JPS59102012A - Sand pile former - Google Patents

Abstract

PURPOSE:To prevent the occurrence of noise during the construction work by a method in which an impacting part provided to an intermediate tube is collided with a stopper provided to the intermediate tube while turning a casing, and the impaction force is transmitted to the casing connected integrally with the intermediate tube. CONSTITUTION:A casing 6 is turned by a turning drive means 7, an air spring device 14 is operated to lower the machine frame 1 while vertically vibrating an inner tube 13. Whereupon, an upper impacting part 16 is collided with a stopper 15 and the impaction force is transmitted to the casing 6 through the intermediate tube 9 to penetrate the casing 6 into the ground. The machine frame 1 is gradually raised while charging sand into a sand path 10 between the casing 6 and the intermediate tube 9 from a hopper 5, and the casing 6 is pulled up. Sand charged is supplied to the lower part of the casing and compacted by the head 33 of the inner tube 13 to form a sand pile.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sand pile construction device for constructing sand piles in soft ground in order to improve soft ground. To provide a sand pile building device that can perform noiseless work without using a noise-generating vibrator or the like, and can set the center of gravity of the device at a low position to perform work in a stable state.

Fig. 1 is an overall front view of the sand pile making device, and Fig. 2 is a side view of its main parts. In these figures, 1 is suspended from the top of the leader 2 via a wire (not shown). The machine frame is supported by the guide rail 3 of the leader 2 via a guide so as to be able to rise and fall freely, and a sand charging hopper 5 is integrally installed at the lower part of the machine frame 1. Reference numeral 6 denotes a rectangular cylindrical casing, which is rotatably connected to the lower end of the hopper 5. Reference numeral 7 denotes a rotational drive means that transmits rotational force to the casing 6 while allowing the casing 6 to move up and down. 2 is mounted on a support frame 8 fixed to the lower part of 2. Reference numeral 9 denotes a cylindrical middle tube, which is inserted concentrically into the casing 6 and forms a sand insertion passage 10 between it and the casing 6.
It extends through the inside of the machine frame to the bottom end and is rotatably supported there. This middle pipe 9 has a plurality of (for example, four) connected play holes I..., 12, which are arranged at intervals in the circumferential direction at the upper end and the middle part, respectively.
... (see Fig. 3), and is integrally connected to the casing 6, so that the casing 6 and the inner tube 9 can rotate together. 13 is a cylindrical inner tube (which may be hollow or solid) inserted into the middle tube 9; the upper end of this inner tube 13 extends further upward beyond the upper end of the middle tube 9; The inner tube 1 extends further downward beyond the inner tube 1.
3 is an air spring device 14 that is installed in the machine frame l and serves as a vertical vibration means for vertically vibrating between predetermined strokes.
Therefore, the inner tube 13 vibrates vertically with the same stroke, that is, the same amplitude as the air spring device 14. Further, in the lower part of the inner tube 13, the inner tube 1
An upper abutting part 16 and a lower abutting part 17 that abut against a stopper part 15 provided at the lower end of the middle tube 9 when the tube 3 vibrates up and down are integrally provided at a predetermined interval in the vertical direction, When the casing 6 is driven in, only the upper abutment part 16 abuts against the stopper part 15, and when the casing 6 is pulled out, only the lower abutment part 17 abuts against the stopper part 15. 16 hits the stopper portion 15, the downward impact force is transmitted from the middle tube 9 to the connecting plate 11.1.
The casing 6 is driven into the ground by the downward impact force that is transmitted to the casing 6 through the casing 2 and acts on the casing 6, and the impact of the lower impact part 17 against the stopper part 15 causes the casing 6 to be driven into the ground. An upward impact force is generated on the tube 9, and this upward impact force is transmitted to the casing 6 through the connecting plates 11 and 12, thereby promoting the pulling out action of the casing 6. The rotation driving means 7 is a first
As is clear from the figures and FIG. 3, four guide rollers 19 are installed inside the hollow cylindrical rotating body 18 through which the rectangular cylindrical casing 6 can be inserted, on the outer peripheral surface, that is, on the four side surfaces of the casing 6. Each guide roller 19 is rotatably supported by a pin 20, and a gear 21 is provided on the outer periphery of the rotating body 18. The cylindrical rotating body 18 is rotatably supported via a bearing 22a on a hollow cylindrical base 22 fixed on a support frame 8 extending from the leader 2 side, and the guide Rollers 19 are rotatably supported on each of the four sides of the rectangular cylindrical casing 6, and a gear 21 on the outer periphery of the rotating body 18 is fixed to the output shaft 24 of an electric motor 23 installed on the support frame s. The rotation of this output shaft 24 causes the rotating body to rotate via gears 25 and 21,
This allows the rectangular cylindrical casing 6 to rotate while being able to move up and down. Incidentally, since the rectangular cylindrical casing 6 is integrally connected to the middle pipe 9 by the connecting plays i-u, t2, it rotates together with the middle pipe 9 and moves up and down.

