Impactor

Abstract

The impactor comprises a drill bit, the drill bit comprises a mounting part and an impacting part, a concave groove is formed in the outer surface of the mounting part, and the groove extends in the axis direction of the mounting part; the outer sleeve is coaxially arranged on the outer side of the mounting part of the drill bit in a sleeving manner and is directly connected with the mounting part in a sliding manner; and the material blocking part is arranged on the inner side of the outer sleeve, a sliding gap is formed between the material blocking part and the groove, and the sliding gap is smaller than the depth of the groove. Compared with the prior art, the impactor does not need to be provided with a drill rod clamping sleeve, the structure is simpler, and the drill bit can be prevented from falling into a hole.

Description

Technical Field

[0001] The present application relates to the technical field of drilling machinery and equipment, and more specifically, to an impactor. Background Art

[0002] With the development of industry, various infrastructure projects are constantly advancing. As drilling equipment, down-the-hole impactors are widely used in blasting projects in the construction of mines, hydropower stations, ports, roads, tunnels, etc., for drilling blasting holes, etc. Pneumatic down-the-hole impactors use high-pressure air as a power source to drive the piston in the impactor to reciprocate at high speed and high frequency, so that the piston obtains enough energy to impact the drill bit for drilling operations. The impact force acts on the drill bit in the form of stress waves, generating huge impact energy in a very short time, which can effectively break the rock and quickly form holes to achieve the purpose of rock drilling.

[0003] The impactor in the prior art includes an outer sleeve, a piston, a joint and a drill bit, wherein the joint and the drill bit are respectively arranged at both ends of the outer sleeve, and the piston is slidably mounted in the outer sleeve to separate the outer sleeve into two front and rear air chambers. Due to the air pressure difference between the front and rear air chambers, the piston is pushed to reciprocate in the outer sleeve to provide impact force for the drill bit.

[0004] At present, the outer sleeve of the impactor is often connected to the drill bit through a clamping sleeve. One end of the clamping sleeve is fixedly connected to the outer sleeve by a threaded connection, and the clamping sleeve and the drill bit are connected by a spline. When the down-the-hole impactor works in an unstable formation, such as a cave, an interlayer, or a loose soil layer, the clamping sleeve often becomes loose or even falls off, causing the drill bit to fall into the hole, affecting work efficiency.

[0005] Therefore, there is an urgent need for an impactor that does not require a drill sleeve and has a simpler structure and can prevent the drill bit from falling into the hole. Utility Model Content

[0006] In order to solve the above technical problems, the present application provides an impactor, which does not need to be provided with a drill sleeve, has a simpler structure, and can prevent the drill bit from falling into the hole.

[0007] The technical solutions provided by this application are as follows:

[0008] An impactor, comprising:

[0009] A drill bit, the drill bit comprising a mounting portion and an impact portion, the outer surface of the mounting portion is provided with an inwardly concave groove, and the groove extends along the axial direction of the mounting portion;

[0010] An outer sleeve coaxially sleeved on the outside of the mounting portion and directly slidably connected to the mounting portion;

[0011] A material stopper is arranged on the inner side of the outer sleeve, and a sliding gap is arranged between the material stopper and the outer surface of the groove, and the sliding gap is smaller than the groove depth of the groove.

[0012] Preferably, the mounting portion comprises a limiting section, a moving section and a guiding section which are connected in sequence, and the groove is arranged on the outer surface of the limiting section;

[0013] The outer sleeve is provided with a first section, a second section and a third section connected in sequence, wherein the inner diameters of the first section, the second section and the third section gradually increase, the material stopper is arranged on the inner wall of the first section, the second section is slidably connected to the moving section, and the third section cooperates with the guide section for guiding.

[0014] Preferably, there is a clearance fit between the second section and the moving section, and a mounting seat is further provided on the outer surface of the outer sleeve, and the mounting seat is used for fixed connection with the binding frame.

[0015] Preferably, it also includes:

[0016] Bumps, the bumps are arranged at intervals on the outer circumferential surface of the moving section, and spline grooves are formed between adjacent bumps;

[0017] A spline is arranged on the inner wall of the second section and is used to cooperate with the spline groove. The splines are arranged at intervals around the inner circumferential surface of the second section, and straight grooves used to cooperate with the protrusion are formed between adjacent splines.

