Damping device of rotary excavating equipment and rotary excavating equipment

Abstract

The utility model discloses a rotary excavating equipment damping device and rotary excavating equipment, and the rotary excavating equipment damping device comprises a first adapter used for being connected with a drill rod of the rotary excavating equipment; the second adapter is used for being connected with a drill bit of the rotary excavating equipment, the second adapter and the first adapter can move relatively in the preset direction, and the preset direction is the axial direction of the drill rod; and the first damping piece is arranged between the first adapter piece and the second adapter piece. The damping device of the rotary excavating equipment is arranged between a drill rod and a drill bit of the rotary excavating equipment, it can be ensured that the first damping piece can always play a role in buffering vibration of the drill bit, when the drill rod drives the drill bit to press downwards, the first damping piece can be used for buffering and absorbing vibration, and vibration at the drill bit is prevented from being transmitted to a main machine power head of the rotary excavating equipment through the drill rod; therefore, various problems of interface loosening, oil pipe fracture, weld crack and the like caused by the fact that the main engine power head is affected by vibration for a long time can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and more specifically, to a vibration damping device for rotary drilling rigs. Furthermore, this utility model also relates to a rotary drilling rig including the aforementioned vibration damping device. Background Technology

[0002] Rotary drilling equipment uses multiple telescopic drill rods for rotary drilling, with the bottom section of the drill rod connected to the drill bit.

[0003] In related technologies, the bottommost drill rod section is equipped with a shock absorber. The top of the shock absorber is a free end. When the multiple telescopic drill rod sections are in a retracted state or when the bottommost drill rod section does not extend beyond the next-lower drill rod section, the top of the shock absorber abuts against the bottom of the next-lower drill rod section. In this way, when the rotary drilling rig is operating, the torque and downward pressure are transmitted between the multiple telescopic drill rod sections. When the bottommost drill rod section does not extend beyond the next-lower drill rod section, the next-lower drill rod section abuts against the shock absorber section for buffering, preventing the vibration below the drill bit from being transmitted to the power head of the rotary drilling rig, which could cause the power head to loosen or crack.

[0004] However, when the bottom drill pipe section extends beyond the next bottom drill pipe section, the shock absorber moves away from the next bottom drill pipe section as the bottom section extends, causing the next bottom drill pipe section to detach from the shock absorber. At this point, the top of the shock absorber is a free end and cannot provide shock absorption. In this situation, the vibration below the drill bit will be transmitted to the power head. Especially in hard geological conditions, due to the large downward pressure on the power head spindle, the power head and mast will also experience greater vibration. With prolonged use, this can easily lead to various problems such as loosening of the interface, oil pipe breakage, and weld cracks in the power head or mast.

[0005] In conclusion, ensuring that rotary drilling equipment has good vibration damping is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a vibration damping device for rotary drilling equipment, which can ensure that the rotary drilling equipment has a better vibration damping effect.

[0007] Another objective of this invention is to provide a rotary drilling rig that includes the aforementioned shock absorption device, which has a better shock absorption effect.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A vibration damping device for rotary drilling equipment, comprising:

[0010] The first adapter is used to connect to the drill rod of the rotary drilling equipment;

[0011] The second adapter is used to connect to the drill bit of the rotary drilling equipment. The second adapter and the first adapter can move relative to each other in a preset direction, which is the axial direction of the drill rod.

[0012] The first shock absorber is disposed between the first adapter and the second adapter.

[0013] Optionally, the outer periphery of the first adapter is provided with a first fixing member, the outer periphery of the second adapter is provided with a second fixing member, the first shock absorber is disposed between the first fixing member and the second fixing member, and the first fixing member and the second fixing member are connected by fasteners.

[0014] Optionally, it also includes:

[0015] The second shock absorber is disposed between one of the first and second fixing members and the head or tail end of the fastener.

[0016] Optionally, it also includes:

[0017] A protective sleeve is fitted onto at least the outer periphery of the first shock absorber.

[0018] Optionally, one end of the protective sleeve is provided with a radially inwardly protruding connecting portion, the connecting portion being located on the side of one of the first fixing member and the second fixing member away from the first shock absorber, and the first fixing member, the second fixing member and the connecting portion are connected by the fastener.

[0019] Optionally, a second shock absorber is provided between the head or tail of the fastener and the connecting portion, and the second shock absorber is located inside the protective sleeve.

[0020] Optionally, one of the first adapter and the second adapter is provided with a limiting part for axially limiting the protective sleeve.

[0021] Optionally, one of the first adapter and the second adapter is provided with a first inner square portion, and the other is provided with a first outer square portion that cooperates with and limits the first inner square portion.

[0022] Optionally, the first adapter and the second adapter are each provided with a central hole; and / or,

[0023] A sealing element is provided at the mating surface of the first adapter and the second adapter.

