Hole bottom punch hammer device

Abstract

The utility model relates to the technical field of hole bottom punch hammers, and discloses a hole bottom punch hammer device which comprises a hammer body structure, a hammer core column structure and a hammer face structure, the hammer core column structure is located inside the hammer body structure, the hammer face structure is located at the bottom of the hammer body structure, the hammer body structure comprises a hammer foot, the top of the hammer foot is fixedly connected with a connecting rope, and the connecting rope is fixedly connected with the connecting rope. And a foundation pile hole is formed in the outer surface of the hammer foot. The first hammer teeth are located on the same circular ring, so that the hammer head is in a central symmetry shape, the gravity center coincides with the center, the hammer is not deviated in the hammering process, the hammering force is uniform, the hammering effect is stable, and the distance between every two adjacent first hammer teeth in the radial direction is smaller than two times of the hammering influence diameter of each first hammer tooth; on the premise of covering the well bottom plane and ensuring the hammering effect, the number of the arranged hammer teeth is reduced, the crushing efficiency of a single hammer tooth is fully exerted, and the production cost of the hammer head is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bottom hole hammers, in particular to a bottom hole hammer device. Background Art

[0002] The impact drilling method is that when the hammer is drilling, the wire rope is used to periodically raise the hammer head to a certain height from the bottom of the hole. The hammer is accelerated to fall under the action of gravity, impacting the bottom of the hole and breaking the rock. After each impact, the hammer head is driven by the wire rope and rotates a certain angle to form a circular cross-section hole. Part of the broken rock cuttings are pressed into the hole wall, and the other part is suspended by the mud and brought out into the sedimentation tank or intermittently pumped out with a sand pump. The mud is used as a drilling stabilizing fluid to balance the water pressure, prevent the hole from collapsing, and suspend the drilling cuttings.

[0003] For example, Chinese patent document CN104047542B discloses a rock-embedded inclined pile impact drill pipe hammer system and a rock-embedded inclined pile impact construction method. Figure 4 The invention discloses a three-dimensional schematic diagram of the hammer head of the rock-embedded inclined pile impact drilling pipe hammer system. The hammer head comprises an annular hammer head seat, in which a plurality of connecting beams are arranged. The plurality of connecting beams are staggeredly connected to the inner wall of the annular hammer head seat, and a plurality of protruding hammer teeth are evenly distributed on the surfaces of the annular hammer head seat and the plurality of connecting beams. However, since the hammer teeth of the hammer head of the prior art are evenly distributed along the connecting beam, and the three groups of hammer teeth from the inside to the outside are respectively located on three concentric circles with the center of the hammer head as the center, in the actual drilling process, the hammer head repeatedly hammers the bottom of the well as the steel cable moves up and down, and the hammer teeth directly act on the bottom surface of the well. Since the hammer head will produce a certain rotation as the tension of the steel cable changes, the landing point of the hammer teeth in the circumferential direction is uncertain each time the hammer is struck. However, due to the limitation of the foundation pile hole on the hammer head, the hammer teeth are basically determined in the radial direction each time the hammer is struck, so that the groove between two adjacent groups of hammer teeth cannot directly act on the bottom surface of the well, resulting in the formation of multiple concentric convex ridges at the positions of the bottom surface of the well corresponding to the multiple grooves. During the repeated hammering of the hammer head, the convex ridges form a fulcrum, which hinders the hammer teeth from hammering and affects the hammering efficiency. Such problems can be eliminated by increasing the number of hammer teeth in the radial direction, that is, reducing the distance between radially adjacent hammer teeth in the same group. However, this will require the use of more hammer teeth made of expensive materials; and in this way, the two radially adjacent hammer teeth will interfere with each other during the crushing impact process, reducing the crushing efficiency of a single hammer tooth. For this reason, we propose a bottom-hole impact hammer device. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a bottom hole hammer device.

[0005] The utility model is implemented by the following technical scheme: a bottom hole hammer device, comprising a hammer body structure, a hammer core column structure and a hammer face structure, wherein the hammer core column structure is located inside the hammer body structure, and the hammer face structure is located at the bottom of the hammer body structure;

[0006] The hammer body structure comprises a hammer foot, a connecting rope is fixedly connected to the top of the hammer foot, a foundation pile hole is arranged on the outer surface of the hammer foot, and the material of the hammer foot is set to be steel.

