A quick-change diamond drill bit with rapid chip removal function

Abstract

The invention relates to the technical field of diamond drill bits, and specifically discloses a quick-change diamond drill bit with a rapid chip removal function, comprising an upper mounting head, an intermediate discharge head plugged into the lower end of the upper mounting head, a cutting mounting head screwed to the lower end of the intermediate discharge head, and a light cutter head fixedly mounted at the lower end of the cutting mounting head; a roller mounting guide groove with a spiral structure is provided in a guide sleeve, and a discharge roller is installed in the roller mounting guide groove, when the intermediate discharge head rotates as a whole, the discharge roller in the roller mounting guide groove is squeezed and rotated relative to a rock column formed inside, so that the rock column is spirally pushed outward along an axis in the middle of the guide sleeve, thereby improving the discharge efficiency of drilling and falling materials; when the rock layer is relatively soft, the light cutter head is used for rapid cutting operation, and when the rock layer is relatively hard, the light cutter head is removed and the cutting mounting head is used for rapid cutting operation, thereby improving the adaptability of the entire drill bit.

Description

Technical Field

[0001] The invention relates to the technical field of diamond drill bits, in particular to a quick-change diamond drill bit with a rapid chip removal function. Background Art

[0002] A diamond drill bit is a drill bit used as a cutting edge. The diamond drill bit in the prior art is an integrated structure and has high strength, high wear resistance and impact resistance. Therefore, it is widely used in geological drilling operations. It has the advantages of feed block, long life, stable operation, etc. during use, which can meet general use requirements. However, it still has the following shortcomings in actual use:

[0003] 1. The diamond drill bit in the prior art adopts an integral structure. After drilling a hole on the rock wall, the hard stone column formed in the middle of the soft head is inconvenient to transport, resulting in low transportation efficiency and affecting the drilling process;

[0004] 2. The diamond drill bits in the prior art are generally of an integral structure, so that their cutting teeth generally have only a single structure. When processing different soft and hard rock formations, the drill bit cutting tooth type cannot be replaced in time, resulting in reduced adaptability. Summary of the invention

[0005] The object of the present invention is to provide a quick-change diamond drill bit with a rapid chip removal function to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a quick-change diamond drill bit with a rapid chip removal function, comprising an upper mounting head, an intermediate discharge head plugged into the lower end of the upper mounting head, a cutting mounting head screwed onto the lower end of the intermediate discharge head, and a light cutter head fixedly mounted at the lower end of the cutting mounting head, the upper mounting head comprising a mounting handle and a fixing sleeve fixedly connected to the lower end of the mounting handle, the intermediate discharge head comprising a connecting handle, a guide sleeve fixedly connected to the lower end of the connecting handle, and a lower connecting sleeve fixedly connected to the lower end of the guide sleeve.

[0007] Preferably, the outer circle of the mounting handle is provided with a connecting thread, the inner side of the fixing sleeve is provided with a guide groove I, and the connecting handle is plugged into the guide groove I.

[0008] Preferably, the left and right sides of the outer circle of the guide groove I are symmetrically provided with limit steps I which are parallel to each other, the left and right sides of the outer circle of the connecting handle are symmetrically provided with limit steps II which fit closely with the limit steps I, and a locking bolt I is threaded on the outside of the fixing sleeve and on the outside of the limit step I.

[0009] Preferably, a roller installation guide groove of a groove structure is formed in a spiral line in the circumferential direction on the inner side of the guide sleeve, and drainage rollers are evenly installed in the roller installation guide groove.

[0010] Preferably, a roller loading and unloading groove is provided on one end of the roller installation guide groove toward the outer side surface of the guide sleeve, and a sealing plate groove is provided at the notch of the roller loading and unloading groove.

[0011] Preferably, a blocking plate is inserted into the roller loading and unloading groove, and a sealing plate is fixedly connected to the outer side of the blocking plate. The sealing plate is buckled with the sealing plate groove, and a locking bolt II is screwed on the outer side of the sealing plate.

[0012] Preferably, guide grooves II are symmetrically provided on the left and right sides of the inner hole of the lower connecting sleeve, and a spiral locking groove with a spiral groove structure is opened around the central axis of the lower connecting sleeve by the guide groove II.

