阅读说明：本技术 一种液压破碎锤的钎杆 (Drill rod of hydraulic breaking hammer ) 是由 曾胜海 于 2020-04-10 设计创作，主要内容包括：本发明公开了一种液压破碎锤的钎杆,包括主钎杆和中部钎杆,所述主钎杆的中部成型有轴向竖直通孔,中部钎杆插套在轴向竖直通孔中,中部钎杆的底端的冲击尖锐部伸出轴向竖直通孔的底端,轴向竖直通孔的上部内侧壁成型有大直径孔段,中部钎杆的顶部外侧壁成型有延伸边,延伸边插套在大直径孔段中。本发明可以在液压缸的活塞杆单次冲击时可以实现中部钎杆和主钎杆的连续冲击,实现二次冲击,其大大提高破碎效率和效果。(The invention discloses a drill rod of a hydraulic breaking hammer, which comprises a main drill rod and a middle drill rod, wherein an axial vertical through hole is formed in the middle of the main drill rod, the middle drill rod is inserted and sleeved in the axial vertical through hole, an impact sharp part at the bottom end of the middle drill rod extends out of the bottom end of the axial vertical through hole, a large-diameter hole section is formed in the inner side wall of the upper part of the axial vertical through hole, an extension edge is formed on the outer side wall of the top of the middle drill rod, and the extension edge is inserted and sleeved in the large-diameter hole section. The invention can realize continuous impact of the middle drill rod and the main drill rod when the piston rod of the hydraulic cylinder is impacted for a single time, realize secondary impact and greatly improve the crushing efficiency and effect.)

1. A shank for a hydraulic demolition hammer, comprising a main shank (10) and a middle shank (20), characterised in that: the drill rod structure is characterized in that an axial vertical through hole (11) is formed in the middle of the main drill rod (10), the middle drill rod (20) is inserted in the axial vertical through hole (11), an impact sharp part (21) at the bottom end of the middle drill rod (20) extends out of the bottom end of the axial vertical through hole (11), a large-diameter hole section (12) is formed in the inner side wall of the upper portion of the axial vertical through hole (11), an extension edge (22) is formed in the outer side wall of the top of the middle drill rod (20), and the extension edge (22) is inserted in the large-diameter hole section (12).

2. A drill rod of a hydraulic breaking hammer according to claim 1, wherein: the large-diameter hole section (12) is sleeved with a buffer spring (1) in an inserting mode, the upper portion of the middle drill rod (20) is sleeved in the buffer spring (1) in an inserting mode, the top end of the buffer spring (1) exerts force on the bottom face of the extending edge (22), and the bottom end of the buffer spring (1) exerts force on the bottom end face of the large-diameter hole section (12).

3. A drill rod of a hydraulic breaking hammer according to claim 1, wherein: and a radially extending limiting ring part (13) is formed on the outer side wall of the top of the main drill rod (10).

4. A drill rod of a hydraulic breaking hammer according to claim 1, wherein: the drill rod structure is characterized in that a wear-resistant reinforcing sleeve (30) is inserted into the inner side wall of the axial vertical through hole (11), the middle drill rod (20) is inserted into the wear-resistant reinforcing sleeve (30), the outer side wall of the wear-resistant reinforcing sleeve (30) is tightly attached to the inner side wall of the axial vertical through hole (11), and the inner side wall of the wear-resistant reinforcing sleeve (30) is tightly attached to the inner side wall of the middle drill rod (20).

5. The drill rod of a hydraulic demolition hammer as set forth in claim 4, wherein: the outer side wall of the top of the wear-resistant reinforcing sleeve (30) is formed with an extending edge (31), the bottom surface of the extending edge (31) is pressed against the bottom end surface of the large-diameter hole section (12), and the bottom end of the buffer spring (1) is forced on the top surface of the extending edge (22).

6. A drill rod of a hydraulic breaking hammer according to claim 3, wherein: and the top surface of the limiting ring part (13) is fixed with a wear-resistant reinforcing annular part (2).

7. A drill rod of a hydraulic breaking hammer according to claim 1, wherein: and a middle wear-resistant reinforcing part (3) is fixed at the top of the extending edge (22) and the middle drill rod (20).

8. A drill rod of a hydraulic breaking hammer according to claim 1, wherein: the impact sharp part (21) at the bottom end of the middle drill rod (20) is a cross sharp part, a straight sharp part or a conical sharp part.

Technical Field

The invention relates to the technical field of drilling equipment, in particular to a drill rod of a hydraulic breaking hammer.

Background

A drill rod in an existing hydraulic breaking hammer is generally a single rod body, a piston rod of a hydraulic cylinder in the hydraulic breaking hammer is used for stretching back and forth to impact the single rod body, continuous impact on the single rod body is achieved to break, only one impact process is achieved in each impact, the frequency is not high, the effect is limited, and the impact process is not ideal.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a drill rod of a hydraulic breaking hammer, which can realize continuous impact of a middle drill rod and a main drill rod when a piston rod of a hydraulic cylinder is impacted for a single time, realize secondary impact and greatly improve the breaking efficiency and effect.

The scheme for solving the technical problems is as follows:

the drill rod of the hydraulic breaking hammer comprises a main drill rod and a middle drill rod, wherein an axial vertical through hole is formed in the middle of the main drill rod, the middle drill rod is inserted in the axial vertical through hole in a sleeved mode, an impact sharp part of the bottom end of the middle drill rod extends out of the bottom end of the axial vertical through hole, a large-diameter hole section is formed in the inner side wall of the upper portion of the axial vertical through hole, an extension edge is formed on the outer side wall of the top of the middle drill rod, and the extension edge is inserted in the large-diameter hole section in a sleeved mode.

The large-diameter hole section is inserted and sleeved with a buffer spring, the upper part of the middle drill rod is inserted and sleeved in the buffer spring, the top end of the buffer spring is stressed on the bottom surface of the extending edge, and the bottom end of the buffer spring is stressed on the bottom end surface of the large-diameter hole section.

And a radially extending limiting ring part is formed on the outer side wall of the top of the main drill rod.

The drill rod comprises an axial vertical through hole, a middle drill rod and a drill rod, wherein the inner side wall of the axial vertical through hole is inserted and sleeved with a wear-resistant reinforcing sleeve, the middle drill rod is inserted and sleeved in the wear-resistant reinforcing sleeve, the outer side wall of the wear-resistant reinforcing sleeve is tightly attached to the inner side wall of the axial vertical through hole, and the inner side wall of the wear-resistant reinforcing sleeve is tightly attached.

The top outer side wall of the wear-resistant reinforcing sleeve is formed with an extending edge, the bottom surface of the extending edge is pressed against the bottom end surface of the large-diameter hole section, and the bottom end of the buffer spring is forced on the top surface of the extending edge.

And the top surface of the limiting ring part is fixedly provided with a wear-resistant reinforcing annular part.

And a middle wear-resistant reinforcing part is fixed at the top of the extending edge and the middle drill rod.

The impact sharp part at the bottom end of the middle drill rod is a cross sharp part, a straight sharp part or a conical sharp part.

The invention has the following outstanding effects: compared with the prior art, the continuous impact of the middle drill rod and the main drill rod can be realized when the piston rod of the hydraulic cylinder is impacted for a single time, the secondary impact is realized, and the crushing efficiency and the crushing effect are greatly improved.

Drawings

FIG. 1 is a schematic view of a partial structure of the present invention;

FIG. 2 is a schematic view of the construction of the main and middle drill rods of the present invention after impact.

Detailed Description