Compaction pile rammer head dredging negative air pressure device

Abstract

The utility model provides a compaction pile rammer head dredging negative pressure device, and belongs to the technical field of rammer exhaust. The compaction pile rammer head dredging negative pressure device comprises a cylindrical rammer, a rammer head and a rammer tip, the cylindrical rammer and the rammer head are each internally provided with a cavity structure, the rammer tip is used for blocking the front end of a cavity of the rammer head, an exhaust hole is formed in the rammer head, an exhaust hole communicated with the cavity of the rammer head is formed in the rammer head, and the rammer head is provided with an exhaust hole communicated with the cavity of the rammer head. An annular dredging component is arranged on the hammer head, and in the hammer pulling process, the annular dredging component can control the exhaust hole to be exposed under the friction effect of a pile hole wall soil layer. The device has the advantages of assisting in dredging and exhausting at the bottom end of the pile hole, being simple to manufacture, convenient to take materials and suitable for construction in foundations of soft soil layers such as various silty soil, silty clay and cohesive soil.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust of a rammer, in particular to a negative air pressure device for clearing the head of a compaction pile rammer. Background Art

[0002] Compaction pile construction is a relatively traditional construction process that has been widely used in foundation treatment projects. With the continuous development and improvement of this process, the depth of pile hole treatment has increased, and the difficulty of the foundation that needs to be solved has increased. The problem that follows is that negative air pressure is very likely to be generated at the bottom of the pile hole during the extraction process, and the increased friction in the soil layer makes it difficult to extract the hammer. At present, in the improvement of unblocking negative air pressure, the common practice is to increase the exhaust holes of the rammer, but when dealing with clay foundations with a high water content, due to the small diameter of the exhaust holes, blockage is very likely to occur. There is also a dredging device set inside the rammer, but its disadvantage is that the structure is complex, the cost is high, and it is not easy to promote and use. Utility Model Content

[0003] In order to solve the above technical problems, the utility model proposes a negative air pressure device for clearing the head of a compaction pile rammer.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A negative air pressure device for clearing the head of a compaction pile rammer comprises a cylindrical rammer, a hammer head and a hammer tip. The cylindrical rammer and the hammer head are both arranged with a cavity structure. The hammer tip is used to block the front end of the cavity of the hammer head. An exhaust hole is arranged on the hammer head. The hammer head is arranged with an exhaust hole connected to its cavity. The hammer head is arranged with an annular clearing component. During the hammer pulling process, the annular clearing component can control the exhaust hole to be exposed under the friction of the soil layer on the pile hole wall.

[0006] Furthermore, the annular dredging component includes an annular part and a slider, the inner end of the slider is slidably mounted on the side of the hammer head, the annular part is sleeved on the hammer head, and one end of the annular part is supported by the outer end of the slider, and the slider blocks or exposes the exhaust hole by moving upward or downward.

[0007] Furthermore, the outer end of the sliding block is arranged into an "L"-shaped structure, and the annular portion is arranged into a truncated cone-shaped structure along the conical surface of the hammer head.

[0008] Furthermore, a slot is provided on the side of the hammer head, the inner end of the slider is slidably arranged in the slot, and the outer end of the exhaust hole passes through the inner wall surface of the slot, and the slot is arranged at 1 / 3 of the front end of the hammer head near the hammer tip.

[0009] Furthermore, the outer end of the slider is provided to include a first part and a second part, the first part is an "L"-shaped structure, the second part is an "I"-shaped structure, the inner end of the first part is rotatably connected to the outer end of the second part, and one side of the bottom of the annular part is located at the junction of the first part and the second part.

[0010] Furthermore, a guide block is provided on the side of the second part, a guide groove is provided in the hammer head, and the guide block is slidably installed in the guide groove.

[0011] Furthermore, two exhaust holes are provided, the exhaust holes are circular holes, and the two exhaust holes are distributed up and down.

[0012] Furthermore, the exhaust hole is a strip-shaped hole.

[0013] Furthermore, the hammer tip is conical, and the top end of the hammer tip can be inserted into the hammer head and threadedly connected to the hammer head, and a rubber ring is sleeved on the top of the hammer tip.

