Large-diameter precast pile driver

Abstract

The utility model relates to the technical field of pile driving equipment, in particular to a large-diameter precast pile driver which comprises a fixed arm fixedly installed at the top of a base, a telescopic rod is fixedly installed at the top of the fixed arm, a hydraulic hammer is installed at the output end of the telescopic rod, and a precast pile is arranged at the bottom of the hydraulic hammer. Two supporting arms are installed on the inner side of the base in a sliding mode, and a first supporting frame and a second supporting frame are fixedly installed on the left sides of the supporting arms from top to bottom. A second two-way screw rod is driven by a third motor to rotate, so that a second connecting rod drives a corresponding second clamping block to move in opposite directions, balls are in clamping and rolling contact with the precast pile, and the precast pile can be stably stressed and vertically driven into soil in the piling process; the precast pile is arranged in the pile driving process, so that the precast pile is prevented from deviating due to stress in the pile driving process, the precast pile can be smoothly driven into soil from loose upper-layer soil, the precast pile is prevented from being obliquely driven in the soil, and subsequent pile driving operation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of piling equipment technology, specifically a large-diameter precast pile driving machine. Background Technology

[0002] Precast piles are piles of various materials and forms made in factories or on construction sites, such as wooden piles, concrete square piles, prestressed concrete pipe piles, and steel piles. They are driven, pressed, or vibrated into the soil using pile driving equipment.

[0003] During construction, if the length of a single pile does not reach the depth specified in the design, the precast piles need to be connected one by one and driven downwards until they reach the designed depth.

[0004] However, during the continuous piling process, it is necessary to consider the possibility that the precast piles may shift in the soil after being stressed during the piling process. When the soil above the construction site is loose, the first precast pile is easily driven off-center, which will affect the subsequent piling operations. Utility Model Content

[0005] The purpose of this utility model is to provide a large-diameter precast pile driving machine with the characteristic of vertical pile driving.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a large-diameter precast pile driving machine, comprising a fixed arm fixedly installed on the top of a base, a telescopic rod fixedly installed on the top of the fixed arm, a hydraulic hammer installed at the output end of the telescopic rod, a precast pile set at the bottom of the hydraulic hammer, two support arms slidably installed on the inner side of the base, a first support frame and a second support frame fixedly installed from top to bottom on the left side of the support arm, two first connecting rods slidably installed on the inner side of the first support frame, a first movable rod fixedly installed at one end of the first connecting rod, a first clamping block fixedly installed at one end of the first movable rod, two second connecting rods slidably installed on the inner side of the second support frame, a second movable rod fixedly installed at one end of the second connecting rod, a second clamping block fixedly installed at one end of the second movable rod, and a ball bearing rolled on one side of the second clamping block.

[0007] To facilitate the transportation of precast piles, as a preferred embodiment of this utility model of a large-diameter precast pile driving machine, two first motors are fixedly installed on the right side of the base. The output ends of the first motors are equipped with threaded rods, and the two threaded rods are threadedly installed one-to-one with the two support arms.

[0008] For ease of clamping, in a preferred embodiment of this utility model of a large-diameter precast pile driving machine, a second motor is fixedly installed on one side of the first support frame, a first bidirectional lead screw is installed at the output end of the second motor, and two first connecting rods are symmetrically threaded on the outside of the first bidirectional lead screw.

[0009] For ease of limitation, in a preferred embodiment of this utility model of a large-diameter precast pile driving machine, a third motor is fixedly installed on one side of the second support frame, and a second bidirectional lead screw is installed at the output end of the third motor, with two second connecting rods symmetrically threaded on the outside of the second bidirectional lead screw.

[0010] For ease of stable clamping, in a preferred embodiment of this utility model of a large-diameter precast pile driver, the first movable rod is slidably sleeved with the support arm, the second movable rod is slidably sleeved with the support arm, and the first movable rod is located above the second movable rod.

[0011] To facilitate pile driving, in a preferred embodiment of this utility model of a large-diameter precast pile driving machine, the first clamping block is in fixed contact with the precast pile, and the ball bearings are in rolling contact with the precast pile.

[0012] To facilitate pile driving, in a preferred embodiment of this utility model of a large-diameter precast pile driving machine, a cylinder is fixedly installed on the top of the hydraulic hammer, and the cylinder is slidably sleeved with the fixed arm.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] The third motor drives the second bidirectional lead screw to rotate, which in turn causes the second connecting rod to drive the corresponding second clamping block to move in opposite directions. This allows the ball bearings to clamp and roll the precast pile, ensuring that the precast pile is driven vertically into the soil during the piling process. This prevents the precast pile from shifting during the piling process and allows it to be driven smoothly into the loose upper soil layer, avoiding the precast pile being driven crookedly in the soil and facilitating subsequent piling operations. Attached Figure Description

[0015] Figure 1 This is a reference drawing for the use of this utility model;

[0016] Figure 2 This is a top-down perspective view of the structure of this utility model.