In addition, the machine frame 1 has four pillars 27 erected at the four corners of the lower frame 26, and these pillars 27...
The upper frame 2B is fixed to the upper end of the machine frame 1.
An air spring device 14 is installed between the upper and lower frames 28 and 26, and the upper end of the middle tube 9 is rotatably held in the center of the lower frame 26 via a bearing device 29.

The air spring device 14 is configured such that the support columns 27 and the movable base 30 are attached so as to be slidable up and down, and the air springs 31 for downward movement are fitted onto each of the support columns 27 between the movable base 30 and the upper frame 28. Four upward movement air springs 32 are similarly interposed between the movable table 30 and the lower frame 26,
Then, a branch pipe (not shown) from an air distribution pipe (not shown) is connected to the lower movement air spring 31, and a branch pipe from the air circulation pipe is connected to the upper movement air spring 32 in the same way. An air hose or the like (not shown) from an air compressor (not shown) is connected to an air supply port and an exhaust port (not shown) provided in each air distribution pipe via a solenoid valve (not shown), By switching this solenoid valve, air from the compressor is alternately pressed into and out of the lower air spring 31 and the upper air spring 32, thereby alternately expanding and contracting the lower air spring 31 and the upper air spring 32. As a result, the movable base 30 is moved between the lower base 26 and the upper base 2.
8 and is configured to vibrate vertically with a predetermined stroke.

The upper end of the middle tube 9 is fixed to the movable table 30 of the machine frame L, and therefore, the vertical vibration of the movable table 30 caused by the operation of the air spring device 14 causes the inner tube 13 to vibrate vertically with the same stroke as the movable table 30. I will do it. In the air spring device I4, the moving path of the movable base 30 that moves up and down, for example, a limit switch (on the side of the air spring 31, 32) that is energized and operated only when driving the casing 6 (
(not shown) and a mint switch (not shown) that is energized and operates only when the casing 6 is pulled out, and a limit switch for driving is installed appropriately before the end of the stroke in the upward stroke of the movable table 30. Also, limit switches for withdrawal are installed appropriately before the end of the stroke in the downward stroke of the movable base 30, and these limit switches are electrically connected to the solenoid valves interposed in the air flow pipe of the air spring device 14. Keep it connected. When driving the casing, when the movable base 30 descends to the end of its downward stroke, the upper abutment part 16 hits the stopper part 15 of the middle pipe 9 due to the lowering of the inner tube 13, but as the movable base 30 rises. Sometimes, this movable table 30 is stopped from rising by kicking a limit switch before reaching the end of its upward stroke, thereby preventing the lower abutment part 17 of the inner tube 13 from abutting against the stopper part 15, and then The same operation is repeated so that only the upper abutting portion 16 abuts against the stopper portion 15 of the inner tube 13 during the casing driving. Furthermore, when pulling out the casing, when the movable base 30 is lowered, its lowering is restricted by a limit switch before reaching the end of its stroke, so that only the lower abutment part 17 abuts against the stopper part 15 of the inner tube 13. ing.

