Double-power-head pressurizing device

Abstract

The utility model relates to the technical field of pile drivers, in particular to a double-power-head pressurizing device which comprises a first power head, a second power head and a telescopic rod, the first power head and the second power head are two power heads of a double-power pile driver respectively, and the two ends of the telescopic rod are a first end and a second end respectively. The telescopic rod is provided with a driving source, the driving source can drive the telescopic rod to stretch out and draw back and lock the length of the telescopic rod, the telescopic rod is obliquely arranged, the first end and the second end are not located at the same horizontal height, the first end is rotationally connected with the first power head, and the second end is rotationally connected with the second power head. The second end is detachably and rotatably connected with the second power head and used for providing downward pressure for the second power head. The drilling compensation device has the effect of conveniently adjusting and controlling the drilling compensation force applied to the second power head by the first power head.

Description

Technical Field

[0001] The utility model relates to the technical field of pile drivers, in particular to a double-power head pressurizing device. Background Art

[0002] A pile driver is a type of equipment widely used in the construction of pile foundations for industrial and civil buildings, municipal administration, bridges, railways, highways and other projects. Among them, due to the limitations of factors such as column strength and transportation, a single-power-head pile driver cannot meet the requirements of deep hole drilling with a single drill rod when the drilling depth is greater than the column height. In order to meet the requirements of deep hole drilling, a double-power-head pile driver has emerged. A double-power-head pile driver is generally equipped with a No. 1 drill rod and a No. 2 drill rod, and a power head is independently set on the No. 1 drill rod and the No. 2 drill rod. The No. 1 drill rod is used for shallow drilling in the first half. After the No. 1 rod is drilled to the maximum depth, the No. 2 drill rod is connected to the No. 1 drill rod to extend the overall length of the drill rod, and the deep drilling in the second half is continued.

[0003] During the drilling process of the drill rod, the rotational power of the drill rod is provided by the power head, and the downward drilling force of the power head and the drill rod is provided by the deadweight of the power head and the drill rod. Since the geological hardness increases with depth, the weight of the No. 1 drill rod, the No. 2 drill rod and the No. 2 power head alone cannot further press down the drill rod for deep drilling, which will cause the power head to idle instead of continuing to drill downward. In the prior art, such as the patent with announcement number CN217872620U, a self-pressurized drilling mechanism for a pile driver is disclosed, including a pressurizing seat fixed to the upper end of the No. 1 power head, a push rod that can slide horizontally to the top of the No. 2 power head, and an electric push rod provided at the upper end of the No. 1 power head to drive the push rod to slide to the top of the No. 2 power head. When pressure is needed, the electric push rod is controlled to drive the push rod to slide above the No. 2 power head, and the No. 1 power head is lowered through the winch of the No. 1 power head, so that the push rod is against the upper end surface of the No. 2 power head to provide drilling compensation force for the drill pipe.

[0004] However, when using the above structure, the force applied by power head No. 1 to power head No. 2 is not convenient to adjust and control, and the gravity of power head No. 1 is often completely applied to power head No. 2. The drill bit is prone to severe wear due to excessive drilling force, resulting in a shorter service life of the drill bit. Utility Model Content

[0005] The purpose of the present application is to provide a dual power head pressurizing device that is convenient for adjusting and controlling the drilling compensation force applied by the No. 1 power head to the No. 2 power head.

[0006] In order to solve the above problems, the present application provides a dual power head pressurizing device, which adopts the following technical solutions:

[0007] A dual-power head pressurizing device comprises a No. 1 power head, a No. 2 power head and a telescopic rod, wherein the No. 1 power head and the No. 2 power head are respectively two power heads of a dual-power pile driver, the two ends of the telescopic rod are respectively a first end and a second end, the telescopic rod has a driving source, the driving source can drive the telescopic rod to extend and retract and lock the length of the telescopic rod, the telescopic rod is tilted so that the first end and the second end are not at the same horizontal height, the first end is rotatably connected to the No. 1 power head, and the second end is detachably rotatably connected to the No. 2 power head and is used to provide downward pressure to the No. 2 power head.

