JPH0819340A - Pile driving equipment - Google Patents

Abstract

(57) [Summary] [Structure] An artificial operation tool 42 for raising and lowering the driving tool 41 with a hydraulic cylinder 47, a first arm 43 for detecting whether the driving tool 41 is at the bottom dead center, or not. A second arm 44 for detecting whether or not it is at the top dead center, and when the first arm 43 is activated by the lowering of the driving tool 41 by the human operation tool 42, the driving tool 41 moves up and the driving tool 41 moves to the second position. When it hits the arm 44, the driving tool 41 is stopped, and the manipulator 42 is returned to its original raised position so that the control valve 49
A traveling linking means 45 is provided for mechanically linking the manual operation tool 42, the first arm 43, and the second arm 44 with the first to third wires 50, 51, 52 and the like. [Effect] By switching the manual operation tool, the transmission mechanism for moving the driving tool up and down with a hydraulic device and the automation of a series of driving operations with a mechanical linkage mechanism will ensure a reliable and smooth driving operation by simplifying the structure of the driving mechanism. It was possible to provide a preferable pile driving device that can be economically and rationally operated with a small amount of error by a simple one-touch operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving tool in which a single pile sent out from a pile mounting portion for supporting a large number of piles side by side is driven up and down between an upper standby position and a lower driving position. The present invention relates to a pile driving device configured to be driven into the ground.

[0002]

2. Description of the Related Art As the pile driving device, there is Japanese Patent Application No. 5-308805 filed previously, which is directed toward a driving standby position of a driving tool for lifting and lowering a pile mounted portion.
It has the advantage of being able to reliably send out books one by one.

[0003]

In the pile driving device according to the above-mentioned proposed technique, a screw feeding mechanism by screwing a male screw member and a nut member is used to drive and lift the pile driving tool. The rotational power of the male screw member is a structure in which the rotational power is input from the engine of the traveling machine using a transmission means including a large number of belt mechanisms, shafts, gear mechanisms, and clutches for intermittent rotation. It was economically constructed by making effective use of it. However, since the drive source of the traveling machine body and the screw feed mechanism are separated from each other, the transmission means has a complicated transmission structure with a very large number of parts, which makes it difficult to obtain the desired economical efficiency or backlash of the transmission system. It seems that there is room for improvement because there is a disadvantage that the accumulation and transmission loss of the battery are not negligible and it is difficult to set up for accurate operation. An object of the present invention is to eliminate the above-mentioned disadvantages by simplifying the transmission structure for raising and lowering the driving tool and devising it so that a more reliable operation can be obtained.

[0004]

A feature of the present invention is to provide a pile mounting portion for supporting a large number of piles side by side, and to provide a single pile sent out from this pile mounting portion at an upper standby position and a lower pile position. In a pile driving device equipped with a driving mechanism that can be driven up and down depending on the driving position, the driving mechanism is composed of a hydraulic cylinder that drives and lowers the driving tool. A three-position switching type control valve, an artificial operating tool having two switching positions, a first position for switching the control valve to a lowered position and a second position for switching the control valve to an elevated position, and a driving tool. A lower limit detection member that detects whether or not the driving tool is present at the driving position by abutment, and an upper limit detection member that detects whether or not the driving tool is at the standby position by abutment with the driving tool. , A dead point mechanism for maintaining the urging of the manual operation tool in the first and second positions by the first elastic member, a second elastic member for urging the control valve to return to the raised position, the manual operation tool and the control valve A first interlocking member for interlocking and connecting with each other, a second interlocking member for interlockingly connecting the upper limit detection member and the control valve, and a third interlocking member for interlockingly connecting the lower limit detection member and the control valve are provided, respectively, and are manually operated. When the lower limit detection member is operated by the downward movement of the driving tool accompanying the switching of the tool to the first position, the control valve is moved to the raised position and the artificial operation tool is moved against the biasing force of the first elastic member. When the upper limit detection member is operated by the upward movement of the driving tool, the control valve is switched to the neutral position located between the lowered position and the raised position, and the manual operation tool is operated. 1st to 3rd interlocking so as to maintain the second position Wherein the are provided with a driving linkage means for mechanically linking the control valve and the lower limit detection member and the upper sensing member a manual control device by wood.

