A detachable cutting tool assembly with dust suppression function

Abstract

The present invention provides a detachable cutting tool assembly with a dust reduction function, which belongs to the technical field of accessories for cutting devices of coal mining machinery, and includes a conical pick, a conical tooth seat, a dust reduction connection seat and a fixed block; the conical pick includes a shank, a tooth shoulder, a tooth rod and a conical part; the shank and the tooth rod are both cylindrical structures; the tooth shoulder is a truncated cone structure, the bottom surface is connected to the shank, and the top surface is connected to the tooth rod through an annular transition surface; the conical part is located on the tooth rod, and a hard alloy is brazed on the top, and a plurality of oval anti-bending beams are evenly arranged on the circumferential surface; a mounting hole is arranged on the conical tooth seat, and a quick-insert tenon is arranged at the bottom; the dust reduction connection seat is provided with an insertion slot, a water distribution interface is arranged on the bottom surface, a dust reduction nozzle is arranged at the rear, and a built-in water channel is arranged inside; the fixed block is used to close the insertion port of the insertion slot. The above-mentioned detachable cutting tool assembly with a dust reduction function can increase the anti-bending ability of the pick, and at the same time realize the detachable connection between the tooth seat and the cutting head or cutting drum.

Description

Technical Field

[0001] The invention belongs to the technical field of cutting device accessories of coal mining machinery, and specifically discloses a detachable cutting tool assembly with a dust reduction function. Background Art

[0002] The pick is installed in the mounting hole of the cutting head tooth seat and can rotate freely around its axis in the mounting hole. During the operation of the tunnel boring machine, the pick is in direct contact with the coal body and the rock body. As time goes by, the circumferential surface of the tapered part of the pick tooth rod is evenly worn until the wear causes the length of the tooth rod to be shortened to the point where it cannot be used. Then a new pick needs to be replaced. Some existing picks extend the service life of the pick by reducing the angle of the tapered part and coating it with wear-resistant materials. However, this method actually makes the pick into a combination structure of two materials, which greatly weakens the bending resistance of the pick tooth rod and affects the actual service life of the pick. Due to the complex geological conditions of coal mines, under some conditions where the hardness and abrasiveness of coal and rock are high and have a certain degree of abrasiveness, when the contact force between the pick shank and the mounting hole of the tooth seat increases and exceeds the critical friction between the two, the rotational freedom of the pick in the mounting hole is restricted, and the pick cannot rotate during the contact with the coal body and the rock body. A certain area of ​​the pick tooth rod in the circumferential direction will always be in contact with the coal body or rock body, and the metal material in this area will be sharply worn, resulting in eccentric wear of the pick. The strength of the pick that has been worn eccentrically will be further weakened, causing the pick to bend and fail as a whole. In addition, in order to reduce the resistance of the pick to cutting into the coal or rock, the front end taper of the pick rod is usually smaller, making it easier for the pick to cut into the coal or rock. However, the smaller taper of the rod will deteriorate the wrapping performance of the cemented carbide installed on the top of the pick. After a certain amount of wear occurs to the metal material in the circumferential direction of the pick rod, the cemented carbide is very easy to fall off, resulting in the pick being unable to effectively break the rock. Therefore, under the premise of ensuring that the geometric dimensions of the pick remain unchanged during installation and use, improving the self-sharpening property of the pick, increasing the pick's bending resistance and having a certain degree of wear resistance can effectively extend the service life of the pick.