[0007] Through the above technical solution, the rising of the hammer is operated by the connecting rope.

[0008] As a further improvement of the above solution, the hammer core column structure includes a hammer core column, the interior of the hammer core column is fixedly connected to an arm frame, and both ends of the arm frame are fixedly connected to arc-shaped steel plates.

[0009] Through the above technical scheme, the arc-shaped steel plate at the outer end of the arm is supported on the hole wall, and the reaction force of the hole wall acts on the hard rock at the bottom of the opposite hammer foot through the arm. Under the joint action of the impact force of the hammer head, the hard rock is subjected to concentrated force and is destroyed first until the reaction forces of the soft and hard rocks at the bottom of the hammer are balanced. The drilling is carried out synchronously and evenly, so that the inclination of the hole is within the limit range. Therefore, the development of the inclined hole can be effectively limited, the quality of the impact hole is improved, and the bearing capacity of the foundation pile is guaranteed.

[0010] As a further improvement of the above solution, the material of the hammer core column is set to be steel, the number of the arc-shaped steel plates is set to two, the width of the arc-shaped steel plate is smaller than the width of the hammer foot, and the height thereof is greater than the width.

[0011] Through the above technical solution, the arc-shaped steel plate increases the hammer weight and the corresponding impact potential energy, accelerates the hole-making speed, improves the hole-making efficiency, and avoids the mechanical loss, material waste, time delay and manual processing costs caused by processing inclined holes.

[0012] As a further improvement of the above scheme, the hammer face structure includes a hammer face, the surface of the hammer face is fixedly connected to the hammer frame, a hammer beam is fixedly connected inside the hammer frame, a first hammer tooth is arranged on the surface of the hammer beam, a second hammer tooth is arranged on the surface of the hammer frame, a third hammer tooth is arranged on the outer wall of the hammer frame, and the surfaces of the first hammer tooth, the second hammer tooth and the third hammer tooth are arranged on the mounting hole.

[0013] Through the above technical solution, the third hammer tooth enables the hammer head to scrape the foundation pile hole.

[0014] As a further improvement of the above scheme, the hammer frame is arranged in a circular ring shape, and there are two hammer beams arranged, which are fixedly connected to each other at equal angles with the hammer frame as the center, and the first hammer teeth are evenly distributed at equal intervals along the radial direction of the hammer beam. The concentric rings where the first hammer teeth on one hammer beam are located do not completely overlap with the concentric rings where the first hammer teeth of the circumferentially adjacent group are located, and the hammering influence range of each first hammer tooth partially overlaps with the hammering influence ranges of the two first hammer teeth radially adjacent to it in the circumferentially adjacent group, and the second hammer teeth are evenly distributed circumferentially along the bottom surface of the hammer frame.

[0015] Through the above technical solution, the setting of the hammer frame and the second hammer tooth increases the hammering surface and improves the hammering strength. At the same time, the foundation pile hole can also guide the hammer frame, which is beneficial to the linear lifting and lowering of the hammer head.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model arranges the first hammer teeth on the same circular ring, and this arrangement makes the hammer head centrally symmetrical, the center of gravity coincides with the center, the hammer is not deflected during the hammering process, the hammering force is uniform, the hammering effect is stable, and the spacing between two radially adjacent first hammer teeth is less than twice the hammering influence diameter of each first hammer tooth. The number of hammer teeth can be reduced under the premise of covering the well bottom plane and ensuring the hammering effect, the crushing efficiency of a single hammer tooth is fully exerted, and the production cost of the hammer head is reduced.

[0018] The utility model arranges an arc-shaped steel plate at the outer end of the arm to support the hole wall, and the reaction force of the hole wall acts on the hard rock at the bottom of the hammer foot on the opposite side through the arm. Under the joint action of the impact force of the hammer head, the hard rock is subjected to concentrated force and is destroyed first until the reaction forces of the soft and hard rocks at the bottom of the hammer are balanced, and drilling is performed synchronously and evenly, so that the inclination of the hole is within the limit range. Therefore, the development of the inclined hole can be effectively limited, the quality of the impact hole is improved, and the bearing capacity of the foundation pile is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the hammer surface structure of the utility model.