[0005]

With the construction, since the driving system is composed of the hydraulic cylinder, the dedicated parts such as the hydraulic pump such as the hydraulic pump and the hydraulic oil tank, the piping and the hydraulic hose are required separately. As the movable part, the number of components such as the hydraulic cylinder and the interlocking mechanism of the hydraulic cylinder and the driving tool are much smaller than the conventional ones, and the structure is rather simplified. In addition, since the number of movable parts is reduced, the accumulation of errors due to the backlash of the transmission system is clearly reduced, and the setting of the transmission system is facilitated.

As in the configuration, upper and lower limit detection members that operate when the driving tool reaches the standby position and the driving position are provided respectively, and the control valve of the hydraulic cylinder and the artificial operating tool thereof are provided as first to third. By interlocking the machines with the interlocking member, the interlocking operation can be performed as in the configuration. That is, when the manual operation tool is operated to the first position, the control valve is switched to the lowered position, the driving tool descends to the lowermost end to drive the pile, and the lower limit detection member operates to move the control valve to the raised position. , And switch the manual operation tool to the second position, respectively. When the driving tool ascends to return to the uppermost standby position as the control valve is switched to the raised position, the upper limit detection member operates and the control valve is neutralized to stop the driving tool at the standby position. The manipulator is still maintained in the second position.

That is, a series of pile driving operations can be performed only by operating the manual operation tool to the first position, and the original state is automatically established, that is, the driving tool is in the standby position and the control valve is in the neutral position. In addition, since the manual operation tool is returned to the state where the manual operation tool is located at the second position, the operator only needs to perform the one-touch operation, and the return operation is not necessary. In addition, since the series of control means for that purpose is composed of the driving linking means which is a mechanical linking mechanism composed of three interlocking members and the like, it is cheaper than, for example, electrical means and malfunctions. The risk can be reduced.

[0008]

As a result, by devising a power transmission mechanism for lifting and lowering the driving tool by a hydraulic device and automating a series of driving operations by a mechanical linkage mechanism, a reliable and smooth driving operation can be achieved by simplifying the structure of the driving mechanism. One-touch operation by simply switching between man-made operation tools reduces error movement, and
It was possible to provide a preferable pile driving device that can be economically and rationally performed.

[0009]

Embodiments will be described below with reference to the drawings. FIG.
1 shows a work vehicle in which the stake driving device 2 is mounted on the walk-behind traveling vehicle body 1. The traveling machine body 1 includes a pair of left and right traveling wheels 3,
The engine 6 is mounted on and supported by the engine frame 5 mounted in a cantilever manner with respect to the transmission case 4 which also serves as a frame and which supports 3 and the power of the engine 6 also serves as a belt tension type main clutch C. The power transmission of the engine 6 is transmitted to the traveling wheels 3 and 3 via the mechanism 7, the hydrostatic continuously variable transmission 8 and the transmission case 4, and the power of the engine 6 is driven by the belt transmission mechanism 9 and the drawings. The work device drive transmission system is configured to directly supply the power take-out shaft (not shown) for the hydraulic pump of the hydraulic driving mechanism described later via the work clutch.

A steering handle 11 is provided so as to extend obliquely upward from the upper portion of the mission case 4.
While squeezing 1 is operated, the machine body is run toward the handle extension direction side (right side in the drawing) to perform the pile driving work. The steering handle 11 is configured to be switchable between a posture along the traveling direction of the machine body and a posture tilted obliquely rearward. The pile driving device 2 carries out the work of driving the inverted U-shaped piles K for tensioning the multi-sheet like a tunnel in the field at predetermined intervals [about 1 meter] to the ground.