[0003] The tooth seat is usually welded to the outer surface of the cutting head or cutting drum, and the cutting teeth are inserted into the mounting holes of the tooth seat. In the process of rock excavation after coal mining, there is usually obvious wear of the cutting teeth and the tooth seat. When wear occurs on the cutting teeth, the cutting teeth can be removed from the mounting holes of the tooth seat and replaced with new ones. However, when the tooth seat is worn, it is impossible to replace the tooth seat because the tooth seat is welded to the cutting head or cutting drum body. At this time, the cutting head or cutting drum has to be lifted to the well for maintenance. In order to avoid the damage of the tooth seat causing the cutting head or cutting drum to fail to work properly, a device is needed that can be reliably connected to the surface of the cutting head or cutting drum and can be detachably connected to the tooth seat, so as to realize the disassembly and replacement of the tooth seat without welding in the coal mine. In addition, due to the periodic contact and separation between the pick and the coal rock, the impact phenomenon is very obvious, and is accompanied by the generation of a large amount of dust. This dust diffuses in the closed tunnel, which will increase the dust concentration in the tunnel, reduce visibility, and affect the continuity of work and the health of workers. Therefore, it is very necessary to carry out dust reduction treatment. Summary of the invention

[0004] The object of the present invention is to provide a detachable cutting tool assembly with a dust reduction function, increase the bending resistance of the cutting teeth, realize the detachable connection between the tooth seat and the cutting head or the cutting drum, and at the same time have a dust reduction function.

[0005] To achieve the above-mentioned object, the present invention provides a detachable cutting tool assembly with dust reduction function, comprising a conical pick, a conical tooth seat, a dust reduction connecting seat and a fixing block; the conical pick comprises an integrally formed tooth shank, a tooth shoulder, a tooth rod and a conical portion; the tooth shank and the tooth rod are both cylindrical structures; the tooth shoulder is a truncated cone structure, the bottom surface of which is connected to the tooth shank, and the top surface is connected to the tooth rod through an annular transition surface; the conical portion is located on the tooth rod, the top of which is brazed with cemented carbide, and a plurality of oval anti-bending beams are evenly arranged on the circumferential surface; the oval anti-bending beams are arranged in the form of small upper and large lower portions, and the oval contour curve of the oval anti-bending beams is controlled by parameter equation (1).

[0006]

[0007] Where c is a number greater than 2;

[0008] The bevel gear seat is provided with a mounting hole that matches the tooth shank, and a quick-insert tenon is provided at the lower part; the dust reduction connecting seat is used to be welded on the cutting head or the cutting drum, and is provided with an insertion groove that matches the quick-insert tenon, and a water distribution interface connected to the water distribution hole of the cutting head or the cutting drum is provided on the bottom surface, a dust reduction nozzle is provided at the rear, and a built-in water channel connecting the water distribution interface and the dust reduction nozzle is provided inside; the fixing block is used to fix on the dust reduction connecting seat after the quick-insert tenon and the insertion groove are assembled, and close the insertion port of the insertion groove.

[0009] Furthermore, the area where the front of the bevel gear adapter contacts the chips is a separation surface with an obtuse angle.

[0010] Furthermore, the separation surface is inlaid with wear-resistant dividing blocks which form an acute angle with the horizontal direction; the wear-resistant dividing blocks are hard alloy.

[0011] Furthermore, the mounting hole of the bevel gear seat includes a first step hole, a second step hole and a third step hole, the radius of which decreases successively from front to back; a liner ring is interference fit in the first step hole and the second step hole, and the hardness of the liner ring is greater than the hardness of the conical pick; the shank of the conical pick is inserted in the liner ring, and the tooth shoulder rests on the liner ring.

[0012] Furthermore, the above-mentioned detachable cutting tool assembly with dust reduction function also includes a shaft retaining ring; the part of the shank extending from the mounting hole is provided with an annular groove that cooperates with the shaft retaining ring.

[0013] Furthermore, an annular concave shoulder is arranged on the bottom surface of the tooth shoulder; and a convex shoulder matching with the concave shoulder is arranged on the liner ring.

[0014] Furthermore, the boss is a double-conical annular structure, and the angle between the inner and outer conical surfaces and the horizontal plane is 120°.

[0015] Furthermore, the quick-insertion tenon is a T-shaped tenon, the distance between the side positioning surfaces on both sides gradually decreases from front to back, and the side positioning surface and the rear end surface are transitionally connected by a guiding inclined surface; the insertion slot cooperates with the quick-insertion tenon.