[0013] Preferably, the cutting and mounting head comprises a mounting sleeve, and locking blocks are symmetrically provided on the left and right sides of the outer circle of the upper end of the mounting sleeve, the locking blocks are slidably matched with the guide groove II, and the locking blocks are rotationally matched with the spiral locking groove.

[0014] Preferably, a cutting head is fixedly connected to the lower end of the mounting sleeve, and cutting teeth are evenly distributed in an annular direction at the lower end of the cutting head.

[0015] Preferably, the light cutter head includes a cutter seat plate, and a cutting edge is obliquely provided at the lower end of the cutter seat plate, and the upper end of the cutter seat plate is fixedly connected to the lower end of the cutting tooth by a locking bolt II.

[0016] Compared with the prior art, the invention has the following advantages:

[0017] 1. In the present invention, a roller installation guide groove with a spiral structure is provided in the guide sleeve, and a discharge roller is installed in the roller installation guide groove. When the middle discharge head rotates as a whole, the discharge roller in the roller installation guide groove is squeezed and rotated relative to the rock column formed inside, so that the rock column is pushed outward along the axis in the middle of the guide sleeve, thereby improving the discharge efficiency of the drilling material.

[0018] 2. In the present invention, the light cutter head is fixedly connected to the lower end of the cutting installation head, so that the cutting installation head as a whole has two cutting modes, soft and hard. When the rock formation is soft, the light cutter head is used for fast cutting operations. When the rock formation is hard, the light cutter head is removed and the cutting installation head is used for fast cutting operations, thereby improving the adaptability of the entire drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an axonometric view I of the overall structure of the present invention;

[0020] Figure 2 It is the axial side view II of the overall structure of the present invention;

[0021] Figure 3 It is the front view of the overall structure of the present invention;

[0022] Figure 4 for Figure 3 Axial view of the cross-section structure at AA in the middle;

[0023] Figure 5 for Figure 3 Axial view of the cross-section structure at the middle CC;

[0024] Figure 6 for Figure 3 Axial view of the cross-section structure at EE;

[0025] Figure 7 for Figure 3 Axial view of the cross-section structure at FF in the middle;

[0026] Figure 8 It is a left view of the overall structure of the present invention;

[0027] Fig. 9 for Figure 8 Axial view of the cross-sectional structure at center BB.

[0028] In the figure: 1. upper mounting head; 2. middle drainage head; 3. cutting mounting head; 4. light cutter head; 101. mounting handle; 102. fixing sleeve; 103. guide groove I; 104. limiting step I; 105. locking bolt I; 201. connecting handle; 202. limiting step II; 203. guide sleeve; 204. roller mounting guide groove; 205. drainage roller; 206. roller loading and unloading groove; 207. sealing plate groove; 208. blocking plate; 209. sealing plate; 210. locking bolt II; 211. lower connecting sleeve; 212. guide groove II; 213. spiral locking groove; 301. mounting sleeve; 302. locking block; 303. cutting cutter head; 304. cutting teeth; 401. knife base plate; 402. cutting blade; 403. locking bolt II. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figures 1 to 9The present invention provides a technical solution: a quick-change diamond drill bit with a rapid chip removal function, comprising an upper mounting head 1, an intermediate drainage head 2 plugged into the lower end of the upper mounting head 1, a cutting mounting head 3 screwed to the lower end of the intermediate drainage head 2, and a light cutter head 4 fixedly mounted at the lower end of the cutting mounting head 3, the upper mounting head 1 comprising a mounting handle 101 and a fixing sleeve 102 fixedly connected to the lower end of the mounting handle 101, the intermediate drainage head 2 comprising a connecting handle 201, a guide sleeve 203 fixedly connected to the lower end of the connecting handle 201, and a lower connecting sleeve 211 fixedly connected to the lower end of the guide sleeve 203, wherein the upper mounting head 1 is connected to a rotating mounting seat of the diamond drill bit, the intermediate drainage head 2 plays a role of intermediate connection and rapid drainage, the cutting mounting head 3 plays a role of bottom support and cutting, and the light cutter head 4 plays a role of auxiliary cutting.