The frame 12 in the pile driving device 2 is shown in FIG.
As shown in FIG. 5, it is formed wider than the traveling body 1,
It is fixedly connected to and supported by a working device connecting portion 13 provided on the engine frame 5 and the mission case 4. Since the traveling wheels 3 and 3 are located on the left and right outer sides of the frame body 12 [the left and right outer sides of the pile row], the wheel drive shaft 14 of the transmission case 4 and the axle 1 via the extension shaft 15.
6, the extension shafts 15 are supported by two pillow blocks 17 on each of the left and right sides in order to prevent the extension shafts 15 from bending and deforming due to the load of the working device. The end of the frame 12 on the side opposite to the machine body connecting portion is grounded and supported by a pair of left and right caster wheels 18 whose height is adjustable. The pile driving device 2 includes a pile mounting portion 19 for supporting a large number of piles in an inclined posture, a feeding mechanism 20 for feeding the piles one by one from the pile mounting portion 19, and a pile P that has been fed.
It is equipped with a driving mechanism 21 for driving the
Supported by.

As shown in FIGS. 2 and 9, the pile mounting portion 19 has four support rails 22a and 22b in an inclined posture along the longitudinal direction of the machine body and in a lateral direction in a state where the pile K is bent. And a plurality of piles K are arranged and supported in parallel on each of the support rails 22a and 22b, and the upper side of each pile row is held and supported by three holding rods 23 to prevent lifting. It is configured to do. The inclination angle of the support rails 22a and 22b is set to an angle such that the support rails 22a and 22b slide down due to their own weight [inclination of 25 to 30 degrees from the horizontal posture]. The presser bar 23 has a connecting member 23a on both front and rear sides.
It is integrally connected by 23b, and is pivotally supported on the frame body 12 at its lower end portion so as to be rotatable around a horizontal axis X1 in a holding posture and an upward opening posture.

Each of the piles K is formed by bending a round bar into a substantially inverted U shape, and as shown in FIGS. 9 and 10, the synthetic resin is formed in a reverse U shape with a cross section narrowed. Made holder 2
4 is externally fitted and fixed to the pile K while being sandwiched and locked by its elasticity. The left and right end portions of the holder 24 are engaging portions that come into contact with the two support rails 22a on the center side and prevent positional displacement from side to side. If the holder 24 itself cannot be firmly fixed by itself, as shown in FIGS. 14 and 15, the spring member 26 made of a spring wire is used.
May be attached.

Next, the sending mechanism 20 will be described.
As described above, the pile rows that are placed on the support rails 22a and 22b in the inclined posture and try to slide down due to their own weight are received by the electromagnetic solenoids, and the receiving position and the retracted position where the receiving support is released. It is provided in and out of the room.
More specifically, as shown in FIG. 1, FIG. 9, and FIG. 10, the frontmost position of a large number of pile rows guided by sliding and falling, the front position of the second pile from the front end side, and the middle of the pile rows. At each of the positions, a pair of left and right catches 27, 28, 29 are arranged,
Each time the traveling body 1 travels the set distance [about 1 meter], 1
Each of the catches 27, 28, 29 is arranged so that the piles K are sent out one by one and the total load of the pile row is not applied to any one of the catches 27, 28, 29. Are configured to be sequentially controlled to be switched in and out.

That is, as shown in FIGS. 1 and 11, an endless chain 33 is wound around a sprocket 30 attached to an intermediate portion of the extension shaft 15 and a sprocket 32 externally fitted to the upper fixed support shaft 31. The chain 33 is provided with abutment pieces 34 at appropriate intervals, and the abutment pieces 34 are attached to the three limit switches SW1, SW2, SW3 arranged close to the turning path every time the wheel 3 travels about 1 meter. The limit switch SW1, SW2, SW
It is configured so that the three are sequentially entered and operated. Then, when the limit switch SW1 which operates first is turned on and operated, the pair of catches 27 arranged at the foremost end position.
Excites the first electromagnetic solenoid SL1 so as to switch from the receiving posture to the releasing posture for a predetermined time, and thereafter, similarly, when the second and third limit switches SW2 and SW3 are turned on and activated, The pair of catches 28 arranged at the front position of the second pile K and the pair of catches 29 arranged at the middle position of the pile row are sequentially and sequentially so as to be switched to the releasing posture for a predetermined short time, The second and third electromagnetic solenoids SL2 and SL3 are excited and driven.

