Quick-release machine head for rock drill

Abstract

The invention relates to the technical field of rock drills, and provides a quick-release machine head for a rock drill, which comprises a machine body, a gear box cover, a machine head, a bit shank, a sealing ring, a flushing water port and a dismounting assembly, the machine body is fixedly connected with the gear box cover, the bit shank is fixedly connected in the machine head, the sealing ring is attached between the gear box cover and the machine head, and the flushing water port is fixedly connected with the machine head. A mounting hole is formed in the surface of the machine head, the dismounting and mounting assembly comprises a fixing part and a limiting dismounting and mounting part, two first limiting ribs are arranged on the inner wall of a fixing pipe in the fixing part, the fixing pipe is fixedly connected into the mounting hole, a rotary knob and an inserting block in the limiting dismounting and mounting part are fixedly connected with a rotating rod, and two second limiting ribs are arranged on the surface of the rotating rod. The rotating rod is movably arranged in the fixing pipe in a sleeved mode, the second limiting rib is attached to the first limiting rib, the center hole, the inserting hole and the limiting cavity are formed in the surface of the gearbox cover, and the center hole is communicated with the limiting cavity.

Description

Technical Field

[0001] The invention relates to the technical field of rock drills, and in particular to a quick-detachable head for a rock drill. Background Art

[0002] The quick-release head of the rock drill is a convenient tool accessory, which is widely used in mining, tunneling and construction. Its main feature is the ability to quickly replace different types of chisel heads to adapt to different work needs and improve work efficiency.

[0003] Advantages of quick-release heads: (1) Efficient and convenient: The chisel head can be replaced in seconds using a quick-release head, which reduces downtime and improves work efficiency. (2) Strong compatibility: Different types of chisel heads can be quickly replaced to adapt to various rocks and construction conditions. (2) Safety: The quick-release design usually takes safety into consideration to avoid accidents during the replacement process. (3) Durability: High-quality quick-release heads are usually made of wear-resistant materials and can withstand high-intensity working environments.

[0004] Common types of quick-release chisel heads: (1) Conical chisel head: used to break softer rocks. (2) Flat chisel head: suitable for leveling surfaces or grooving. (3) Pointed chisel head: suitable for excavation and drilling, and can enter harder rock formations.

[0005] The existing quick-release head of the rock drill is generally fixedly connected to the gear box cover by bolts. When the head needs to be disassembled, tools are needed to tighten the bolts one by one, which is cumbersome and inconvenient. In addition, the removed bolts need to be sorted and stored separately, otherwise they are easy to lose. Summary of the invention

[0006] The object of the present invention is to provide a quick-release head for a rock drill, aiming to solve the problems existing when using the quick-release head of an existing rock drill.

[0007] To achieve the above object, the present invention provides the following technical solution: a quick-detachable head for a rock drill, comprising a body, a gear box cover, a head, a shank, a sealing ring and a flushing water outlet, wherein the body is fixedly connected to the gear box cover, the shank is fixedly connected in the head, the sealing ring is fitted between the gear box cover and the head, the flushing water outlet is fixedly connected to the head, and a mounting hole is provided on the surface of the head, and further comprising:

[0008] A disassembly assembly fixedly connected between the gear box cover and the machine head, the disassembly assembly comprising a fixing portion and a limiting disassembly portion, the fixing portion comprising a fixing tube and a first limiting rib, the inner wall of the fixing tube is provided with two first limiting ribs, and the fixing tube is fixedly connected in the mounting hole;

[0009] The limiting disassembly and assembly part comprises a rotating rod, a knob, a plug-in block and a second limiting rib, wherein the knob and the plug-in block are fixedly connected to the rotating rod, two second limiting ribs are arranged on the surface of the rotating rod, the rotating rod is movably sleeved in the fixed tube, and the second limiting ribs are fitted with the first limiting ribs;

[0010] A center hole, a plug hole and a limit cavity are arranged on the surface of the gear box cover, and the center hole is communicated with the limit cavity.

[0011] As a further solution of the present invention, the three plug holes are symmetrical about the center of the center hole, and the angle between the two surfaces closest to the two first limiting ribs and the two surfaces closest to the two second limiting ribs is 160 degrees.

[0012] As a further solution of the present invention, when the three plug-in blocks pass through the three plug-in holes and enter the bottom of the limit cavity, the knob is used to control the rotating rod and the two second limit ribs to rotate 160 degrees, and the three plug-in blocks are distributed between the three plug-in holes, and the three plug-in blocks are in contact with the top surface of the bottom of the limit cavity.