[0031] Furthermore, the outer circle of the mounting handle 101 is provided with a connecting thread, and the inner side of the fixing sleeve 102 is provided with a guide groove I103, and the connecting handle 201 is plugged into the guide groove I103. During installation, the mounting handle 101 is connected to the rotating mounting seat of the diamond drill bit, and the connecting handle 201 and the guide groove I103 can be quickly plugged in, so that the upper mounting head 1 and the middle drainage head 2 can be quickly connected.

[0032] Furthermore, the left and right sides of the outer circle of the guide groove I 103 are symmetrically provided with mutually parallel limiting steps I 104, and the left and right sides of the outer circle of the connecting handle 201 are symmetrically provided with limiting steps II 202 that fit and plug with the limiting steps I 104, and a locking bolt I 105 is screwed on the outer side of the fixing sleeve 102 and on the outer side of the limiting step I 104. Here, the main function of the limiting step I 104 and the limiting step II 202 is to play a radial limiting role, and the locking bolt I105 fixes the fixing sleeve 102 and the connecting handle 201 together.

[0033] Furthermore, a roller mounting guide groove 204 with a groove structure is opened in a spiral direction on the inner side of the guide sleeve 203, and discharge rollers 205 are evenly installed in the roller mounting guide groove 204. This spirally guided groove structure enables the discharge roller 205 to have a spiral pushing effect relative to the middle of the guide sleeve 203 when rotating, thereby being able to push the material in the middle of the guide sleeve 203 upward, thereby improving the discharge efficiency of the entire drill bit.

[0034] Furthermore, a roller loading and unloading groove 206 is opened on the outer side of the guide sleeve 203 at one end of the roller installation guide groove 204, and a sealing plate groove 207 is opened at the groove of the roller loading and unloading groove 206. The main function of the roller loading and unloading groove 206 here is to facilitate the installation of the discharge roller 205 in the roller installation guide groove 204.

[0035] Furthermore, a blocking plate 208 is inserted into the roller loading and unloading groove 206, and a sealing plate 209 is fixedly connected to the outer side of the blocking plate 208. The sealing plate 209 is engaged with the sealing plate groove 207, and a locking bolt II 210 is screwed on the outer side of the sealing plate 209. Here, the blocking plate 208 has a limiting and protective function relative to the discharge roller 205 at the end of the roller mounting guide groove 204, and the sealing plate 209 plays an installation and fixing role relative to the blocking plate 208. The sealing plate 209 and the sealing plate groove 207 are fixedly connected together by the locking bolt II 210.

[0036] Furthermore, guide grooves II 212 are symmetrically provided on the left and right sides of the inner hole of the lower connecting sleeve 211, and a spiral locking groove 213 with a spiral groove structure is opened around the central axis of the lower connecting sleeve 211 by the guide grooves II 212. Here, the guide grooves II 212 play a lifting and lowering guiding role relative to the mounting sleeve 301, and the spiral locking grooves 213 play a rotational locking role relative to the locking block 302.

[0037] Furthermore, the cutting and mounting head 3 includes a mounting sleeve 301, and locking blocks 302 are symmetrically provided on the left and right sides of the outer circle of the upper end of the mounting sleeve 301. The locking blocks 302 are slidably matched with the guide groove II 212, and the locking blocks 302 are rotationally matched with the spiral locking groove 213. This spiral locking structure enables the cutting and mounting head 3 to be quickly installed and fixed at the lower end of the middle discharge head 2, thereby improving the installation efficiency of the cutting and mounting head 3 at the lower end of the middle discharge head 2.

[0038] Furthermore, a cutting head 303 is fixedly connected to the lower end of the mounting sleeve 301, and cutting teeth 304 are evenly distributed circumferentially at the lower end of the cutting head 303. The main function of the cutting teeth 304 is to cut the hard rock surface.

[0039] Furthermore, the light cutter head 4 includes a cutter base plate 401, and a cutting blade 402 is obliquely provided at the lower end of the cutter base plate 401, and the upper end of the cutter base plate 401 is fixedly connected to the lower end of the cutting tooth 304 by a locking bolt II 403, wherein the inclined structure of the cutting blade 402 has a better cutting effect on soft rock formations, thereby improving its cutting efficiency.

