Bundling hammer

Abstract

The utility model discloses a bundling hammer which comprises a body, a dust return pipe is arranged in the body, a plurality of drill bits are arranged at the bottom of the body, a sealing supporting assembly is arranged along the outer wall of the body, the sealing supporting assembly is attached to the outer wall of the body, and the sealing supporting assembly can be always in contact with the pile hole wall in the drilling process. By arranging the sealing supporting assembly, the strength of the outer wall of the body is enhanced, meanwhile, the sealing supporting assembly and the wall of the pile hole can effectively form the closed space, then it can be still guaranteed that a sealing area is formed between the portion below the sealing supporting assembly and the bottom of the pile hole after the mounting plate at the bottom is abraded, and dust is prevented from escaping outwards; due to the fact that the sealing supporting assembly is always in contact with the wall of the pile hole in the drilling process, the coaxiality of the whole pile hole in the drilling process is guaranteed, and the risk of drilling deviation is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, in particular to a cluster hammer. Background Art

[0002] Hammers are basic equipment for drilling engineering equipment and are generally divided into two types, one is pneumatic and the other is hydraulic. Pneumatic hammers use compressed air as the power medium and use the energy of compressed air to generate continuous impact loads at the bottom of the hole. At the same time, high-pressure air passes through the drill pipe and is ejected by the drill bit, blowing the dust inside the hole out to the outside, thereby playing the role of hole washing and ensuring the cleanliness of the inside of the hole.

[0003] The cluster hammer is generally composed of multiple impactors integrated together. The cluster hammer is driven by a propulsion mechanism to rotate and hammer the stone to form a hole. The dust formed by the external-discharge cluster hammer is discharged out of the pile hole through the dust channel on the side. The smoke and dust generated by this type of cluster hammer is very large, and it is impossible to observe or approach the construction site during construction; the internal-discharge cluster hammer uses the mounting plate at the bottom of the cluster hammer and the formed hole wall to form a closed space. High-pressure gas is ejected through the drill bit to carry stone chips and dust into the dust return pipe in the middle, and then the dust is discharged. This type of internal-discharge cluster hammer can be dust-free and the internal state of the pile can be observed while working. However, when the edge of the mounting plate is damaged or the diameter is reduced due to wear, it will not fit sufficiently with the hole wall and a certain gap will be generated. The dust and stone chips generated during the operation are very large, so it is easy for the stone chips and dust at the bottom of the hole to escape from this gap, causing environmental pollution and making it difficult to observe the state of the pile hole in real time. Utility Model Content

[0004] The purpose of the present utility model is to provide a cluster hammer in view of the above problems.

[0005] The utility model comprises a main body, wherein a dust return pipe is provided inside the main body, a plurality of drill bits are provided at the bottom, and a sealing support assembly is provided along the outer wall of the main body, and the sealing support assembly is arranged in contact with the outer wall of the main body. During the drilling process, the sealing support assembly can always maintain contact with the pile hole wall and form a closed space with the bottom of the pile hole. The sealing support assembly provided can enhance the strength of the outer wall of the main body while effectively forming a closed space with the pile hole wall, thereby ensuring that a sealing area is formed below the sealing support assembly and the bottom of the pile hole after the bottom mounting plate is worn, thereby preventing the escape of dust. In addition, since the sealing support assembly always maintains contact with the pile hole wall during the drilling process, the coaxiality of the overall pile hole is ensured during the drilling process, thereby greatly reducing the risk of drilling deviation.

[0006] Specifically, the sealing support assembly includes a sealing support strip, the outer diameter of which is equal to the maximum diameter of the main body. Therefore, during the drilling process, the sealing support strip can form a corrective effect with the bottom of the cluster hammer, prompting the cluster hammer to maintain the overall drilling direction consistent, thereby improving the coaxiality of the pile hole.

[0007] Specifically, the cross-section of the sealing support strip is a closed "U"-shaped structure. It can be understood that the circular end of the "U"-shaped sealing support strip contacts the pile hole wall. When drilling or lifting the cluster hammer, it is not easy for the cluster hammer to get stuck in the pile hole, thereby reducing the cost of professional manual salvage when the ordinary cluster hammer gets stuck.

[0008] Specifically, there are no less than two groups of sealing support assemblies. It can be understood that the more groups of sealing support assemblies there are, the more contact parts between the cluster hammer and the pile hole, which is more conducive to the verticality when the pile hole is formed.

[0009] Specifically, ribs are provided on the inner wall of the body, and the positions and numbers of the ribs correspond one-to-one with the sealing support assembly. The ribs provided on the inner wall of the body can provide support force for the body to prevent damage caused by insufficient strength.

[0010] Compared with the prior art, the beneficial effects of the present application are: the sealing support assembly provided not only enhances the strength of the outer wall of the main body, but also effectively forms a closed space with the pile hole wall, and thus can still ensure that a sealed area is formed below the sealing support assembly and the bottom of the pile hole after the bottom mounting plate is worn, thereby preventing dust from escaping. In addition, since the sealing support assembly always maintains contact with the pile hole wall during the drilling process, the coaxiality of the entire pile hole is ensured during the drilling process, greatly reducing the risk of drilling deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 : It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 : It is a schematic diagram of the structure of the utility model in use state;

[0013] Figure 3 :for Figure 2 Schematic diagram of the cross-section structure;

[0014] Figure 4 : It is a schematic diagram of the cross-sectional structure of the sealing support strip of the present invention.

