A buried precast pile delivery device

Abstract

The utility model relates to the technical fields of pile delivery equipment and concretely discloses a buried precast pile delivery device, which comprises a hydraulic oil cylinder, a clamping piece and a connecting rod, the hydraulic oil cylinder is configured to be fixedly connected with a drill rod of a pile driver, the clamping piece is configured to be detachably connected with a clamping groove on the end face of the precast pile, one end of the connecting rod is connected with a piston rod of the hydraulic oil cylinder, and the other end is connected with the clamping piece, when the piston rod of the hydraulic oil cylinder is retracted, the clamping piece can be driven by the connecting rod to slide into the clamping groove to lock the drill rod and the precast pile, when the piston rod of the hydraulic oil cylinder is stretched, the clamping piece can be driven by the connecting rod to be separated from the clamping groove to unlock the drill rod and the precast pile, the connecting structure of the precast pile is simple, the operation is convenient, the installation efficiency of the precast pile is improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of pile foundation construction, and specifically to an embedded precast pile driving device. Background Technology

[0002] Precast piles are a common foundation engineering component, widely used in construction, bridges, docks and other projects. During the construction of precast piles, pile driving is a key step. The most common method for driving piles is the embedded pile driving method, which mainly uses the connection between the pile driver drill rod and the precast pile. The connection method between the drill rod and the precast pile has a significant impact on the efficiency and safety of pile driving.

[0003] In the prior art, there are already a variety of precast pile driving devices. For example, Chinese patent CN104532840A discloses an embedded precast pile driving rod and its driving method. The driving rod includes a clamp with a cylindrical cavity with a lower opening. The clamp has at least two open slots with equal arc around the circumference of the cylindrical cavity, which can be quickly tightened or loosened by rotating the clamp in both directions. The top of the embedded precast pile is fixed with a locking block that engages with the open slots. Similarly, Chinese patent CN204370420U also discloses an embedded precast pile driving rod with a similar structure to the above patent, which is connected by the engagement of the clamp and the locking block at the top of the pile.

[0004] However, the connection method of welding the clamping blocks on the top end plate of the precast pile, which is commonly used in the above-mentioned existing technologies, has many problems. First, the welding quality is difficult to guarantee, and the clamping blocks are prone to falling off, causing the pile to fall and resulting in quality and safety accidents. Second, the welding process is labor-intensive and time-consuming, reducing construction efficiency. Third, after the pile is driven, the removal of the device is not convenient. Finally, after the excavation is completed, removing the clamping blocks requires a lot of manpower, increasing construction costs. These problems seriously affect the safety, efficiency and economy of precast pile construction. Utility Model Content

[0005] This utility model addresses the aforementioned problems and aims to provide an embedded precast pile driving device that can be operated without welding a clamp on the pile top, thereby improving driving efficiency and ensuring good safety performance.

[0006] To achieve the above objectives, this utility model provides an embedded precast pile driving device, comprising:

[0007] Hydraulic cylinder, which is detachably installed at the lower end of the drill rod of the piling machine;

[0008] The snap-fit ​​connector is configured for a detachable connection with a slot on the end face of the precast pile;

[0009] A connecting rod, one end of which is connected to the piston rod of the hydraulic cylinder, and the other end of which is connected to the snap-fit ​​component;

[0010] When the piston rod of the hydraulic cylinder retracts, the connecting rod can drive the snap-fit ​​component to slide into the slot to connect the drill rod and the precast pile; when the piston rod of the hydraulic cylinder extends, the connecting rod can drive the snap-fit ​​component to disengage from the slot to separate the drill rod and the precast pile.

[0011] According to the above-described embedded precast pile driving device, there are multiple snap-fit ​​members and multiple connecting rods. The multiple connecting rods are arranged at intervals around the piston rod along the circumference of the piston rod, and each connecting rod is connected to a corresponding snap-fit ​​member at the end away from the piston rod.

[0012] According to the above-described embedded precast pile driving device, the piston rod is arranged vertically, and a plurality of connecting rods are inclinedly arranged between the piston rod and the snap-fit ​​member, with one end of the connecting rod hinged to the piston rod and the other end hinged to the snap-fit ​​member.