[0014] The utility model has the following beneficial effects:

[0015] 1. When the rammer of the utility model rams into a deep hole, the friction of the soil layer on the side wall of the pile hole is used to cause the annular dredging component to move up and down during the rammer pulling process to expose the exhaust hole that penetrates the hammer cavity, thereby dredging the negative air pressure.

[0016] 2. The utility model can be installed and used on various types of deep-hole compaction hammers, and is suitable for construction in various clay or soft soil foundations. It is easy to obtain materials and is simple to make. It is safe and effective. It can be used for a long time after one modification, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the utility model when the exhaust hole is a circular hole;

[0018] Figure 2 It is a schematic diagram of the outer end of the slider of the utility model including the first part and the second part;

[0019] Figure 3 This utility model Figure 2 Schematic diagram of the middle hammer after it is cut open;

[0020] Figure 4 This utility model Figure 3 Enlarged view of point A in .

[0021] In the figure: 1. cylindrical rammer; 2. hammer head; 3. hammer tip; 3.1. rubber ring; 4. slot; 5. slider; 6. annular part; 7. exhaust hole; 8. first part; 9. cavity; 10. second part; 11. guide block; 12. guide groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Reference Figures 1 to 4 The present embodiment provides a negative air pressure device for clearing the two parts of a compaction pile rammer, comprising a cylindrical rammer 1, a hammer head 2 and a hammer tip 3. The cylindrical rammer 1 and the hammer head 2 are both provided with a cavity 9 structure. The hammer tip 3 is used to block the front end of the cavity 9 of the hammer head 2. An exhaust hole 7 is provided on the hammer head 2. The hammer head 2 is provided with an exhaust hole 7 connected to its cavity 9. The hammer head 2 is provided with an annular clearing component. During the hammer pulling process, the annular clearing component can control the exhaust hole 7 to be exposed under the friction of the soil layer on the pile hole wall.

[0024] When the rammer is used to pull out a deep hole, the friction of the soil layer on the side wall of the pile hole is used to cause the annular dredging component to move up and down during the rammer's pulling-out process, thereby controlling the exposure and covering of the exhaust hole 7. When the exhaust hole 7 that is connected to the hammer body cavity 9 is exposed, the negative air pressure can be cleared, which is convenient for the rammer to pull out of the deep hole.

[0025] The annular dredging component includes an annular portion 6 and a slider 5. The inner end of the slider 5 is slidably mounted on the side of the hammer head 2. The annular portion 6 is sleeved on the hammer head 2, and one end of the annular portion 6 is supported by the outer end of the slider 5. The slider 5 blocks or exposes the exhaust hole 7 by moving upward or downward. During the hammer extraction process, the annular portion 6 moves up and down on the side of the hammer head 2 through friction with the soil layer on the side wall of the pile hole. At this time, the annular portion 6 can drive the slider 5 to move up and down to control the exposure and blocking of the exhaust hole 7, and can form a continuous disturbance at the mouth of the exhaust hole 7 to assist in dredging and exhausting the bottom end of the pile hole.

[0026] The outer end of the slider 5 is set to an "L" shape, and the annular portion 6 is set to a truncated cone structure along the conical surface of the hammer head 2. In this way, the outer end of the slider 5 can effectively constrain the annular portion 6, so that the annular portion 6 can effectively move up and down.

[0027] A slot 4 is provided on the side of the hammer head 2, the inner end of the slider 5 is slidably disposed in the slot 4, and the outer end of the exhaust hole 7 passes through the inner wall of the slot 4, and the slot 4 is disposed at 1 / 3 of the front end of the hammer head 2 near the hammer tip 3. The slot 4 is used to stably mount the inner end of the slider 5 on the hammer head 2, so as to effectively support the annular portion 6.

[0028] Reference Figure 1 In one example, two exhaust holes 7 are provided, the exhaust holes 7 are circular holes, and the two exhaust holes 7 are distributed up and down. The provision of two exhaust holes 7 can reduce the size of a single exhaust hole 7 and prevent soil from entering the exhaust hole 7 and causing blockage.

[0029] Reference Figure 4 In another example, the exhaust hole 7 is a strip-shaped hole. Such a configuration can increase the air flow of the exhaust hole 7 and improve the negative pressure dredging effect.