[0013] As a further solution of the present invention, the fixing part also includes a first cavity, a retaining ring and a second cavity. The retaining ring is fixedly connected to the inner wall of the fixed tube. The retaining ring is used to divide the fixed tube into a first cavity and a second cavity. The first limiting rib is located on the inner wall of the second cavity. The distance between the second limiting rib and the retaining ring is not less than the depth of the plug-in hole.

[0014] As a further solution of the present invention, the fixing part also includes a coil spring, which is embedded in the first cavity and movably sleeved in the rotating rod. The coil spring is used to drive the second limiting rib to fit with the first limiting rib, and to drive the three plug-in blocks to be distributed between the three plug-in holes.

[0015] As a further solution of the present invention, the fixing part also includes a first limiting ring and a second limiting ring, the first limiting ring and the second limiting ring are both fixedly connected to the fixing tube, the first limiting ring and the second limiting ring are both in contact with the surface of the machine head, and the side of the second limiting ring facing away from the machine head is in contact with the surface of the gear box cover.

[0016] As a further solution of the present invention, the fixing part also includes a reset spring, which is connected between the knob and the first limiting ring. The elastic force direction of the reset spring is in the direction away from the plug-in hole. When the plug-in block is rotated by the knob to align with the plug-in hole, the elastic force of the reset spring drives the plug-in block into the plug-in hole.

[0017] The beneficial effects of the present invention are as follows: during installation, after controlling a plurality of rotating rods and plug-in blocks to be inserted into the center hole and the plug-in holes respectively by turning and pressing the knob, the machine head is pushed toward the gear box cover, and the plug-in block is pressed into the limit cavity from the plug-in hole. After being free from the restriction of the plug-in hole, the elastic force of the coil spring drives the position of the plug-in block to be offset from the position of the plug-in hole, thereby playing a role in tightening and limiting. During disassembly, after controlling the plug-in block to move along the plug-in hole to a position in contact with the second limit ring by turning and pulling the knob, the machine head is moved in a direction away from the gear box cover, driving all the plug-in blocks to disengage from the plug-in holes. During the entire disassembly and assembly process, compared with the traditional bolt connection method, fixing and disassembly can be completed without the use of operating tools, and it has the characteristics of simple operation and quick disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of a rock drill according to an embodiment of the present invention.

[0019] Figure 2 1 is an exploded view of a rock drill according to an embodiment of the present invention.

[0020] Figure 3 The figure is an assembly diagram of a die head, a shank tail, a sealing ring and a flushing nozzle according to an embodiment of the present invention.

[0021] Figure 4 It is an exploded view of the disassembled components of the embodiment of the present invention.

[0022] Figure 5 It is a cross-sectional view of the fixing portion of an embodiment of the present invention.

[0023] Figure 6 It is a planar cross-sectional view of the fixing portion of an embodiment of the present invention.

[0024] Figure 7 It is a planar cross-sectional view of the limiting disassembly portion of an embodiment of the present invention.

[0025] Figure 8 It is a first planar cross-sectional view of the disassembly and assembly components according to an embodiment of the present invention.

[0026] Fig. 9 It is a second planar cross-sectional view of the disassembly and assembly components according to an embodiment of the present invention.

[0027] Fig.10 It is a first installation schematic diagram of the limiting disassembly and assembly part and the gear box cover of an embodiment of the invention.

[0028] Fig.11 This is a second installation schematic diagram of the limiting disassembly and assembly portion and the gear box cover according to the present invention.

[0029] Fig.12 This is a third installation schematic diagram of the limiting disassembly and assembly portion and the gear box cover according to the present invention.

[0030] Fig.13 This is a schematic diagram of the disassembly of the limiting disassembly and assembly portion and the gear box cover according to the present invention.