[0023] Description of main symbols:

[0024] 1. Hammer body structure; 101. Hammer foot; 102. Connecting rope; 103. Foundation pile hole; 2. Hammer core column structure; 201. Hammer core column; 202. Boom; 203. Arc steel plate; 3. Hammer face structure; 301. Hammer face; 302. Hammer frame; 303. Hammer beam; 304. First hammer tooth; 305. Second hammer tooth; 306. Third hammer tooth; 307. Mounting hole. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0026] Example:

[0027] Please combine Figure 1-4 A bottom hole hammer device of this embodiment includes a hammer body structure 1, a hammer core column structure 2 and a hammer face structure 3, wherein the hammer core column structure 2 is located inside the hammer body structure 1, and the hammer face structure 3 is located at the bottom of the hammer body structure 1;

[0028] The hammer body structure 1 includes a hammer foot 101 , the top of which is fixedly connected with a connecting rope 102 , the outer surface of the hammer foot 101 is provided with a foundation pile hole 103 , the material of the hammer foot 101 is set to steel, and the rise of the hammer is operated by the connecting rope 102 .

[0029] The hammer core column structure 2 includes a hammer core column 201, the interior of the hammer core column 201 is fixedly connected with an arm 202, and both ends of the arm 202 are fixedly connected with an arc-shaped steel plate 203. The arc-shaped steel plate 203 at the outer end of the arm 202 is supported on the hole wall, and the reaction force of the hole wall acts on the hard rock at the bottom of the opposite hammer foot through the arm 202. Under the joint action of the impact force of the hammer head, the hard rock is subjected to concentrated force and is destroyed first until the reaction forces of the soft and hard rocks at the bottom of the hammer are balanced, and drilling is performed synchronously and evenly, so that the inclination of the hole is within the limit range, thereby effectively limiting the development of the inclined hole, improving the quality of the impact hole, and ensuring the bearing capacity of the foundation pile.

[0030] The material of the hammer core column 201 is set to steel, and the number of arc-shaped steel plates 203 is set to two. The width of the arc-shaped steel plate 203 is smaller than the width of the hammer foot 101, and its height is greater than the width. The arc-shaped steel plate 203 increases the hammer weight and the corresponding impact potential energy, accelerates the hole-making speed, improves the hole-making efficiency, and avoids mechanical losses, material waste, time delays and manual processing costs caused by processing inclined holes.

[0031] The hammer face structure 3 includes a hammer face 301, the surface of the hammer face 301 is fixedly connected to a hammer frame 302, a hammer beam 303 is fixedly connected inside the hammer frame 302, a first hammer tooth 304 is arranged on the surface of the hammer beam 303, a second hammer tooth 305 is arranged on the surface of the hammer frame 302, a third hammer tooth 306 is arranged on the outer wall of the hammer frame 302, the surfaces of the first hammer tooth 304, the second hammer tooth 305 and the third hammer tooth 306 are arranged on the mounting hole 307, and the third hammer tooth 306 enables the hammer head to scrape the foundation pile hole.

[0032] The hammer frame 302 is arranged in a circular ring shape, and two hammer beams 303 are arranged, which are fixedly connected to each other at equal angle intervals with the hammer frame 302 as the center, and the first hammer teeth 304 are evenly distributed at equal intervals along the radial direction of the hammer beam 303. The concentric rings where the first hammer teeth 304 on one hammer beam 303 are located do not completely overlap with the concentric rings where the first hammer teeth 304 of the circumferentially adjacent group are located, and the hammering influence range of each first hammer tooth 304 partially overlaps with the hammering influence ranges of the two first hammer teeth 304 adjacent to it in the radial direction in the circumferentially adjacent group. The second hammer teeth 305 are evenly distributed circumferentially along the bottom surface of the hammer frame 302. The arrangement of the hammer frame 302 and the second hammer teeth 305 increases the hammering surface and improves the hammering strength. At the same time, the pile hole 103 can also guide the hammer frame 302, which is beneficial to the linear lifting and lowering of the hammer head.

