Drilling machine power head striking hammer

Abstract

The utility model provides a percussion hammer for a power head of a drilling machine. The percussion hammer comprises a hydraulic seat, a vibration percussion part and a buffer energy storage assembly, the hydraulic seat is provided with a hydraulic cavity, a liquid inlet and a liquid outlet, the vibration striking part is arranged in the hydraulic cavity, and the tail end extends out of the first end of the hydraulic seat; the buffering energy storage assembly is arranged at the second end of the hydraulic base and comprises a buffering base and a gland, a buffering liquid cavity is formed in the buffering base, a buffering air cavity is formed in the gland, the buffering liquid cavity is communicated with the hydraulic cavity, the buffering air cavity is communicated with the buffering liquid cavity, and an elastic diaphragm used for separation is arranged between the buffering liquid cavity and the buffering air cavity. The impact hammer can buffer and store energy for hydraulic force in the vibration impact operation process, operation stability is guaranteed, vibration is prevented from being transmitted to other structures to affect operation precision or damage to parts for a long time as much as possible, reliability of the impact hammer is improved, and meanwhile the impact hammer has the advantages of being convenient to install, detach and replace quick-wear parts.

Description

Technical Field

[0001] The utility model relates to the technical field of power heads for pile hole drilling operations, in particular to a percussion hammer for the power head of a drilling rig. Background Art

[0002] Pile drilling rigs are specialized mechanical equipment widely used in water well and pile hole construction. They are widely used in water well construction in water-scarce areas, in the drilling of air conditioning wells in ground-source heat pump technology, and in the construction of pile holes for high-rise building foundations and bridge foundations in urban construction. Pile drilling rigs are typically also equipped with a vibration mechanism, which uses the vibration generated by the vibration mechanism to perform vibratory hammering operations. Vibration is also transmitted and controlled based on hydraulic pressure. When high-frequency switching of positive and negative pressure is applied to the vibration mechanism, the circulation of liquid within the vibration mechanism further intensifies the vibration. This vibration may also be transmitted to other structures of the power head, causing greater overall vibration, affecting the operation process and service life of other structures. Utility Model Content

[0003] The purpose of the utility model is to provide a striking hammer with a buffering and energy storage function during vibration striking operations in response to the deficiencies in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned object, the utility model provides a drilling rig power head hammer, comprising a hydraulic seat, a vibrating striking part, and a buffer energy storage component;

[0005] The hydraulic seat is provided with a hydraulic cavity, a liquid inlet and a liquid outlet, the liquid inlet is used to introduce liquid into the hydraulic cavity and provide positive pressure, the liquid outlet is used for liquid backflow and provides negative pressure, the vibrating striking part is provided in the hydraulic cavity, and the end of the vibrating striking part extends to the outside of the first end of the hydraulic seat;

[0006] The buffer energy storage assembly is arranged at the second end of the hydraulic seat, and includes a buffer seat and a pressure cover. A buffer chamber is provided in the buffer seat, and a buffer air chamber is provided in the pressure cover. The buffer chamber is connected with the hydraulic chamber, and the buffer air chamber is connected with the buffer chamber. An elastic diaphragm is provided between the buffer chamber and the buffer air chamber, and the elastic diaphragm separates the buffer chamber from the buffer air chamber. The elastic diaphragm is made of elastic material.

[0007] Furthermore, a fixing plate is provided between the buffer energy storage assembly and the hydraulic seat, and the buffer energy storage assembly is connected to the hydraulic seat through the fixing plate.

[0008] Furthermore, bolt holes are correspondingly provided on the fixing plate, the buffer seat and the pressure cover, and mounting bolts are provided in the bolt holes to fix the pressure cover to the buffer seat, the buffer seat is fixed to the fixing plate, and the fixing plate is fixed to the hydraulic seat through the bolt holes and the mounting bolts, and a sealing ring is provided between the pressure cover and the buffer seat.

[0009] Furthermore, a liquid hole is provided on the buffer seat, and the liquid hole is communicated with the buffer chamber, and the liquid hole is communicated with the hydraulic chamber through a pipeline.

[0010] Furthermore, the buffer seat is provided with an annular groove, and the elastic diaphragm is provided with an annular clamping block matching the annular groove. After the annular clamping block is clamped into the annular groove, it is pressed by the pressure cover.