[0030] Reference Figures 2 to 3 The outer end of the slider 5 is provided with a first part 8 and a second part 10. The first part 8 is an "L"-shaped structure, and the second part 10 is an "I"-shaped structure. The inner end of the first part 8 is rotatably connected to the outer end of the second part 10, and one side of the bottom of the annular part 6 is located at the junction of the first part 8 and the second part 10.

[0031] Specifically, during the hammer extraction process, the top of the outer end of the first part 8 will rotate up and down due to the friction of the soil layer on the side wall of the pile hole. At this time, the inner end of the first part 8 will repeatedly warp the annular part 6 to increase the disturbance effect on the exhaust hole 7, which can prevent soil from accumulating on the side of the hammer head 2 and affecting the gas circulation of the exhaust hole 7, thereby improving the disturbance effect.

[0032] Reference Figure 4 A guide block 11 is provided on the side of the second part 10, a guide groove 12 is provided in the hammer head 2, and the guide block 11 is slidably installed in the guide groove 12. The cooperation between the guide block 11 and the guide groove 12 further improves the guiding effect and stability of the slider 5.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A negative air pressure device for dredging the head of a compaction pile rammer, characterized in that: The utility model comprises a columnar rammer (1), a hammer head (2) and a hammer tip (3); the columnar rammer (1) and the hammer head (2) are both provided with a cavity (9) structure; the hammer tip (3) is used to block the front end of the cavity (9) of the hammer head (2); the hammer head (2) is provided with an exhaust hole (7); the hammer head (2) is provided with an exhaust hole (7) connected with the cavity (9); the hammer head (2) is provided with an annular dredging component; during the hammer extraction process, the annular dredging component can control the exhaust hole (7) to be exposed under the friction of the soil layer on the pile hole wall.

2. A negative air pressure device for dredging the head of a compaction pile rammer as claimed in claim 1, characterized in that: The annular dredging component comprises an annular portion (6) and a slider (5), wherein the inner end of the slider (5) is slidably mounted on the side of the hammer head (2), the annular portion (6) is sleeved on the hammer head (2), and one end of the annular portion (6) is supported by the outer end of the slider (5), and the slider (5) blocks or exposes the exhaust hole (7) by moving upward or downward.

3. A negative air pressure device for dredging the head of a compaction pile rammer as claimed in claim 2, characterized in that: The outer end of the sliding block (5) is arranged in an "L"-shaped structure, and the annular portion (6) is arranged in a truncated cone-shaped structure along the conical surface of the hammer head (2).

4. A negative air pressure device for dredging the head of a compaction pile rammer as claimed in claim 2, characterized in that: A slot (4) is provided on the side of the hammer head (2), the inner end of the slider (5) is slidably arranged in the slot (4), and the outer end of the exhaust hole (7) passes through the inner wall surface of the slot (4), and the slot (4) is arranged at 1 / 3 of the front end of the hammer head (2) close to the hammer tip (3).

5. A negative air pressure device for dredging the head of a compaction pile rammer as claimed in claim 2, characterized in that: The outer end of the slider (5) comprises a first part (8) and a second part (10); the first part (8) is an "L"-shaped structure, the second part (10) is an "I"-shaped structure, the inner end of the first part (8) is rotatably connected to the outer end of the second part (10), and one side of the bottom of the annular part (6) is located at the junction of the first part (8) and the second part (10).

6. A negative air pressure device for dredging the head of a compaction pile rammer as claimed in claim 5, characterized in that: A guide block (11) is provided on the side of the second part (10), a guide groove (12) is provided in the hammer head (2), and the guide block (11) is slidably installed in the guide groove (12).

7. A negative air pressure device for dredging the head of a compaction pile rammer as claimed in claim 1, characterized in that: Two exhaust holes (7) are provided, the exhaust holes (7) are circular holes, and the two exhaust holes (7) are distributed up and down.

8. A negative air pressure device for dredging the head of a compaction pile rammer as claimed in claim 1, characterized in that: The exhaust hole (7) is a strip-shaped hole.

9. A negative air pressure device for dredging the head of a compaction pile rammer as claimed in claim 1, characterized in that: The hammer tip (3) is conical, and the top end of the hammer tip (3) can be inserted into the hammer head (2) and threadedly connected to the hammer head (2), and a rubber ring (3.1) is sleeved on the top of the hammer tip (3).

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