apparatus main body 1 may be of a towing type, a portable type, or a stationary type. The traveling body 2 may be a wheel type. A support member 6 is attached to a bracket 5a of the upper body 5 with a pin 7 so as to be substantially horizontal toward the front. A leader attachment member 8 is attached to the support member 6 by pins 9 so as to be vertically swingable. The swinging cylinder 10 extends between the pin 11 and the pin 12 over the leader attaching member 8 and the supporting member 6.
It is connected with. By expanding and contracting the swing cylinder 10, the leader mounting member 8 swings about the pin 9 between the standing posture and the falling posture.

The leader (post) 1 is attached to the leader mounting member 8.
3 is attached so as to be movable in the longitudinal direction. This reader 1
The moving cylinder 14 is mounted over the 3 and the reader mounting member 8. Because of this, the swing cylinder 1
By expanding and contracting 0, the leader 13 swings together with the leader mounting member 8 in the standing posture and the falling posture. When the moving cylinder 14 is extended and contracted, the leader 13 moves in the longitudinal direction along the leader mounting member 8.

An elevating body 15 for a press-fitting machine is mounted on one left and right side of the reader 13 so as to be movable in the longitudinal direction. An auger elevating body 16 is attached to the left and right sides of the reader 13 so as to be movable in the longitudinal direction.

As shown in FIGS. 3 to 6, the lifting body 15 for the press-fitting machine has a substantially rectangular parallelepiped box shape, and a pair of front and rear guide rollers 15a mounted on the left and right sides of the reader 13 are provided on the left and right sides of the reader 13. The lifting / lowering body 15 protrudes into the guide recess 13 a and can reciprocate in the longitudinal direction along the reader 13. A rotating motor 20 such as a hydraulic motor or an electric motor is mounted near the lower portion of the elevating body 15. This rotation motor 20
The rotation shaft 21 is driven to rotate.

An elevating motor 22 such as a hydraulic motor or an electric motor is mounted on the rear surface of the elevating body 15 near the upper part.
As shown in FIG. 6, a drive gear 24 is mounted on a drive shaft 23 connected to an output shaft of the elevating motor 22. As shown in FIG. 4, a first shaft 25, a second shaft 26, and a third shaft 27 are attached to the elevating body 15 in the front-rear direction. As shown in FIG. 6, a driving sprocket 28 is rotatably provided on the first shaft 25, and a driven sprocket 29 is rotatably provided on the second shaft 26 and the third shaft 27, respectively.
A drive gear 24 attached to the drive shaft 23 meshes with a driven gear 30 attached to the drive sprocket 28.
As a result, the drive sprocket 28 rotates forward and backward by driving the lift motor 22 forward and backward.

A chain 31 provided on the leader 13 is wound around the driving sprocket 28 and the driven sprocket 29, respectively. When the driving sprocket 28 rotates forward and backward, the elevating body 15 reciprocates along the leader 13. A rotary shaft 32 of an encoder 32 for a press-fitting machine is mounted on the drive shaft 23.
is connected, and the rotation shaft 32a of the encoder 32 rotates forward and reverse by the forward and reverse rotation of the drive shaft 23, and outputs a pulse signal. Because of this, the encoder 32 for the press-fitting machine is used.
The moving distance of the lifting body 15 for a press-fitting machine can be measured by counting the pulse signals of

The lifting body 16 for the auger is shown in FIGS.
As shown in the figure, the guide rollers 16a mounted on the front and rear sides of the box are projecting into a pair of front and rear guide recesses 13b provided on the right side of the reader 13, and the elevating body 16 extends along the leader 13 in the longitudinal direction. Can be reciprocated. A rotating motor 40 such as a hydraulic motor or an electric motor is mounted near the lower portion of the elevating body 16. This rotation motor 4
At 0, the rotating shaft 41 is driven to rotate.