[0011] Furthermore, an inflation valve is provided on the gland, and the inflation valve is used to connect to an inflation system to inflate the buffer air cavity.

[0012] Furthermore, the buffer energy storage components are provided in two groups, which are respectively located on both sides of the second end of the hydraulic seat.

[0013] The above solution of the utility model has the following beneficial effects:

[0014] The drilling rig power head hammer provided by the utility model can buffer and store hydraulic pressure during the vibration striking operation by means of the energy storage component, thereby ensuring the smoothness of the operation and avoiding as much as possible the transmission of vibration to other structures that may affect the operation accuracy or cause long-term damage to parts, thereby improving the reliability of the hammer and having the characteristics of convenient installation, disassembly and replacement of wearing parts.

[0015] Other beneficial effects of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a side view of the overall structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the buffer energy storage component of the present utility model.

[0019] [Description of Reference Numerals]

[0020] 1-Hydraulic seat; 2-Vibration striking part; 3-Buffer seat; 4-Gland; 5-Buffer chamber; 6-Buffer air chamber; 7-Elastic diaphragm; 8-Fixed plate; 9-Bolt hole; 10-Mounting bolt; 11-Sealing ring; 12-Liquid hole; 13-Inflation valve. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the embodiments described are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a locking connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1 、 Figure 2 As shown, an embodiment of the present invention provides a drilling rig power head hammer, comprising a hydraulic base 1, a vibrating striking unit 2, and a buffer energy storage assembly. The hydraulic base 1 is provided with a hydraulic chamber, and the vibrating striking unit 2 is rod-shaped and located within the hydraulic chamber. The hydraulic base 1 is also provided with a liquid inlet and a liquid outlet. The liquid inlet is used to introduce liquid into the hydraulic chamber and provide positive pressure, while the liquid outlet is used to provide negative pressure for liquid return. High-frequency switching causes the vibrating striking unit 2 to vibrate and perform operations.

[0025] The first end of the hydraulic seat 1 is provided with an output port, and the end of the vibration striking part 2 extends from the output port to the outside. The buffer energy storage component is provided at the second end of the hydraulic seat 1, and is used to buffer and store the hydraulic pressure in the hydraulic cavity. Figure 3As shown, the buffer energy storage assembly includes a buffer seat 3 and a pressure cover 4. A buffer chamber 5 is provided in the buffer seat 3, and a buffer air chamber 6 is provided in the pressure cover 4. The buffer chamber 5 is connected to the hydraulic chamber, and the buffer air chamber 6 is connected to the buffer chamber 5, and the two together constitute the buffer chamber. At the same time, an elastic diaphragm 7 is provided between the buffer chamber 5 and the buffer air chamber 6. The elastic diaphragm 7 separates the buffer chamber 5 from the buffer air chamber 6. The elastic diaphragm 7 is made of elastic material and can be deformed under the action of hydraulic pressure. Therefore, when the hydraulic chamber is under positive pressure, the liquid enters the buffer chamber 5 from the hydraulic chamber and transmits the liquid pressure to the elastic diaphragm 7, causing the elastic diaphragm 7 to deform and extend toward the buffer air chamber 6, thereby producing a buffering effect on the liquid pressure in the hydraulic chamber, preventing the hydraulic shock from being excessively transmitted to the vibration striking part 2, and when the hydraulic chamber is under negative pressure, the elastic diaphragm 7 can be elastically reset.

[0026] In this embodiment, the buffer energy storage assembly is connected to the hydraulic seat 1 through the fixed plate 8. Among them, bolt holes 9 are correspondingly provided on the fixed plate 8, the buffer seat 3 and the pressure cover 4, and the pressure cover 4 is fixed to the buffer seat 3 by installing bolts 10, and the buffer seat 3 is fixed to the fixed plate 8 at the same time. In addition, the fixed plate 8 is fixed to the hydraulic seat 1 through the bolt holes 9 and the mounting bolts 10. Among them, a sealing ring 11 is provided between the pressure cover 4 and the buffer seat 3 to ensure the sealing of each chamber. It should be noted that a liquid hole 12 is provided on the buffer seat 3, and the liquid hole 12 is connected to the buffer chamber 5 inside the buffer seat 3, and the liquid hole 12 is connected to the hydraulic chamber through a pipeline.