By setting the timing in this way,
As shown in FIG. 10, when the front end catch 27 is in the releasing posture, only one pile K at the foremost end slides down toward the front side and is slid and guided, so that the front end catch 27 is in the receiving posture. Returning to this, when the second receiving member 28 is in the releasing posture, the front half side portion of the pile row slides down and is received and supported by the front end receiving member 27. Then, when the catch 29 at the intermediate position is in the releasing posture, the pile rows on the latter half side slide down and are moved one by one to the first half side to supply the shortage, and then immediately in the catching posture,
The load of the second half pile row will be received. A one-way rotation clutch 36 is interposed between the drive side sprocket 30 of the endless chain 33 and the extension axle 15, and a reverse rotation preventing mechanism 37 is provided in the middle of the rotation of the chain 33 so that the traveling machine body 1 can move in a predetermined direction. The chain 33 is rotated only when traveling in the right direction in FIG. 1 and is prevented from rotating when traveling in the opposite direction.

The driving mechanism 21 will be described. Figure 3,
As shown in FIG. 4, the driving mechanism 21 drives the single pile K fed from the pile mounting portion 19 to the ground by the driving tool 41 that is driven up and down between the upper waiting position and the lower driving position. Enabled and configured. More specifically, the left and right guide rails 38 provided on the vertical support columns 12a on both the left and right sides of the frame body 12 on the upper side in the machine body traveling direction.
The left and right sliding guide portions 40 provided with three guide rollers 39 on both the left and right sides are slidably supported in a vertically movable manner, and are formed on the front view gate side across these sliding guide portions 40. By installing the driving tool 41, the driving tool 41 is slidably guided up and down in the vertical direction. The driving tool 41 is
An interlocking rod 46 pivotally connected to the left and right central portions thereof and an L-shaped arm 48 pivotally connected to a piston rod 47a of a hydraulic cylinder 47 supported by the frame 12 are pivotally connected to each other. When the extension movement of 47 is performed, the drive is lowered, and when the movement is shortened, the drive is raised.

Then, it is detected whether or not the driving tool 41 can be moved down to the driving position by manually operating the driving mechanism 21 and whether the driving tool 41 is present at the driving position. Lower limit detecting means 43 and upper limit detecting means 44 for detecting whether or not the driving tool 41 is present at the standby position, and the lower limit detecting means 43 is moved by the downward movement of the driving tool 41 accompanying the operation of the driving operation tool 42. When actuated, the driving tool 41 is driven upward, and when the upper limit detecting means 44 is activated by the upward movement of the driving tool 41, the movement of the driving tool 41 is stopped and the driving operation tool 4 is operated.
A driving link means 45 for linking the driving mechanism 21, the driving operation tool 42, the lower limit detection means 43, and the upper limit detection means 44 is provided so that 2 can return to the original position.

More specifically, as shown in FIGS. 3 to 7, the driving operation tool 42 is composed of an operation lever (corresponding to an artificial operation tool) for switching the rotary control valve 49 of the hydraulic cylinder 47, and has a lower limit. The detection means 43 is composed of a first arm [corresponding to a lower limit detection member] swingably attached to the lower portion of the frame body 12, and the upper limit detection means 44 is swingably attached to the upper center of the frame body 12. First arm [corresponding to the first interlocking member] 50 for operating the operated arm 49a of the control valve 49 and the operating lever 42, and the operated arm. 49a and a second wire [corresponding to a second interlocking member] 51 that interlocks with the second arm 44, and a third wire [corresponding to a third interlocking member] 52 that interlocks the operating lever 42 and the first arm 43. Driving connection means 45 It is configured.

The control valve 49 is of a three-position switchable type including a lowered position D, a neutral position N, and a raised position U, and an operated arm 49.
Return spring that pulls on a (equivalent to the second elastic member) 5
3 is always urged back to the raised position U, whereas the operating lever 42 is of a two-position switching type of a lowered position [corresponding to the first position] d and a rising position [corresponding to the second position] u, The dead point spring [corresponding to the first elastic member] 54 constitutes a dead point mechanism A in which the bias is maintained at the respective positions d and u. That is, the lever pulling line by the dead point spring 54 is displaced from the lever fulcrum Y at any of the descending and ascending positions d and u. Further, each of the first wire 50 and the third wire 52 is connected to the operation piece 42a of the operation lever 42 through the interchange springs 55, 55 to absorb a dimensional error and protect the mechanism.

