Novel rock drill internal rotating mechanism

Abstract

The utility model discloses a novel rock drill internal rotating mechanism which comprises a bit shank spline sleeve, one end of the bit shank spline sleeve is fixedly connected with a bit shank spline sleeve disc, a sleeve disc opening is formed in the middle of the front face of the bit shank spline sleeve disc, and the inner side of the sleeve disc opening is fixedly connected with a spline strip. A positioning pin is fixedly connected to the outer side, away from the sleeve disc opening, of the front face of the bit shank spline sleeve disc, the front face of the bit shank spline sleeve disc is movably connected with a bit shank holding sleeve through the sleeve disc opening, one end of the bit shank holding sleeve is fixedly connected with a bit shank holding sleeve disc, and a positioning opening is formed in the other end of the bit shank holding sleeve. According to the internal rotating mechanism of the rock drill, the bit shank spline housing disc and the bit shank holding sleeve are provided with the positioning pin and the positioning opening respectively, so that the bit shank spline housing disc and the bit shank holding sleeve can play a role in fixing, and when the rotating mechanism rotates, internal dislocation friction can be reduced, loss can be reduced, and the purposes of reducing cost and increasing efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rock drills, in particular to a novel internal rotating mechanism of a rock drill. Background Art

[0002] A rock drill is a tool used to directly mine stone. It drills holes in the rock layer so that explosives can be placed to blast the rock, thereby completing the mining of stone or other stone projects. In addition, a rock drill can also be used as a destroyer to break hard layers such as concrete. Rock drills can be divided into four categories according to their power source: pneumatic rock drills, internal combustion rock drills, electric rock drills, and hydraulic rock drills.

[0003] However, during the use of the existing rock drill, when the rock drill is rotating and the drill is stuck, blunt force will be generated between the spline sleeve and the holding sleeve. Under long-term action, the wear of the inner wall and seal of the spline sleeve will be accelerated, increasing the cost of use. For this reason, we propose a new internal rotating mechanism for the rock drill. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides a novel internal rotating mechanism of a rock drill to solve the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a new internal rotating mechanism of a rock drill, including a shank spline sleeve, one end of the shank spline sleeve is fixedly connected to a shank spline sleeve disc, a sleeve disc opening is provided in the middle position of the front side of the shank spline sleeve disc, a spline bar is fixedly connected to the inner side of the sleeve disc opening, a locating pin is fixedly connected to the outer side of the front side of the shank spline sleeve disc away from the sleeve disc opening, a shank holding sleeve is movably connected to the front side of the shank spline sleeve disc through the sleeve disc opening, one end of the shank holding sleeve is fixedly connected to the shank holding sleeve disc, a holding sleeve opening is provided on the front side of the shank holding sleeve disc, and a locating opening is provided at the other end of the shank holding sleeve disc.

[0008] Preferably, a spline sleeve groove is provided on the outer side of the front side of the spline sleeve of the shank, and six spline sleeve grooves are arranged at equal intervals.

[0009] Preferably, a holding sleeve groove and a holding sleeve disc groove are respectively provided on the outer side of the shank holding sleeve disc, and a plurality of holding sleeve disc grooves are provided, and the plurality of holding sleeve disc grooves are of the same size.

[0010] Preferably, the diameter of the positioning pin is matched with the inner diameter of the positioning opening, and three positioning pins and three positioning openings are provided, and the three positioning pins and the positioning openings are movably connected.

[0011] Preferably, eight spline bars are provided, and the eight spline bars are arranged equidistantly on the inner side of the sleeve opening.

[0012] Preferably, the shank spline sleeve and the shank spline sleeve disc are an integrated structure, and the outer surfaces of the shank spline sleeve and the shank spline sleeve disc are smooth.

[0013] (III) Beneficial effects

[0014] The utility model provides a novel internal rotating mechanism of a rock drill, which has the following beneficial effects:

[0015] (1) The internal rotating mechanism of the new rock drill is provided with positioning pins and positioning holes. The internal rotating mechanism of the rock drill is provided with positioning pins and positioning holes on the shank spline sleeve and the shank holding sleeve respectively. When the spline sleeve needs to be docked with the holding sleeve, the positioning pin on the shank spline sleeve is aligned with the positioning hole on the shank holding sleeve, and then the positioning pin is inserted into the positioning hole, so that the shank spline sleeve and the shank holding sleeve can play a fixing role. When the rotating mechanism is rotating, the internal misalignment friction can be reduced, the loss can be reduced, and the purpose of reducing cost and increasing efficiency can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a cross-sectional view of the spline sleeve of the shank end of the utility model;

[0018] Figure 3 It is a partial structural schematic diagram of the spline sleeve of the shank of the utility model;

[0019] Figure 4 It is a cross-sectional view of a drill tail holding sleeve of the utility model.

