Rocket type pile hole guide rammer
By designing a rocket-type pile hole guide hammer, the problem of low efficiency of rotary drilling under complex geological conditions was solved, achieving efficient and safe one-time hole formation and material reuse.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR SECOND ENG BUREAU LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-05-26
AI Technical Summary
Existing rotary drilling methods are inefficient in soil layers such as gravel, clay, and soft soil, resulting in poor hole formation, safety hazards, wasted manpower, and increased construction costs.
Design a rocket-type pile hole guide hammer, including a rocket hammer head, a rocket hammer outer armor, and a hoisting hammer core. The rocket hammer head is surrounded by a flow guide band, and the outer armor has a positioning guide band. These structures enhance penetration and hole-forming efficiency.
It improves hole-forming efficiency, reduces kinetic energy loss, enhances safety and ease of operation, and achieves efficient and reliable one-time hole forming, and can be reused.
Smart Images

Figure CN224282497U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to a rocket-type pile hole guiding hammer. Background Technology
[0002] Due to the large area of the project site and the complex geological conditions, the commonly used rotary drilling method for drilling in layers of gravel, clay, and soft soil is slow and produces poor hole formation results. It requires manual assistance, which poses safety issues, wastes manpower, reduces work efficiency, and increases construction costs. Utility Model Content
[0003] The purpose of this invention is to provide a rocket-type pile hole guide hammer to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides a rocket-type pile hole guiding hammer, comprising:
[0005] The rocket hammer head is a semi-elliptical structure, including a horizontal upper end face and a bottom pointed end. Multiple guide bands are evenly distributed on the outer wall of the rocket hammer head along the major axis of the semi-elliptical body.
[0006] The rocket hammer outer armor is a hollow cylindrical structure. It is located on the top of the rocket hammer head. Multiple positioning guide strips are evenly distributed around the outer periphery of the rocket hammer outer armor along the central axis. The positions of the positioning guide strips and the guide strips correspond one-to-one.
[0007] The hoisting hammer core is vertically inserted into the outer armor of the rocket hammer from the bottom center and is fixedly connected to the outer armor. The upper end of the hoisting hammer core extends above the outer armor of the rocket hammer, and the lower end is fixedly connected to the rocket hammer head.
[0008] In a preferred embodiment, a circular hole is provided at the center of the upper end face of the rocket hammer outer armor. The diameter of the circular hole is smaller than the inner diameter of the hollow cylindrical structure of the rocket hammer outer armor. Vertical bolt holes are provided inward from the upper end face of the rocket hammer head.
[0009] In a preferred embodiment, eight guide strips are provided. Each guide strip has an arc-shaped triangular prism structure, with one edge facing outward. The guide strip extends from the horizontal upper end sidewall of the rocket hammer head to the bottom pointed end.
[0010] In a preferred embodiment, eight positioning guide strips are provided. Each positioning guide strip has a vertical triangular prism structure, with one edge facing outwards, and the cross-sections of the positioning guide strips are aligned and fitted together.
[0011] In a preferred embodiment, the hoisting hammer core includes a hoisting mushroom head at the top, a power-energizing section in the middle, and an end bolt at the bottom. The diameter of the hoisting mushroom head is smaller than the diameter of the circular hole in the outer armor of the rocket hammer. The hoisting mushroom head extends to the outer side of the top of the outer armor of the rocket hammer. The outer diameter of the power-energizing section is consistent with the inner diameter of the hollow cylindrical structure in the outer armor of the rocket hammer, and the length of the power-energizing section is equal to that of the outer armor of the rocket hammer. The end bolt is threadedly connected to the bolt hole at the center of the rocket hammer head.
[0012] In a preferred embodiment, the upper surface of the outer armor of the rocket hammer is fixedly connected to the power-energizing section of the hoisting hammer core by four symmetrically arranged connecting bolts.
[0013] In a preferred embodiment, the depth of the bolt hole is 1 / 2 of the semi-major axis of the semi-ellipsoid.