[0016] Furthermore, a fixed block installation position is provided on the dust reduction connecting seat; the fixed block installation position extends forward from the insertion port of the plug-in slot and is provided with a fixed slot; a stop key cooperating with the fixed slot is provided on the bottom surface of the fixed block; screw holes are provided on the fixing slot and the stop key, and the fixing screws pass through the screw holes to fix the fixed block on the fixed block installation position.

[0017] Furthermore, the side surface of the dust reduction connecting seat corresponding to the fixing block installation position is a friction reducing surface; both sides of the fixing block are friction reducing surfaces; and the distance between the friction reducing surfaces on both sides gradually increases from front to back.

[0018] The beneficial effects of the present invention are:

[0019] In the above-mentioned detachable cutting tool assembly with dust reduction function, the conical pick is integrally formed of the same material without joints, avoiding the separation of different materials under low-frequency and large impact loads, and improving the reliability of the use of the pick. The oval anti-bending beams are evenly distributed on the outer surface of the conical part, which can effectively resist bending loads from different directions, so as to increase the bending resistance of the conical pick, thereby improving the working capacity of the cutting head or cutting drum. The convex structure can effectively resist the wear of the conical part by coal and rock, and extend the service life of the conical pick. The shank of the conical pick is rotatably installed in the mounting hole of the conical tooth seat, rotates during the working process, and efficiently cuts into the coal body or rock. The quick-insertion tenon of the conical tooth seat cooperates with the insertion slot of the dust reduction connection seat to achieve rapid disassembly and assembly. The fixing block is used to fix on the dust reduction connection seat after the quick-insertion tenon and the insertion slot are assembled, and the insertion port of the insertion slot is closed to ensure the reliable connection between the conical tooth seat and the dust reduction connection seat, and prevent the conical tooth seat from falling off during the cutting process. The dust reduction connecting seat has a built-in water system, which can spray the water in the water storage chamber of the cutting head or cutting drum directly from the dust reduction nozzle at the rear of the dust reduction connecting seat without passing through the conical tooth seat, so as to achieve the purpose of dust suppression, and can also cool the adjacent conical picks arranged behind the conical pick, while reducing the impact on the spray system when the conical tooth seat is disassembled and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An assembly diagram of a detachable cutting tool assembly with dust suppression function provided by the present invention;

[0021] Figure 2 for Figure 1 An exploded view of a detachable cutting tool assembly with dust suppression function is shown;

[0022] Figure 3 for Figure 2 Another direction view of the exploded diagram shown;

[0023] Figure 4 for Figure 1 A schematic diagram of the structure of a conical pick in a detachable cutting tool;

[0024] Figure 5 for Figure 1 A schematic diagram of the structure of a bevel gear holder in a detachable cutting tool;

[0025] Figure 6 The figure is the assembly drawing of the conical pick and the conical gear adapter;

[0026] Figure 7 The assembly drawing of the dust suppression connection seat and the fixing block;

[0027] Figure 8 It is the assembly drawing of the bevel gear seat and the dust suppression connection seat;

[0028] Fig. 9 for Figure 8 The cross-sectional view in the AA direction of the assembly drawing shown;

[0029] Fig.10 for Figure 8 The sectional view in the BB direction of the assembly drawing is shown.