A lifting motor 42 such as a hydraulic motor or an electric motor is mounted on the rear surface of the lifting body 16 near the upper part.
As shown in FIG. 10, a driving sprocket 44 is mounted on a driving shaft 43 connected to an output shaft of the lifting motor 42. As shown in FIG. 8, a first shaft 45 and a second shaft 46 are attached to the elevating body 16 in the front-rear direction. 1st axis 4
5. A driven sprocket 47 is rotatably provided on the second shaft 46, respectively. As a result, the drive sprocket 44 rotates forward and backward by driving the lift motor 42 forward and backward.

The above-described chain 31 provided on the leader 13 is wound around the driving sprocket 44 and the driven sprocket 47, respectively. When the driving sprocket 44 rotates forward and backward, the lifting body 16 reciprocates along the leader 13. A rotation shaft 48a of an auger encoder 48 is connected to the drive shaft 43, and the forward / reverse rotation of the drive shaft 43 causes the rotation shaft 48a of the encoder 48 to rotate forward / reverse to output a pulse signal. Because of this, the moving distance of the auger lift 16 can be measured by counting the pulse signals of the auger encoder 48.

The encoder 32 is a driving sprocket 2
8 or the driven sprocket 29. That is, the encoder 32 is moved by the lifting motor 22 by the lifting body 1.
5 may be provided in a drive unit that moves up and down. The encoder 4
8 may be connected to a driving sprocket 44 or a driven sprocket 47. That is, the encoder 48 may be provided in a drive unit that moves the elevating body 16 up and down by the elevating motor 42.

As shown in FIGS. 11 and 12, a rod 33 for press-fitting a pile is attached to the rotating shaft 21 of the lifting body 15 for the press-fitting machine, whereby the rod 33 reciprocates (raises and lowers) along the leader 13. It constitutes a press-fitting machine. 11 and 13
As shown in the figure, the rotating shaft 41 of the auger elevating body 16
An auger 34 is detachably attached to the auger, thereby constituting an auger that reciprocates (elevates) along the reader 13. An auger rod (not shown) is detachably attached to the rotating shaft 41.

The chain 31 is, as shown in FIG.
Sprocket 3 attached to the upper right and left middle part of leader 13
5 is wound around the middle part in the longitudinal direction, and both ends are the leader 1
3 hangs to the left and right. One end of the chain 31 is wound around an upper driven sprocket 29, a driving sprocket 28, and a lower driven sprocket 29 provided on the elevating body 15 for the press-fitting machine, and then a load cell 36 is provided on the lower left side of the leader 13 via a load cell 36. Connected. The chain 3
The other end of 1 is wound around an upper driven sprocket 47, a driving sprocket 44, and a lower driven sprocket 47 provided on the auger elevating body 16, and then connected to the lower right side of the leader 13.

Because of this, the driving sprocket 2
When the lifting and lowering body 15 for the press-fitting machine is pressed downward along the leader 13 by rotating the
An upward force acts on one end of the. This upward force is detected by the load cell 36. Therefore, load cell 3
6, the pushing force, which is the force pushing the lifting body 15 downward, can be measured.

Next, the outline of the operation of burying a pile will be described. (Excavation operation of pile burial hole) The auger rotation motor 40 is driven to rotate the auger 34. The lifting / lowering motor 16 is driven to lower the auger lifting / lowering body 16 along the reader 13, and a hole is excavated by the rotating auger 34. When the auger elevating body 16 is lowered to a predetermined lower position, the rotating shaft 41
And the auger 34 are separated. The elevating motor 16 is driven by driving the elevating motor 42 in the opposite direction to that described above. Lifting body 16
Is raised to a predetermined upper position, the rotating shaft 41 and the auger 34 are connected by the auger rod, and the auger 3 is
Lower while rotating 4. The above operation is repeated, and the auger rods are sequentially added to excavate the pile burial hole to a predetermined depth.