[0013] According to the above-described embedded precast pile driving device, a connecting seat is fixedly connected to the lower end of the piston rod, a connecting plate is provided on the snap-fit ​​member, one end of the connecting rod is hinged to the outside of the connecting seat by a pin, and the other end is hinged to the top of the connecting plate by a pin.

[0014] According to the above-described embedded precast pile driving device, the piston rod is arranged horizontally in the cylinder body of the hydraulic cylinder, and the connecting rods are all arranged horizontally between the piston rod and the snap-fit ​​member. One end of the connecting rod is fixedly connected to the piston rod, and the other end is fixedly connected to the snap-fit ​​member.

[0015] According to the above-described embedded precast pile driving device, the snap-fit ​​component is provided with a connecting plate, and one end of the connecting rod is fixedly connected to the snap-fit ​​component through a fixed shaft.

[0016] According to the above-described embedded precast pile driving device, there are four clamping parts, four connecting rods, and four clamping slots. The four clamping slots are arranged circumferentially on the end face of the precast pile. One end of the four connecting rods is arranged circumferentially on the outside of the piston rod, and the other end is connected to the four clamping parts respectively.

[0017] According to the above-described embedded precast pile driving device, the slot is configured as a dovetail groove with a trapezoidal cross-section, and the connecting member is configured as a dovetail block with a cross-section matching the cross-sectional shape of the dovetail groove.

[0018] According to the above-described embedded precast pile driving device, the slot is a T-shaped slot, and the connecting member is a T-shaped block whose cross-section matches the cross-sectional shape of the T-shaped slot.

[0019] According to the above-described embedded precast pile driving device, the hydraulic cylinder is equipped with a hydraulic oil pipe. When the hydraulic cylinder is connected to the bottom of the drill rod, the hydraulic oil pipe can be connected to the hydraulic oil circuit of the drill rod.

[0020] This utility model has the following beneficial effects:

[0021] 1. The hydraulic cylinder drives the snap-fit ​​component to detachably connect with the snap-fit ​​slot on the end face of the precast pile through the connecting rod. This avoids the problems of poor welding quality and easy detachment of the snap-fit ​​block that exist in the traditional welding snap-fit ​​block method. At the same time, after the pile is driven, you only need to control the hydraulic cylinder to detach the snap-fit ​​component from the snap-fit ​​slot. The operation is simple and there is no need for additional manual removal of the snap-fit ​​block, which greatly reduces the construction cost and safety risk.

[0022] 2. By opening the hydraulic system during the pile driving process, this device extends from the inner wall of the pipe pile to fix the pipe pile, which can meet the construction of pile materials with different diameters and has strong versatility for precast piles of different specifications and sizes.

[0023] 3. Since this device can be installed together with the drill rod, the drill rod can drive it to rotate, which has the function of rotating pile driving. When the self-weight of the precast pile causes high resistance to pile driving, it can improve the pile driving efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the pile driving device and precast pile assembly structure in Embodiment 1;

[0025] Figure 2 This is a schematic diagram of the pile driving device structure in Embodiment 1;

[0026] Figure 3 This is a schematic diagram of the precast pile end face structure in Example 1;

[0027] Figure 4 This is a schematic diagram of the pile driving device and precast pile assembly structure in Embodiment 2;

[0028] Figure 5 This is a schematic diagram of the precast pile structure in Example 2.

[0029] In the picture:

[0030] 100. Hydraulic cylinder; 110. Piston rod; 111. Connecting seat; 120. Hydraulic oil pipe; 200. Snap-fit ​​part; 210. Connecting plate; 300. Connecting rod; 310. Pin; 320. Fixed shaft; 400. Precast pile; 410. Slot. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] Example 1

[0033] like Figure 1-3 As shown, an embedded precast pile driving device includes a hydraulic cylinder 100, a clamping component 200, and a connecting rod 300.