[0015] Among them: 10, body; 20, drill bit; 30, sealing support strip; 40, dust; 50, pile hole; 60, rib; 70, dust return pipe. DETAILED DESCRIPTION

[0016] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some 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 making creative efforts shall fall within the scope of protection of the present invention.

[0017] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0018] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply 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 embodiments of the present invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0020] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will appreciate the applicability of other processes and / or the use of other materials.

[0022] Example 1: The purpose of this utility model is to provide a cluster hammer:

[0023] The utility model comprises a main body 10, wherein a dust return pipe 70 is provided inside the main body 10, and a plurality of drill bits 20 are provided at the bottom. A sealing support assembly is provided along the outer wall of the main body 10, and the sealing support assembly is arranged in contact with the outer wall of the main body 10. During the drilling process, the sealing support assembly can always maintain contact with the wall of the pile hole 50 and form a closed space with the bottom of the pile hole 50. The provided sealing support assembly can enhance the strength of the outer wall of the main body 10 while effectively forming a closed space with the wall of the pile hole 50. Therefore, even after the bottom mounting plate is worn, it can still ensure that a sealing area is formed between the bottom of the pile hole 50 and the sealing support assembly, thereby preventing the escape of dust 40. In addition, since the sealing support assembly always maintains contact with the wall of the pile hole 50 during the drilling process, the coaxiality of the entire pile hole 50 is ensured during the drilling process, thereby greatly reducing the risk of drilling deviation.

[0024] It can be understood that the drill bit 20 is a down-the-hole drill bit 20, and the external high-pressure gas can be ejected through the drill bit 20. Since the bottom part of the pile hole 50 forms a closed space with the sealing support assembly and the outer wall of the main body 10, the dust 40 cannot escape to the outside, thereby preventing the dust 40 and slag from polluting the environment. The dust 40 in this closed space is discharged through the dust return pipe 70, and can then be centrally processed to reduce the harm of the dust 40.

[0025] Specifically, the sealing support assembly includes a sealing support strip 30, the outer diameter of which is equal to the maximum diameter of the body 10. Therefore, during the drilling process, the sealing support strip 30 can form a corrective effect with the bottom of the cluster hammer, prompting the cluster hammer to maintain the overall drilling direction consistent, thereby improving the coaxiality of the pile hole 50.

[0026] Specifically, the cross-section of the sealing support strip 30 is a closed "U"-shaped structure. It can be understood that the circular end of the "U"-shaped sealing support strip 30 contacts the wall of the pile hole 50, and the contact area with the hole wall is small. Therefore, when drilling or lifting the cluster hammer, it is not easy for the cluster hammer to get stuck in the pile hole 50, thereby reducing the cost of professional manual salvage after the ordinary cluster hammer gets stuck.

[0027] Specifically, there are no less than two groups of sealing support assemblies. It can be understood that the more groups of sealing support assemblies there are, the more contact parts between the cluster hammer and the pile hole 50 are, which is more conducive to the verticality when the pile hole 50 is formed.

[0028] It can be understood that in this embodiment, there are three groups of sealing support assemblies, and the three groups of sealing support assemblies are evenly spaced and arranged on the main body 10. Not only can the sealing support assembly at the lowest position form a sealing area with the wall of the pile hole 50, but the sealing support assemblies spaced above can also form a sealing area, thereby playing a double protection role, improving the possibility of preventing dust 40 from escaping in this design, and thus improving safety.

[0029] Specifically, ribs 60 are provided on the inner wall of the main body 10, and the position and number of the ribs 60 correspond one-to-one with the sealing support assembly. The ribs 60 provided on the inner wall of the main body 10 can provide support force for the main body 10 to prevent damage caused by insufficient strength.

[0030] The above shows and describes the basic principles, main features and advantages of the utility model; technicians in this industry should understand that the utility model is not limited to the above embodiments, and the above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will also have various changes and improvements, and these changes and improvements will fall within the scope of the utility model to be protected; the scope of protection claimed by the present utility model is defined by the attached claims and their equivalents.

Claims

1. A cluster hammer, comprising a body (10), characterized in that: A dust return pipe (70) is provided inside the body (10), a plurality of drill bits (20) are provided at the bottom, and a sealing support assembly is provided along the outer wall of the body (10). The sealing support assembly is arranged in contact with the outer wall of the body (10). During the drilling process, the sealing support assembly can always maintain contact with the wall of the pile hole (50) and form a closed space with the bottom of the pile hole (50).

2. The cluster hammer according to claim 1, characterized in that: The sealing support assembly comprises a sealing support strip (30), the outer diameter of the sealing support strip (30) being equal to the maximum diameter of the body (10).

3. The cluster hammer according to claim 2, characterized in that: The cross section of the sealing support strip (30) is a closed "U"-shaped structure.

4. The cluster hammer according to claim 2, characterized in that: There are no less than two groups of sealing support components.

5. The cluster hammer according to claim 1, characterized in that: Ribs (60) are provided on the inner wall of the body (10), and the positions and numbers of the ribs (60) correspond one-to-one to the sealing support assembly.

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