Annular soft cutting rapid breaking device for pile head of cast-in-place pile

Abstract

An annular soft cutting rapid breaking device for a pile head of a cast-in-place pile relates to the technical field of cast-in-place pile construction, and comprises an iris mechanism, a guide pipe, a PVC (polyvinyl chloride) protective sleeve and a push rod, the iris mechanism comprises an annular supporting frame, a plurality of arc-shaped iris rods are arranged at the top of the annular supporting frame, one end of each arc-shaped iris rod is hinged to the annular supporting frame, the other end of each arc-shaped iris rod is a free end, an inner groove is formed in each arc-shaped iris rod, and a roll-shaped isolating membrane is installed in each inner groove; a plurality of guide pipes are arranged on the periphery of the annular supporting frame at equal intervals, the guide pipes are of L-shaped structures, the outlet ends of the guide pipes correspond to the free ends of the arc-shaped iris rods in position, and the ejection rods are inserted into the guide pipes and can stretch out of the outlet ends of the guide pipes; the iris mechanism soft cutting technology is adopted, so that the pile head is rapidly broken, the pile top is smooth and flat, the construction speed is high, the construction cost is greatly reduced, the effective pile body is prevented from being damaged, and the pile body quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cast-in-place pile construction technology, and particularly relates to a cast-in-place pile head ring direction soft cutting quick breaking device. BACKGROUND

[0002] In the construction technology, when pouring the cast-in-place pile, the cement slurry returns upward in the vibrating process, so the strength of the pile head is difficult to guarantee, and the pile head inevitably falls into the impurities such as soil in the concrete pouring process, so the part of the pile head needs to be removed to guarantee the strength of the pile body, so the top elevation of the cast-in-place pile should be higher than the design top elevation of the pile by 0.5-1.0 m to guarantee the strength of the pile head concrete, but the part of the pile head higher than the design top elevation of the pile must be chipped off in the subsequent process construction.

[0003] In the prior art, the pile head is usually broken after the concrete is completely solidified, which can easily cause serious wear of the cutting piece and laborious cutting. UTILITY MODEL CONTENTS

[0004] In view of the above problems of the prior art, the utility model aims to provide a cast-in-place pile head ring direction soft cutting quick breaking device, which can solve the problem that the pile head is usually broken after the concrete is completely solidified in the prior art, which can easily cause serious wear of the cutting piece and laborious cutting.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] A cast-in-place pile head ring direction soft cutting quick breaking device, the breaking device comprises an iris mechanism, a guide pipe, a pvc protective sleeve and a push rod, the iris mechanism comprises a ring-shaped support frame, a plurality of arc-shaped iris rods are arranged on the top of the ring-shaped support frame, one end of each of the arc-shaped iris rods is hinged to the ring-shaped support frame, and the other end is a free end, an inner groove is formed in each of the arc-shaped iris rods, a roll-shaped isolation film is arranged in each of the inner grooves, and the film end of the roll-shaped isolation film is fixedly connected to the ring-shaped support frame, a plurality of guide pipes are equidistantly arranged on the outer periphery of the ring-shaped support frame, the guide pipes adopt an L-shaped structure, the outlet end of each of the guide pipes corresponds to the position of the free end of the arc-shaped iris rod, and the push rod is inserted into the guide pipe and can extend out of the outlet end of the guide pipe.

[0007] Preferably, each of the guide pipes is connected to the ring-shaped support frame through a screw thread.

[0008] Preferably, the number of the guide pipes, the push rod and the arc-shaped iris rods is consistent.

[0009] Preferably, the push rod is a segmental structure formed by sequentially connecting square push units end to end, the square push units are provided with an insertion block at the upper end and an insertion slot at the lower end, and the insertion block and the insertion slot of adjacent two units are matched and connected through a shaft.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1、The utility model discloses a soft cutting process of iris mechanism is realized quick break pile head, the pile top is smooth and even, the construction speed is fast, the construction cost is greatly reduced, prevents the damage effective pile body, guarantees the pile body quality.

[0012] 2、The utility model discloses the iris mechanism and push rod cooperate and realize the concrete partition, and the coiled isolation film in the iris mechanism can guarantee that the upper and lower layer concrete does not happen the adhesion between.

[0013] 3、Compared with the prior art, the gear transmission torque of iris mechanism is big, and the arc iris rod in the utility model drives through the push rod, and the movement direction of the push rod is guided through the guide pipe, realizes the arc iris rod and pushes out. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiment or the prior art of the present application, the drawings needed in the embodiment will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can also be obtained according to these drawings for the ordinary skilled in the art.

[0015] Figure 1 It is the overall structure schematic diagram of the utility model cast-in-place pile;

[0016] Figure 2 It is the storage structure schematic diagram of iris mechanism in the utility model break device;

[0017] Figure 3 It is the expansion structure schematic diagram of iris mechanism in the utility model break device;

[0018] Figure 4 It is the push unit structure schematic diagram in the utility model break device.

[0019] EXPLANATION OF DRAWINGS:

[0020] 1-iris mechanism, 11-ring support frame, 12-arc iris rod, 2-guide pipe, 3-pvc protective sleeve, 4-push rod, 41-push unit, 42-insertion block, 43-insertion slot. DETAILED DESCRIPTION

[0021] The content of the utility model is described in detail below by way of example in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only some of the embodiments of the utility model, not all.

