A pile hammer

Abstract

The present application relates to a pile hammer, which includes: a hammer body, a punching assembly and a rotating assembly, wherein a connecting ear is arranged at one end of the hammer body; the bottom end of the punching assembly is a pile driving working end, and a spiral groove is arranged on the surface of the pile driving working end; one end of the rotating assembly is rotatably connected to the hammer body, and the other end is fixedly connected to the punching assembly. In the present invention, since a rotating assembly is arranged between the punching assembly and the hammer body, the rotating assembly can drive the punching assembly to rotate, and when the punching assembly strikes downward, the surface of the pile driving working end with the spiral groove is rotated to punch holes, which can increase the punching area and thus improve the punching efficiency of the pile hole.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and in particular to a pile driving hammer. Background Art

[0002] The hydraulic pile hammer is an impact pile hammer, which mainly strikes the pile body by free fall. After being raised to the expected height by the hydraulic system, it obtains acceleration energy from the hydraulic system to increase the impact speed to strike the pile body.

[0003] The traditional hydraulic pile hammer consists of a hammer body and a hammer core arranged inside the hammer body. The top of the hammer body is connected to the hydraulic system, and the other end is the working end that strikes the pile body. The pile hammer punches pile holes by striking the ground downward. The recoil force generated during drilling all acts on the pile hammer. Over time, it may cause damage to the components due to vibration and make them unable to be used normally, which reduces the stability of the pile hammer and reduces the drilling efficiency. Summary of the invention

[0004] The embodiment of the present application provides a pile hammer to solve the problem of low drilling efficiency in the related art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pile hammer, comprising: a hammer body, a stamping assembly and a rotating assembly, wherein a connecting ear is arranged at one end of the hammer body; the bottom end of the stamping assembly is a piling working end, and a spiral groove is arranged on the surface of the piling working end; one end of the rotating assembly is rotatably connected to the hammer body, and the other end is fixedly connected to the stamping assembly.

[0006] In some embodiments, the rotating assembly includes: a connecting column, a bearing, a rotating disk, an extrusion plate and a buffer spring, the connecting column is fixed to the other end of the hammer body; the bearing is sleeved and fixed to the outer peripheral surface of the connecting column; the rotating disk is fixed to the outer peripheral surface of the bearing; the extrusion plate is located below the rotating disk and is fixedly connected to the stamping assembly; the upper and lower ends of the buffer spring are respectively connected to the rotating disk and the extrusion plate.

[0007] In some embodiments, a mounting groove or a through hole is provided on the lower surface of the rotating disk; a guide rod is provided on the upper surface of the extrusion plate, and a portion of the guide rod extends into the mounting groove or the through hole.

[0008] In some embodiments, a sleeve is provided on the lower surface of the rotating disk; a guide rod is provided on the upper surface of the extrusion plate, and a portion of the guide rod extends into the sleeve.

[0009] In some embodiments, a through hole is provided on the rotating disk, and a sleeve is installed in the through hole; a guide rod is provided on the upper surface of the extrusion plate, and the guide rod partially extends into the sleeve.

[0010] In some embodiments, the buffer spring is sleeved outside the guide rod.

[0011] In some embodiments, an anti-slip ring is fixedly connected between the bearing and the rotating disk.

[0012] In some embodiments, the stamping assembly includes: a connecting tube and a flange, which is fixedly connected to the rotating assembly; one end of the flange is fixedly connected to the connecting tube, and the other end is fixedly connected to a stamping drill bit by a fastening bolt; the stamping drill bit is the piling working end.

[0013] In some embodiments, a first reinforcing plate is evenly and fixedly connected between the rotating assembly and the flange, and / or a second reinforcing plate is evenly and fixedly connected between the flange and the punch drill bit.

[0014] In some embodiments, the hammer body is also provided with a plurality of openings for operators to climb.

[0015] The beneficial effects of the technical solution provided by this application include:

[0016] The embodiment of the present application provides a pile driving hammer. Since a rotating assembly is arranged between the punching assembly and the hammer body, the rotating assembly can drive the punching assembly to rotate. When the punching assembly strikes downward, the surface of the pile driving working end provided with a spiral groove rotates and punches holes, which can increase the punching area and thereby improve the punching efficiency of the pile hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the overall front structure provided for an embodiment of the present application;

[0019] Figure 2 for Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0020] Figure 3 This is a schematic diagram of the top view structure of the rotating disk, connecting column, bearing and anti-slip ring provided in an embodiment of the present application.