[0034] The hydraulic cylinder 100 is detachably mounted to the lower end of the drill rod of the piling machine. The locking member 200 is configured to be detachably connected to the locking groove 410 on the end face of the precast pile 400. The connecting rod 300 connects the hydraulic cylinder 100 and the locking member 200. One end of the connecting rod 300 is connected to the piston rod 110 of the hydraulic cylinder 100, and the other end is connected to the locking member 200. When the piston rod 110 of the hydraulic cylinder 100 retracts, the locking member 200 can be driven to slide into the locking groove 410 through the connecting rod 300 to connect the drill rod and the precast pile 400. When the piston rod 110 of the hydraulic cylinder 100 extends, the locking member 200 can be driven to disengage from the locking groove 410 through the connecting rod 300 to separate the pile. The drill rod and the precast pile 400 do not require a locking block, making locking and unlocking of the drill rod and the precast pile 400 more convenient. When the hydraulic cylinder 100 is fixedly connected to the drill rod of the pile driver, and the hydraulic cylinder 100 drives the locking piece 200 to slide into the slot 410 through the connecting rod 300, the drill rod can drive the precast pile 400 to move up and down, thereby placing the precast pile 400 into the hole. When encountering greater resistance, the drill rod can drive the precast pile 400 to rotate to overcome the resistance, which can improve the pile driving efficiency. After the pile driving is completed, the extension of the piston rod 110 of the hydraulic cylinder 100 can separate the locking piece 200 from the slot 410, thereby facilitating the removal of the pile driving device.

[0035] In this embodiment, the working steps of the pile driving device are as follows:

[0036] 1. Install the hydraulic cylinder 100 onto the drill rod of the piling machine;

[0037] 2. The piston rod 110 of the hydraulic cylinder 100 retracts, causing the connecting rod 300 to move accordingly and converge towards the piston rod 110, thereby driving the snap-fit ​​200 to slide into the snap-fit ​​groove 410, thus achieving the connection and locking of the drill rod and the precast pile 400.

[0038] 3. The drill rod drives the precast pile 400 to move through the pile driving device, thereby placing the precast pile 400 into the preset hole. During this process, if a large resistance is encountered, the drill rod can drive the precast pile 400 to rotate, thereby overcoming the resistance and improving the pile driving efficiency.

[0039] 4. After the pile driving is completed, the piston rod 110 of the hydraulic cylinder 100 extends, driving the connecting rod 300 to make a corresponding displacement, thereby driving the locking piece 200 to disengage from the slot 410, realizing the separation and unlocking of the drill rod and the precast pile 400, and the drill rod can bring the pile driving device out of the hole.

[0040] Furthermore, a hydraulic oil pipe 120 is provided on the hydraulic cylinder 100. When the hydraulic cylinder 100 is connected to the bottom of the drill rod, the hydraulic oil pipe 120 can be connected to the hydraulic oil circuit of the drill rod. That is, in this embodiment, the hydraulic oil circuit on the drill rod can directly supply oil to the hydraulic cylinder 100. This design enables the pile driving device to be operated directly using the hydraulic system of the pile driver itself, without the need for an additional power source, which simplifies the system structure and improves the ease of operation.

[0041] Furthermore, multiple snap-fit ​​pieces 200 and connecting rods 300 are provided. Multiple connecting rods 300 are arranged at intervals around the piston rod 110 along its circumference. Each connecting rod 300 is connected to a corresponding snap-fit ​​piece 200 at its end away from the piston rod 110. Multiple slots 410 are provided on the end face of the precast pile 400 at intervals along its circumference. The multiple slots 410 correspond one-to-one with the multiple snap-fit ​​pieces 200. This design allows multiple connecting rods 300 to share the load that needs to be borne, that is, multiple connecting rods 300 can share the weight of the precast pile 400, improve the stability of the connection between the drill rod and the precast pile 400, avoid excessive stress on a single connecting rod 300, and also improve the overall load-bearing capacity of the pile driving device.

