Mining rock drill with drill bit convenient to replace

Abstract

The utility model discloses a mining rock drill with a drill bit convenient to replace. The mining rock drill comprises a rock drill body, a working shaft, a connecting cylinder and a drill bit body. The working shaft is arranged at the bottom end of the rock drill body, the containing mechanism and the fixing mechanism are arranged at the bottom end of the working shaft and can be matched with each other to be connected with the drill bit body, the connecting cylinder is connected to the outer side of the connecting position, the connecting position can be covered through the connecting cylinder, the connecting stability can be enhanced, the connecting position can be protected, and the rock drill bit can be protected. According to the drill bit, impurities are prevented from being clamped into the drill bit, meanwhile, the drill bit has certain attractiveness, the drill bit body can be automatically popped out when the drill bit body is replaced, quick disassembly of the drill bit body is facilitated, the working efficiency is optimized, and the drill bit has high practicability.

Description

Technical Field

[0001] The utility model relates to the field of rock drills, in particular to a rock drill for mining which is convenient for replacing a drill bit. Background Art

[0002] A rock drill is a tool used to directly mine stone. It drills holes in the rock strata to place explosives to blast the rock, thereby completing the mining of stone or other stone projects. In addition, the rock drill can also be converted into 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] Since the drill bits are mostly in direct contact with hard stones and work on them, they may be damaged over a long period of time, affecting normal operation, and the drill bits need to be replaced. However, the drill bits of most rock drills have relatively fixed connections, and the installation and disassembly are relatively cumbersome, which makes it inconvenient to quickly replace the drill bits, which may affect the normal operation of the rock drill and has certain limitations. Utility Model Content

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a mining rock drill which is convenient for replacing the drill bit.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a mining rock drill that is convenient for replacing a drill bit, comprising a rock drill body, and also comprising a working shaft arranged at the bottom end of the rock drill body, wherein the outer bottom end of the working shaft is provided with a connecting tube, the inner bottom end of the connecting tube is provided with an expansion slot, and the bottom end of the working shaft is connected to the drill bit body;

[0006] A storage mechanism is provided at the inner bottom end of the working shaft, and a fixing mechanism is connected to the bottom end of the storage mechanism.

[0007] Preferably, the storage mechanism includes a storage groove, a spring, a movable plate, a through groove and a limit piece. A storage groove is provided at the bottom end of the working shaft, the top end of the drill bit body can extend into the storage groove, and a group of movable plates are connected to the top end of the storage groove through a spring, the bottom surface of the movable plate can contact the top surface of the drill bit body, and a group of through grooves are provided at the left and right middle ends of the storage groove, and a group of limit pieces are provided in the through grooves.

[0008] Preferably, the fixing mechanism includes a clamping arc plate, a connecting block, a screw and a supporting block, a group of clamping arc plates are hinged on the left and right sides of the bottom surface of the working shaft, a group of connecting blocks are provided at the front and rear ends of the opposite faces of the two groups of clamping arc plates, and the left and right groups of connecting blocks are connected by a group of screws, and two groups of supporting blocks are provided on the outer sides of the two groups of clamping arc plates.

[0009] Preferably, the two groups of clamping arc plates can clamp the outer top end of the drill bit body after being attached.

[0010] Preferably, the outer side of the support block can contact the inner side of the expansion slot.

[0011] Preferably, the outer top end of the working shaft is provided with an external thread, and the inner top end of the connecting tube is provided with an internal thread corresponding thereto.

[0012] Preferably, the limiting member is "L"-shaped, and after being turned over, the cross bar can contact the drill bit body, and the vertical bar extends to the outside of the working shaft.

[0013] Preferably, the outer side of the limiting member can contact the inner side of the expansion slot.