(Pile Embedding Operation) The pile is connected to a rod 33 connected to the rotary shaft 21 of the press-fitting machine, and the rotation motor 20 is driven to rotate the pile. At the same time, the lifting / lowering body 15 for the press-fitting machine is driven down by driving the lifting / lowering motor 22 along the leader 13, and when the burying start position is reached, the pile burial excavated while rotating the pile or without rotating the pile. Push into the holes sequentially. When the elevating body 15 for the press-fitting machine is lowered to a predetermined lower position, the rod 3
Separate the pile from 3 The elevating motor 22 is driven in the direction opposite to the above, and the elevating body 15 is raised. When the elevating body 15 rises to a predetermined upper position, the second pile is connected to the rod 33, and the elevating body 15 is lowered to connect the second pile and the first pile. Thereafter, the rod 33 descends while rotating the rod 33 as described above. By repeating the above operation, piles are sequentially added and buried to a predetermined depth.

Next, an apparatus for calculating and displaying the burial depth of the pile (pile depth) will be described. As shown in FIG.
The detection signal (pulse) of the press-fitting machine encoder 32 is input to a controller (arithmetic processing device) 50. The controller 50 includes a calculation unit (counter) 51 and a nonvolatile memory 52. The encoder 32 outputs two pulses of phases A and B having different phases. When the elevating motor 22 is driven in the forward direction (when the elevating body 15 is lowered)
In the figure, the phase of the A-phase pulse is ahead of the phase of the B-phase pulse by 90 degrees. When the elevating motor 22 is driven in reverse rotation (when the elevating body 15 moves up), the phase of the A-phase pulse is delayed by 90 degrees from the phase B pulse. Controller 50 is A
It is determined whether the lifting / lowering body 15 is lowered or raised based on the phases of the phase and B-phase pulses. When the elevating body 15 is lowered, the input pulse is added (counter increased) by the arithmetic unit 51 and is sequentially stored in the nonvolatile memory 52. When the elevating body 15 is ascending, the value stored by the input pulse is subtracted (counter decrement) by the arithmetic unit 51.

The detection signal of the load cell 36 is supplied to the amplifier 5
After that, it is input to the controller 50. The controller 50 has the first pressure sensor 54 to output the rotation motor 20.
And the hydraulic pressure of the reverse rotation port of the rotation motor 20 from the second pressure sensor 55. That is, the rotation motor 20 is a hydraulic motor. The controller 50 is provided with an input device 56, for example, a depth reset signal from a depth reset switch 57, and a print switch 5.
8, a print signal, a pile number input means 59, a start signal from a starter switch (power switch) 60, a signal from a final depth switch 61, and the like are input.

A display device 62 is connected to the controller 50, and displays the depth of the pile, the elevating speed, the rotational torque, the pushing force, and the like. For example, a pile depth calculated as described later is displayed. Further, it displays the elevating speed of the elevating body 15 calculated based on the time interval of the pulses output from the encoder 32 (the number of pulses output per unit time). First
The rotation torque (rotational torque of the pile) of the rotation motor 20 calculated based on the difference between the oil pressure of the pressure sensor 54 and the oil pressure of the second pressure sensor 55 is displayed. The pushing force (push pushing force) of the lifting body 15 calculated based on the input signal of the load cell 36 is displayed. Further, it is also possible to confirm the completion of the pile burial and the geology based on the above-described change in the elevation speed, change in the rotational torque, and change in the pushing force.

A printer 63 is connected to the controller 50, and prints out the value displayed on the above-mentioned display device 62 by a print signal from a print switch 58. The input device 56 and the display device 62 may be integrated and connected to the controller 50, and the printer 63 may be connected thereto. The display device 62 described above is not limited to a display device, and may be a voice output, a printout output, a data output, or the like.

Next, a description will be given of a first embodiment of the operation of calculating and displaying the depth of a pile (hereinafter, simply referred to as the depth) when a plurality of piles are buried together. Starter switch 60
Turn ON. The first pile is connected to the rod 33 of the elevating body 15 for the press-fitting machine. The lifting / lowering body 22 is driven by driving the lifting / lowering motor 22.
5 and comes to the pile burying start position, the number of piles (1) is inputted from the input means 59, and then the depth reset switch 5
7 is turned ON. With this ON signal, the depth stored in the nonvolatile memory 52 of the controller 50 is set to zero (reset).