The operation of the driving linking means 45 will be described. First, as shown in FIG. 6, when the operating lever 42 is manually operated to the lowering position d, the control valve 49 is operated to the lowering position D, the hydraulic cylinder 47 is extendedly driven, and the driving tool 41 is driven to drive the pile K. Drive down. At this time, the first arm 43 is switched to the state of swinging counterclockwise in the figure, and the second arm 44 is also switched to the highest position of swinging counterclockwise in the figure.

With the arrival of the bottom dead center of the driving tool 41 to drive the pile K, the first arm 43 is forcibly swung clockwise in the drawing as shown in FIG. The operation lever 42 via the dead point spring 5
4 is forced to switch from the lowered position d to the raised position u against the biasing force of 4. Then, the first wire 50 loosens and the return spring 53
Is activated, the control valve 49 is moved to the raised position U after passing through the neutral position N, and the hydraulic cylinder 47 is immediately activated.
Is shortened to drive the driving tool 41 upward, and the second arm 44 swings clockwise in the drawing,
Switch to the lowest position.

Then, as shown in FIG. 5, the second arm 44 is forcibly oscillated counterclockwise in the drawing when the top dead center is reached, and the second arm 44 is switched to a state in which it is just horizontal in the upper and lower middle portions. By returning the operating arm 49a from the raised position U to the neutral position N, the hydraulic cylinder 47 is stopped in the shortest state, and the driving tool 41 is maintained in the raised standby position. At this time, the first wire 50 becomes loose, but the urging force of the dead point spring 54 keeps the operating lever 42 in the raised position u. In other words, when the driving of the pile K is completed by one cycle of the driving mechanism 21, the operation lever 42 is always in the raised position u, and therefore the operation of the operation lever 42 is the driving operation of the pile K.
The driving linking means 45 functions so that a one-touch operation of simply moving the button toward the lowered position d is sufficient.

Further, as shown in FIG. 8, the transmission / interruption means C capable of connecting / disconnecting the power to the traveling device 3 and the traveling distance detecting means 56 capable of detecting the traveling distance are provided. When the detected traveling distance reaches a predetermined value, the transmission / interruption means C is provided so as to automatically disconnect the power to the traveling device 3.
And a traveling link means 75 that links the traveling distance detection means 56
In addition to the above, a traveling operation tool 58 that enables transmission connection of the transmission connecting / disconnecting means C to be manually connected is provided, and an automatic traveling stopping device that automatically stops traveling when traveling for a predetermined distance is provided.

That is, the transmission / interruption means C is constituted by the main clutch by tightening and loosening the belt transmission mechanism 7 by the tension arm 57, and the substantially gear-like rotating member 59 attached to the axle 3a of the traveling wheel 3 and the transmission case. A pulse counting device P consisting of a pickup 60 attached to the
Is a clutch lever having an operating mechanism 58K including a lever position detecting sensor such as a two-position switch or a potentiometer and a lever operating mechanism capable of driving and swinging the operating lever 58a. A travel operation tool 58 is configured, a geared motor 61 that drives and swings the tension arm 57 is provided, and a travel linking means 75 is configured by a control device that links the pickup 60, the geared motor 61, and the clutch lever 58. There is. An operation panel 62 provided with various lamps and a battery 63 are connected to the control device 75.

The operation of the traveling linking means will be described. During traveling while the clutch lever 58a is turned on and operated, the pulse count signal from the pickup 60 is constantly controlled.
5 is input, and when the count number from the previous start of traveling of the airframe reaches a predetermined value, the geared motor 61 is driven to disengage the main clutch C, and the airframe is stopped.
The operation mechanism 58K operates to return the clutch lever 58a to the disengaged position. In order to allow the machine body to travel again from the machine body stopped state due to the forced stop operation of the geared motor 61, the clutch lever 58a in the disengaged position may be manually operated to the engaged position (at this time, the operation mechanism 58K operates as a lever). (The operation does not hinder the operation), and the reading of the pulse count by the above-mentioned pickup 60 is started at the time of starting the traveling of the machine body accompanying the entering operation.