[0042] Furthermore, the piston rod 110 is arranged vertically, and multiple connecting rods 300 are inclinedly arranged between the piston rod 110 and the locking member 200. One end of the connecting rod 300 is hinged to the piston rod 110, and the other end is hinged to the locking member 200. That is, in this embodiment, the piston rod 110 moves upward to contract and moves downward to extend. When the piston rod 110 moves upward, one end of the connecting rod 300 moves upward accordingly, and the other end will drive the locking member 200 to move towards the center of the end face of the precast pile 400, thereby allowing the locking member 200 to slide into the slot 410. When the piston rod 110 moves downward, one end of the connecting rod 300 moves downward accordingly, and the other end will drive the locking member 200 to move away from the center of the end face of the precast pile 400, thereby allowing the locking member 200 to slide out of the slot 410.

[0043] Furthermore, in order to achieve the hinge connection between the piston rod 110 and the connecting rod 300, and the hinge connection between the connecting rod 300 and the snap-fit ​​200, a connecting seat 111 is fixedly connected to the lower end of the piston rod 110, and a connecting plate 210 is provided on the snap-fit ​​200. One end of the connecting rod 300 is hinged to the outside of the connecting seat 111 through a pin 310, and the other end is hinged to the top of the connecting plate 210 through a pin 310. This hinge structure allows the connecting rod 300 to rotate around the hinge point when the piston rod 110 moves, thereby converting the linear motion of the piston rod 110 into the lateral movement of the snap-fit ​​200, and realizing the locking and unlocking functions.

[0044] In this embodiment, in order to ensure connection strength, the piston rod 110, connecting seat 111, connecting rod 300 and connecting plate 210 all need to be made of hard alloy to avoid safety accidents caused by their breakage.

[0045] Furthermore, in this embodiment, four snap-fit ​​components 200, four connecting rods 300, and four slots 410 are provided. The four slots 410 are arranged at intervals along the circumference of the end face of the precast pile 400. One end of the four connecting rods 300 is arranged at intervals along the circumference of the piston rod 110 on the outside of the piston rod 110, and the other end is connected to the four snap-fit ​​components 200 respectively. The four-point connection design makes the connection between the precast pile 400 and the drill rod more balanced and stable, and can evenly distribute the connection, avoiding local stress concentration.

[0046] In this embodiment, the slot 410 is a dovetail groove with a trapezoidal cross-section, and the width of the opening of the dovetail groove is smaller than the width of the bottom of the groove. The snap-fit ​​component 200 is a dovetail block whose cross-section matches the cross-sectional shape of the dovetail groove. This matching design of the dovetail groove and the dovetail block can prevent the snap-fit ​​component 200 from coming out of the slot 410 after being subjected to force, thereby improving the safety and reliability of the connection.

[0047] In another preferred embodiment, the slot 410 is a T-slot, and the snap-fit ​​200 is a T-block with a cross-section that matches the cross-sectional shape of the T-slot. This matching design of the T-slot and the T-block can also prevent the snap-fit ​​200 from coming out of the slot 410 after being subjected to force, and the manufacturing process is relatively simple.

[0048] Example 2

[0049] like Figure 4-5 As shown, in this embodiment, the piston rod is arranged horizontally in the cylinder body of the hydraulic cylinder 100, and the connecting rods 300 are all arranged horizontally between the piston rod and the snap-fit ​​member 200. One end of the connecting rod 300 is fixedly connected to the piston rod, and the other end is fixedly connected to the snap-fit ​​member 200. This horizontal arrangement structure design is suitable for certain specific working conditions and can be more convenient to install and operate.

[0050] In this embodiment, the snap-fit ​​component 200 is provided with a connecting plate 210, and one end of the connecting rod 300 is fixedly connected to the snap-fit ​​component 200 through a fixed shaft 320. The connection method of the fixed shaft 320 ensures the firmness and reliability of the connection between the snap-fit ​​component 200 and the connecting rod 300, and it is not easy to loosen.