The elevating motor 22 is driven to move the elevating body 1
Go down 5 and bury the pile. If necessary, the rotation motor 20 may be driven to rotate the pile. At this time, the controller 50 determines that the lifting / lowering body is descending based on the phases of the A-phase and B-phase pulses of the encoder 32, adds the pulse input by the calculation unit 51, and adds the pulse integrated value Pn of this encoder to one pulse of the encoder. The depth (Pn × K) is calculated based on the depth change amount K per hit. This depth is stored in the non-volatile memory 52.

When it is confirmed that the first pile has been buried to a predetermined depth (for example, visually checked by an operator), the rod 33 and the pile are separated, and the elevating body 15 is moved to a predetermined upper position (when the second pile is raised and lowered). (A height that can be connected to the rod 33 of the body 15). At this time, the controller 50
Phase, the phase of the B-phase pulse, it is determined that the lifting body rises,
The depth of the first pile is not changed without adding or subtracting (accumulating) the input encoder pulse. After connecting the second pile, the lifting body 15 is lowered, and the upper end of the first pile and
Connect the lower end of the pile. Thereafter, the number of piles (2) is inputted from the input means 59. Until the number of piles (2) is input, the depth of the first pile is not changed without adding or subtracting (accumulating) the pulse of the encoder. After this, the lifting body 15
Is further lowered and buried while pushing the first pile with the second pile. When the number of piles (2) is input, the controller 50 calculates the depth (Pn × K) by accumulating the pulses of the encoder in the calculation unit 51, adds the increase in the depth to the previous depth, and corrects the depth. Depth. This correct depth is stored in non-volatile memory 52. 3rd, 4
When the second pile is buried, the operation is the same as that when the second pile is buried.

When the number of piles to be buried has been buried, an ON signal of the final depth switch 61 is input to the controller 50. The controller 50 (the non-volatile memory 52) stores the instantaneous depth, rotational torque, and pushing force, and displays the stored data on the display device 62. When the print switch 58 is turned on, the displayed data is printed by the printer 63 and printed out. Apart from the above, it is possible to display the depth, the elevating speed, the rotational torque, and the pushing force for each predetermined depth, and also print and print out. Further, the depth may be continuously displayed on the display device 62.

Next, a second embodiment in which a plurality of piles are added to calculate and display the depth of the piles will be described. Note that a detailed description of the same operation as in the first embodiment will be omitted.
As shown in FIG. 15A, the first pile 70-1 connected to the elevating body 15 is placed at the burying start position (for example, the lower end is the ground 71).
The depth reset switch 57 is ON when
I do. Thereby, the depth A, the provisional depth B, and the depth C based on the encoder pulse integrated value Pn of the nonvolatile memory 52 of the controller 50 and the encoder pulse integrated value described later become zero. The previous maximum depth coefficient Z described later also becomes zero. The number of piles (1) is input to the controller 50 by the input means 59. Or depth reset switch 57 ON
At times, the number of piles (1) may be automatically set.

As shown in FIG. 15B, the elevating body 15 is lowered, and the first pile 70-1 is sequentially buried to a predetermined depth shown in FIG. 15C. At this time, the pulses of the encoder 32 are added, and the depth A (depth indicated by a thin solid line in FIG. 16) based on the pulse integrated value of the encoder is obtained by the pulse integrated value Pn and the depth change amount K per pulse of the encoder 32 described above. The calculation is performed and stored in the nonvolatile memory 52. A provisional depth B obtained by adding the depth A and the previous maximum depth coefficient Z (FIG. 16
Is calculated, and stored in the nonvolatile memory 52. In this case, the provisional depth B coincides with the depth A since the previous maximum depth coefficient Z is zero.

At the time of the above operation, the controller 50 always sets the maximum value to the depth C (FIG. 1) even if the provisional depth B changes.
6 (the depth of a thick solid line). For example, while the first pile is being buried,
In the case where 5 is raised once and then lowered again to be buried smoothly, the above-mentioned provisional depth B decreases, but the maximum value before the reduction is defined as the depth C.