[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: This device, by setting up a rocket hammer head, a guide belt, an outer armor of the rocket hammer, a positioning guide belt, and a hoisting hammer core, and with a guide belt around the rocket hammer head, reduces the interference of gravel and soil layers on the rocket hammer head, enhances the fluid flow performance of soft soil and clay layers, and improves penetration ability; the positioning guide belt on the outer side of the outer armor of the rocket hammer enhances the hole-forming effect while reducing kinetic energy loss and improving work efficiency. This device has strong penetration, forms holes in one pass, has high work efficiency, is easy to fix and operate, is highly practical, can be reused, and has high safety and reliability. Attached Figure Description
[0015] Figure 1 This is an assembly diagram of the rocket-type pile hole guide hammer of this utility model;
[0016] Figure 2 This is a front view structural diagram of the rocket hammer head of this utility model;
[0017] Figure 3 This is a top view schematic diagram of the rocket hammer head structure of this utility model;
[0018] Figure 4 This is a bottom view schematic diagram of the rocket hammer head structure of this utility model;
[0019] Figure 5 This is a schematic diagram of the hoisting hammer core structure of this utility model;
[0020] Figure 6 This is a front view structural diagram of the outer armor of the rocket hammer of this utility model.
[0021] Figure 7 This is a top view schematic diagram of the outer armor of the rocket hammer of this utility model;
[0022] Figure 8 This is a bottom-view structural diagram of the outer armor of the rocket hammer of this utility model;
[0023] Explanation of reference numerals in the attached figures:
[0024] 1-Rocket hammer head, 101-Guide strip, 102-Bolt hole, 2-Rocket hammer outer armor, 201-Positioning guide strip, 202-Circular hole, 3-Lifting hammer core, 301-Lifting mushroom head, 302-Power energizing section, 303-End bolt, 4-Connecting bolt. Detailed Implementation
[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0026] Example 1
[0027] like Figures 1 to 8 As shown, the rocket-type pile hole guiding hammer of this utility model includes: a rocket hammer head 1, a rocket hammer outer armor 2, and a hoisting hammer core 3. The rocket hammer head 1 has a semi-elliptical structure and is made of manganese steel. The rocket hammer head 1 includes a horizontal upper end face and a bottom pointed end. Multiple guide bands 101 are evenly distributed around the outer wall of the rocket hammer head 1 along the long axis of the semi-ellipse. The rocket hammer outer armor 2 has a hollow cylindrical structure and is located on top of the rocket hammer head 1. Multiple positioning guide bands 201 are evenly distributed around the outer periphery of the rocket hammer outer armor 2 along the central axis, and the positions of the positioning guide bands 201 correspond one-to-one with the guide bands 101. The hoisting hammer core 3 is vertically inserted into the rocket hammer outer armor 2 from the bottom center and is fixedly connected to the rocket hammer outer armor 2. The upper end of the hoisting hammer core 3 extends above the rocket hammer outer armor 2, and the lower end is fixedly connected to the rocket hammer head 1.
[0028] Furthermore, a circular hole 202 is provided at the center of the upper end face of the rocket hammer outer armor 2. The diameter of the circular hole is smaller than the inner diameter of the hollow cylindrical structure of the rocket hammer outer armor 2. A vertical bolt hole 102 is provided inward from the upper end face of the rocket hammer head 1.