In addition, as the vertical vibration means, the above-mentioned air spring device ft.
Instead of 14, an air cylinder device or a hydraulic cylinder device can be used.

To operate the sand pile making device having the above-mentioned configuration, first, the machine frame 1 is suspended from the top of a league (not shown) at an appropriate height, and the machine frame 1 is suspended from the top of a league (not shown), and the guide rail 3 is suspended via the guide 4.
Then, the rotation drive means 7 is operated to continuously rotate the casing 6, and the air spring device 14 is operated to vibrate the middle tube 13 vertically. From this state, the lifting operation wire (not shown) is let out to lower the machine frame l, and the middle tube 9 is moved by the rotation of the casing 6 and the impact of the upper abutment part 16 against the stopper part 15. The downward impact force acting on the casing 6 through the casing 6 causes the casing 6 to penetrate into the ground. After the casing 6 has penetrated into the ground to a predetermined depth in this way, sand is introduced into the sand insertion passage 10 between the casing 6 and the middle pipe 9 from the oneper 5, and the lifting operation wire is wound up to form the machine frame. is gradually raised to begin the operation of pulling out the casing 6. During this pulling operation, the rotation action of the casing 6 and the vertical vibration action of the inner tube 13 are performed in the same manner as during driving, but only the lower abutting part 17 is brought into contact with the stopper part 15, contrary to the driving. west,
The casing 6 is then pulled out of the ground by the continuous rotation of the casing 6 and the upward impact force acting on the casing 6 due to the impact of the lower abutting portion 17. In this case, the sand introduced into the sand insertion passage 10 is supplied to the lower part of the casing 60, where it is pushed out while being tamped by the head 33 of the inner pipe 13, and as the casing 6 rises, it forms a dense and strong sand pile. form. In addition, since the impact sound generated when the upper abutting portion 16 or the lower abutting portion 17 abuts against the stopper portion 15 in the above-mentioned driving and pulling operations is generated within the casing, the casing 6
If the impact parts 16 and 17 are installed as low as possible in the inner pipe 13, the lower part of the casing will be almost underground during the sand pile making equipment operation. Since the inner tube 13 and the middle tube 9 are embedded in each other, the sound insulation effect is further improved.Although not shown in the drawings, by appropriately providing a sound insulation member between the inner tube 13 and the middle tube 9, the sound insulation effect can be further improved.

The sand pile construction apparatus shown in FIGS. 1 to 3 described above rotates the rectangular cylindrical casing 6 using a rotary drive means, and also prevents the inner pipe 13 from colliding with each other when the inner pipe 13 moves upward or downward. The casing 6 is driven in or pulled out by the downward or upward impact force and the rotational action of the stopper part of the middle tube 9, as shown in Figs. 4 and 5. The sand pile building device shown in FIG. 1 is the same as the device shown in FIGS. 1 to 3 in that the rectangular cylindrical casing 6 is rotated by a rotary drive means, but instead of applying an impact force to the casing 6, vertical vibration is applied. This shows a device in which a driving force in the vertical direction, that is, a pushing force or a pushing force is applied to the casing 6 by means to move the casing downward or upward by a required amount. Since the main parts of the structure of the apparatus shown in FIGS. 3 and 4 are the same as the apparatus shown in FIGS. are omitted, and the same members are given the same reference numerals.