[0030] In the figure: 1-conical pick; 1.1-tooth handle; 1.2-tooth shoulder; 1.3-tooth rod; 1.4-conical part; 1.5-annular transition surface; 1.6-hard alloy; 1.7-ovate bending-resistant beam; 1.8-rotation-increasing groove; 1.9-annular clamping groove; 1.10-concave shoulder; 2-conical tooth seat; 2.1-mounting hole; 2.2-quick tenon; 2.3-separation surface; 2.4-wear-resistant dividing block; 2.5-side positioning surface; 2.6-guide slope; 3-dust reduction connection seat; 3.1-insertion slot; 3.2-water distribution interface; 3.3-dust reduction nozzle; 3.4-built-in water channel; 3.5-fixing slot; 3.6-welding slope; 4-fixing block; 4.1-stop key; 5-bushing ring; 5.1-boss shoulder; 6-shaft retaining ring; 7-fixing screw; 8-friction reducing surface; 100-cutting head or cutting drum. DETAILED DESCRIPTION

[0031] The present embodiment provides a detachable cutting tool assembly with dust reduction function, comprising a conical pick 1, a conical tooth seat 2, a dust reduction connecting seat 3 and a fixing block 4; the conical pick 1 comprises an integrally formed tooth shank 1.1, a tooth shoulder 1.2, a tooth rod 1.3 and a conical portion 1.4; the tooth shank 1.1 and the tooth rod 1.3 are both cylindrical structures; the tooth shoulder 1.2 is a truncated cone structure, the bottom surface of which is connected to the tooth shank 1.1, and the top surface is connected to the tooth rod 1.3 through an annular transition surface 1.5; the conical portion 1.4 is located on the tooth rod 1.3, the top of which is brazed with cemented carbide 1.6, and a plurality of oval anti-bending beams 1.7 are evenly arranged on the circumferential surface; the oval anti-bending beams 1.7 are arranged in the form of small upper and large lower, and the oval contour curve of the oval anti-bending beams 1.7 is controlled by parameter equation (1).

[0032]

[0033] Where c is a number greater than 2;

[0034] The bevel gear seat 2 is provided with a mounting hole 2.1 which cooperates with the tooth shank 1.1, and a quick-insert tenon 2.2 is provided at the lower part; the dust reduction connecting seat 3 is used for welding on the cutting head or the cutting drum 100, and is provided with an insertion groove 3.1 which cooperates with the quick-insert tenon 2.2, and a water distribution interface 3.2 which is connected to the water distribution hole of the cutting head or the cutting drum 100 is provided on the bottom surface, a dust reduction nozzle 3.3 is provided at the rear, and a built-in water channel 3.4 which is connected to the water distribution interface 3.2 and the dust reduction nozzle 3.3 is provided inside; the fixing block 4 is used to be fixed on the dust reduction connecting seat 3 after the quick-insert tenon 2.2 and the insertion groove 3.1 are assembled, and the insertion port of the insertion groove 3.1 is closed.

[0035] In the above-mentioned detachable cutting tool assembly with dust reduction function, the conical pick 1 is integrally formed of the same material without any connection seams, which avoids the separation of different materials under low-frequency and large impact loads and improves the reliability of the use of the pick. The oval anti-bending beams 1.7 are evenly distributed on the outer surface of the conical part 1.4, which can effectively resist bending loads from different directions, so as to increase the bending resistance of the conical pick 1, thereby improving the working capacity of the cutting head or cutting drum 100. The convex structure can effectively resist the wear of the conical part 1.4 by coal and rock, and extend the service life of the conical pick 1. The shank 1.1 of the conical pick 1 is rotatably installed in the mounting hole 2.1 of the conical tooth seat 2, rotates during operation, and efficiently cuts into the coal body or rock. The quick-insert tenon 2.2 of the conical tooth seat 2 cooperates with the insertion slot 3.1 of the dust reduction connection seat 3 to achieve rapid disassembly and assembly. The fixing block 4 is used to fix on the dust suppression connection seat 3 after the quick insertion tenon 2.2 is assembled with the insertion slot 3.1, close the insertion port of the insertion slot 3.1, ensure the reliable connection between the bevel gear holder 2 and the dust suppression connection seat 3, and prevent the bevel gear holder 2 from falling off during the cutting process. The dust suppression connection seat 3 has a built-in water system, which can spray the water in the water storage chamber of the cutting head or cutting drum 100 directly from the dust suppression nozzle 3.3 at the rear of the dust suppression connection seat 3 without passing through the bevel gear holder 2, so as to achieve the purpose of dust suppression, and can also cool the adjacent conical pick 1 arranged behind the conical pick 1 at the same time.