[0031] Figure markings: 1-machine body, 2-gear box cover, 21-center hole, 22-plug hole, 23-limiting cavity, 3-machine head, 31-mounting hole, 4-shank, 5-disassembly and assembly component, 51-fixing part, 511-fixing tube, 512-first limiting rib, 513-first cavity, 514-first limiting ring, 515-second limiting ring, 516-reset spring, 517-coil spring, 518-blocking ring, 519-second cavity, 52-limiting and disassembly part, 521-rotating rod, 522-knob, 523-plug block, 524-second limiting rib, 6-sealing ring, 7-flushing water outlet. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0034] See also Figures 1 to 12 In one embodiment of the present invention, a quick-detachable head for a rock drill comprises a body 1, a gear box cover 2, a head 3, a drill tail 4, a sealing ring 6 and a flushing water outlet 7, wherein the body 1 is fixedly connected to the gear box cover 2, the drill tail 4 is fixedly connected in the head 3, the sealing ring 6 is fitted between the gear box cover 2 and the head 3, the flushing water outlet 7 is fixedly connected to the head 3, and a mounting hole 31 is provided on the surface of the head 3, characterized in that it also comprises:

[0035] A disassembly assembly 5 fixedly connected between the gear box cover 2 and the machine head 3, the disassembly assembly 5 comprising a fixing portion 51 and a limiting disassembly portion 52, the fixing portion 51 comprising a fixing tube 511 and a first limiting rib 512, the inner wall of the fixing tube 511 is provided with two first limiting ribs 512, and the fixing tube 511 is fixedly connected in the mounting hole 31;

[0036] The limiting disassembly and assembly part 52 includes a rotating rod 521, a knob 522, a plug-in block 523 and a second limiting rib 524. The knob 522 and the plug-in block 523 are fixedly connected to the rotating rod 521. Two second limiting ribs 524 are arranged on the surface of the rotating rod 521. The rotating rod 521 is movably sleeved in the fixed tube 511. The second limiting rib 524 is in contact with the first limiting rib 51.

[0037] A center hole 21 , a plug hole 22 and a limit cavity 23 are arranged on the surface of the gear box cover 2 , and the center hole 21 is communicated with the limit cavity 23 .

[0038] See also Figure 5 and Figure 6 Furthermore, the fixing portion 51 also includes a first cavity 513, a retaining ring 518 and a second cavity 519. The retaining ring 518 is fixedly connected to the inner wall of the fixing tube 511. The retaining ring 518 is used to divide the fixing tube 511 into the first cavity 513 and the second cavity 519. The first limiting rib 512 is located on the inner wall of the second cavity 519. The distance between the second limiting rib 524 and the retaining ring 518 is not less than the depth of the plug-in hole 22.

[0039] See also Figure 1 , Figures 5 to 9 Furthermore, the fixing part 51 also includes a first limiting ring 514 and a second limiting ring 515, the first limiting ring 514 and the second limiting ring 515 are both fixedly connected to the fixing tube 511, the first limiting ring 514 and the second limiting ring 515 are both in contact with the surface of the machine head 3, and the second limiting ring 515 is in contact with the surface of the gear box cover 2 on the side away from the machine head 3.

[0040] In the embodiment of the present invention, the three plug-in holes 22 are symmetrical about the center of the center hole 21, and the angle between the two surfaces closest to the two first limiting ribs 51 and the two surfaces closest to the two second limiting ribs 524 is 160 degrees. When the three plug-in blocks 523 pass through the three plug-in holes 22 and enter the bottom of the limiting cavity 23, the knob 522 is used to control the rotating rod 521 and the two second limiting ribs 524 to rotate 160 degrees. The three plug-in blocks 523 are distributed between the three plug-in holes 22, and the three plug-in blocks 523 are in contact with the top surface of the bottom of the limiting cavity 23. The knob 522 is rotated to overcome the elastic force of the coil spring 517 and rotate the rotating rod 521 160 degrees. At this time, one side of the first limiting rib 512 is in contact with the second limiting rib 524, and the plug-in block 523 is aligned with the plug-in hole 22.

[0041] See also Figure 4 and Fig.13 In one embodiment of the present invention, the fixing portion 51 further includes a coil spring 517, which is embedded in the first cavity 513. The coil spring 517 is movably sleeved in the rotating rod 521. The coil spring 517 is used to drive the second limiting rib 524 to fit with the first limiting rib 51, and to drive the three plug-in blocks 523 to be distributed between the three plug-in holes 22.

[0042] In the embodiment of the present invention, when the plug-in block 523 is pressed into the limiting cavity 23 from the plug-in hole 22, since it is free from the restriction of the plug-in hole 22, the elastic force of the coil spring 517 drives the rotating rod 521 to rotate 160 degrees in the opposite direction, so that the position of the plug-in block 523 is offset from the position of the plug-in hole 22, preventing the plug-in block 523 from being separated from the plug-in hole 22, thereby playing the role of tightening and limiting.