Next, a guide portion for guiding the piles K sent out one by one as described above to the driving standby position by the driving tool 41 without disturbing the posture will be described. Figure 2
As shown in FIG. 3, the pair of support rails 22b positioned on the outer side of the pile mounting portion 19 on the terminal end side in the pile feed-out direction is a side view in order to guide the one pile K fed out by sliding fall. Driving tool 41 so as to draw a smooth arc shape
It is extended to the vicinity of the standby position. Also, the driving tool 4
As shown in FIG. 12, the left and right driving portions 41a, 41a of the first embodiment are provided with a receiving guide plate 66 which is swingable about an oblique axis on the lower side surface of the pile K in the insertion direction, The upper side of the pile K guided by the dynamic drop is securely received and supported at the lower side of the driving action portion 41a, that is, at the driving standby position.

The receiving guide plate 66 is made of a synthetic resin material, and its swinging toward the side opposite to the entering direction of the pile K is regulated by abutment, and the position of the receiving guide plate 66 is regulated at a predetermined guide position by a spring 67. It is urged to swing. The spring urging force of the spring 67 is set to be weak enough not to push down the pile K even if the machine body advances after the pile K has been driven in, and to retract and swing in the direction opposite to the machine body traveling direction. is there. With this structure, after the driving is completed, the machine body can be run without raising the driving tool 41 to the predetermined rising position. Further, on the lower side on both the left and right sides of the pile K guided by sliding and falling, an inclined guide plate 6 for guiding slidably downward while receiving and supporting the lower end of the pile K.
In order to prevent the posture of the pile K from being disturbed during the fall by guiding the piles 8 to the frame body 12 in a fixed state from above and contacting the upper right and left sides of the pile K which slides and falls. A guide rod 69 whose body is bent in an L shape is provided in a fixed state on the frame body 12. Furthermore, when the driving standby position is reached, the pile K
A left and right receiving member 70 is provided in a fixed state so as to come into contact with an intermediate portion on the lower left and right sides of and to position at a driving standby position.

Then, in the extension of the support rail 22b,
A leaf spring 71 is attached to guide the pile K into the lower side of the driving action portion 41a of the driving tool 41. Since the elastic member is thus configured, the driving tool 41 is configured so that it can be reliably guided to the standby position as close to (or wrapped as possible) the movement trajectory of the vertically moving driving tool 41. Even if it comes into contact with, it can be elastically retracted and displaced without damage.

Explaining the piling work procedure, the operation is carried out in a state in which the operator manipulates the clutch lever 58a so as to straddle the crop ridge in the field while setting the steering handle 11 in an oblique posture to prevent the operator from stepping on the crop ridge. When the vehicle is made to travel, due to the action of the travel linking means 75, the aircraft automatically travels after traveling for a predetermined distance [about 1 meter]. Then, the operating lever 42 is operated to the lowered position D, and the pile K, which is guided in sliding contact and falling to the driving standby position by the operation of the feeding mechanism 20, is driven by the driving mechanism 21.
At this time, the above-described guide mechanism allows the pile K to be smoothly slid and guided toward the driving standby position without disturbing the posture. In other words, the operator can continuously drive the piles at predetermined intervals with a simple operation by only alternately repeating the operation of engaging the clutch lever 58a and the operation of lowering the operation lever 42.

For reference, the operation of the operation panel 62 will be described. As shown in FIG. 8, when the piles K are continuously driven at a predetermined interval with the main power source turned on,
The "pulse reading" is turned on and the "running" button 65 with a lamp is pushed to set the running state.
When changing the pile driving pitch, the pitch adjusting dial 64 is rotated. When it is desired to stop the machine during pile driving, the "stop" button 72 with a lamp should be pressed, and the machine will be stopped with priority. To continue traveling on the road, press the "Run" button 65,
In addition, the "pulse reading" is turned off and the traveling link means 7
5 is in a non-functioning state.