[0008] By adopting the above structure, the first end and the second end of the telescopic rod are located at different height positions and horizontal positions. The angle between the telescopic rod and the No. 1 power head and the No. 2 power head can be changed by controlling the distance between the first end and the second end of the telescopic rod, thereby adjusting and controlling the drilling compensation force applied by the No. 1 power head to the No. 2 power head, thereby facilitating adjustment and control, avoiding large wear of the drill bit due to excessive drilling compensation force applied by the No. 1 power head to the No. 2 power head, and improving the service life of the drill bit.

[0009] Optionally, the height of the first end is smaller than the height of the second end, and the second end is provided with a hook with an opening facing downward, and the hook is detachably hung on the No. 2 power head.

[0010] Optionally, a support block is provided on the side wall of the No. 2 power head facing the No. 1 power head, and a cross bar extending in a horizontal direction is provided on the support block, and the hook is hung on the cross bar.

[0011] Optionally, an elastic telescopic member is connected between the No. 1 power head and the telescopic rod.

[0012] By adopting the above structure, the elastic telescopic part is arranged between the No. 1 power head and the telescopic rod to provide a suspension force for the telescopic rod, so that the telescopic rod is arranged to be inclined upward or downward. In this way, by controlling the extension and retraction of the telescopic rod combined with the lifting and lowering of the No. 1 power head, the connection between the second end of the telescopic rod and the No. 2 power head can be achieved without manually connecting the second end of the telescopic rod and the No. 2 power head.

[0013] Optionally, a storage hook for hanging the telescopic rod is provided on the side wall of the No. 1 power head facing the No. 2 power head, and the storage hook is rotatably connected to the No. 1 power head.

[0014] By adopting the above structure, when the No. 1 power head is not needed to provide drilling compensation force for the No. 2 power head, the telescopic rod can be stored by hanging on the storage hook, so that the telescopic rod is not easy to interfere with other components.

[0015] Optionally, the height of the first end is greater than the height of the second end, and the second end can be rotatably pressed against the second power head.

[0016] Optionally, a pressure plate is provided on the second power head, a pressure groove is provided on the pressure plate, and the second end can be rotatably pressed in the pressure groove.

[0017] By adopting the above structure, the first limit plate and the second limit plate limit the push rod in the horizontal direction, so that when the second end is away from the first end, the push rod is not easy to slide relative to the No. 2 power head in the horizontal direction and the vertical direction, thereby ensuring that the drilling compensation force is stably applied to the No. 2 power head.

[0018] Optionally, the telescopic rod is an electric push rod or a hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the dual power head pressurizing device of Example 1 of the present application;

[0020] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0021] Figure 3 This is a schematic structural diagram of a dual-power head pressurizing device in Example 2 of the present application;

[0022] Figure 4 for Figure 3 Enlarged view of part B in the middle.

[0023] Description of reference numerals:

[0024] 10. Power head No. 1; 20. Power head No. 2; 21. Support block; 22. Cross bar; 23. Pressure plate; 231. Pressure groove; 232. First limit plate; 233. Second limit plate; 30. Telescopic rod; 31. First end; 32. Second end; 40. Hook; 50. Elastic telescopic member; 60. Storage hook. DETAILED DESCRIPTION

[0025] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0026] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following is a brief description of the present invention in conjunction with the attached Figure 1-4 The specific embodiments of the present application are described in detail.

[0028] Example 1

[0029] The embodiment of the present application discloses a dual-power head pressurizing device. The dual-power head pressurizing device includes a No. 1 power head 10, a No. 2 power head 20 and a telescopic rod 30. The No. 1 power head 10 and the No. 2 power head 20 are two power heads of a dual-power pile driver, respectively. The dual-power pile driver is provided with a winch corresponding to the No. 1 power head 10 and the No. 2 power head 20, so as to control the No. 1 power head 10 and the No. 2 power head 20 to independently rise and fall along the column.

