Pile feeding device for embedded precast piles

Abstract

The utility model discloses a pile feeding device for an embedded precast pile. The pile feeding device comprises a drill rod; the connecting piece is provided with a first connecting end and a second connecting end which are opposite to each other, the first connecting end is detachably connected with the drill rod, a hollow space penetrating through the second connecting end is formed in the connecting piece, one end of the precast pile can stretch into the hollow space from the second connecting end and is detachably connected with the connecting piece, and a hydraulic rod is further arranged in the hollow space; the hydraulic rod comprises a cylinder body and a telescopic rod capable of sliding relative to the cylinder body, the cylinder body is fixedly connected to the connecting piece, and the telescopic rod can abut against the precast pile and is used for applying downward acting force to the precast pile. According to the utility model, the hydraulic rod is arranged in the connecting piece, and the telescopic rod of the hydraulic rod can be propped against the precast pile and apply a downward acting force to the precast pile through the extension and retraction of the hydraulic rod, so that the precast pile can downwards break a soil body blocked by the bottom surface of a pile hole, and the precast pile can completely extend into the pile hole and sink to a preset height.

Description

TECHNICAL FIELD

[0001] The utility model relates to precast pile construction technical field especially relates to a send pile device of embedded precast pile. BACKGROUND

[0002] The precast pile is a kind of pile foundation component that is prefabricated in factory, is widely used in the foundation construction of construction engineering, and is usually made of concrete, reinforced concrete or steel. The main feature of precast pile is to be manufactured on a special production line, which ensures the consistency of product quality and performance. Compared with the pile cast in situ, the precast pile has higher strength, better durability and faster construction speed.

[0003] Among them, in the installation process of precast pile, there is the situation that the insufficient hole depth of pile hole leads to that precast pile cannot be completely put into pile hole by relying on self weight. For the above problems, the existing solution is to increase a drill rod, so that the drill rod and the precast pile are temporarily connected together, the drill rod drives the precast pile to rotate, so as to put the precast pile into the bottom of the drill hole until the precast pile reaches the predetermined height.

[0004] However, the applicant finds that the drill rod can only exert horizontal force on the precast pile, and cannot exert vertical force, if the hardness and density of the soil blocked by the bottom surface of the pile hole are too large, even if the precast pile is driven to rotate by the drill rod, it is also difficult to drive the precast pile to break the soil blocked by the bottom surface of the pile hole, so the precast pile cannot continue to sink. SUMMARY

[0005] In view of the above shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a send pile device of embedded precast pile, which solves the problem that the precast pile cannot break the bottom surface of the pile hole and cannot be completely inserted into the pile hole.

[0006] The technical scheme adopted by the utility model to solve its technical problem is a send pile device of embedded precast pile, comprising:

[0007] A drill rod;

[0008] A connecting piece has a first connecting end and a second connecting end opposite to each other, the first connecting end is detachably connected with the drill rod, the connecting piece has a hollow space penetrating through the second connecting end, one end of the precast pile can be inserted into the hollow space from the second connecting end and detachably connected with the connecting piece,

[0009] A hydraulic rod is further arranged in the hollow space, the hydraulic rod comprises a cylinder body and a telescopic rod slidable relative to the cylinder body, the cylinder body is fixedly connected to the connecting piece, and the telescopic rod can abut against the precast pile to apply downward force to the precast pile.

[0010] Further, an abutting plate is connected to one end of the telescopic rod, and the abutting plate can abut against the end of the precast pile.

[0011] Further, the drill rod and the hydraulic rod share an oil path.

[0012] Further, a first oil supply path and a first oil return path for driving the drill rod, and a second oil supply path and a second oil return path for driving the hydraulic rod are further included, the second oil supply path communicates with the first oil supply path, and the second oil return path communicates with the first oil return path.

[0013] Further, a plurality of protrusions are arranged on the peripheral wall of the precast pile.

[0014] A clamping groove is arranged on the peripheral wall of the connecting piece, and the connecting piece is rotated relative to the precast pile so that the protrusions are clamped into or out of the clamping groove.

[0015] Further, the clamping groove comprises an inclined segment and a horizontal segment connected to each other, and the end of the inclined segment away from the horizontal segment communicates with the second connecting end.

[0016] The inclined segment gradually inclines upward along the direction towards the horizontal segment.

[0017] Further, the horizontal segment has a bottom surface, and the height of the bottom surface is equal everywhere.