[0024] A rotary drilling rig, comprising any of the above-mentioned rotary drilling rig vibration damping devices.

[0025] The shock absorption device for rotary drilling equipment provided by this utility model has the following beneficial effects:

[0026] This vibration damping device for rotary drilling rigs is applied to the equipment and located between the drill rod and the drill bit. In use, the first adapter connects to the drill rod, forming a single unit. The second adapter connects to the drill bit, also forming a single unit. Both the first and second adapters can move relative to each other along the drill rod's axial direction. Because a first damping element connects the first and second adapters, when the drill rod drives the drill bit downwards, the first damping element buffers and absorbs vibrations, preventing vibrations at the drill bit from being transmitted through the drill rod to the main power head of the rotary drilling rig, thus preventing problems such as loose interfaces, broken oil pipes, and weld cracks caused by long-term vibration. It is understood that the second adapter can move relative to the first adapter along the drill rod's axial direction to accommodate the movement of the first damping element and ensure its damping effect.

[0027] In addition, since the vibration damping device of the rotary drilling equipment is located between the drill rod and the drill bit, it can ensure that the first damping component can always buffer the vibration of the drill bit, thus solving the technical problem in related technologies that the vibration of the drill bit cannot be damped when the bottom section of the drill rod extends.

[0028] The rotary drilling equipment provided by this utility model includes the aforementioned rotary drilling equipment vibration damping device, and at least includes the beneficial effects of the aforementioned rotary drilling equipment vibration damping device. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a cross-sectional view of a vibration damping device for rotary drilling equipment provided in a specific embodiment of the present invention;

[0031] Figure 2 for Figure 1 A cross-sectional view of the first adapter of the shock absorption device of the rotary drilling rig shown;

[0032] Figure 3 for Figure 1 A cross-sectional view of the second adapter of the shock absorption device of the rotary drilling rig shown;

[0033] Figure 4 This is a cross-sectional view of the protective sleeve;

[0034] Figure 5This is a cross-sectional view of a vibration damping device for a rotary drilling rig provided in another specific embodiment of the present invention;

[0035] Figure 6 A cross-sectional view of the first damping component of the rotary drilling equipment's vibration damping device when it is an annular pad.

[0036] Figure 7 A cross-sectional view of the first damping component of the shock absorption device for a rotary drilling rig, when it is a spring.

[0037] Figure 8 A cross-sectional view of the first damping component of the shock absorption device for rotary drilling equipment, which is a disc spring.

[0038] Figure label:

[0039] 1-First adapter; 11-First fixing member; 12-First inner square portion; 13-Second inner square portion; 2-Second adapter; 21-Second fixing member; 22-Limiting portion; 23-First outer square portion; 24-Center hole; 25-Third outer square portion; 3-First shock absorber; 31-Annular pad; 32-Spring; 33-Disc spring; 4-Fastener; 5-Second shock absorber; 6-Protective sleeve; 61-Connecting portion; 7-Sealing member. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0041] The core of this utility model is to provide a vibration damping device for rotary drilling equipment, which can ensure that the rotary drilling equipment has a good vibration damping effect. Another core aspect of this utility model is to provide a rotary drilling equipment including the above-mentioned vibration damping device, which has a good vibration damping effect.

[0042] Please refer to Figure 1 , Figure 2 and Figure 3 This utility model provides a vibration damping device for rotary drilling equipment, including a first adapter 1, a second adapter 2, and a first damping component 3. The first adapter 1 is used to connect to the drill rod of the rotary drilling equipment; the second adapter 2 is used to connect to the drill bit of the rotary drilling equipment. The second adapter 2 and the first adapter 1 are movable relative to each other along a preset direction, which is the axial direction of the drill rod (i.e., the axial direction of the drill rod). Figure 1 (in the vertical direction); the first shock absorber 3 is located between the first adapter 1 and the second adapter 2.

[0043] In other words, the vibration damping device for rotary drilling equipment provided in this embodiment is applied to rotary drilling equipment and is located between the drill rod and the drill bit. In use, the first adapter 1 is connected to the drill rod, making the first adapter 1 and the drill rod an integral structure. The second adapter 2 is connected to the drill bit, making the second adapter 2 and the drill bit an integral structure. Furthermore, the first adapter 1 and the second adapter 2 can move relative to each other along the axial direction of the drill rod. Since a first damping element 3 is connected between the first adapter 1 and the second adapter 2, when the drill rod drives the drill bit downwards, the first damping element 3 can buffer and absorb vibration, preventing vibration at the drill bit from being transmitted to the main power head of the rotary drilling equipment through the drill rod, thus affecting the service life of the main power head. This prevents the main power head from being subjected to long-term vibration, which can lead to various problems such as loose interfaces, broken oil pipes, and weld cracks. It is understood that the second adapter 2 and the first adapter 1 can move relative to each other along the axial direction of the drill rod to accommodate the movement of the first damping element 3 and ensure the damping effect of the first damping element 3.