[0030] The two ends of the telescopic rod 30 are respectively a first end 31 and a second end 32. The telescopic rod 30 has a driving source, which can drive the telescopic rod 30 to extend and retract and lock the length of the telescopic rod 30. The telescopic rod 30 is tilted so that the first end 31 and the second end 32 are not at the same horizontal height, and the first end 31 and the second end 32 are not located on the same vertical line. The first end 31 is hinged to the No. 1 power head 10, and the second end 32 is detachably rotatably connected to the No. 2 power head 20, and is used to provide downward pressure to the No. 2 power head 20. In this embodiment, the telescopic rod 30 can be an electric push rod, an oil cylinder, or a pneumatic cylinder, which can be selected according to the specific needs of use.

[0031] Reference Figure 1, the first end 31 of the telescopic rod 30 is lower than the second end 32, and the first end 31 is connected to the No. 1 power head 10 by rotation along the horizontal axis, that is, the second end of the telescopic rod 30 can rotate around the horizontal axis to get closer to or away from the No. 1 power head 10. Specifically, the first end 31 can be hinged on the side wall of the No. 1 power head 10 close to the No. 2 power head 20, or can be hinged on the upper end face or lower end face connected to the No. 1 power head 10. In this embodiment, the first end 31 is introduced by taking the example of being hinged on the side wall of the No. 1 power head 10 facing the No. 2 power head 20, and at the same time, the axis of the telescopic rod 30 can be coplanar with the axes of the No. 1 power head 10 and the No. 2 power head 20, so that the telescopic rod 30 can better transmit the force of the No. 1 power head 10 to the No. 2 power head 20.

[0032] Reference Figure 1 and Figure 2 , the second end 32 of the telescopic rod 30 can be hung on the No. 2 power head 20 to transmit a downward force to the No. 2 power head 20. Specifically, a hook 40 is fixed to the second end 32 of the telescopic rod 30, and the opening of the hook 40 is set downward. A support block 21 is provided on the No. 2 power head 20, corresponding to the first end 31 being hinged on the side wall of the No. 1 power head 10 facing the No. 2 power head 20, the support block 21 is fixed on the side wall of the No. 2 power head 20 facing the No. 1 power head 10, and a cross bar 22 extending in the horizontal direction is fixed on the support block 21, and the hook 40 can be hung on the cross bar 22 and rotate around the circumference of the cross bar 22.

[0033] The No. 1 power head 10 is also provided with an elastic telescopic member 50, which is a compression spring. The elastic telescopic member 50 is located between the No. 1 power head 10 and the telescopic rod 30, and the two ends of the elastic telescopic member 50 are respectively fixed to the side wall of the No. 1 power head 10 facing the No. 2 power head 20 and the cylinder body of the telescopic rod 30. When the elastic telescopic member 50 is compressed, it can provide a force for the telescopic rod 30 to move toward the No. 2 power head 20. When the elastic telescopic member 50 is in a natural state, it can provide a suspension force for the telescopic rod 30, so that the second end 32 of the telescopic rod 30 remains tilted upward.