[0018] Preferably, it also includes:

[0019] An open groove is arranged on the outer sleeve, the open groove is perpendicular to the axial direction of the outer sleeve, and the material blocking member is sleeved in the open groove;

[0020] A locking member for fixing the material blocking member to the outer sleeve.

[0021] Preferably, it also includes:

[0022] A stopper disposed at one end of the material stopper;

[0023] A locking hole is arranged on the material blocking member away from the blocking block, and the locking member is inserted into the locking hole for fixing.

[0024] Preferably, it also includes:

[0025] The avoidance grooves are arranged on the outer surface of the outer sleeve, and the avoidance grooves are arranged in pairs and are respectively arranged at the two ends of the open groove.

[0026] Preferably, the groove is specifically an annular groove, and two material stoppers are provided and are spaced apart circumferentially around the outer sleeve.

[0027] Preferably, the material blocking member comprises a plurality of rolling bodies, and the rolling bodies are slidably connected to the inner surface of the outer sleeve.

[0028] Preferably, it also includes:

[0029] A channel is provided in the outer sleeve and is used to accommodate the rolling body, and an opening is provided on the inner side of the channel;

[0030] An inlet and outlet are connected to the passage, and a distal end of the inlet and outlet extends to the outer surface of the outer sleeve;

[0031] A blocking member detachably connected to the distal end of the inlet and outlet.

[0032] The impactor provided by the utility model is firstly provided with a drill bit and an outer sleeve, wherein the drill bit includes a mounting portion and an impactor, the outer sleeve is coaxially sleeved on the outside of the mounting portion of the drill bit, and the outer sleeve is directly slidably connected to the mounting portion of the drill bit. In the prior art, a drill sleeve is also provided between the outer sleeve and the drill bit in the impactor, the drill sleeve and the outer sleeve are fixedly connected by threads, and the drill sleeve and the drill bit are connected by splines. During the operation of the impactor, the piston provides a pulse force for the drill bit to break the rock, and during the impact process, the power head drives the outer sleeve to rotate. In this working mode, it is easy to cause the connection between the drill sleeve and the outer sleeve to fail, and the drill sleeve becomes loose or even falls off, causing the drill bit to fall into the hole, affecting the work efficiency. The impactor in the embodiment of the utility model is not provided with a drill sleeve, and is directly slidably connected to the mounting portion of the drill bit through the outer sleeve, so that the drill sleeve will not become loose or fall off.

[0033] Secondly, in order to prevent the drill bit from falling into the hole when the impactor is lifting the drill, a material stopper is also provided. The material stopper is arranged on the inner side of the outer sleeve, and the outer surface of the mounting portion is provided with a groove. The groove is recessed from the outer circumferential surface of the mounting portion toward the direction of the central axis, and the groove extends along the axial direction of the mounting portion. There is a sliding gap between the material stopper and the outer surface of the groove, and the sliding gap is smaller than the depth of the groove. When the impactor is drilling, the outer surface of the groove is slidably connected to the material stopper, which is convenient for the drill bit to reciprocate along the axial direction for drilling. When the impactor is lifting the drill, the material stopper abuts against the end face of the groove to prevent the drill bit from falling off from the outer sleeve. It can be seen that compared with the prior art, the impactor in the embodiment of the utility model does not need to be provided with a drill sleeve, and the structure is simpler, which can prevent the drill bit from falling into the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the first structure of the impactor provided in the embodiment of the utility model;

[0036] Figure 2 for Figure 1 A schematic diagram of the structure of A1-A1;

[0037] Figure 3 for Figure 1 A schematic diagram of the structure of B1-B1;

[0038] Figure 4 A second structural schematic diagram of the impactor provided in the embodiment of the utility model;

[0039] Figure 5 for Figure 4 A schematic diagram of the structure of A2-A2;

[0040] Figure 6 for Figure 4 A schematic diagram of the structure of B2-B2;

[0041] Figure 7 A third structural schematic diagram of the impactor provided in the embodiment of the utility model;

[0042] Figure 8 for Figure 7 A schematic diagram of the structure of A3-A3;

[0043] Fig. 9 for Figure 7 A structural schematic diagram of B3-B3;

[0044] Fig.10 A schematic diagram of a structure in which an impactor provided in an embodiment of the utility model is installed on a binding frame;

[0045] Fig.11 for Fig.10 A structural schematic diagram of the right view.