[0018] Further, the horizontal segment has a bottom surface, and the height of the bottom surface gradually decreases along the direction away from the inclined segment.

[0019] Further, the horizontal segment has a bottom surface, and a recess is arranged at the end of the bottom surface away from the inclined segment, and the height of the recess is lower than the height of the bottom surface.

[0020] Further, the protrusions can enter or exit the horizontal segment through the inclined segment.

[0021] Compared with the prior art, the utility model has at least the following beneficial effects:

[0022] (1) A hydraulic rod is arranged in the connecting piece, and through the extension and contraction of the hydraulic rod, the telescopic rod can abut against the precast pile and apply a downward force to the precast pile, so that the precast pile can break the soil blocked by the bottom surface of the pile hole, and the precast pile can completely extend into the pile hole and sink to the predetermined height.

[0023] (2) The end of the telescopic rod is provided with an abutting plate, the hydraulic rod drives the abutting plate to contact the end of the precast pile and apply a downward force to the precast pile when the hydraulic rod is extended or retracted, so as to increase the stress area of the precast pile and make the precast pile have a more stable posture when breaking the soil blocked at the bottom of the pile hole, and prevent the pile body from being deflected. Meanwhile, the phenomenon that the telescopic rod directly contacts the precast pile and causes damage to the precast pile can be avoided.

[0024] (3) The protrusion is arranged on the peripheral wall of the precast pile, the clamping groove is arranged on the connecting piece, the connecting piece is driven to rotate by the drill rod, and then the protrusion is rotated into or out of the clamping groove, so that the precast pile and the connecting piece are quickly connected and disassembled. During the disassembly and connection of the precast pile and the connecting piece, only the connecting piece needs to be rotated, and the precast pile does not need to make any action, so that the connection and disassembly of the precast pile and the connecting piece are more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a sectional view of the pile feeding device and the precast pile in the embodiment;

[0026] Figure 2 is a structural schematic view of the connecting piece in the embodiment;

[0027] Figure 3 is a structural schematic view of the hydraulic rod and the abutting plate in the embodiment;

[0028] Figure 4 is a structural schematic view of the clamping groove in the embodiment;

[0029] In the drawings:

[0030] 100, connecting piece; 110, clamping groove; 111, inclined section; 112, horizontal section; 113, recess; 200, precast pile; 300, hydraulic rod; 310, oil inlet; 320, oil outlet; 400, abutting plate; 500, drill rod. DETAILED DESCRIPTION

[0031] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0032] Please refer to Figures 1-4 The utility model discloses a pile feeding device of buried precast pile 200, it includes:

[0033] Drill rod 500;

[0034] The connecting piece 100 has a first connecting end and a second connecting end opposite to each other, the first connecting end is detachably connected with the drill pipe 500, the connecting piece 100 has a hollow space penetrating through the second connecting end, one end of the precast pile 200 can be inserted into the hollow space through the second connecting end and is detachably connected with the connecting piece 100.

[0035] A hydraulic rod 300 is further arranged in the hollow space, the hydraulic rod 300 comprises a cylinder and a telescopic rod which can slide relative to the cylinder, the cylinder is fixedly connected with the connecting piece 100, and the telescopic rod can abut against the precast pile 200 to apply a downward force to the precast pile 200.

[0036] The hydraulic rod 300 is arranged in the connecting piece 100, through the extension and contraction of the hydraulic rod 300, the telescopic rod can abut against the precast pile 200 and apply a downward force to the precast pile 200, so that the precast pile 200 can break the soil at the bottom of the pile hole, and the precast pile 200 can be completely inserted into the pile hole and sunk to a predetermined height.

[0037] Specifically, the connecting piece 100 is first connected with the drill pipe 500, then the precast pile 200 is installed on the connecting piece 100, and finally the drill pipe 500 is driven to descend by an external power head until the precast pile 200 is placed in the pile hole.

[0038] If the precast pile 200 reaches the predetermined depth at this time, adjustment is not needed, and the next process can be entered; if the precast pile 200 does not reach the predetermined depth at this time, the hydraulic rod 300 needs to be extended to apply a downward force to the precast pile 200, so that the precast pile 200 breaks the soil at the bottom of the pile hole, and finally the precast pile 200 is sunk to the predetermined depth.

[0039] Further, an abutting plate 400 is further connected to one end of the telescopic rod, and the abutting plate 400 can abut against the end of the precast pile 200.