[0034] When the gravity of the No. 2 power head 20 is not enough to drive the drill rod downward, the No. 1 power head 10 is controlled to rise by the winch of the No. 1 power head 10, so that the lower end of the No. 1 power head 10 is higher than the upper end of the No. 2 power head 20, and the second end 32 of the telescopic rod 30 is controlled to be away from the first end 31, so that the hook 40 extends to the top of the cross bar 22; then the No. 1 power head 10 is controlled to descend by the winch until the hook 40 is hung on the cross bar 22, and the gravity of the No. 1 power head 10 acts on the No. 2 power head 20, and the winch is turned off; then, the distance between the second end 32 and the first end 31 of the telescopic rod 30 can be controlled to adjust the angle between the telescopic rod 30 and the No. 1 power head 10 and the No. 2 power head 20, so as to achieve precise control of the downward force applied by the No. 1 power head 10 to the No. 2 power head 20, that is, the drilling compensation force. The angle between the telescopic rod 30 and the No. 1 power head 10 and the No. 2 power head 20 is adjusted from large to small. When the drilling compensation force cooperates with the gravity of the No. 2 power head 20 to drive the drill rod downward, the second end 32 of the telescopic rod 30 is controlled to stop moving away from the first end 31, and the distance between the second end 32 and the first end 31 of the telescopic rod 30 is maintained at this time, so as to avoid excessive wear of the drill bit caused by excessive downward drilling force, thereby increasing the service life of the drill bit. When long-distance compensation for downward drilling force is required, the distance between the first end 31 and the second end 32 of the telescopic rod 30 is maintained at this time, and the No. 1 power head 10 and the No. 2 power head 20 are controlled to descend synchronously by the winch.

[0035] A storage hook 60 is provided on the side wall of the No. 1 power head 10 facing the No. 2 power head 20. The storage hook 60 is movably connected to the No. 1 power head 10. Specifically, the storage hook 60 can be movably hung on the No. 1 power head 10 through a chain or a hanging ring, or can be rotatably connected to the No. 1 power head 10 around a horizontal axis, or can be rotatably connected to the No. 1 power head 10 around a vertical axis. In this embodiment, the storage hook 60 is introduced by taking the example of being rotatably connected to the No. 1 power head 10 around a horizontal axis. Initially, the plane where the hook body of the storage hook 60 is located is vertically arranged (such as Figure 1 As shown in the figure, when the No. 1 power head 10 does not need to apply drilling compensation force to the No. 2 power head 20, the telescopic rod 30 is driven to rotate around the first end 31 in the direction close to the No. 1 power head 10, and the hook body of the storage hook 60 is rotated to a horizontal state, and the storage hook 60 can be hooked on the telescopic rod 30, so that the telescopic rod 30 is stored in a vertical state on one side of the No. 1 power head 10, thereby making it difficult for the telescopic rod 30 to collide and interfere with other components when the No. 1 power head 10 is raised or lowered.

[0036] Example 2

[0037] The difference from Example 1 is that, referring to Figure 3 and Figure 4The first end 31 of the telescopic rod 30 is higher than the second end 32 , and the second end 32 is rotatably pressed against the second power head 20 and is used to provide downward pressure to the second power head 20 .

[0038] The second power head 20 is provided with a pressing plate 23, and the pressing plate 23 is provided with a pressing groove 231 with an opening toward the first end 31, and the second end 32 can be pressed in the pressing groove 231, and is used to provide downward pressure on the second power head 20. Specifically, the pressing plate 23 includes a first limiting plate 232 and a second limiting plate 233, the first limiting plate 232 is located at the lower side, and the second limiting plate 233 is located at the upper side, and the first limiting plate 232 and the second limiting plate 233 form a pressing groove 231 with an opening toward the first end 31. The second end 32 can be pressed between the first limiting plate 232 and the second limiting plate 233 and can rotate between the first limiting plate 232 and the second limiting plate 233, and the first limiting plate 232 and the second limiting plate 233 limit the second end 32, so that the second end 32 is not easy to slide relative to the second power head 20 in the vertical direction and the horizontal direction. When the pressure plate 23 is fixed to the upper end surface of the No. 2 power head 20, the first limit plate 232 is fixed to the upper end surface of the No. 2 power head 20; when the pressure plate 23 is fixed to the side wall of the No. 2 power head 20 facing the No. 1 power head 10, the second limit plate 233 is fixed to the side wall of the No. 2 power head 20 facing the No. 1 power head 10.

[0039] The difference from the first embodiment is that the elastic telescopic member 50 always provides the telescopic rod 30 with a force toward the second power head 20, so that the second end 32 of the telescopic rod 30 remains tilted downward.