[0046] Figure numerals: 1, drill bit; 2, outer sleeve; 3, material stopper; 4, mounting seat; 5, binding frame; 7, piston; 11, groove; 12, limiting section; 13, moving section; 14, guide section; 21, first section; 22, second section; 23, third section; 24, avoidance groove; 31, locking piece; 32, block; 61, opening groove; 62, channel; 63, blocking piece. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0049] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0051] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0052] The embodiments of the present invention are written in a progressive manner.

[0053] like Figures 1 to 11 As shown, an embodiment of the utility model provides an impactor, comprising: a drill bit 1, wherein the drill bit 1 comprises a mounting portion and an impact portion, wherein the outer surface of the mounting portion is provided with an inwardly concave groove 11, and the groove 11 extends along the axial direction of the mounting portion; an outer sleeve 2 coaxially sleeved on the outer side of the mounting portion of the drill bit 1 and directly slidably connected to the mounting portion; a material stopper 3 arranged on the inner side of the outer sleeve 2, wherein a sliding gap is provided between the material stopper 3 and the groove 11, and the sliding gap is smaller than the groove depth of the groove 11.

[0054] At present, the outer sleeve of the impactor is often connected to the drill bit through a clamping sleeve. One end of the clamping sleeve is fixedly connected to the outer sleeve by a threaded connection, and the clamping sleeve and the drill bit are connected by a spline. When the down-the-hole impactor works in an unstable formation, such as a cave, an interlayer, or a loose soil layer, the clamping sleeve often becomes loose or even falls off, causing the drill bit to fall into the hole, affecting work efficiency.

[0055] The impactor provided by the utility model is firstly provided with a drill bit 1 and an outer sleeve 2, wherein the drill bit 1 includes a mounting portion and an impactor, the outer sleeve 2 is coaxially sleeved on the outside of the mounting portion of the drill bit 1, and the outer sleeve 2 is directly slidably connected with the mounting portion of the drill bit 1. In the prior art, a drill sleeve is also provided between the outer sleeve and the drill bit in the impactor, the drill sleeve and the outer sleeve are fixedly connected by threads, and the drill sleeve and the drill bit 1 are connected by splines. During the operation of the impactor, the piston provides a pulse force for the drill bit 1 to enable the drill bit 1 to break the rock. During the impact process, the power head drives the outer sleeve to rotate. In this working mode, it is easy to cause the connection between the drill sleeve and the outer sleeve to fail, and the drill sleeve becomes loose or even falls off, causing the drill bit to fall into the hole, affecting the work efficiency. The impactor in the embodiment of the utility model is not provided with a drill sleeve, and is directly slidably connected with the mounting portion of the drill bit through the outer sleeve, so that the drill sleeve will not become loose or fall off.

[0056] Secondly, in order to prevent the drill bit 1 from falling into the hole when the impactor is lifting the drill, a stopper 3 is also provided. The stopper 3 is arranged on the inner side of the outer sleeve 2. The outer surface of the mounting portion is provided with a groove 11. The groove 11 is recessed from the outer circumferential surface of the mounting portion toward the direction of the central axis. The groove 11 extends along the axial direction of the mounting portion. There is a sliding gap between the stopper 3 and the outer surface of the groove 11, and the sliding gap is smaller than the depth of the groove 11. When the impactor is drilling, the outer surface of the groove 11 is slidably connected with the stopper 3, which facilitates the drill bit 1 to reciprocate along the axial direction for drilling. When the impactor is lifting the drill, the stopper 3 abuts against the end surface of the groove 11 to prevent the drill bit 1 from falling off from the outer sleeve 2. It can be seen that compared with the prior art, the impactor in the embodiment of the utility model does not need to be provided with a drill sleeve, the structure is simpler, and the drill bit 1 can be prevented from falling into the hole.