[0014] Beneficial effects of the utility model:

[0015] The utility model has a working shaft arranged at the bottom end of the rock drill body, and a storage mechanism and a fixing mechanism are arranged at the bottom end of the working shaft, which can be connected with the drill bit body by cooperation with each other, and a connecting tube is connected to the outer side of the connection, and the connecting position can be covered by the connecting tube, which can not only enhance the connection stability, but also protect the connection position to avoid impurities being stuck therein, and at the same time has a certain aesthetics, and can realize automatic ejection of the drill bit body when replacing the drill bit body, which is conducive to the rapid disassembly of the drill bit body, optimizes the working efficiency, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the internal structure of the connecting tube of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the storage tank of the utility model;

[0019] Figure 4 It is a schematic diagram of the bottom surface of the fixing mechanism of the utility model when viewed from above.

[0020] Among them: rock drill body-1, working shaft-2, connecting tube-3, drill bit body-4, storage mechanism-21, fixing mechanism-22, storage groove-211, spring-212, moving plate-213, through groove-214, limiter-215, clamping arc plate-221, connecting block-222, screw-223, support block-224, expansion groove-31. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0022] See also Figure 1-2The utility model provides a mining rock drill that is easy to replace a drill bit, including a rock drill body 1, and also includes a working shaft 2 arranged at the bottom end of the rock drill body 1, a connecting tube 3 is provided at the outer bottom end of the working shaft 2, and an expansion groove 31 is provided at the inner bottom end of the connecting tube 3, wherein the outer top end of the working shaft 2 is provided with an external thread, and the inner top end of the connecting tube 3 is provided with an external thread corresponding thereto, and the connecting tube 3 can move up and down on the outer side of the working shaft 2 through the internal and external threads. Furthermore, the outer top end of the connecting tube 3 is provided with anti-skid patterns, which can increase friction and avoid slipping, and the bottom end of the working shaft 2 is connected with a drill bit body 4.

[0023] See also Figure 2-3 The utility model provides a mining rock drill that is convenient for replacing a drill bit. A storage mechanism 21 is provided at the bottom end of the working shaft 2, and a fixing mechanism 22 is connected to the bottom end of the storage mechanism 21.

[0024] The storage mechanism 21 includes a storage groove 211, a spring 212, a movable plate 213, a through groove 214 and a stopper 215. The inner bottom end of the working shaft 2 is provided with a storage groove 211, and the top end of the drill bit body 4 can extend into the storage groove 211. The top end of the storage groove 211 is connected to a group of movable plates 213 through the spring 212. The bottom surface of the movable plate 213 can contact the top surface of the drill bit body 4. The drill bit body 4 can press the spring 212 upward through the movable plate 213. A group of through grooves 214 are opened at the left and right middle ends of the storage groove 211, and a group of limit members 215 are provided in the through grooves 214. The limit members 215 are "L"-shaped. After they are flipped over, the cross bar can contact the drill bit body 4 to preliminarily fix the drill bit body 4. The vertical bar extends to the outside of the working shaft 2 to facilitate force application, and the outside of the limit members 215 can contact the inside of the expansion groove 31. After the connecting tube 3 moves downward, the limit members 215 can be limited and fixed through the expansion groove 31.

[0025] See also Figure 2-4 The utility model provides a mining rock drill that is convenient for replacing a drill bit. The fixing mechanism 22 includes a clamping arc plate 221, a connecting block 222, a screw 223 and a supporting block 224. A group of clamping arc plates 221 are hinged on the left and right sides of the bottom surface of the working shaft 2. After the two groups of clamping arc plates 221 are fitted together, the outer top of the drill bit body 4 can be clamped to fix the drill bit body 4. A group of connecting blocks 222 are provided at the front and rear ends of the opposite faces of the two groups of clamping arc plates 221, and the left and right groups of connecting blocks 222 are connected by a group of screws 223, which can improve the clamping stability. Two groups of supporting blocks 224 are provided on the outer sides of the two groups of clamping arc plates 221. The outer sides of the supporting blocks 224 can contact the inner sides of the expansion slots 31. After the connecting tube 3 moves downward, the supporting blocks 224 and the two groups of clamping arc plates 221 can be strengthened and supported through the expansion slots 31.