[0043] See also Fig.13 In one embodiment of the present invention, the fixing portion 51 further includes a reset spring 516, and the reset spring 516 is connected between the knob 522 and the first limiting ring 514. The elastic force direction of the reset spring 516 is away from the plug-in hole 22. When the plug-in block 523 is rotated to align with the plug-in hole 22 by using the knob 522, the elastic force of the reset spring 516 drives the plug-in block 523 into the plug-in hole 22.

[0044] In the embodiment of the present invention, when the plug-in block 523 is located on the inner wall of the plug-in hole 22, the elastic force of the coil spring 517 drives the plug-in block 523 to squeeze the inner wall of the plug-in hole 22, and the friction force between the plug-in block 523 and the plug-in hole 22 is greater than the elastic force of the return spring 516. Therefore, the elastic force of the return spring 516 will not drive the plug-in block 523 to disengage from the plug-in hole 22.

[0045] Working principle: when it is necessary to install and fix the machine head 3 and the gear box cover 2, first insert the shank 4 inside the machine head 3 into the gear box cover 2, and then rotate the knob 522 to overcome the elastic force of the coil spring 517 to rotate the rotating rod 521 160 degrees. At this time, one side of the first limiting rib 512 is in contact with the second limiting rib 524, and then the knob 522 is pressed to overcome the elastic force of the return spring 516, so that the rotating rod 521 and the plug-in block 523 are respectively inserted into the center hole 21 and the plug-in hole 22. At this time, the elastic force of the coil spring 517 drives the plug-in block 523 to squeeze the inner wall of the plug-in hole 22, and the friction between the plug-in block 523 and the plug-in hole 22 is greater than the elastic force of the return spring 516. Therefore, the elastic force of the return spring 516 will not drive the plug-in block 523 to detach from the plug-in hole 22, and the remaining disassembly and assembly components 5 are operated according to the above method;

[0046] Finally, the machine head 3 is pushed toward the gear box cover 2. At this time, the plug-in block 523 is pressed into the limiting cavity 23 from the plug-in hole 22. At this time, the second limiting ring 515 and the sealing ring 6 are squeezed between the machine head 3 and the gear box cover 2, playing a role of sealing and waterproofing. Since it is out of the restriction of the plug-in hole 22, the elastic force of the coil spring 517 drives the rotating rod 521 to rotate 160 degrees in the opposite direction, so that the position of the plug-in block 523 is staggered with the position of the plug-in hole 22, preventing the plug-in block 523 from being detached from the plug-in hole 22, thereby playing a role of tightening and limiting.

[0047] When it is necessary to disassemble the machine head 3 and the gear box cover 2, first use the knob 522 to control the rotating rod 521 and the plug-in block 523 to rotate 160 degrees, so that the plug-in block 523 is aligned with the plug-in hole 22, and then pull the knob 522 to control the rotating rod 521 and the plug-in block 523 to move along the plug-in hole 22, so that the plug-in block 523 is fitted with the second limit ring 515, and the remaining disassembly and assembly components 5 are operated according to the above method. Finally, the machine head 3 is moved in the direction away from the gear box cover 2 until all the plug-in blocks 523 are disengaged from the plug-in hole 22. After disengaging from the plug-in hole 22, the plug-in block 523 is automatically reset under the elastic force of the coil spring 517. During the entire disassembly and assembly process, compared with the traditional bolt connection method, no operating tools are required to complete the fixing and disassembly, and it has the characteristics of simple operation and quick disassembly and assembly.

[0048] To summarize, during installation, after controlling several rotating rods 521 and plug-in blocks 523 to be inserted into the center hole 21 and the plug-in hole 22 respectively by turning and pressing the knob 522, the machine head 3 is pushed toward the gear box cover 2, and the plug-in block 523 is pressed into the limit cavity 23 from the plug-in hole 22. After being free from the restriction of the plug-in hole 22, the elastic force of the coil spring 517 drives the position of the plug-in block 523 to be offset from the position of the plug-in hole 22, thereby playing a role in tightening and limiting. During disassembly, after controlling the plug-in block 523 to move along the plug-in hole 22 to a position that fits with the second limit ring 515 by turning and pulling the knob 522, the machine head 3 is moved in a direction away from the gear box cover 2, driving all the plug-in blocks 523 to disengage from the plug-in hole 22. During the entire disassembly and assembly process, compared with the traditional bolt connection method, no operating tools are required to complete the fixing and disassembly, and it has the characteristics of simple operation and quick disassembly and assembly.