As shown in FIG. 15C, the first pile 7
When embedding (pushing) of 0-1 is completed, it is separated from the elevating body 15, and the elevating body 15 is raised to a predetermined upper position as shown in FIG. At this time, the pulse integrated value Pn added so far is subtracted by the pulse of the encoder 32,
The aforementioned depth A and the provisional depth B decrease. At this time, the maximum value immediately before the above-described provisional depth B is decreased is detected, and the depth C (the depth of the thick solid line in FIG. 16) is made constant at that value.

As shown in FIG. 15 (e), the second pile 70-2 is connected to the lifting / lowering body 15, and the lifting / lowering body 15 is moved down to lower the second pile 70- as shown in FIG. 15 (f). 1 at the bottom of 2
Connected to the upper end of the pile 70-1.

The input means 59 inputs the number of piles (2) to the controller 50. At this point, the depth A based on the pulse integrated value of the encoder is subtracted from the maximum value of the depth C so far to obtain the previous maximum depth coefficient Z. Z = C (the number of piles is 2
At the moment when the number of piles is set) -A (A at the moment when the number of piles is set to 2)
The value of the). As shown in FIG. 16, when the setting of the second pile is completed, the head of the first pile projects slightly above the ground 71.
The more prominent dimension S becomes a negative value, and the previous maximum depth coefficient Z becomes a value larger by S than the previous maximum depth. If the first pile 70-1 is buried to the ground 71, the previous maximum depth coefficient Z becomes the same as the previous maximum depth.

As shown in FIG. 15 (f) to FIG. 15 (g), the elevating body 15 is lowered to move together with the second pile 70-2.
The first pile 70-1 is buried. At this time, the previous maximum depth coefficient Z is added to the depth A based on the pulse accumulated value of the encoder calculated by the lowering of the elevating body 15 as described above, and a provisional depth B (B = A + Z) is obtained. That is, the depth A based on the integrated pulse value of the encoder when the second pile 70-2 is started to be buried is a minus value of the dimension S as described above, and the head of the first pile 70-1 reaches the ground 71. The depth A based on the pulse accumulated value of the encoder when the dimension S is embedded is a negative value, and the depth A based on the pulse accumulated value of the encoder when the dimension S is embedded is zero. Therefore, by calculating the provisional depth B by A + Z, the dimension S at the previous maximum depth coefficient Z is cancelled, and a correct provisional depth B is obtained. The maximum value at the provisional depth B is defined as the depth C. Since the depth C is the actual depth of the buried pile, the actual depth can be accurately and continuously known. FIG. 17 is a flowchart showing the above-described depth calculation operation.

The above-mentioned depths A, B, and C are stored in the nonvolatile memory 5.
For example, the value when the power is turned off in FIG. 16 is continuously stored, and the depth can be calculated based on the depths A, B, and C stored when the power is turned on again in FIG.

In the second embodiment, the depth C is detected and displayed. However, the depth B is detected without detecting the depth C.
May be displayed.

When a hole is excavated by adding an auger rod to the auger described above, the pulse of the encoder 48 of the elevating motor 42 of the elevating body 16 is used to obtain the depth of the auger similarly to the depth of the pile. Can be calculated and displayed. In addition, a single elevating body is used, and an auger is first drilled into the elevating body by connecting an auger rod with an auger rod. Thereafter, the auger and the auger rod may be removed, and a pile may be added to the elevating body so as to be buried. In this case, the depth of the auger and the depth of the stake can be calculated and displayed by the controller 50 and the display device 62 by the pulse of the common encoder.

[Brief description of the drawings]

FIG. 1 is a left side view of a pile burying device.

FIG. 2 is a plan view of the pile burying device.

FIG. 3 is a left side view of an elevating body for the press-fitting machine.

FIG. 4 is a rear view of the elevating body for the press-fitting machine.

FIG. 5 is a plan view of a lifting body for a press-fitting machine.

FIG. 6 is a sectional view taken along line AA of FIG. 4;

FIG. 7 is a right side view of the elevating body for the auger.

FIG. 8 is a rear view of the elevating body for the auger.

FIG. 9 is a plan view of an elevating body for an auger.