[0040] When the gravity of the No. 2 power head 20 is not enough to drive the drill rod downward, the No. 1 power head 10 is controlled to rise by the winch of the No. 1 power head 10, so that the lower end of the No. 1 power head 10 is higher than the upper end of the No. 2 power head 20, and the second end 32 of the telescopic rod 30 is controlled to move away from the first end 31, so that the second end 32 extends to just above the pressure groove 231; then the No. 1 power head 10 is controlled to descend by the winch until the second end 32 abuts against the pressure groove 231, the gravity of the No. 1 power head 10 acts on the No. 2 power head 20, and the winch is turned off; then the angle between the telescopic rod 30 and the No. 1 power head 10 and the No. 2 power head 20 can be adjusted by adjusting the distance between the second end 32 and the first end 31 of the telescopic rod 30, so as to accurately control the downward force applied by the No. 1 power head 10 to the No. 2 power head 20, that is, the drilling compensation force. The angle between the telescopic rod 30 and the No. 1 power head 10 and the No. 2 power head 20 is adjusted from large to small. When the drilling compensation force cooperates with the gravity of the No. 2 power head 20 to drive the drill rod downward, the second end 32 of the telescopic rod 30 is controlled to stop moving away from the first end 31, and the distance between the second end 32 and the first end 31 of the telescopic rod 30 is maintained at this time, so as to avoid excessive wear of the drill bit caused by excessive downward drilling force, thereby increasing the service life of the drill bit. When long-distance compensation for downward drilling force is required, the distance between the first end 31 and the second end 32 of the telescopic rod 30 is maintained at this time, and the No. 1 power head 10 and the No. 2 power head 20 are controlled to descend synchronously by the winch.

[0041] Although the disclosure is disclosed as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A dual power head pressurizing device, characterized in that: The invention comprises a first power head (10), a second power head (20) and a telescopic rod (30), wherein the first power head (10) and the second power head (20) are respectively two power heads of a dual-power pile driver, the two ends of the telescopic rod (30) are respectively a first end (31) and a second end (32), the telescopic rod (30) has a driving source, the driving source can drive the telescopic rod (30) to extend and retract and lock the length of the telescopic rod (30), the telescopic rod (30) is tiltedly arranged so that the first end (31) and the second end (32) are not at the same horizontal height, the first end (31) is rotatably connected to the first power head (10), and the second end (32) is detachably rotatably connected to the second power head (20) and is used to provide downward pressure to the second power head (20).

2. The dual-power head pressurizing device according to claim 1 is characterized in that: The height of the first end (31) is smaller than the height of the second end (32), and the second end (32) is provided with a hook (40) with an opening facing downward, and the hook (40) is detachably hung on the second power head (20).

3. The dual power head pressurizing device according to claim 2 is characterized in that: A support block (21) is provided on the side wall of the No. 2 power head (20) facing the No. 1 power head (10), and a cross bar (22) extending in the horizontal direction is provided on the support block (21), and the hook (40) is hung on the cross bar (22).

4. The dual power head pressurizing device according to claim 1, characterized in that: An elastic telescopic member (50) is connected between the No. 1 power head (10) and the telescopic rod (30).

5. The dual-power head pressurizing device according to claim 4 is characterized in that: A storage hook (60) for hanging the telescopic rod (30) is provided on the side wall of the No. 1 power head (10) facing the No. 2 power head (20), and the storage hook (60) is rotatably connected to the No. 1 power head (10).

6. The dual-power head pressurizing device according to claim 1, characterized in that: The height of the first end (31) is greater than the height of the second end (32), and the second end (32) is rotatably pressed against the second power head (20).

7. The dual-power head pressurizing device according to claim 6, characterized in that: The second power head (20) is provided with a pressing plate (23), the pressing plate (23) is provided with a pressing groove (231), and the second end (32) is rotatably pressed in the pressing groove (231).

8. The dual power head pressurizing device according to any one of claims 1 to 7, characterized in that: The telescopic rod (30) is an electric push rod or a hydraulic cylinder.

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