[0020] In the figure: 1. spline sleeve of drill tail; 2. spline sleeve of drill tail; 201. positioning pin; 202. sleeve opening; 203. spline strip; 3. spline sleeve groove; 4. drill tail holding sleeve; 401. positioning opening; 5. drill tail holding sleeve; 6. holding sleeve groove; 7. holding sleeve opening; 8. holding sleeve groove. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution: a novel internal rotating mechanism of a rock drill, comprising a shank spline sleeve 1, one end of the shank spline sleeve 1 is fixedly connected with a shank spline sleeve disc 2, a sleeve disc opening 202 is provided in the middle position of the front face of the shank spline sleeve disc 2, a spline strip 203 is fixedly connected to the inner side of the sleeve disc opening 202, a positioning pin 201 is fixedly connected to the outer side of the front face of the shank spline sleeve disc 2 away from the sleeve disc opening 202, a shank holding sleeve 4 is movably connected to the front face of the shank spline sleeve disc 2 through the sleeve disc opening 202, one end of the shank holding sleeve 4 is fixedly connected with a shank holding sleeve disc 5, a holding sleeve opening 7 is provided on the front face of the shank holding sleeve disc 5, and a positioning opening 401 is provided at the other end of the shank holding sleeve 4.

[0023] In the present embodiment, specifically, a spline sleeve groove 3 is provided on the outer side of the front side of the shank spline sleeve 2, and six spline sleeve grooves 3 are arranged equidistantly. The spline sleeve grooves 3 ensure that the rotating mechanism is stable during operation and prevent sliding and movement.

[0024] In the present embodiment, specifically, a holding sleeve groove 6 and a holding sleeve groove 8 are respectively provided on the outer side of the drill tail holding sleeve 5, and a plurality of holding sleeve grooves 8 are provided, and the plurality of holding sleeve grooves 8 are of the same size, and the holding sleeve groove 6 and the holding sleeve groove 8 are used to facilitate the staff to install and disassemble the drill tail holding sleeve 5.

[0025] In the present embodiment, specifically, the diameter of the locating pin 201 is matched with the inner diameter of the locating opening 401, and three locating pins 201 and three locating openings 401 are provided. The three locating pins 201 and the locating openings 401 are movably connected. By respectively providing the locating pins 201 and the locating openings 401 on the shank spline sleeve 2 and the shank holding sleeve 4, the shank spline sleeve 2 and the shank holding sleeve 4 can play a fixing role.

[0026] In this embodiment, specifically, eight spline bars 203 are provided, and the eight spline bars 203 are equidistantly arranged on the inner side of the sleeve opening 202 , so that the shank spline sleeve 1 and the rotating shaft can be better connected through the spline bars 203 .

[0027] In the present embodiment, specifically, the shank spline sleeve 1 and the shank spline sleeve 2 are an integrated structure, the outer surfaces of the shank spline sleeve 1 and the shank spline sleeve 2 are smooth, and they are processed in an integrated structure, which is more durable and convenient to produce.

[0028] Working principle: After the utility model is installed, first check the installation, fixation and safety protection of the utility model. The internal rotating mechanism of the rock drill is provided with a locating pin 201 and a locating port 401 on the drill tail spline sleeve 2 and the drill tail holding sleeve 4 respectively. When the spline sleeve needs to be docked with the holding sleeve, the locating pin 201 on the drill tail spline sleeve 2 is aligned with the locating port 401 on the drill tail holding sleeve 4, and then the locating pin 201 is inserted into the locating port 401, so that the drill tail spline sleeve 2 and the drill tail holding sleeve 4 can play a fixing role, thus completing the use process of the utility model. The utility model has a simple structure and is safe and convenient to use.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A novel internal rotating mechanism of a rock drill, comprising a shank spline sleeve (1), characterized in that: One end of the shank spline sleeve (1) is fixedly connected to a shank spline sleeve (2); a sleeve opening (202) is provided in the middle of the front of the shank spline sleeve (2); a spline strip (203) is fixedly connected to the inner side of the sleeve opening (202); a positioning pin (201) is fixedly connected to the outer side of the front of the shank spline sleeve (2) away from the sleeve opening (202); the front of the shank spline sleeve (2) is movably connected to a shank holding sleeve (4) through the sleeve opening (202); one end of the shank holding sleeve (4) is fixedly connected to a shank holding sleeve (5); a holding sleeve opening (7) is provided on the front of the shank holding sleeve (5); and a positioning opening (401) is provided at the other end of the shank holding sleeve (4).

2. A novel internal rotating mechanism for a rock drill according to claim 1, characterized in that: A spline sleeve groove (3) is provided on the outer side of the front side of the shank spline sleeve (2), and six spline sleeve grooves (3) are provided. The six spline sleeve grooves (3) are arranged at equal intervals.

3. A novel internal rotating mechanism for a rock drill according to claim 1, characterized in that: The outer side of the drill tail holding sleeve (5) is respectively provided with a holding sleeve groove (6) and a holding sleeve groove (8), and a plurality of the holding sleeve grooves (8) are provided, and the plurality of holding sleeve grooves (8) are of the same size.

4. A novel internal rotating mechanism for a rock drill according to claim 1, characterized in that: The diameter of the positioning pin (201) is matched to the inner diameter of the positioning opening (401), and three positioning pins (201) and three positioning openings (401) are provided, and the three positioning pins (201) and the positioning openings (401) are movably connected.

5. A novel internal rotating mechanism for a rock drill according to claim 1, characterized in that: There are eight spline bars (203), and the eight spline bars (203) are arranged at equal intervals on the inner side of the sleeve opening (202).

6. A novel internal rotating mechanism for a rock drill according to claim 1, characterized in that: The shank spline sleeve (1) and the shank spline sleeve disc (2) are of an integrated structure, and the outer surfaces of the shank spline sleeve (1) and the shank spline sleeve disc (2) are smooth.

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