In FIGS. 3 and 4, 34 is a rectangular cylindrical casing 6.
This casing 6 is used to move up or down by the required amount.
The vertical drive means 34 is provided on the support frame 8 together with the rotation drive means 7 for rotating the casing 6. The vertical drive means 34 includes a chuck mechanism 35 that clamps and fixes the rectangular cylindrical casing 6, a lifting mechanism 36 that lifts and lowers the chuck mechanism 35 by a required stroke, and a coupling mechanism that rotatably connects the chuck mechanism 35 to the lifting mechanism 36. It consists of 37. If we explain each mechanism in detail,
The chuck mechanism 35 includes air cylinders (hydraulic cylinders may also be used) 39...
are arranged so that each piston rod 39a reciprocates in the radial direction of the frame 38, and when each piston rod 39a is operated in the centripetal direction of the frame 38, the crimping piece 40 at the tip A rectangular cylindrical casing 6 is clamped and fixed. Further, the lifting mechanism 36 is connected to the support frame 8
It consists of a plurality of, for example two, air cylinders (or hydraulic cylinders) 41.41 installed vertically above, and a coupling mechanism 37 is interposed between these air cylinders 41.41 and the chuck mechanism 35. There is. That is, this coupling mechanism 37 is constructed by disposing a ring-shaped frame 42 having a larger diameter outside the ring-shaped frame 38 of the chuck mechanism 35, and
A head cover 43 is fitted between the ring-shaped frame 42 and the ring-shaped frame 42, and the ends of the piston rods 41a, 41a of the air cylinders 3t are connected to the lower surface of the ring-shaped frame 42. ing. Therefore, when operating the vertical drive means 34, the square cylindrical casing 6 is clamped and fixed by the chuck mechanism 35, and in this state, the cylinder 41 of the lifting mechanism 36.
41 to raise the piston rods 41a and 41B by a predetermined stroke, the casing 6 is lifted by that stroke, and the piston rod 41
By lowering a and 41a, it is pushed down by the same stroke. At this time, when the casing 6 rotates, the chuck mechanism 35 rotates integrally with the casing 6 and moves up or down by itself.

In operating the sand pile making device as described above, the machine frame (not shown) is suspended from the top of the leader 2, guided and supported along the guide rail 3, and the rotary drive hand It7 is operated to move the square tube. The shaped casing 6 is driven to rotate, and the vertical drive means 34 is operated to forcibly push the casing 6 downward by a predetermined stroke of the air cylinder 41. In such a situation, the lifting operation wire (
4 (not shown) to lower the machine frame, and the casing 6 is penetrated into the ground to a predetermined depth by the rotating action of the rotary drive means 7 and the so-called intermittent pushing action of the vertical drive means 34. After penetrating the casing 6 to a predetermined depth in this manner, the machine frame is gradually raised by winding the lifting operation wire while feeding sand from the hopper into the sand insertion passage 10 between the casing 6 and the middle pipe 9. Then, the operation for pulling out the casing 6 begins. During this pulling operation, the rotational action by the rotation drive means 7 is performed in the same manner as during penetration, but the vertical drive means 34 is caused to perform an upward action, that is, a pushing-up action, contrary to that during penetration. In this pushing up action, the chuck mechanism 35
is clamped, the piston rod 41a of the cylinder 41 of the lifting mechanism 36 is raised by a predetermined stroke to push up the casing 6 by that stroke, and then the chuck mechanism 35 is opened and the piston rod 41
After lowering a, the above operation is performed again, and thereafter the casing 6 is moved upward by the above stroke 5 by the same operation. Further, the sand introduced into the sand insertion passage 10 is supplied into the lower end of the casing 6, where it is tamped by the head 44 of the inner tube 13 to form a dense and strong sand pile as the casing 6 rises. .

As explained above, the sand pile building device of the present invention does not use a vibrator as in the past, but instead continuously rotates the casing by means of a rotary drive means. The impact force caused by this impact is transmitted to the casing which is integrally connected to the inner pipe, and the casing is rotated by the impact force and the rotational action of the rotation drive means. Since the drive is driven in and pulled out, the impact noise caused by the impact between the impact part and the stopper part can be insulated by the casing.Moreover, since the casing is buried in the ground, there is no noise during use of the device. It doesn't make any loud noise. In addition, due to the continuous rotation of the casing and the history of the impact applied to the casing, the tamping action caused by the vertical movement of the inner pipe during extraction allows the casing to penetrate into the ground or be pulled out of the ground quickly and effectively. It is possible to create strong sand piles.