[0036] Furthermore, a plurality of rotation-increasing grooves 1.8 are provided on the tooth shoulder 1.2 and the annular transition surface 1.5 of the conical pick 1. When the conical pick 1 cuts into the coal body and rotates into the chip pile as the cutting head or cutting drum 100 rotates, the groove wall of the rotation-increasing groove 1.8 will make unilateral contact with the coal body or the chips under the rotation of the cutting head or cutting drum 100, and the torque generated during the contact will promote the rotation of the conical pick 1 around the pick axis. After the previous rotation-increasing groove 1.8 rotates out of the contact area, the next rotation-increasing groove 1.8 will continue to contact the coal body or the chips, so that the conical pick 1 forms a continuous rotation around the pick axis, thereby increasing the self-rotation performance of the conical pick 1. Since the conical pick 1 is an integral structure, the tooth rod 1.3 and the cemented carbide 1.6 brazed to the top of the conical part 1.4 will also rotate accordingly, thereby realizing the self-sharpening of the conical pick 1 during the cutting and chip loading process, thereby extending the service life of the pick. Arranging the rotation-increasing groove 1.8 on the tooth shoulder 1.2 and the annular transition curved surface 1.5 can effectively avoid the concave structure of the rotation-increasing groove 1.8 weakening the local material of the tooth rod 1.3 and does not reduce the overall strength of the conical pick 1.

[0037] Furthermore, the angle between the two side surfaces of the rotation-increasing groove 1.8 is 90-100°.

[0038] Furthermore, the area in front of the bevel gear seat 2 that contacts the chips is a separation surface 2.3 with an obtuse angle, which can effectively reduce the impact wear of abrasive materials such as chips on the gear seat when the cutting head rotates. The obtuse angle is mainly based on the angle corresponding to the wear state measured after the cutting teeth are worn in actual work, and is usually not less than 90° and between 120°-160°. Without reducing the overall strength of the bevel gear seat 2, the smaller the obtuse angle, the smaller the resistance, the more obvious the inhibitory effect on wear, and the better the use effect. The schematic angle in the figure is 150°.

[0039] Furthermore, the separation surface 2.3 is inlaid with a wear-resistant material dividing block 2.4 which is at an acute angle to the horizontal direction, so that the chips can be discharged smoothly along the moving direction of the conical tooth seat 2; the wear-resistant material dividing block 2.4 is hard alloy. According to the design standard for cutting coal and rock, the linear speed of the tooth tip (hard alloy 1.6 part) when the cutting head cuts rock, and the reasonable range of this angle is 20-30°. In the figure, the angle is about 22°.

[0040] Furthermore, the mounting hole 2.1 of the bevel gear holder 2 includes a first step hole, a second step hole and a third step hole whose radius decreases from front to back in sequence; the first step hole and the second step hole are interference-fitted with a liner ring 5, so that the two become an integral structure, which improves the reliability of the connection between the bevel gear holder 2 and the liner ring 5, and the hardness of the liner ring 5 is greater than the hardness of the conical pick 1; the shank 1.1 of the conical pick 1 is inserted in the liner ring 5, and the tooth shoulder 1.2 abuts against the liner ring 5. The liner ring 5 is made of high wear-resistant alloy steel after heat treatment. When the conical pick 1 rotates in the liner ring 5 and generates friction and wear, since the hardness of the liner ring 5 is higher than the hardness of the conical pick 1, the wear will mainly occur on the tooth shoulder 1.2 and the end face in contact with the liner ring 5. When the cemented carbide 1.6 at the top of the conical pick 1 or the end face in contact with the liner ring 5 fails due to wear, the conical pick 1, which is a vulnerable component, can be replaced.