In the present embodiment, the working machine main body has been described as being in the standard ground clearance state. However, as shown in FIG. 13, a drive shaft 74 corresponding to the axle 3a of the present embodiment has a chain interlocking mechanism 73 interposed therebetween. The present invention may be applied to a high-flow working vehicle in which the traveling wheels 3 are lowered relative to the machine body. In this case, the rotation speed of the drive shaft 74 is picked up by the pickup 6
It will be detected at 0.

It should be noted that reference numerals are added to the claims to facilitate the comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

1] Overall side view of work vehicle

[Fig. 2] Side view of the pile feeding section

[Figure 3] Front view of the pile driving part

[Fig. 4] Front view of the pile driving part

FIG. 5 is a control system diagram with the driving tool in a standby position.

FIG. 6 is a control system diagram showing a state where the driving tool is in the middle of descending movement.

FIG. 7 is a control system diagram with the driving tool in the driving position.

FIG. 8 is a system diagram showing a control structure of the automatic traveling stopping device.

FIG. 9 is a front view of a part cutout of a pile mounting portion.

FIG. 10: Side view of pile mounting part

FIG. 11 is a side view of a sending-out control unit.

FIG. 12 is a front view of a pile driving section.

FIG. 13 is a schematic diagram showing the structure of a high-flow specification axle portion.

FIG. 14 is a front view showing another structure of the holder.

FIG. 15 is a sectional view of the holder of FIG.

[Explanation of symbols]

 19 Pile mounting section 21 Driving mechanism 41 Driving tool 42 Manual operation tool 43 Lower limit detection member 44 Upper limit detection member 45 Driving linkage means 47 Hydraulic cylinder 49 Control valve 50 First interlocking member 51 Second interlocking member 52 Third interlocking member 53 Second Elastic member 54 1st elastic member K Pile A Dead point mechanism D Descent position N Neutral position U Raised position d 1st position u 2nd position

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tokio Horikawa 64 Ishizukita-cho, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd.

Claims (1)

[Claims] 1. A pile mounting part (19) for supporting a large number of piles (K) side by side, and a single pile (K) sent out from this pile mounting part (19) is placed at an upper standby position and a lower position. The driving tool (4 which is driven up and down depending on the driving position of
1) A pile driving device having a driving mechanism (21) capable of being driven to the ground by a hydraulic cylinder (4) for driving and lifting the driving tool (41).
7), the driving mechanism (21) is constituted, and a three-position switching type control valve (4) that controls the operation of the hydraulic cylinder (47) thereof.
9), a first position (d) for switching the control valve (49) to a lowered position (D), and a raised position (U) for the control valve (49).
The driving tool (41) is present at the driving position by abutting the artificial operating tool (42) having two switching positions of the second position (u) and the driving tool (41). An upper limit detection member (44) for detecting whether or not the lower limit detection member (43) for detecting whether or not the driving tool (41) is present at the standby position by contact with the driving tool (41). And an artificial operating tool (42) provided by a first elastic member (54).
A dead point mechanism (A) for maintaining the urging force to the first and second positions (d) and (u), and the control valve (49).
The second elastic member (5) for urging the member to return to the raised position (U).
3), the artificial operation tool (42) and the control valve (49)
A first interlocking member (50) interlockingly connecting with each other, a second interlocking member (51) interlockingly connecting the upper limit detection member (44) and the control valve (49), and the lower limit detection member (43). A third interlocking member (5) interlockingly connecting with the control valve (49).
2) are respectively provided, and when the lower limit detection member (43) is operated by the downward movement of the driving tool (41) accompanying the switching of the manual operation tool (42) to the first position (d), The control valve (4
9) to the raised position (U) and to switch the manual operation tool (42) to the second position (u) against the biasing force of the first elastic member (54), and , The upper limit detection member (44) by the upward movement of the driving tool (41)
Is operated, the control valve (49) is switched to the neutral position (N) located between the lowered position (D) and the raised position (U), and at the same time, the human-operated operation tool (42) is operated. ) Is maintained at the second position (u), the artificial operation tool (42) and the control valve (49) are controlled by the first to third interlocking members (50), (51), (52). A pile driving device comprising a driving linking means (45) for mechanically linking the lower limit detection member (43) and the upper limit detection member (44).