[0017] Figure 3 This is a rear top view of the three-dimensional structure of this utility model;

[0018] Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0019] In the diagram: 1. Base; 2. Fixed arm; 3. Telescopic rod; 4. Hydraulic hammer; 5. Precast pile; 6. Support arm; 7. First clamping block; 8. Second clamping block; 9. Ball bearing; 10. Cylinder; 11. First motor; 12. Threaded rod; 13. First support frame; 14. Second motor; 15. First double-acting screw; 16. Second support frame; 17. Third motor; 18. Second double-acting screw; 19. First connecting rod; 20. First movable rod; 21. Second movable rod; 22. Second connecting rod. Detailed Implementation

[0020] Please see Figures 1 to 4 A large-diameter precast pile driving machine includes a fixed arm 2 fixedly installed on the top of a base 1, a telescopic rod 3 fixedly installed on the top of the fixed arm 2, a hydraulic hammer 4 installed at the output end of the telescopic rod 3, a precast pile 5 set at the bottom of the hydraulic hammer 4, two support arms 6 slidably installed on the inner side of the base 1, a first support frame 13 and a second support frame 16 fixedly installed on the left side of the support arm 6 from top to bottom, two first connecting rods 19 slidably installed on the inner side of the first support frame 13, a first movable rod 20 fixedly installed at one end of the first connecting rod 19, a first clamping block 7 fixedly installed at one end of the first movable rod 20, two second connecting rods 22 slidably installed on the inner side of the second support frame 16, a second movable rod 21 fixedly installed at one end of the second connecting rod 22, a second clamping block 8 fixedly installed at one end of the second movable rod 21, and a ball bearing 9 rotatably installed on one side of the second clamping block 8.

[0021] In this embodiment: by setting the first clamping block 7, the precast pile 5 can be clamped and fixed, which facilitates the clamping and feeding of the precast pile 5. By setting the second clamping block 8 and the ball bearing 9, the precast pile 5 can be clamped, keeping the precast pile 5 in a vertical state. The ball bearing 9 clamps and rolls against the precast pile 5, which ensures that the precast pile 5 is under stable force and can be driven vertically into the soil during the pile driving process, preventing the precast pile 5 from shifting under force during the pile driving process.

[0022] As a technical optimization of this utility model, two first motors 11 are fixedly installed on the right side of the base 1. The output end of the first motor 11 is equipped with a threaded rod 12, and the two threaded rods 12 are threadedly installed in a one-to-one correspondence with the two support arms 6.

[0023] In this embodiment: by setting a first motor 11, it is convenient to drive the threaded rod 12 to rotate, so that the threaded rod 12 drives the support arm 6 to move along the inner side of the base 1, and feeds the precast pile 5 held by the first clamping block 7 and the second clamping block 8 to the position below the hydraulic hammer 4, which facilitates the pile driving operation.

[0024] As a technical optimization of this utility model, a second motor 14 is fixedly installed on one side of the first support frame 13, and a first bidirectional lead screw 15 is installed at the output end of the second motor 14. Two first connecting rods 19 are symmetrically threaded on the outside of the first bidirectional lead screw 15. A third motor 17 is fixedly installed on one side of the second support frame 16, and a second bidirectional lead screw 18 is installed at the output end of the third motor 17. Two second connecting rods 22 are symmetrically threaded on the outside of the second bidirectional lead screw 18.

[0025] In this embodiment: both the first bidirectional lead screw 15 and the second bidirectional lead screw 18 are symmetrically provided with forward and reverse threads on their outer sides. By providing a second motor 14, it is convenient to drive the first bidirectional lead screw 15 to rotate, so that the first bidirectional lead screw 15 drives the two symmetrically arranged first connecting rods 19 on their outer sides to move relative to each other. The first connecting rods 19 drive the corresponding first clamping blocks 7 to clamp and fix the precast pile 5. By providing a third motor 17, it is convenient to drive the second bidirectional lead screw 18 to rotate, so that the second bidirectional lead screw 18 drives the two symmetrically arranged second connecting rods 22 on their outer sides to move relative to each other. The second connecting rods 22 drive the corresponding second clamping blocks 8 to clamp the precast pile 5, so that the ball bearings 9 roll into contact with the precast pile 5, and the precast pile 5 is clamped stably, which is convenient for transportation, loading and piling operations.

[0026] As a technical optimization of this utility model, the first movable rod 20 is slidably sleeved with the support arm 6, the second movable rod 21 is slidably sleeved with the support arm 6, and the first movable rod 20 is located above the second movable rod 21; the first clamping block 7 is in fixed contact with the precast pile 5, and the ball bearing 9 is in rolling contact with the precast pile 5.

[0027] In this embodiment: by setting a first movable rod 20 and a second movable rod 21, the first movable rod 20 can restrict the movement of the first clamping block 7, which facilitates the stable movement of the first clamping block 7. The second movable rod 21 restricts the movement of the second clamping block 8, which enables the stable movement of the second clamping block 8. The first clamping block 7 and the second clamping block 8 clamp the precast pile 5 together, which facilitates the feeding of the precast pile 5. The second clamping block 8 clamps the precast pile 5 alone, which makes the ball bearing 9 roll into contact with the precast pile 5, which facilitates the restriction of the precast pile 5 to be driven vertically into the soil during the pile driving process.