[0049] For those skilled in the art, although several embodiments and examples of the present invention have been described, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the main purpose of the invention.

[0050] 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 quick-release head for a rock drill, comprising a body (1), a gear box cover (2), a head (3), a drill tail (4), a sealing ring (6) and a flushing water outlet (7), wherein the body (1) is fixedly connected to the gear box cover (2), the drill tail (4) is fixedly connected in the head (3), the sealing ring (6) is fitted between the gear box cover (2) and the head (3), the flushing water outlet (7) is fixedly connected to the head (3), and a mounting hole (31) is provided on the surface of the head (3), characterized in that: Also includes: A disassembly assembly (5) fixedly connected between the gear box cover (2) and the machine head (3), the disassembly assembly (5) comprising a fixing portion (51) and a limiting disassembly assembly portion (52), the fixing portion (51) comprising a fixing tube (511) and a first limiting rib (512), the inner wall of the fixing tube (511) being provided with two first limiting ribs (512), and the fixing tube (511) being fixedly connected in the mounting hole (31); The limiting disassembly and assembly part (52) comprises a rotating rod (521), a knob (522), a plug-in block (523) and a second limiting rib (524); the knob (522) and the plug-in block (523) are both fixedly connected to the rotating rod (521); two second limiting ribs (524) are arranged on the surface of the rotating rod (521); the rotating rod (521) is movably sleeved in the fixed tube (511); and the second limiting rib (524) is in contact with the first limiting rib (51); A center hole (21), a plug hole (22) and a limit cavity (23) are arranged on the surface of the gear box cover (2), and the center hole (21) is communicated with the limit cavity (23).

2. A quick-release head for a rock drill according to claim 1, characterized in that: The three plug holes (22) are symmetrical about the center of the central hole (21), and the angle between the two surfaces closest to the two first limiting ribs (51) and the two surfaces closest to the two second limiting ribs (524) is 160 degrees.

3. A quick-release head for a rock drill according to claim 2, characterized in that: When the three plug-in blocks (523) penetrate the three plug-in holes (22) and enter the bottom of the limiting cavity (23), the knob (522) is used to control the rotating rod (521) and the two second limiting ribs (524) to rotate 160 degrees, and the three plug-in blocks (523) are distributed between the three plug-in holes (22), and the three plug-in blocks (523) are in contact with the top surface of the bottom of the limiting cavity (23).

4. A quick-release head for a rock drill according to claim 3, characterized in that: The fixing portion (51) further comprises a first cavity (513), a retaining ring (518) and a second cavity (519); the retaining ring (518) is fixedly connected to the inner wall of the fixing tube (511); the retaining ring (518) is used to divide the fixing tube (511) into the first cavity (513) and the second cavity (519); the first limiting rib (512) is located on the inner wall of the second cavity (519); and the distance between the second limiting rib (524) and the retaining ring (518) is not less than the depth of the plug hole (22).

5. A quick-release head for a rock drill according to claim 4, characterized in that: The fixing portion (51) further comprises a coil spring (517), wherein the coil spring (517) is embedded in the first cavity (513), and the coil spring (517) is movably sleeved in the rotating rod (521). The coil spring (517) is used to drive the second limiting rib (524) to fit with the first limiting rib (51), and is used to drive the three plug-in blocks (523) to be distributed between the three plug-in holes (22).

6. A quick-release head for a rock drill according to claim 1, characterized in that: The fixing portion (51) further comprises a first limiting ring (514) and a second limiting ring (515), wherein the first limiting ring (514) and the second limiting ring (515) are both fixedly connected to the fixing tube (511), and the first limiting ring (514) and the second limiting ring (515) are both in contact with the surface of the machine head (3), and the side of the second limiting ring (515) facing away from the machine head (3) is in contact with the surface of the gear box cover (2).

7. A quick-release head for a rock drill according to claim 1, characterized in that: The fixing portion (51) further comprises a return spring (516), wherein the return spring (516) is connected between the knob (522) and the first limiting ring (514), and the elastic force direction of the return spring (516) is in a direction away from the plug-in hole (22). When the plug-in block (523) is rotated by the knob (522) to align with the plug-in hole (22), the elastic force of the return spring (516) drives the plug-in block (523) into the plug-in hole (22).

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