Further, the sand pile building device of the present invention uses a vertical drive means that applies a driving force in the vertical direction to the casing to move the casing upward (pushing up) or moving it downward (pushing) by a predetermined amount, and also moves the casing. Since a rotational drive means is used to rotate the inner tube, and a vertical vibration means such as an air cylinder is used to move the inner tube up and down by a predetermined stroke when it is pulled out, the device does not generate severe noise or vibration during use. Moreover, a strong sand pile can be quickly constructed by the above-mentioned three means for pushing up, pushing and rotating the casing, and for vertically moving the middle pipe.

Further, according to the device of the present invention, the rotational drive means and the vertical drive means are not provided on the machine frame but are placed on the leader side, particularly in the middle or lower part of the league, so that the structural members suspended by the leader It is possible to reduce the weight of the machine, making it easier to support it with leagues, and also to lower the center of gravity of the entire machine, allowing work to be carried out in a stable state.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway elevational view showing an embodiment of the sand pile building device according to the present invention, Fig. 2 is a side view of the main parts of the device shown in Fig. 1, and Fig. 3
The figure is a cross-sectional view taken along line m-nr in Figure 1, Figure 4 is a partially cut-away elevation view showing a sand pile building device with a partially different configuration from the device in Figure 1, and Figure 5 is a cross-sectional view of the sand pile construction device shown in Figure 4. It is a sectional view taken along the line V-V in the figure. 1... Machine frame, 2... Leader, 5... Hopper, 6
... Casing, 7... Rotation drive means, 8... Support frame, 9... Middle pipe, 10... Sand insertion, channel, 1
1.12... Connection plate, 13... Inner tube, 14.
. . . Air spring device (vertical vibration means), 15 . . . Stopper portion, 16. 17 . Applicant: Kurimoto Nakatomi 8 JP-A-59-102012 (6) No. 3 B4 Figure 4 5 Oral Procedures Amendment Written Type) % Formula % 1. Indication of Case 1980 Patent Application No. 212536 2. Invention Name: Sand pile construction mold 3, Relationship with each case to be amended Applicant: Address (residence): Name: Kurimoto Nakatomi (1 person) 4, Agent: 660 Nagasu Nishi-dori, Amagasaki, Toko Prefecture 1-1-5, date of amendment order (and one other person) March 9, 1980 (shipment date March 29, 1980) 6, engraving of the specification subject to amendment (no change in content). 7. Details of the amendment as shown in the attached sheet.

Claims (2)

[Claims] (1) A hopper for feeding sand is integrally equipped at the bottom of the machine frame suspended by the league, and a casing is rotatably connected to the lower end of this hopper, allowing the casing to move up and down. A rotary drive means for transmitting rotational force to the league is provided in the middle or lower part of the league, and a middle pipe is inserted into the casing, and the middle pipe and the casing are integrally connected via a connecting plate. A sand insertion passage is formed between the middle pipe and the casing, and a vertical vibration means for vertically vibrating for a predetermined stroke is provided in the machine frame.
The inner tube inserted into the middle tube is interlocked and connected to this vertical vibration means,
A sand pile making device characterized in that the inner pipe is provided with an abutment part that abuts against a stopper part provided on the middle pipe when the inner pipe moves up or down. (2) A hopper for feeding sand is integrally equipped at the bottom of the machine frame suspended by the league, and a casing is connected to the lower end of this hopper so as to be rotatable, and the casing can be moved up and down. A rotary drive means for transmitting rotational force to the league is provided in the middle or lower part of the league, and a middle pipe is inserted into the casing, and the middle pipe and the casing are integrally connected via a connecting plate. A sand insertion passage is formed between the middle pipe and the casing, and a vertical vibration means for vertically vibrating for a predetermined stroke is provided in the machine frame.
This vertical vibration means is inserted into the middle pipe, and the inner pipe is interlocked and connected.
Furthermore, the sand pile making device is provided with a vertical driving means for applying vertical driving force to the casing in order to move the casing upward or downward by a required amount at the intermediate or lower portion of the league.