[0057] It should be noted that the outer sleeve 2 and the drill bit 1 in the prior art are connected via a drill sleeve, the drill sleeve and the outer sleeve 2 are connected via a thread, and the drill sleeve and the drill bit 1 are connected via a spline. However, the impactor provided in the embodiment of the utility model does not need to be provided with a drill sleeve, and the outer sleeve 2 is directly slidably connected to the mounting portion, the structure is simpler, and it is easier to install. In addition, the outer sleeve 2 and the drill bit 1 are specifically slidably connected. It should be emphasized that the outer sleeve 2 and the drill bit 1 in the present application can be connected via a spline, or the inner wall of the outer sleeve 2 is specifically an optical axis, the outer surface of the mounting portion of the drill bit 1 is specifically a light hole, and the outer sleeve 2 and the mounting portion are clearance fit.

[0058] In the above structure, the impact part in the embodiment of the utility model is used for drilling, and the mounting part is used to connect with the outer sleeve 2. In order to ensure the strength of the impact part, the outer diameter of the impact part in the embodiment of the utility model is larger than the outer diameter of the mounting part. The outer sleeve 2 is sleeved on the outside of the mounting part. When drilling, the front end face of the outer sleeve 2 contacts the rear end face of the impact part. When lifting the drill, the front end face of the outer sleeve 2 is separated from the rear end face of the impact part, and the drill bit 1 is limited by the material stopper 3 to prevent the drill bit 1 from falling out of the outer sleeve 2.

[0059] In the above structure, as one of the specific implementations, the mounting portion in the embodiment of the utility model includes a limiting section 12, a moving section 13 and a guide section 14 connected in sequence, and the guide section 14 is arranged at one end of the mounting portion close to the impact portion, and the groove 11 is arranged on the outer surface of the limiting section 12, and the outer sleeve 2 is provided with a first section 21, a second section 22 and a third section connected in sequence, wherein the inner diameters of the first section 21, the second section 22 and the third section gradually increase, and a material stopper 3 is provided on the inner wall of the first section 21, the second section 22 is used for sliding connection with the moving section 13, and the third section is used for cooperating with the guide section 14 for guiding, and the third section cooperates with the guide section 14 to prevent the drill bit 1 from being deviated during movement.

[0060] In the above structure, as one of the implementation modes, the impactor in the embodiment of the utility model is specifically a binding impactor, please refer to Figures 8 to 11 As shown, the second section 22 and the moving section 13 of the impactor in the embodiment of the utility model are specifically clearance-matched, and a mounting seat 4 is provided on the outer surface of the outer sleeve 2, and the mounting seat 4 is used to be fixedly connected to the binding frame 5.

[0061] Specifically, the bundled impactor includes a power head, a bundle frame 5 and an impact hammer, wherein the impact hammer is specifically the above-mentioned impactor, the impact hammer is fixedly connected to the bundle frame 5 through a mounting seat 4, at least one impact hammer is arranged at the bottom of a bundle frame 5, and the impact hammers are arranged at circumferential intervals around the bundle frame 5, and the power head is used to drive the bundle frame 5 to move in the axial direction. During the drilling process, since there is a clearance fit between the drill bit 1 and the outer sleeve 2, the drill bit 1 has a certain degree of rotational freedom when drilling, and under the pulse action of the piston 7, the drill bit 1 can reciprocate along the axial direction, and according to the different drilling geology, the drill bit 1 adaptively rotates and deflects in the outer sleeve 2 to avoid excessive wear of the impact part of the drill bit 1 and cause failure of the impact part.

[0062] In the above structure, the cross-sectional shape of the mounting seat 4 is specifically a polygonal structure. Preferably, the cross-sectional shape of the mounting seat 4 is specifically a hexagonal structure.