[0040] Specifically, the end of the telescopic rod is provided with the abutting plate 400, when the hydraulic rod 300 is extended and contracted, the abutting plate 400 is driven to contact the end of the precast pile 200 and apply a downward force to the precast pile 200, so as to increase the force receiving area of the precast pile 200, and the precast pile 200 has a more stable posture when breaking the soil at the bottom of the pile hole, and the pile body is prevented from being deflected. Meanwhile, the phenomenon that the telescopic rod directly contacts the precast pile 200 and damages the precast pile 200 can be avoided.

[0041] Further, the drill pipe 500 and the hydraulic rod 300 share an oil circuit.

[0042] Specifically, an oil inlet 310 and an oil outlet 320 are arranged at the top end of the hydraulic rod 300, and the oil inlet 310 and the oil outlet 320 are respectively inserted into the oil inlet and the oil outlet on the drill rod 500, so that the drill rod 500 is directly driven to drive the hydraulic rod 300 to stretch and retract, and the downward force is applied to the precast pile 200.

[0043] Further, the first oil supply oil path and the first oil return oil path for driving the drill rod 500 and the second oil supply oil path and the second oil return oil path for driving the hydraulic rod 300 are further included, the second oil supply oil path is communicated with the first oil supply oil path, and the second oil return oil path is communicated with the first oil return oil path.

[0044] Further, a valve is arranged on each oil path to disconnect or open the current oil path. For example, when the hydraulic rod 300 needs to stretch and retract, the valves on the first oil supply oil path and the first oil return oil path need to be closed, so that the oil pressure is fully applied to the second oil supply oil path and the second oil return oil path. At the same time, it is ensured that the connecting piece 100 does not rotate when the downward force is applied to the precast pile 200.

[0045] Further, a plurality of protrusions are arranged on the peripheral wall of the precast pile 200.

[0046] The connecting piece 100 is provided with a clamping groove 110, and the connecting piece 100 rotates relative to the precast pile 200 to make the protrusions enter or exit the clamping groove 110.

[0047] Specifically, the protrusions are arranged on the peripheral wall of the precast pile 200, and the clamping groove 110 is arranged on the connecting piece 100. The connecting piece 100 is rotated by the drill rod 500, and then the protrusions enter or exit the clamping groove 110, so as to realize the quick connection and disassembly between the precast pile 200 and the connecting piece 100.

[0048] It is worth mentioning that during the disassembly and connection of the precast pile 200 and the connecting piece 100, only the connecting piece 100 needs to be rotated, and the precast pile 200 does not need to make any action, so that the connection and disassembly of the two are more convenient.

[0049] Further, the clamping groove 110 includes an inclined section 111 and a horizontal section 112 connected to each other, and one end of the inclined section 111 away from the horizontal section 112 is communicated with the second connecting end.

[0050] The inclined section 111 gradually inclines upward in the direction toward the horizontal section 112.

[0051] Specifically, the inclined section 111 is accompanied by a change in the height direction, at which time the connecting piece 100 needs to move downward, while the drill rod 500 is vertically connected to the driving end of the power head that can be displaced up and down, and the change in the height can be easily achieved by adjusting the vertical position of the power head through the construction equipment.

[0052] It can be seen that the setting of the inclined section 111 does not greatly increase the difficulty of disassembling the connecting piece 100 and the precast pile 200. Instead, the setting of the inclined section 111 can guide the protrusion to gradually enter or exit the horizontal section 112, thereby playing a guiding role.

[0053] Further, the horizontal section 112 has a bottom surface, and the height of the bottom surface is equal everywhere.

[0054] Specifically, the height of the bottom surface of the horizontal section 112 is equal everywhere, and the protrusion can be stopped at any position of the horizontal section 112. The advantage of this scheme is that the clamping groove 110 is easy to process, but the locking force of the precast pile 200 is insufficient.

[0055] Further, the horizontal section 112 has a bottom surface, and the height of the bottom surface gradually decreases away from the inclined section 111.

[0056] The bottom surface of the horizontal section 112 gradually slopes downward, and when the protrusion is at the lowest position of the bottom surface, the bottom surface at the remaining higher positions has a constraint on the protrusion, thereby increasing the difficulty of the protrusion to exit the clamping groove 110 and enhancing the locking force.

[0057] Specifically, if the protrusion exits the clamping groove 110, the clamping groove 110 needs to slide on the ground in the direction toward the inclined section 111, and in this process, the height of the bottom surface continuously increases, and the protrusion needs to continuously overcome the gravity of the precast pile 200, thereby increasing the difficulty of the protrusion to exit the clamping groove 110 in a non-natural state and enhancing the locking force of the precast pile 200.