[0026] Here’s how it works:

[0027] The utility model is placed in a suitable position for use. When replacing the drill bit, the connecting tube 3 can be rotated to drive the connecting tube 3 to move upward until the two sets of limit members 215 are exposed. At this time, the connection between the two sets of clamping arc plates 221 can be released by rotating the screw rod 223, and then force is applied to the bottom ends of the two sets of limit members 215 to flip them upward. The cross bars of the two sets of limit members 215 are separated from the outer side of the drill bit body 4. At this time, the spring 212 releases the elastic force to drive the moving plate 213 to move, and the drill bit body 4 is ejected from the storage groove 211;

[0028] Then, another set of drill bit body 4 is replaced, and its top end is inserted into the storage groove 211, and the spring 212 is squeezed upward by the movable plate 213. At this time, the two sets of limit members 215 are rotated again so that the cross bars of the two sets of limit members 215 are in contact with the drill bit body 4 again for preliminary fixation. Then, the two sets of clamping arc plates 221 are attached to the outer side of the drill bit body 4, and the connecting block 222 is connected by the screw 223 for secondary fixation. Finally, the connecting tube 3 can be rotated to move downward, and the limit member 215 and the support block 224 are successively received in the expansion groove 31 for limit fixation to improve stability.

[0029] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rock drill for mining that is convenient for replacing a drill bit, comprising a rock drill body (1); Features: It also includes a working shaft (2) arranged at the bottom end of the rock drill body (1), the outer bottom end of the working shaft (2) is provided with a connecting tube (3), the inner bottom end of the connecting tube (3) is provided with an expansion groove (31), and the bottom end of the working shaft (2) is connected to a drill head body (4); A storage mechanism (21) is provided at the inner bottom end of the working shaft (2), and a fixing mechanism (22) is connected to the bottom end of the storage mechanism (21).

2. A mining rock drill that is easy to replace the drill bit according to claim 1, characterized in that: The storage mechanism (21) comprises a storage groove (211), a spring (212), a movable plate (213), a through groove (214) and a stopper (215); the inner bottom end of the working shaft (2) is provided with a storage groove (211); the top end of the drill bit body (4) can extend into the storage groove (211); the inner top end of the storage groove (211) is connected to a group of movable plates (213) through the spring (212); the bottom surface of the movable plate (213) can contact the top surface of the drill bit body (4); the left and right middle ends of the storage groove (211) are both provided with a group of through grooves (214); and the through grooves (214) are both provided with a group of stoppers (215).

3. A mining rock drill with easy replacement of drill bits according to claim 1, characterized in that: The fixing mechanism (22) comprises a clamping arc plate (221), a connecting block (222), a screw rod (223) and a supporting block (224); a group of clamping arc plates (221) are hingedly connected to the left and right sides of the bottom surface of the working shaft (2); a group of connecting blocks (222) are provided at the front and rear ends of the two groups of clamping arc plates (221), and the left and right groups of connecting blocks (222) are connected by a group of screw rods (223); and two groups of supporting blocks (224) are provided on the outer sides of the two groups of clamping arc plates (221).

4. A mining rock drill with easy replacement of drill bits according to claim 3, characterized in that: The two groups of clamping arc plates (221) can clamp the outer top end of the drill bit body (4) after being attached to each other.

5. A mining rock drill with easy drill bit replacement according to claim 3, characterized in that: The outer side of the support block (224) can contact the inner side of the expansion slot (31).

6. A mining rock drill with easy drill bit replacement according to claim 1, characterized in that: The outer top end of the working shaft (2) is provided with an external thread, and the inner top end of the connecting tube (3) is provided with an internal thread corresponding thereto.

7. A mining rock drill that facilitates the replacement of drill bits according to claim 2, characterized in that: The stopper (215) is in an "L" shape. After turning over, the cross bar can contact the drill bit body (4), and the vertical bar extends to the outside of the working shaft (2).

8. A mining rock drill with easy drill bit replacement according to claim 7, characterized in that: The outer side of the limiting member (215) can contact the inner side of the expansion slot (31).

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