[0063] In the above structure, the impactor in the embodiment of the utility model can also be a down-the-hole impactor. Specifically, the outer sleeve 2 moves along the axial direction and rotates around the axial direction. When drilling, the drill bit 1 reciprocates along the axial direction of the outer sleeve 2 and rotates together with the outer sleeve 2. The drilling efficiency is high. In order to avoid the drill bit 1 from rotating in the outer sleeve 2, as one of the specific implementation methods, the impactor in the embodiment of the utility model also includes a bump and a spline, wherein the bumps are arranged at intervals on the outer circumferential surface of the moving section 13, and spline grooves are formed between adjacent bumps. A spline is arranged on the inner wall of the second section 22, and the spline is used to cooperate with the spline groove. A straight groove is formed between adjacent splines, and the straight groove is used to cooperate with the bump, so as to avoid relative rotation between the drill bit 1 and the outer sleeve 2, while the drill bit 1 can move along the axial direction of the outer sleeve 2.

[0064] In the upper structure, since a drill sleeve is not provided, compared with the impactor in the prior art, the outer sleeve 2 in the embodiment of the utility model is longer, and the material stopper 3 is used to limit the drill bit 1 when lifting the drill to prevent the drill bit 1 from falling into the hole. The drill bit 1 is used as an impact part and may be worn during drilling. In order to facilitate the replacement of the drill bit 1.

[0065] As a first specific implementation method, the impactor in the embodiment of the utility model also includes an opening groove 61 and a locking piece 31, wherein the opening groove 61 is arranged on the outer sleeve 2, and the opening groove 61 is arranged to penetrate in a direction perpendicular to the axis of the outer sleeve 2, the material blocking piece 3 is sleeved in the opening groove 61, and the material blocking piece 3 and the outer sleeve 2 are fixedly connected by the locking piece 31.

[0066] In the above structure, further, the impactor in the embodiment of the utility model also includes a block 32 and a locking hole, wherein the block 32 is arranged at one end of the material blocking member 3, the area of ​​the block 32 is larger than the area of ​​the opening groove 61, and the material blocking member 3 is limited by the contact between the end face of the block 32 and the opening groove 61, and a locking hole is arranged at the end of the material blocking member 3 away from the block 32, and the locking member 31 is inserted into the locking hole, and the material blocking member 3 is fixed by the block 32 and the locking hole.

[0067] In the above structure, as one of the implementation modes, the impactor in the embodiment of the utility model also includes an avoidance groove 24, which is arranged on the outer surface of the outer sleeve 2, and the avoidance grooves 24 are arranged in pairs and are respectively arranged at both ends of the opening groove 61. Since the avoidance grooves 24 are provided, the avoidance grooves 24 are used to accommodate the block 32 and the locking member 31, so as to avoid the block 32 and the locking member 31 being too large and affecting the drilling process.

[0068] Furthermore, as one of the implementation modes, the material blocking member 3 in the embodiment of the utility model is specifically a pin shaft, and the locking member 31 in the embodiment of the utility model is specifically a cotter pin, which makes disassembly and assembly more convenient.

[0069] Furthermore, the groove 11 in the embodiment of the utility model can be a single groove adapted to the material stopper 3 , and one or more single grooves can be provided, and the material stopper 3 and the groove 11 are provided in a one-to-one correspondence.

[0070] Furthermore, the groove 11 in the embodiment of the utility model is specifically an annular groove, and one or at least two material stoppers 3 may be provided. When at least two material stoppers 3 are provided, the material stoppers 3 are circumferentially spaced around the outer sleeve 2 .

[0071] In order to facilitate processing and ensure the strength of the outer sleeve 2 , as one of the preferred implementations, two material stoppers 3 in the embodiment of the utility model are preferably provided, and are respectively arranged on both sides of the outer sleeve 2 .

[0072] As a second specific implementation, the material blocking member 3 in the embodiment of the utility model includes a rolling body, which is slidably connected to the outer sleeve 2, at least three rolling bodies are provided, and the rolling bodies are slidably connected around the surface of the outer sleeve 2.