[0022] Embodiment

[0023] As Figures 1 to 3 shown, the utility model discloses a kind of pile head ring soft cutting quick breaking device, and the breaking device includes iris mechanism 1, guide pipe 2, pvc protective sleeve 3 and push rod 4;The iris mechanism 1 includes annular support frame 11, the annular support frame 11 top is equipped with six arc iris rods 12, one end of six The arc iris rod 12 is hinged with annular support frame 11, and the other end is free end, inner groove is formed on each described arc iris rod 12, and roll-shaped isolation film is installed in the inner groove, and the membrane end of the roll-shaped isolation film is fixedly connected on annular support frame 11, and the iris mechanism 1 of the utility model cooperates with push rod 4 and realizes concrete partition, and the roll-shaped isolation film in iris mechanism 1 can guarantee that upper and lower layer concrete does not occur adhesion;The outer periphery of the annular support frame 11 is equidistantly arranged with six guide pipes 2, and six The guide pipe 2 is connected with annular support frame 11 by screw thread;The guide pipe 2 adopts L type structure, the outlet end of the guide pipe 2 corresponds with the free end position of arc iris rod 12, the push rod 4 is inserted in guide pipe 2 and can be stretched from the outlet end of guide pipe 2, and the arc iris rod 12 in the utility model is driven by push rod 4, the movement direction of push rod 4 is guided by guide pipe 2, and the arc iris rod 12 is pushed out;The number of guide pipe 2, push rod 4 and arc iris rod 12 is consistent.The utility model is broken out by adopting iris mechanism 1 soft cutting process to realize that pile head is quickly, and pile top is smooth and even, construction speed is fast, construction cost is greatly reduced, effectively prevents damage pile body, and guarantees pile quality.

[0024] As Figure 4 shown, the push rod 4 is by a plurality of square push single body 41 sequentially head-to-tail splicing and becomes segmental structure, the square push single body 41 upper end is equipped with plug 42, lower end is equipped with slot 43, and the plug 42 and slot 43 of adjacent two single bodies are matched and connected by shaft.

[0025] Breaking step is as follows:

[0026] Step one, L type steel guide pipe 2 is installed on the annular support frame 11 of iris mechanism 1 by screw thread.

[0027] Step two, iris mechanism 1 is installed on the reinforcement cage, and is fixed using plastic tie, and installation position is the design breaking position of pile head.

[0028] Step three, pvc protective sleeve 3 is sleeved on the connecting bar of reinforcement cage.

[0029] Step four, the steel cage with breaking device is hoisted to the design elevation in the borehole, and the conventional bored pile concrete pouring operation is carried out, and the lifting lug is embedded in the concrete at the top of the pile.

[0030] Step five, after the concrete pouring is completed, the segmented pushing rod 4 is inserted into the guide pipe 2 before the initial setting of the concrete, so that the segmented pushing rod 4 extends from the outlet end of the guide pipe 2 and pushes the arc-shaped iris rod 12, and the free end of the arc-shaped iris rod 12 is pushed to the center of the annular support frame 11, the inner groove of the arc-shaped iris rod 12 is pre-installed with a coiled isolation film, and the coiled isolation film is unfolded and separates the flowing concrete when the arc-shaped iris rod 12 is pushed, so as to form an isolation layer.

[0031] Step six, after the pile body concrete reaches the design strength, the earthwork around the pile site is excavated.

[0032] Step seven, the pile top is gently pushed by the excavator, so that the pile head is disconnected along the position of the isolation layer.

[0033] Step eight, the lifting hook is hung on the lifting lug at the top of the pile, and the broken body is lifted away by the crane.

[0034] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the application concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A rapid circumferential soft-cutting device for the pile head of a cast-in-place pile, characterized in that: The breaking device comprises an iris mechanism (1), a guide pipe (2), a PVC protective sleeve (3) and a push rod (4); the iris mechanism (1) comprises a ring-shaped support frame (11), a plurality of arc-shaped iris rods (12) are arranged on the top of the ring-shaped support frame (11), one end of each of the arc-shaped iris rods (12) is hingedly connected to the ring-shaped support frame (11), and the other end is a free end, an inner groove is formed in each of the arc-shaped iris rods (12), a roll-shaped isolation film is arranged in the inner groove, and the film end of the roll-shaped isolation film is fixedly connected to the ring-shaped support frame (11); a plurality of guide pipes (2) are equidistantly arranged on the outer periphery of the ring-shaped support frame (11), the guide pipes (2) have an L-shaped structure, the outlet end of each of the guide pipes (2) corresponds to the position of the free end of each of the arc-shaped iris rods (12), and the push rod (4) is inserted into each of the guide pipes (2) and can extend out of the outlet end of each of the guide pipes (2).

2. The soft cutting and quick breaking device for the pile head of the cast-in-place pile according to claim 1, characterized in that: Each of the guide pipes (2) is connected to the ring-shaped support frame (11) through a thread.

3. The soft cutting and quick breaking device for the pile head of the cast-in-place pile according to claim 1, characterized in that: The number of the guide pipes (2), the push rod (4) and the arc-shaped iris rods (12) is consistent.

4. The device for quickly and softly cutting and breaking the pile head of a cast-in-place pile according to claim 1, characterized in that: The push rod (4) has a nodal structure formed by sequentially and end-to-end connecting a plurality of square push single bodies (41), the upper end of each of the square push single bodies (41) is provided with an insertion block (42), the lower end of each of the square push single bodies (41) is provided with an insertion groove (43), the insertion block (42) of each of the adjacent two single bodies is matched with the insertion groove (43) of the other single body and connected through a shaft.

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