[0021] In the figure: 1, hammer body; 10, connecting ear;

[0022] 2. Rotating assembly; 20. Connecting column; 21. Bearing; 22. Rotating plate; 23. Anti-slip ring; 24. Through hole; 25. Sleeve; 26. Guide rod; 27. Buffer spring; 28. Extrusion plate;

[0023] 3. Stamping assembly; 30. Connecting tube; 31. First reinforcing plate; 32. Flange; 33. Fastening bolts; 34. Second reinforcing plate; 35. Stamping drill bit. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] See also Figures 1 to 3 The embodiment of the present application provides a pile hammer, which includes: a hammer body 1, a stamping assembly 3 and a rotating assembly 2, wherein a connecting ear 10 is provided at one end of the hammer body 1; the bottom end of the stamping assembly 3 is a piling working end, and a spiral groove is provided on the surface of the piling working end; one end of the rotating assembly 2 is rotatably connected to the hammer body 1, and the other end is fixedly connected to the stamping assembly 3.

[0026] Since a rotating assembly 2 is arranged between the punching assembly 3 and the hammer body 1, the rotating assembly 2 can drive the punching assembly 3 to rotate. When the punching assembly 3 strikes downward, the surface of the piling working end provided with a spiral groove rotates and punches holes, which can increase the punching area and thus improve the punching efficiency of the pile hole.

[0027] The hammer body 1 is also provided with a number of openings for operators to climb, and the device can be connected to other devices through the connecting ears 10. When the device is in use, it impacts downward as a whole, and the bottom end of the punching assembly 3 is the piling working end. When piling, the punching assembly 3 rotates to punch holes, and the rotating assembly 2 rotates synchronously with the punching assembly 3. The spiral groove provided can increase the punching area when rotating and punching.

[0028] In some embodiments, the rotating assembly 2 includes: a connecting column 20, a bearing 21, a rotating disk 22, an extrusion plate 28 and a buffer spring 27, the connecting column 20 is fixed to the other end of the hammer body 1; the bearing 21 is sleeved and fixed to the outer peripheral surface of the connecting column 20; the rotating disk 22 is fixed to the outer peripheral surface of the bearing 21; the extrusion plate 28 is located below the rotating disk 22 and is fixedly connected to the stamping assembly 3; the upper and lower ends of the buffer spring 27 are respectively connected to the rotating disk 22 and the extrusion plate 28.

[0029] When the pile hammer impacts downward, the outer ring of the bearing 21 can drive the rotating disk 22 to rotate. When the extrusion plate 28 is squeezed by external force, the buffer spring 27 undergoes elastic deformation, which can buffer and release the impact force of the pile hammer in the vertical direction, avoiding excessive vibration force that affects the normal use of the pile hammer, thereby ensuring the stability of the pile hammer.

[0030] When the pile hammer impacts downward, the extrusion plate 28 will be squeezed by the external force. Since only the buffer spring 27 is provided, the extrusion plate 28 may be misaligned with the rotating disk 22 during the extrusion process, which affects the buffering and release of the impact force of the pile hammer in the vertical direction by the rotating component 2. Therefore, when the rotating component 2 is set, a guide rod 26 can be added to guide the extrusion plate 28 to avoid the extrusion plate 28 being misaligned with the rotating disk 22 during the extrusion process, thereby ensuring the stability of the buffering and release.

[0031] In some embodiments, the guide rod 26 may be arranged in the following ways:

[0032] The lower surface of the rotating disk 22 is provided with a mounting groove or a through hole 24; the upper surface of the extrusion plate 28 is provided with a guide rod 26, and the guide rod 26 partially extends into the mounting groove or the through hole 24. When the rotating disk 22 has a sufficient thickness, it is suitable to set the mounting groove, and the depth of the mounting groove is less than the thickness of the rotating disk 22, so that the guide rod 26 slides in the mounting groove; when the extrusion plate 28 is squeezed by an external force, the guide rod 26 slides in the mounting groove or the through hole 24, so that the rotating assembly 2 is more stable when buffering the release force.

[0033] A sleeve 25 is provided on the lower surface of the rotating disk 22; a guide rod 26 is provided on the upper surface of the extrusion plate 28, and a portion of the guide rod 26 extends into the sleeve 25. When the sleeve 25 is provided, the distance between the rotating disk 22 and the extrusion plate 28 should be far enough, and in this case, the rotating disk 22 does not need to be provided too thick, which can save the cost of providing the rotating disk 22. The sleeve 25 is used in conjunction with the guide rod 26, so that the guide rod 26 is more stable when sliding. In this case, the sleeve 25 and the guide rod 26 are both provided between the rotating disk 22 and the extrusion plate 28.