FIG. 10 is a sectional view taken along line BB of FIG. 8;

FIG. 11 is a front view of a leader portion.

FIG. 12 is a left side view of a leader portion.

FIG. 13 is a right side view of a leader portion.

FIG. 14 is a control circuit diagram for calculating and displaying depth.

FIG. 15 is an explanatory diagram of a burying operation of a pile.

FIG. 16 is a chart showing a relationship between depth and time.

FIG. 17 is a flowchart of a depth calculation operation.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Device main body, 13 ... Leader, 15 ... Elevating body for press-fitting machines, 16 ... Elevating body for auger, 20 ... Motor for rotation, 2
2 ... Elevating motor, 28 ... Drive sprocket, 29 ... Driving sprocket, 31 ... Chain, 32 ... Encoder,
34 auger, 36 load cell, 40 motor for rotation, 42 motor for lifting and lowering, 44 driving sprocket, 4
7: driven sprocket, 48: encoder, 50: controller, 51: arithmetic unit, 52: nonvolatile memory, 62
... Display device, 63 ... Printer, 70-1 ... First pile,
70-2: Second pile.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Satoru Koyanagi 3-20-1 Nakase, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture F-term (reference) 2D050 CA01 CB03 CB23 FF04

Claims (3)

[Claims] An elevator (15), (16) to which a pile or auger and an auger rod are detachably connected, and an elevator motor (2) for lifting and lowering the elevators (15), (16).
2), (42) and the lifting motors (22), (4)
2) Encoders (32) and (48) provided in a drive unit for raising and lowering the elevating bodies (15) and (16), and a pile or auger depth based on the pulses of the encoders (32) and (48). (50) and a display device (62) for displaying the calculated pile or auger depth
The controller (50) includes a lifting body (15), (16)
A pile or auger depth by integrating the pulses of the encoders (32) and (48) when the angle falls. 2. A lifting / lowering body (15), (16) to which a pile or an auger and an auger rod are detachably connected, and a lifting / lowering motor (2) for raising / lowering the lifting / lowering body (15), (16).
2), (42) and the lifting motors (22), (4)
2) Encoders (32) and (48) provided in a drive unit for raising and lowering the elevating bodies (15) and (16), and a pile or auger depth based on the pulses of the encoders (32) and (48). (50) and a display device (62) for displaying the calculated pile or auger depth
The controller (50) includes an elevating body (15), (1)
6) add the pulses of the encoders (32) and (48) at the time of falling, and add the pulses of the encoders (32) and (4) at the time of ascending.
8) The function to calculate the depth based on the pulse accumulated value of the encoder based on the value subtracted by the pulse, and the pulse accumulated value of the encoder before the second pile is buried or the hole is excavated using the auger rod. A pile embedding device having a function of adding a depth based on a pulse integration value of the encoder to a maximum value at a depth according to the above, to obtain a pile or auger depth. 3. A lift (15), (16) to which a stake or an auger and an auger rod are detachably connected, and a lift motor (2) for raising and lowering the lifts (15), (16).
2), (42) and the lifting motors (22), (4)
2) Encoders (32) and (48) provided in a drive unit for raising and lowering the elevating bodies (15) and (16), and a pile or auger depth based on the pulses of the encoders (32) and (48). (50) and a display device (62) for displaying the calculated pile or auger depth
The controller (50) includes an elevating body (15), (1)
6) add the pulses of the encoders (32) and (48) at the time of falling, and add the pulses of the encoders (32) and (4) at the time of ascending.
8) The function of calculating the depth by the pulse integrated value of the encoder based on the value subtracted by the pulse of the pulse. When the first pile is buried or the first hole is excavated using the auger, the maximum value at the calculated depth is piled. Or the function of setting the depth of the auger, and when burying the second and subsequent piles or excavating holes using the auger rod, the depth at the previous depth by the pulse integrated value of the encoder to the depth by the pulse integrated value of the encoder A pile embedding device, comprising: a function of adding a temporary depth to the pile and a function of detecting a maximum value at the temporary depth and setting the depth of the pile or auger.