[0029] Furthermore, the lifting hammer core 3 includes a lifting mushroom head 301 at the top, a power-energizing section 302 in the middle, and an end bolt 303 at the bottom. The diameter of the lifting mushroom head 301 is smaller than the diameter of the circular hole in the outer armor of the rocket hammer 2. The lifting mushroom head 301 extends to the outer side of the top of the outer armor of the rocket hammer 2 for construction lifting. The outer diameter of the power-energizing section 302 is consistent with the inner diameter of the hollow cylindrical structure of the outer armor of the rocket hammer 2, and the length of the power-energizing section 302 is equal to that of the outer armor of the rocket hammer 2. The end bolt 303 is threadedly connected to the bolt hole in the center of the rocket hammer head 1, making installation convenient and quick, and improving turnover efficiency. The upper end face of the outer armor of the rocket hammer 2 is fixedly connected to the power-energizing section 302 of the lifting hammer core 3 by four symmetrically arranged connecting bolts 4. The connecting bolts 4 fix the outer armor of the rocket hammer 2 to the lifting hammer core 3, thereby tightly combining the outer armor of the rocket hammer 2 and the lifting hammer core 3, providing an overall sturdy structure.
[0030] Furthermore, eight guide strips 101 are provided. Each guide strip 101 has an arc-shaped triangular prism structure, with one edge facing outwards. This increases shear stress and the penetration of the rocket hammer, thereby increasing the hole depth and improving the compaction of the filling material, while reducing the probability of hammer suction and misalignment. The guide strip 101 extends from the horizontal upper end face sidewall of the rocket hammer head 1 to the bottom pointed end. Eight positioning guide strips 201 are provided. Each positioning guide strip 201 has a vertical triangular prism structure, with one edge facing outwards. The cross-sections of the positioning guide strips 201 are aligned and fitted to increase compressive stress and improve overall fluid performance, thereby increasing the hole depth and improving the compaction of the filling material.
[0031] Furthermore, the depth of the bolt hole 102 is 1 / 2 of the semi-major axis of the semi-ellipsoid.
[0032] Example 2
[0033] The following describes a specific implementation method and installation steps of this utility model:
[0034] In this embodiment, the rocket hammer head 1 is made of manganese steel and is cut from a semi-ellipse with a major axis of 1200mm and a minor axis of 650mm. Bolt holes 102 with a diameter of 200mm and a depth of 300mm are punched according to the design position. The rocket hammer head 1 is a semi-ellipse with a major axis of 1200mm and a minor axis of 600mm. The guide strips 101 are made of manganese steel and are symmetrically arranged in eight sections. These eight guide strips 101 are evenly distributed around the outer wall of the rocket hammer head 1 along its circumference, extending from the horizontal upper end sidewall to the bottom pointed end. The cross-section of the guide strip 101 is a triangular prism, with one edge facing outwards. The width of the guide strip 101 is 100mm to increase shear stress and improve the penetration of the rocket hammer, thereby increasing the hole depth and improving the compaction of the filling material, reducing the probability of hammer suction and misalignment.
[0035] The lifting hammer core 3 is made of cast iron and is machined from a 300mm diameter, 6400mm long cylinder. The upper part is the lifting mushroom head 301 for construction lifting. The top cap of the lifting mushroom head 301 has a diameter of 300mm and a thickness of 200mm, while the handle has a diameter of 150mm and a length of 600mm. The middle part is a 400mm diameter, 5000mm long power-energizing section 302 to increase overall weight and improve kinetic energy. Four 50mm diameter bolt holes are symmetrically punched according to the design position for assembly with the rocket hammer outer armor 2. The lower part has end bolts 303 with a diameter of 300mm and a length of 300mm for assembly with the rocket hammer head 1, facilitating quick and easy installation and improving turnover efficiency.
[0036] The rocket hammer outer armor 2 is made of manganese steel. It is made of a cylinder with a diameter of 650mm and a length of 5000mm, with a thickness of 100mm. Four bolt holes with a diameter of 50mm are punched according to the design position.
[0037] The positioning guide 201 is made of manganese steel and is installed in the same number as the flow guide 101. The positioning guide 201 is evenly installed on the outer wall of the rocket hammer outer armor 2 along the circumference of the rocket hammer outer armor 2 and is aligned and fitted with the cross section of the flow guide 101 to improve the extrusion stress and increase the overall fluid performance, thereby increasing the hole depth and improving the crushing and compaction of the filling material.