[0034] The rotating disk 22 is provided with a through hole 24, in which a sleeve 25 is installed; a guide rod 26 is provided on the upper surface of the extrusion plate 28, and a portion of the guide rod 26 extends into the sleeve 25. Directly providing the through hole 24 so that the sleeve 25 extends into the through hole 24 on the rotating disk 22 can shorten the distance between the rotating disk 22 and the extrusion plate 28 compared to providing the sleeve 25 on the lower surface of the rotating disk 22, and can also make the rotating assembly 2 more stable when buffering the release force.

[0035] In any of the above methods, the buffer spring 27 can also be sleeved outside the guide rod 26 .

[0036] In some embodiments, an anti-slip ring 23 is fixedly connected between the bearing 21 and the rotating disk 22 .

[0037] The bearing 21 is a sealed bearing 21 , and the anti-slip ring 23 made of rubber can prevent slipping between the outer ring of the bearing 21 and the rotating disk 22 , thereby improving the installation stability of the bearing 21 .

[0038] In some embodiments, the stamping assembly 3 includes: a connecting tube 30 and a flange 32, the connecting tube 30 is fixedly connected to the rotating assembly 2; one end of the flange 32 is fixedly connected to the connecting tube 30, and the other end is fixedly connected to a stamping drill bit 35 by a fastening bolt 33; the stamping drill bit 35 is the piling working end.

[0039] The connecting tube 30 is conical, and the flange 32 is connected to the punch drill bit 35 by fastening bolts 33, so that the punch drill bit 35 and the flange 32 have the function of being disassembled and assembled, which is convenient for the later maintenance and replacement of the punch drill bit 35.

[0040] A first reinforcing plate 31 is evenly and fixedly connected between the rotating assembly 2 and the flange 32 , and a second reinforcing plate 34 is evenly and fixedly connected between the flange 32 and the punch drill bit 35 . The first reinforcing plate 31 and the second reinforcing plate 34 can increase the strength of the connecting tube 30 and the punch drill bit 35 .

[0041] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0042] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0043] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A pile hammer, It is characterized in that It includes: A hammer body (1), wherein one end of the hammer body (1) is provided with a connecting ear (10); A punching assembly (3), wherein the bottom end of the punching assembly (3) is a piling working end, and a spiral groove is provided on the surface of the piling working end; A rotating assembly (2), wherein one end of the rotating assembly (2) is rotatably connected to the hammer body (1), and the other end of the rotating assembly (2) is fixedly connected to the punching assembly (3); The rotating assembly (2) comprises: A connecting column (20), wherein the connecting column (20) is fixed to the other end of the hammer body (1); A bearing (21), wherein the bearing (21) is sleeved and fixed on the outer peripheral surface of the connecting column (20); A rotating disk (22), wherein the rotating disk (22) is fixed to the outer peripheral surface of the bearing (21); An extrusion plate (28) located below the rotating disk (22) and fixedly connected to the stamping assembly (3); A buffer spring (27), wherein the upper and lower ends of the buffer spring (27) are respectively connected to the rotating disk (22) and the extrusion plate (28); The lower surface of the rotating disk (22) is provided with a mounting groove or a through hole (24); A guide rod (26) is provided on the upper surface of the extrusion plate (28), and a portion of the guide rod (26) extends into the mounting groove or through hole (24); The buffer spring (27) is sleeved on the outside of the guide rod (26); when the pile hammer impacts downward, the outer ring of the bearing (21) can drive the rotating disk (22) to rotate; The hammer body (1) is also provided with a plurality of openings for operators to climb.

2. A pile hammer as claimed in claim 1, Features: An anti-slip ring (23) is fixedly connected between the bearing (21) and the rotating disk (22).

3. The pile hammer according to claim 1, Features: The stamping assembly (3) comprises: A connecting cylinder (30), wherein the connecting cylinder (30) is fixedly connected to the rotating assembly (2); A flange (32), one end of the flange (32) being fixedly connected to the connecting tube (30), and the other end of the flange (32) being fixedly connected to a punching drill bit (35) via a fastening bolt (33); The punching drill bit (35) is the piling working end.

4. A pile hammer as claimed in claim 3, Features: A first reinforcing plate (31) is evenly and fixedly connected between the rotating assembly (2) and the flange (32), and / or a second reinforcing plate (34) is evenly and fixedly connected between the flange (32) and the punching drill bit (35).

Images