[0051] This utility model discloses an embedded precast pile driving device, including a hydraulic cylinder 100, a clamping component 200, and a connecting rod 300. The hydraulic cylinder 100 is configured to be fixedly connected to the drill rod of the pile driver. The clamping component 200 is configured to be detachably connected to the groove 410 on the end face of the precast pile 400. The connecting rod 300 is configured to connect the hydraulic cylinder 100 and the clamping component 200. One end of the connecting rod 300 is connected to the piston rod 110 of the hydraulic cylinder 100, and the other end is connected to the clamping component 200. When the piston rod 110 of the hydraulic cylinder 100 retracts, the connecting rod 300 drives the locking piece 200 to slide into the slot 410 to lock the drill rod and the precast pile 400. When the piston rod 110 of the hydraulic cylinder 100 extends, the connecting rod 300 drives the locking piece 200 to disengage from the slot 410 to unlock the drill rod and the precast pile 400. The connection structure with the precast pile 400 is simple and easy to operate, which improves the installation efficiency of the precast pile 400 and reduces the labor intensity of workers.

[0052] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0053] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0054] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A precast embedded pile driving device, characterized in that, include: Hydraulic cylinder, which is detachably installed at the lower end of the drill rod of the piling machine; The snap-fit ​​connector is configured for a detachable connection with a slot on the end face of the precast pile; A connecting rod, one end of which is connected to the piston rod of the hydraulic cylinder, and the other end of which is connected to the snap-fit ​​component; When the piston rod of the hydraulic cylinder retracts, the connecting rod can drive the snap-fit ​​component to slide into the slot to connect the drill rod and the precast pile; when the piston rod of the hydraulic cylinder extends, the connecting rod can drive the snap-fit ​​component to disengage from the slot to separate the drill rod and the precast pile.

2. The embedded precast pile driving device according to claim 1, characterized in that, Multiple snap-fit ​​components and multiple connecting rods are provided. The multiple connecting rods are arranged at intervals around the piston rod in the circumferential direction. Each connecting rod is connected to a corresponding snap-fit ​​component at the end away from the piston rod.

3. The embedded precast pile driving device according to claim 2, characterized in that, The piston rod is arranged vertically, and the plurality of connecting rods are arranged obliquely between the piston rod and the snap-fit ​​member. One end of the connecting rod is hinged to the piston rod, and the other end is hinged to the snap-fit ​​member.

4. The embedded precast pile driving device according to claim 3, characterized in that, A connecting seat is fixed to the lower end of the piston rod, and a connecting plate is provided on the snap-fit ​​component. One end of the connecting rod is hinged to the outside of the connecting seat by a pin, and the other end is hinged to the top of the connecting plate by a pin.

5. The embedded precast pile driving device according to claim 2, characterized in that, The piston rod is arranged horizontally inside the hydraulic cylinder. The connecting rods are all arranged horizontally between the piston rod and the snap-fit ​​member. One end of the connecting rod is fixedly connected to the piston rod, and the other end is fixedly connected to the snap-fit ​​member.

6. The embedded precast pile driving device according to claim 5, characterized in that, The snap-fit ​​component is provided with a connecting plate, and one end of the connecting rod is fixedly connected to the snap-fit ​​component through a fixed shaft.

7. The embedded precast pile driving device according to claim 2, characterized in that, The four snap-fit ​​components, connecting rods, and slots are provided. The four slots are arranged circumferentially on the end face of the precast pile. One end of each of the four connecting rods is arranged circumferentially on the outside of the piston rod, and the other end is connected to the four snap-fit ​​components respectively.

8. A precast embedded pile driving device according to claim 1 or 2, characterized in that, The slot is configured as a dovetail groove with a trapezoidal cross-section, and the snap-fit ​​component is configured as a dovetail block with a cross-section that matches the cross-sectional shape of the dovetail groove.

9. A precast embedded pile driving device according to claim 1 or 2, characterized in that, The slot is a T-shaped slot, and the fastener is a T-shaped block whose cross-section matches the cross-sectional shape of the T-shaped slot.

10. The embedded precast pile driving device according to claim 1, characterized in that, The hydraulic cylinder is equipped with a hydraulic oil pipe. When the hydraulic cylinder is connected to the bottom of the drill rod, the hydraulic oil pipe can be connected to the hydraulic oil circuit of the drill rod.

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