[0038] The connecting bolt 4 is an internal hexagonal head bolt made of Q235 steel. The head is made of a cylinder with a diameter of 100mm and a thickness of 100mm. The screw has a diameter of 50mm, a length of 800mm, and a thread length of 400mm. The connecting bolt 4 fixes the outer armor 2 of the rocket hammer to the hoisting hammer core 3, tightly combining the outer armor 2 of the rocket hammer with the hoisting hammer core 3, thus providing overall stability.
[0039] The specific installation and construction steps of the rocket-type pile hole guiding hammer of this utility model are as follows:
[0040] Step 1: Assemble the pre-processed rocket hammer head 1, rocket hammer outer armor 2, hoisting hammer core 3, and connecting bolts 4;
[0041] Step 2: Hang the hoisting mushroom head 301 on the hook of the dynamic compaction machine;
[0042] Step 3: After hoisting and aligning the points, release the weight to form a hole.
[0043] Step four: Simply move the dynamic compaction machinery to the remaining locations and assemble the device and perform on-site construction operations as described above. This achieves the effect of reuse.
[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A rocket pile hole guide rammer, characterized by: include: The rocket hammer (1) is a semi-elliptical structure, and the rocket hammer (1) includes a horizontal upper end face and a bottom pointed end. Multiple guide bands (101) are evenly distributed on the outer wall of the rocket hammer (1) along the long axis of the semi-elliptical body. The outer armor (2) of the rocket hammer is a hollow cylindrical structure. The outer armor (2) of the rocket hammer is set on the top of the rocket hammer head (1). Multiple positioning guide strips (201) are evenly distributed on the outer periphery of the outer armor (2) along the central axis. The positions of the positioning guide strips (201) and the guide strips (101) correspond one-to-one. The hoisting hammer core (3) is vertically inserted into the outer armor of the rocket hammer (2) from the bottom center and fixedly connected to the outer armor of the rocket hammer (2). The upper end of the hoisting hammer core (3) extends above the outer armor of the rocket hammer (2) and the lower end is fixedly connected to the rocket hammer head (1). The positioning guide strip (201) is provided in eight parts. The positioning guide strip (201) is a vertical triangular prism structure, with one edge facing outward. The cross sections of the positioning guide strip (201) are aligned and fitted. The flow guide strip (101) is provided in eight parts. The flow guide strip (101) is an arc-shaped triangular prism structure, with one edge facing outward. The flow guide strip (101) extends from the horizontal upper end sidewall of the rocket hammer head (1) to the bottom pointed end. The hoisting hammer core (3) includes a hoisting mushroom head (301) located at the top, and a middle The power-energizing section (302) of the part and the end bolt (303) at the bottom, the diameter of the lifting mushroom head (301) is smaller than the diameter of the circular hole of the rocket hammer outer armor (2), the lifting mushroom head (301) extends to the outside of the top of the rocket hammer outer armor (2), the outer diameter of the power-energizing section (302) is consistent with the inner diameter of the hollow cylindrical structure of the rocket hammer outer armor (2), and the length of the power-energizing section (302) is equal to that of the rocket hammer outer armor (2), and the end bolt (303) is threadedly connected to the bolt hole at the center of the rocket hammer head (1).
2. A rocket pile hole guide rammer according to claim 1, characterised in that: A circular hole is provided at the center of the upper end face of the outer armor (2) of the rocket hammer. The diameter of the circular hole is smaller than the inner diameter of the hollow cylindrical structure of the outer armor (2) of the rocket hammer. A vertical bolt hole (102) is provided inward from the upper end face of the rocket hammer head (1).
3. A rocket pile hole guide rammer according to claim 1, characterised in that: The upper end face of the outer armor (2) of the rocket hammer is fixedly connected to the power-energizing section (302) of the hoisting hammer core (3) by four symmetrically arranged connecting bolts (4).
4. A rocket pile hole guide ramming hammer according to claim 2, characterised in that: The depth of the bolt hole (102) is 1 / 2 of the semi-major axis of the semi-ellipsoid.