[0073] Furthermore, the impactor in the embodiment of the utility model further includes a channel 62, an inlet and outlet, and a plugging member 63, wherein the channel 62 is arranged in the outer sleeve 2, the channel 62 is used to accommodate the rolling body, and the channel 62 and the rolling body are slidably connected, an opening is arranged on the inner side of the channel 62, the width of the opening is smaller than the diameter of the rolling body, the inlet and outlet are connected to the channel 62, the far end of the inlet and outlet extends to the outer surface of the outer sleeve 2, and the plugging member 63 is detachably connected to the far end of the inlet and outlet, when the rolling body needs to be replaced, the plugging member 63 is removed, and the rolling body is poured out from the inlet and outlet, so as to replace the rolling body. The drill bit 1 is limited by the rolling body, the contact area between the material stopper 3 and the drill bit 1 is increased, and the rolling body is less likely to be worn.

[0074] Furthermore, as one implementation mode, the blocking member 63 in the embodiment of the utility model is specifically connected to the entrance and exit by a threaded connection.

[0075] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An impactor, characterized in that: include: A drill bit (1), the drill bit (1) comprising a mounting portion and an impact portion, the outer surface of the mounting portion being provided with an inwardly concave groove (11), the groove (11) extending along the axial direction of the mounting portion; An outer sleeve (2) coaxially sleeved on the outside of the mounting portion and directly slidably connected to the mounting portion; A material stopper (3) is arranged on the inner side of the outer sleeve (2), and a sliding gap is provided between the material stopper (3) and the outer surface of the groove (11), and the sliding gap is smaller than the groove depth of the groove (11).

2. The impactor according to claim 1, characterized in that The mounting portion comprises a limiting section (12), a moving section (13) and a guiding section (14) which are connected in sequence, and the groove (11) is arranged on the outer surface of the limiting section (12); The outer sleeve (2) is provided with a first section (21), a second section (22) and a third section (23) connected in sequence, wherein the inner diameters of the first section (21), the second section (22) and the third section (23) gradually increase, the material stopper (3) is arranged on the inner wall of the first section (21), the second section (22) is slidably connected to the moving section (13), and the third section (23) cooperates with the guide section (14) for guiding.

3. The impactor according to claim 2, characterized in that The second section (22) and the moving section (13) are specifically clearance-fitted, and the outer surface of the outer sleeve (2) is also provided with a mounting seat (4), and the mounting seat (4) is used for fixed connection with the binding frame (5).

4. The impactor according to claim 2, characterized in that: Also includes: Bumps, the bumps being arranged at intervals on the outer circumferential surface of the moving section (13), with spline grooves formed between adjacent bumps; A spline is arranged on the inner wall of the second section (22) and is used to cooperate with the spline groove. The splines are arranged at intervals around the inner circumferential surface of the second section, and straight grooves used to cooperate with the protrusion are formed between adjacent splines.

5. The impactor according to any one of claims 1 to 4, characterized in that Also includes: An open groove (61) is provided on the outer sleeve (2), the open groove (61) is perpendicular to the axial direction of the outer sleeve (2), and the material blocking member (3) is sleeved in the open groove (61); A locking piece (31) for fixing the material blocking piece (3) to the outer sleeve (2).

6. The impactor according to claim 5, characterized in that Also includes: A stopper (32) disposed at one end of the material stopper (3); A locking hole is provided on the material blocking member (3) away from the blocking block (32), and the locking member (31) is inserted into the locking hole for fixing.

7. The impactor according to claim 6, characterized in that Also includes: The avoidance grooves (24) are arranged on the outer surface of the outer sleeve (2); the avoidance grooves (24) are arranged in pairs and are respectively arranged at both ends of the opening groove (61).

8. The impactor according to claim 7, characterized in that The groove (11) is specifically an annular groove, and two material blocking members (3) are provided, which are arranged at intervals in the circumferential direction around the outer sleeve (2).

9. The impactor according to any one of claims 1 to 4, characterized in that The material blocking member (3) comprises a plurality of rolling bodies, and the rolling bodies are slidably connected to the inner surface of the outer sleeve (2).

10. The impactor according to claim 9, characterized in that Also includes: A channel (62) disposed in the outer sleeve (2) and used for accommodating the rolling body, wherein an opening is disposed on the inner side of the channel (62); An inlet and outlet are connected to the channel (62), and a distal end of the inlet and outlet extends to the outer surface of the outer sleeve; A blocking piece (63) detachably connected to the distal end of the inlet and outlet.

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