[0027] As a preferred embodiment, in this embodiment, an annular groove is provided on the buffer seat 3, and an annular block is provided on the elastic diaphragm 7 to match the annular groove. During installation, the annular block of the elastic diaphragm 7 is inserted into the annular groove and then compressed by the gland 4. Due to the inherent properties of the elastic material, a sealing effect is also generated even after the gland 4 is compressed, thereby sealing the buffer chamber 5 and the buffer air chamber 6.

[0028] As a preferred embodiment, in this embodiment, the gland 4 is also provided with an inflation valve 13, which can be connected to the inflation system to inflate the buffer air chamber 6 so that the buffer air chamber 6 reaches a preset air pressure. Therefore, this solution can pre-deform the elastic diaphragm 7 by inflation, thereby adjusting the actual size of the buffer chamber 5 and the buffer air chamber 6, as well as the pre-tightening force of the elastic diaphragm 7, so as to adapt to different vibration and impact conditions and achieve the purpose of flexible adjustment. Among them, the elastic diaphragm 7 is preferably made of rubber material, which is easy to obtain and has low cost. Since the elastic diaphragm 7 adopts an annular clamping and compression method, it is relatively easy to disassemble and replace.

[0029] As a preferred embodiment, in this embodiment, two groups of buffer energy storage components are provided, which are respectively located on both sides of the second end of the hydraulic seat 1 to facilitate arrangement. By providing two groups of buffer energy storage components, a better effect is achieved, so that the striking hammer can buffer and store the hydraulic pressure during operation, thereby ensuring the smoothness of the operation, avoiding as much as possible the transmission of vibration to other structures to affect the operation accuracy or cause long-term damage to parts, and improving the reliability of the striking hammer.

[0030] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A drilling rig power head hammer, characterized in that: It includes a hydraulic seat, a vibration striking part, and a buffer energy storage component; The hydraulic seat is provided with a hydraulic cavity, a liquid inlet and a liquid outlet, the liquid inlet is used to introduce liquid into the hydraulic cavity and provide positive pressure, the liquid outlet is used for liquid backflow and provides negative pressure, the vibrating striking part is provided in the hydraulic cavity, and the end of the vibrating striking part extends to the outside of the first end of the hydraulic seat; The buffer energy storage assembly is arranged at the second end of the hydraulic seat, and includes a buffer seat and a pressure cover. A buffer chamber is provided in the buffer seat, and a buffer air chamber is provided in the pressure cover. The buffer chamber is connected with the hydraulic chamber, and the buffer air chamber is connected with the buffer chamber. An elastic diaphragm is provided between the buffer chamber and the buffer air chamber, and the elastic diaphragm separates the buffer chamber from the buffer air chamber. The elastic diaphragm is made of elastic material.

2. The drilling rig power head hammer according to claim 1, characterized in that: A fixing plate is provided between the buffer energy storage component and the hydraulic seat, and the buffer energy storage component is connected to the hydraulic seat through the fixing plate.

3. The drilling rig power head hammer according to claim 2, characterized in that: The fixing plate, the buffer seat and the pressure cover are all provided with bolt holes correspondingly, and mounting bolts are provided in the bolt holes to fix the pressure cover to the buffer seat, and the buffer seat is fixed to the fixing plate, and the fixing plate is fixed to the hydraulic seat through the bolt holes and the mounting bolts, and a sealing ring is provided between the pressure cover and the buffer seat.

4. The drilling rig power head hammer according to claim 1, characterized in that: The buffer seat is provided with a liquid hole, which is communicated with the buffer chamber. At the same time, the liquid hole is communicated with the hydraulic chamber through a pipeline.

5. The drilling rig power head hammer according to claim 1, characterized in that: The buffer seat is provided with an annular groove, and the elastic diaphragm is provided with an annular clamping block matching the annular groove. After the annular clamping block is clamped into the annular groove, it is pressed tightly by the pressure cover.

6. The drilling rig power head hammer according to claim 1, characterized in that: The gland is also provided with an inflation valve, which is used to connect to an inflation system to inflate the buffer air cavity.

7. A drilling rig power head hammer according to any one of claims 1 to 6, characterized in that: The buffer energy storage components are provided in two groups, which are respectively located on both sides of the second end of the hydraulic seat.

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