[0058] Further, the horizontal section 112 has a bottom surface, and the bottom surface is provided with a recessed portion 113 at an end away from the inclined section 111, and the height of the recessed portion 113 is lower than the height of the bottom surface.

[0059] Specifically, the bottom surface is recessed downward to form a recessed portion 113, and when the protrusion extends into the recessed portion 113, the protrusion can be locked, thereby further enhancing the locking force of the precast pile 200.

[0060] Of course, the recessed portion 113 can be arranged at any position of the bottom surface, and the present application arranges the recessed portion 113 at an end of the bottom surface away from the inclined section 111, which can facilitate positioning of the protrusion, thereby facilitating operation.

[0061] Specifically, when the protrusion enters the horizontal section 112 from the inclined section 111 and continues to move along the horizontal section 112 until the protrusion abuts against the side wall of the horizontal section 112, at this time, the protrusion is just above the recess 113, then only need to lower the connecting piece 100, drive the protrusion to extend into the recess 113.

[0062] It can be known that the recess 113 is arranged at the end of the horizontal section 112, the protrusion can be positioned by the side wall of the horizontal section 112, and the step of aligning the protrusion with the recess 113 is omitted when the precast pile 200 is connected, and the operation is more convenient.

[0063] Further, the protrusion can enter or exit the horizontal section 112 from the inclined section 111.

[0064] The protrusion can be in a cylindrical shape, a cuboid or a prism.

[0065] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0066] In addition, in the present application, the description such as "first", "second", "one" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0067] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be broadly understood, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0068] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that ordinary skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

Claims

1. A pile delivery apparatus for driven precast piles, characterised in that, The utility model relates to a prefabricated pile driving device, comprising: a drill rod; a connecting piece having a first connecting end and a second connecting end opposite to each other, the first connecting end being detachably connected with the drill rod, the connecting piece having a hollow space passing through the second connecting end, one end of the prefabricated pile being capable of being extended into the hollow space from the second connecting end and being detachably connected with the connecting piece; a hydraulic rod being further arranged in the hollow space, the hydraulic rod comprising a cylinder and a telescopic rod capable of sliding relative to the cylinder, the cylinder being fixedly connected with the connecting piece, the telescopic rod being capable of abutting against the prefabricated pile to apply a downward force to the prefabricated pile.

2. The pile feeding device of a driven precast pile according to claim 1, wherein, a contact plate being further connected with one end of the telescopic rod, the contact plate being capable of abutting against the end of the prefabricated pile.

3. The pile feeding device of the embedded precast pile according to claim 1, characterized in that, the drill rod and the hydraulic rod sharing an oil circuit.

4. The pile feeding device of a driven precast pile according to claim 3, wherein first oil supply and return oil circuits for driving the drill rod and second oil supply and return oil circuits for driving the hydraulic rod, the second oil supply circuit being communicated with the first oil supply circuit, and the second return oil circuit being communicated with the first return oil circuit.

5. The pile delivery apparatus of any one of claims 1-4, wherein, a plurality of protrusions being arranged on the peripheral wall of the prefabricated pile; a clamping groove being arranged on the peripheral wall of the connecting piece, the connecting piece being rotated relative to the prefabricated pile to make the protrusions enter or exit the clamping groove.

6. The pile delivery apparatus of a driven precast pile according to claim 5, wherein the clamping groove comprising an inclined segment and a horizontal segment connected with each other, one end of the inclined segment away from the horizontal segment being communicated with the second connecting end; wherein the inclined segment gradually inclines upward along the direction towards the horizontal segment.

7. The pile delivery apparatus of a driven precast pile according to claim 6, wherein the horizontal segment having a bottom surface, the height of the bottom surface being equal everywhere.

8. The pile feeding device of the embedded precast pile according to claim 6, characterized in that, the horizontal segment having a bottom surface, the height of the bottom surface gradually decreasing along the direction away from the inclined segment.

9. The pile feeding device of a driven precast pile according to claim 6, wherein the horizontal segment having a bottom surface, one end of the bottom surface away from the inclined segment being provided with a recess, the height of the recess being lower than the height of the bottom surface.

10. The pile feeding device of a driven precast pile according to claim 6, wherein the protrusions being capable of entering or exiting the horizontal segment from the inclined segment.

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