[0041] Furthermore, the above-mentioned detachable cutting tool assembly with dust reduction function further includes a shaft retaining ring 6; the portion of the shank 1.1 extending from the mounting hole 2.1 is provided with an annular groove 1.9 that cooperates with the shaft retaining ring 6. The shank 1.1 of the conical pick 1 is inserted into the mounting hole 2.1, and the shaft retaining ring 6 is clamped in the annular groove 1.9 to fix the conical pick 1 in the conical tooth seat 2.

[0042] Furthermore, the bottom surface of the tooth shoulder 1.2 is provided with an annular concave shoulder 1.10; and the lining ring 5 is provided with a convex shoulder 5.1 that cooperates with the concave shoulder 1.10. The tooth shoulder 1.2 and the lining ring 5 are interlocked with each other through an annular conical surface, and the tooth shoulder 1.2 can rotate freely in the lining ring 5 without falling out of the lining ring 5. The tooth shoulder 1.2 and the lining ring 5 are in contact with each other through the annular conical surface, which effectively increases the contact area, reduces the contact specific pressure, and reduces wear. In addition, the convex shoulder-concave shoulder interlocking structure can also prevent the conical pick 1 from shaking in the mounting hole 2.1 due to assembly clearance or wear on the cylindrical surface of the shank 1.1, and can effectively stabilize the conical pick 1 during the cutting process.

[0043] Furthermore, the convex shoulder 5.1 is a double-conical annular structure, and the angle between the inner and outer conical surfaces and the horizontal plane is 120°, which can make the normal load acting on the conical pick 1 during the rock breaking process be evenly distributed on the inner and outer conical surfaces, thereby reducing the contact pressure ratio between the convex shoulder 5.1 and the concave shoulder 1.10. The equilateral triangle formed in the force decomposition process transfers the normal load acting on the conical pick 1 during the rock breaking process to the conical tooth seat 2 through the liner ring 5.

[0044] Furthermore, the quick-insertion tenon 2.2 is a T-shaped tenon, and the distance between the side positioning surfaces 2.5 on both sides gradually decreases from front to back, and the side positioning surface 2.5 and the rear end surface are transitionally connected through the guide slope 2.6; the insertion slot 3.1 cooperates with the quick-insertion tenon 2.2. The side positioning surface 2.5 and the guide slope 2.6 of the quick-insertion tenon 2.2 can be quickly inserted along the insertion slot 3.1 to achieve automatic positioning in the insertion direction. The angle between the side positioning surfaces 2.5 on both sides is the self-positioning angle.

[0045] Furthermore, a fixed block installation position is provided on the dust suppression connection seat 3; the fixed block installation position extends forward from the insertion port of the insertion slot 3.1 and is provided with a fixed slot 3.5; a stop key 4.1 is provided on the bottom surface of the fixed block 4 to cooperate with the fixed slot 3.5; screw holes are provided on the fixed slot 3.5 and the stop key 4.1, and a fixing screw 7 passes through the screw hole to fix the fixed block 4 on the fixed block installation position. The setting of the fixed slot 3.5 and the stop key 4.1 effectively prevents the fixed block 4 from falling out of the fixed block installation position.

[0046] Furthermore, the side surface on the dust reduction connecting seat 3 corresponding to the fixing block installation position is a wear-reducing surface 8; the two sides of the fixed block 4 are wear-reducing surfaces 8; the distance between the wear-reducing surfaces 8 on both sides gradually increases from front to back, forming a right angle in the movement direction of the dust reduction connecting seat 3, thereby reducing the rotational working resistance of the cutting head or cutting drum 100.