[0040] During operation, when the working interface of the drill bit is a relatively hard rock formation, the locking bolt II 403 is taken out, the light cutter head 4 is removed from the lower end of the cutting tooth 304, and the cutting tooth 304 is used as a cutting edge for drilling and cutting. When the working interface of the drill bit is a soft rock formation, the cutter seat plate 401 fits the lower end of the cutting tooth 304, the locking bolt II 403 is tightened, the light cutter head 4 is firmly installed at the lower end of the cutting tooth 304, and the cutting edge 402 is used as a cutting edge for drilling and cutting.

[0041] During operation, the columnar stone cut by drilling is squeezed and pushed by the discharge roller 205 in the middle of the guide sleeve 203, so that the stone is pushed upward along the main axis of the guide sleeve 203, thereby improving the discharge efficiency of the entire drill bit.

[0042] 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.

Claims

1. A quick-change diamond drill bit with rapid chip removal function, characterized in that: It comprises an upper mounting head (1), an intermediate drainage head (2) plugged into the lower end of the upper mounting head (1), a cutting mounting head (3) screwed to the lower end of the intermediate drainage head (2), and a light cutting head (4) fixedly mounted on the lower end of the cutting mounting head (3); the upper mounting head (1) comprises a mounting handle (101) and a fixing sleeve (102) fixedly connected to the lower end of the mounting handle (101); the intermediate drainage head (2) comprises a connecting handle (201), a guide sleeve (203) fixedly connected to the lower end of the connecting handle (201), and a lower connecting sleeve (211) fixedly connected to the lower end of the guide sleeve (203); The inner side of the guide sleeve (203) is provided with a roller installation guide groove (204) having a groove structure in a spiral line in an annular direction, and discharge rollers (205) are evenly installed in the roller installation guide groove (204); A roller installation groove (206) is provided at one end of the roller installation guide groove (204) toward the outer side surface of the guide sleeve (203), and a sealing plate groove (207) is provided at the notch of the roller installation groove (206); A blocking plate (208) is inserted into the roller loading and unloading groove (206), and a sealing plate (209) is fixedly connected to the outside of the blocking plate (208); the sealing plate (209) is engaged with the sealing plate groove (207), and a locking bolt II (210) is screwed to the outside of the sealing plate (209); The cutting and mounting head (3) comprises a mounting sleeve (301), and locking blocks (302) are symmetrically provided on the left and right sides of the outer circle of the upper end of the mounting sleeve (301), the locking blocks (302) are slidably matched with the guide groove II (212), and the locking blocks (302) are rotationally matched with the spiral locking groove (213); The lower end of the mounting sleeve (301) is fixedly connected to a cutting head (303), and cutting teeth (304) are evenly distributed in a circumferential direction at the lower end of the cutting head (303); The light cutter head (4) comprises a cutter seat plate (401), and a cutting blade (402) is obliquely provided at the lower end of the cutter seat plate (401), and the upper end of the cutter seat plate (401) and the lower end of the cutting tooth (304) are fixedly connected via a locking bolt III (403).

2. The quick-change diamond drill bit with rapid chip removal function according to claim 1, characterized in that: The outer circle of the installation handle (101) is provided with a connecting thread, the inner side of the fixing sleeve (102) is provided with a guide groove I (103), and the connecting handle (201) is plugged into the guide groove I (103).

3. The quick-change diamond drill bit with rapid chip removal function according to claim 2, characterized in that: The left and right sides of the outer circle of the guide groove I (103) are symmetrically provided with mutually parallel limiting steps I (104), the left and right sides of the outer circle of the connecting handle (201) are symmetrically provided with limiting steps II (202) that fit and plug with the limiting steps I (104), and a locking bolt I (105) is screwed on the outer side of the fixing sleeve (102) and on the outer side of the limiting step I (104).

4. The quick-change diamond drill bit with rapid chip removal function according to claim 1, characterized in that: Guide grooves II (212) are symmetrically provided on the left and right sides of the inner hole of the lower connecting sleeve (211), and a spiral locking groove (213) with a spiral groove structure is opened around the central axis of the lower connecting sleeve (211) by the guide groove II (212).

Images