A new type of drill pipe pressure block

Abstract

The present invention discloses a novel drill pipe pressure block, comprising a plurality of pressure blocks (2) arranged at intervals on the drill pipe (1); the contact surface between the pressure block (2) and the drill pipe (1) is side surface one (3), and the side surface one (3) and side surface two (4) opposite to the side surface one (3) are both arc surfaces; the connection surface between the pressure block (2) and a key bar (6) is side surface three (5), the top surface of the pressure block (2) is a pressure surface (8), and the bottom surface is an inclined guiding inclined surface (9); the pressure block of the present invention combines the pressure platform, bevel teeth and external keys used in the existing drill pipe into an integrated structure, thereby avoiding stress concentration at the weld of the three components and improving the torsional strength; the pressure block (2) with an integrated structure can reduce the overall length compared with the existing pressure platform, bevel teeth and external keys, and is suitable for use in rotary drilling rigs with short pressure strokes, and is more suitable for use in drill pipes with shorter lengths.

Description

Technical Field

[0001] The invention relates to the technical field of drill rods of rotary drilling rigs, and in particular to a novel drill rod pressure block. Background Art

[0002] The drill rod is a rod connected to the drill bit in the drilling tool for transmitting power. During the drilling process of the drill rod, the outer key of the inner drill rod is driven by the inner key of the outer drill rod to rotate, and a certain pressure is applied to the inner drill rod to realize the drilling of the rotary drill rod. Some rotary drilling rigs in the prior art can only install drill rods with a shorter overall length, and the stroke of their hydraulic cylinders is short. Therefore, the requirements for the pressurization stroke of the drill rod are relatively strict. The pressurization blocks of some existing drill rods are composed of a pressurization platform, a bevel tooth, and an outer key. They are relatively long and are not suitable for the above-mentioned rotary drilling rigs. Therefore, it is necessary to design a pressurization block for the drill rod suitable for such rotary drilling rigs. Summary of the invention

[0003] The invention provides a novel drill pipe pressure block, which can solve the problem that the drill pipe pressure block in the prior art has a relatively long overall length and is not suitable for a rotary drilling rig with strict requirements on the pressure stroke.

[0004] A novel drill pipe pressure block comprises a plurality of pressure blocks arranged at intervals on the drill pipe;

[0005] The contact surface between the pressure block and the drill rod is side surface one, and the side surface one and side surface two opposite to the side surface one are both arc surfaces;

[0006] The connecting surface of the pressure block and the key strip is side surface three, and the side surface opposite to side surface three is side surface four;

[0007] The top surface of the pressure block is a pressure surface, and the bottom surface is an inclined guiding slope;

[0008] The included angle α between the guiding inclined surface and the key strip is 100°<α<160°.

[0009] Preferably, the angle α is 155°.

[0010] Preferably, the pressure block has a length of 550 mm, a thickness of 25 mm, and a width of 160 mm.

[0011] Preferably, the connection between the pressurizing surface and the side surface 4 is an arc surface.

[0012] Preferably, the pressure block is provided with a plurality of rivet holes, and the side surface three is connected to the key strip by welding.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the pressure block of the present invention integrates the pressure platform, the bevel teeth and the external key used in the prior art drill pipe into an integrated structure, thereby avoiding stress concentration at the weld of the three and improving the torsional strength;

[0014] The integrated pressure block can shorten the overall length compared with the existing pressure platform, bevel teeth and external key components, and is suitable for rotary drilling rigs with short pressure strokes, and is more suitable for shorter drill rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the drill rod of the present invention;

[0016] Figure 2 A three-dimensional diagram of a pressure block of the present invention;

[0017] Figure 3 It is a rear view of the pressure block of the present invention;

[0018] Figure 4 It is a top view of the pressure block of the present invention.

[0019] Description of reference numerals:

[0020] 1. Drill rod, 2. Pressure block, 3. Side one, 4. Side two, 5. Side three, 6. Key bar, 7. Side four, 8. Pressure surface, 9. Guide slope, 10. Rivet welding hole. DETAILED DESCRIPTION

[0021] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0022] like Figures 1 to 4 As shown, a novel drill rod pressure block provided by an embodiment of the present invention comprises a plurality of pressure blocks 2 arranged at intervals on the drill rod 1;

[0023] The contact surface between the pressure block 2 and the drill rod 1 is the side surface 3. Figure 4 As shown, the side surface 1 3 and the side surface 2 4 opposite to the side surface 1 3 are both arc surfaces;

[0024] The connecting surface of the pressure block 2 and the key bar 6 is the side surface 3 5, and the side surface opposite to the side surface 3 5 is the side surface 4 7;

[0025] The top surface of the pressure block 2 is a pressure surface 8, and the bottom surface is an inclined guide slope 9;

[0026] like Figure 1 As shown, the included angle α between the guide slope 9 and the key strip 6 is 100°<α<160°.

[0027] In order to further facilitate the movement of the inner key of the drill pipe from the pressure point to the slideway, preferably, the angle α is set to 155°.

[0028] The pressure block 2 has a length of 550 mm, a thickness of 25 mm, and a width of 160 mm, which is only a size provided in this embodiment. In fact, the overall size of the pressure block 2 is not limited and can be produced according to actual needs;

[0029] The pressure block 2 integrates the pressure platform, the bevel teeth and the external key into one integrated structure. Compared with the prior art in which the three parts are welded separately on the drill pipe 1, the torsion resistance and impact resistance of the pressure block 2 can be enhanced, and the service life can be improved;

[0030] The connection between the pressurizing surface 8 and the side surface 47 is an arc surface, which can better fit the drill rod.

[0031] The pressure block 2 is provided with a plurality of riveting holes 10, and the side surface three 5 is connected to the key bar 6 by welding.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit and essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new type of drill pipe pressure block, characterized in that: It comprises a plurality of pressure blocks (2) arranged at intervals on the drill rod (1); The contact surface between the pressure block (2) and the drill rod (1) is the side surface one (3), and the side surface one (3) and the side surface two (4) opposite to the side surface one (3) are both arc surfaces; The connecting surface of the pressure block (2) and the key bar (6) is the side surface three (5), and the side surface opposite to the side surface three (5) is the side surface four (7); The top surface of the pressure block (2) is a pressure surface (8), and the bottom surface is an inclined guide slope (9); The included angle α between the guiding inclined surface (9) and the key strip (6) is 100°<α<160°; The angle α is 155°; The pressure block (2) has a length of 550 mm, a thickness of 25 mm and a width of 160 mm; The connection between the pressurizing surface (8) and the side surface four (7) is an arc surface; The pressure block (2) is provided with a plurality of riveting holes (10), and the side surface three (5) is connected to the key strip (6) by welding.

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