[0047] Furthermore, the bottom surface and the side surface of the dust reduction connection seat 3 are transitionally connected via an inwardly inclined welding slope 3.6, and the dust reduction connection seat 3 can be welded to the surface of the cutting head or the cutting drum 100 via the welding slope 3.6.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detachable cutting tool assembly with dust suppression function, characterized in that: It includes a conical pick, a conical tooth seat, a dust suppression connection seat and a fixing block; The conical pick comprises an integrally formed tooth shank, tooth shoulder, tooth rod and conical portion; The tooth handle and the tooth rod are both cylindrical structures; The tooth shoulder is a truncated cone structure, the bottom surface of which is connected to the tooth handle, and the top surface of which is connected to the tooth rod through an annular transition surface; The conical part is located on the gear rod, the top of which is brazed with hard alloy, and a plurality of oval anti-bending beams are evenly arranged on the circumferential surface; The oval bending-resistant beam is arranged in a form of being small at the top and large at the bottom. The oval contour curve of the oval bending-resistant beam is controlled by parameter equation (1). Where c is a number greater than 2; The bevel gear seat is provided with a mounting hole matched with the gear handle, and a quick-insertion tenon is provided at the lower part; The dust suppression connection seat is used to be welded on the cutting head or the cutting drum, and is provided with an insertion groove matched with the quick-insertion tenon, a water distribution interface connected to the water distribution hole of the cutting head or the cutting drum is provided on the bottom surface, a dust suppression nozzle is provided at the rear, and a built-in water channel connecting the water distribution interface and the dust suppression nozzle is provided inside; The fixing block is used to fix on the dust suppression connection seat after the quick insertion tenon and the insertion slot are assembled, and close the insertion opening of the insertion slot; The area in front of the bevel gear holder that contacts the chips is a separation surface with an obtuse angle; The quick-insertion tenon is a T-shaped tenon, the distance between the side positioning surfaces on both sides gradually decreases from front to back, and the side positioning surface and the rear end surface are transitionally connected by a guide slope; The insertion slot cooperates with the quick-insertion tenon.

2. The detachable cutting tool assembly with dust suppression function according to claim 1 is characterized in that: The separation surface is inlaid with wear-resistant material dividing blocks that form an acute angle with the horizontal direction; The wear-resistant dividing block is made of hard alloy.

3. The detachable cutting tool assembly with dust suppression function according to claim 1 or 2, characterized in that: The mounting hole of the bevel gear adapter includes a first step hole, a second step hole and a third step hole whose radius decreases from front to back; The first step hole and the second step hole are interference-fitted with liner rings, and the hardness of the liner rings is greater than the hardness of the conical pick; The tooth shank of the conical pick is inserted in the liner ring, and the tooth shoulder abuts against the liner ring.

4. The detachable cutting tool assembly with dust suppression function according to claim 3 is characterized in that: Also included is a shaft retaining ring; The portion of the tooth shank extending from the mounting hole is provided with an annular groove matched with a shaft retaining ring.

5. The detachable cutting tool assembly with dust suppression function according to claim 4 is characterized in that: The bottom surface of the tooth shoulder is provided with an annular concave shoulder; The lining ring is provided with a convex shoulder which matches with the concave shoulder.

6. The detachable cutting tool assembly with dust suppression function according to claim 5, characterized in that: The boss is a double-conical annular structure, and the angle between the inner and outer cones and the horizontal plane is 120°.

7. The detachable cutting tool assembly with dust suppression function according to claim 1, characterized in that: The dust reduction connection seat is provided with a fixing block installation position; The fixing block installation position extends forward from the insertion opening of the insertion slot and is provided with a fixing slot; The bottom surface of the fixing block is provided with a stop key that cooperates with the fixing groove; The fixing groove and the stop key are both provided with screw holes, and the fixing screws pass through the screw holes to fix the fixing block on the fixing block installation position.

8. The detachable cutting tool assembly with dust suppression function according to claim 7, characterized in that: The side surface of the dust reduction connection seat corresponding to the mounting position of the fixed block is a friction reducing surface; Both sides of the fixed block are wear-reducing surfaces; The distance between the wear-reducing surfaces on both sides gradually increases from front to back.

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