[0033] The implementation principle of a bottom hole impact hammer device in the embodiment of the present application is as follows: when in use, during the construction process, the hammer face 301 falls on the foundation pile hole 103, the deformation of the hammer face 301 is large at the soft rock, and small at the hard rock, the hammer foot 101 is inclined toward the soft rock side, the greater the hardness difference, the greater the inclination, and there is a relative slip trend, when the inclination of the hammer foot 101 reaches the standard deviation limit, the arc-shaped steel plate 203 at the outer end of the arm 202 is supported on the hole wall, and the reaction force of the hole wall acts on the hard rock at the bottom of the opposite hammer foot through the arm 202, and under the joint action of the impact force of the hammer head, the hard rock is concentrated and destroyed first, until the reaction forces of the soft and hard rocks at the bottom of the hammer are balanced, and drilling is performed synchronously and evenly, so that the inclination of the hole is within the limit range, thereby effectively limiting the development of the inclined hole, improving the quality of the impact hole, and ensuring the bearing capacity of the foundation pile. The first hammer teeth 304 are located on the same circular ring. This arrangement makes the hammer head centrally symmetrical, with the center of gravity coinciding with the center. The hammer does not deviate during the hammering process, the hammering force is uniform, and the hammering effect is stable. The spacing between two radially adjacent first hammer teeth 304 is less than twice the hammering influence diameter of each first hammer tooth 304, which can cover the bottom plane of the well and ensure the hammering effect.

[0034] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A bottom hole hammer device, characterized in that: It comprises a hammer body structure (1), a hammer core column structure (2) and a hammer face structure (3), wherein the hammer core column structure (2) is located inside the hammer body structure (1), and the hammer face structure (3) is located at the bottom of the hammer body structure (1); The hammer body structure (1) comprises a hammer foot (101), the top of the hammer foot (101) is fixedly connected with a connecting rope (102), and the outer surface of the hammer foot (101) is provided with a foundation pile hole (103).

2. A bottom hole hammer device according to claim 1, characterized in that: The material of the hammer foot (101) is set to be steel.

3. A bottom hole hammer device according to claim 1, characterized in that: The hammer core column structure (2) comprises a hammer core column (201), the interior of the hammer core column (201) is fixedly connected to an arm frame (202), and both ends of the arm frame (202) are fixedly connected to arc-shaped steel plates (203).

4. A bottom hole hammer device as claimed in claim 3, characterized in that: The material of the hammer core column (201) is set to be steel, the number of the arc-shaped steel plates (203) is set to be two, the width of the arc-shaped steel plates (203) is smaller than the width of the hammer foot (101), and the height thereof is greater than the width.

5. A bottom hole hammer device according to claim 1, characterized in that: The hammer face structure (3) comprises a hammer face (301), the surface of the hammer face (301) is fixedly connected to a hammer frame (302), a hammer beam (303) is fixedly connected inside the hammer frame (302), a first hammer tooth (304) is arranged on the surface of the hammer beam (303), a second hammer tooth (305) is arranged on the surface of the hammer frame (302), a third hammer tooth (306) is arranged on the outer wall of the hammer frame (302), and the surfaces of the first hammer tooth (304), the second hammer tooth (305) and the third hammer tooth (306) are arranged on the mounting hole (307).

6. A bottom hole hammer device according to claim 5, characterized in that: The hammer frame (302) is arranged in a circular ring shape, and two hammer beams (303) are arranged, which are fixedly connected to each other at equal angle intervals with the hammer frame (302) as the center, and the first hammer teeth (304) are evenly distributed at equal intervals along the radial direction of the hammer beam (303), wherein the concentric rings where the first hammer teeth (304) on one hammer beam (303) are located do not completely overlap with the concentric rings where the first hammer teeth (304) of the circumferentially adjacent group are located, and the hammering influence range of each first hammer tooth (304) partially overlaps with the hammering influence ranges of the two first hammer teeth (304) adjacent to it in the radial direction in the circumferentially adjacent group, and the second hammer teeth (305) are evenly distributed circumferentially along the bottom surface of the hammer frame (302).

Images