[0028] As a technical optimization of this utility model, a cylinder 10 is fixedly installed on the top of the hydraulic hammer 4, and the cylinder 10 is slidably sleeved with the fixed arm 2.

[0029] In this embodiment, by setting the cylinder 10, the movement of the hydraulic hammer 4 is vertically restricted, which enables the hydraulic hammer 4 to maintain vertical movement, making it easier to drive the precast piles 5.

[0030] Working principle: In use, firstly, move the support arm 6 out of the position below the hydraulic hammer 4. Then, place the precast pile 5 to be used between the two first clamping blocks 7 and the two second clamping blocks 8. Then, start the second motor 14 to drive the first bidirectional lead screw 15 to rotate, so that the first bidirectional lead screw 15 drives the two first connecting rods 19 to move relative to each other. This causes the first connecting rods 19 to drive the corresponding first clamping blocks 7 to clamp and fix the precast pile 5. Then, start the third motor 17 to drive the second bidirectional lead screw 18 to rotate, so that the second bidirectional lead screw 18 drives the two second connecting rods 22 to move relative to each other. This causes the second connecting rods 22 to drive the corresponding second clamping blocks 8 to clamp and fix the precast pile 5. The precast pile 5 is clamped, so that the ball bearing 9 rolls in contact with the precast pile 5, stabilizing the precast pile 5. Then, the first motor 11 is started to drive the threaded rod 12 to rotate, so that the threaded rod 12 drives the support arm 6 to move along the inner side of the base 1, transporting the precast pile 5 to a position below the hydraulic hammer 4. Then, the second motor 14 is started to drive the first bidirectional screw 15 to rotate in the opposite direction, so that the first bidirectional screw 15 drives the two first connecting rods 19 to move relative to each other, so that the first clamping block 7 releases its grip on the precast pile 5. Then, the hydraulic hammer 4 is driven downward by the telescopic rod 3 to drive the top of the precast pile 5 vertically into the soil.

[0031] All standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification are prior art known to those skilled in the art. All electrical equipment in this utility model is powered by an external power supply. The circuits, electronic components and modules involved are all prior art, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve the improvement of software and methods.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A large-diameter precast pile driving machine, comprising a fixed arm (2) fixedly installed on the top of a base (1), a telescopic rod (3) fixedly installed on the top of the fixed arm (2), a hydraulic hammer (4) installed at the output end of the telescopic rod (3), and a precast pile (5) provided at the bottom of the hydraulic hammer (4), characterized in that: Two support arms (6) are slidably installed on the inner side of the base (1). A first support frame (13) and a second support frame (16) are fixedly installed on the left side of the support arm (6) from top to bottom. Two first connecting rods (19) are slidably installed on the inner side of the first support frame (13). A first movable rod (20) is fixedly installed at one end of the first connecting rod (19). A first clamping block (7) is fixedly installed at one end of the first movable rod (20). Two second connecting rods (22) are slidably installed on the inner side of the second support frame (16). A second movable rod (21) is fixedly installed at one end of the second connecting rod (22). A second clamping block (8) is fixedly installed at one end of the second movable rod (21). A ball bearing (9) is slidably installed on one side of the second clamping block (8).

2. The large-diameter precast pile driving machine according to claim 1, characterized in that: Two first motors (11) are fixedly installed on the right side of the base (1). The output end of the first motor (11) is equipped with a threaded rod (12). The two threaded rods (12) are threadedly installed in correspondence with the two support arms (6).

3. The large-diameter precast pile driving machine according to claim 1, characterized in that: A second motor (14) is fixedly installed on one side of the first support frame (13). A first bidirectional lead screw (15) is installed at the output end of the second motor (14). Two first connecting rods (19) are symmetrically threaded on the outside of the first bidirectional lead screw (15).

4. The large-diameter precast pile driving machine according to claim 1, characterized in that: A third motor (17) is fixedly installed on one side of the second support frame (16). A second bidirectional lead screw (18) is installed at the output end of the third motor (17). Two second connecting rods (22) are symmetrically threaded on the outside of the second bidirectional lead screw (18).

5. A large-diameter precast pile driving machine according to claim 1, characterized in that: The first movable rod (20) is slidably sleeved with the support arm (6), and the second movable rod (21) is slidably sleeved with the support arm (6). The first movable rod (20) is located above the second movable rod (21).

6. The large-diameter precast pile driving machine according to claim 1, characterized in that: The first clamping block (7) is in fixed contact with the precast pile (5), and the ball bearing (9) is in rolling contact with the precast pile (5).

7. A large-diameter precast pile driving machine according to claim 1, characterized in that: A cylinder (10) is fixedly installed on the top of the hydraulic hammer (4), and the cylinder (10) is slidably sleeved with the fixed arm (2).

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