[0044] In addition, since the vibration damping device of the rotary drilling equipment is located between the drill rod and the drill bit, it can ensure that the first damping component 3 can always buffer the vibration of the drill bit, which can solve the technical problem in the related technology that the vibration of the drill bit cannot be damped when the bottom section of the drill rod extends.

[0045] It should be noted that when the drill rod of the rotary drilling equipment is a multi-section telescopic drill rod, in order to simplify the structure and facilitate the connection, in some embodiments, the first adapter 1 is used to connect with the lowest section of the drill rod of the rotary drilling equipment, so that the shock absorption device of the rotary drilling equipment is located between the lowest section of the drill rod and the drill bit.

[0046] In addition, the shock absorption device of this rotary drilling equipment can be used alone as an alternative to the shock absorption structure in related technologies. For example, the shock absorption component that abuts against the next lower section of the drill rod in the related technologies can be removed, and it can be improved by setting the shock absorption device of the rotary drilling equipment provided in this embodiment between the lowermost section of the drill rod and the drill bit to play a shock absorption and buffering role.

[0047] Of course, another possible solution is as follows: the shock absorption device of the rotary drilling equipment can be used simultaneously with the shock absorption structure in related technologies. That is, in related technologies, the lowest section of the drill rod is provided with a shock absorption component that abuts against the next lower section of the drill rod. At the same time, the rotary drilling equipment shock absorption device provided in this embodiment is provided between the lowest section of the drill rod and the drill bit. The rotary drilling equipment shock absorption device and the shock absorption component in related technologies that is located at the lowest section of the drill rod and abuts against the next lower section of the drill rod work together to achieve a shock absorption and buffering effect.

[0048] It should be noted that this embodiment does not limit the specific arrangement of the first shock absorber 3, as long as the first shock absorber 3 is located between the first adapter 1 and the second adapter 2 and can play a shock absorption role between the first adapter 1 and the second adapter 2.

[0049] like Figure 1 As shown, in some embodiments, the outer periphery of the first adapter 1 is provided with a first fixing member 11, the outer periphery of the second adapter 2 is provided with a second fixing member 21, the first shock absorber 3 is disposed between the first fixing member 11 and the second fixing member 21, and the first fixing member 11 and the second fixing member 21 are connected by fasteners 4.

[0050] In other words, in this embodiment, a first fixing member 11 is provided on the outer periphery of the first adapter 1 to limit one end of the first shock absorber 3, and a second fixing member 21 is provided on the outer periphery of the second adapter 2 to limit the other end of the first shock absorber 3. This limits the first shock absorber 3 between the first fixing member 11 and the second fixing member 21. The first fixing member 11 and the second fixing member 21 are connected together by fasteners 4, so that the first shock absorber 3 is sandwiched between the first adapter 1 and the second adapter 2. That is, both ends of the first shock absorber 3 abut against the first fixing member 11 and the second fixing member 21 respectively, preventing the first fixing member 11 and the second fixing member 21 from separating. This ensures the stability and reliability of the relative positions of the first shock absorber 3, the first fixing member 11 and the second fixing member 21, thereby ensuring that the first shock absorber 3 can play a good shock absorption role. This structure is simple and easy to set up.

[0051] It is understandable that after the first fixing member 11 and the second fixing member 21 are connected by the fastener 4, the first fixing member 11 and the second fixing member 21 are allowed to have a certain amount of relative movement along a preset direction to adapt to the amount of change when the first shock absorber 3 performs shock absorption.

[0052] It should be noted that this embodiment does not limit the specific structure of the first fixing member 11, the second fixing member 21, and the fastener 4. For example, the first fixing member 11 can be a first flange, the second fixing member 21 can be a second flange, the first shock absorber 3 is disposed between the first flange and the second flange, and the fastener 4 can include a bolt and a nut that mates with the bolt. The first fixing member 11 and the second fixing member 21 are connected together by the bolt and nut mating connection.

[0053] Furthermore, such as Figure 1 As shown, the shock absorption device of the rotary drilling equipment also includes a second shock absorber 5, which is disposed between one of the first fixing member 11 and the second fixing member 21 and the head or tail end of the fastener 4.

[0054] In other words, this embodiment uses the second damping member 5 to apply a counter-pressure force to the fastener 4, which can compensate for the deformation of the first damping member 3, keeping the fastener 4 in a tight state and ensuring the reliability of the connection between the first fixing member 11, the second fixing member 21 and the first damping member 3. At the same time, the second damping member 5 acts as a buffer for the fastener 4, ensuring that the fastener 4 is not easy to loosen during vibration, thereby improving the reliability of the connection between the first fixing member 11, the second fixing member 21 and the first damping member 3.

[0055] It should be noted that the head end of the fastener 4 can be close to either the first fixing member 11 or the second fixing member 21. When the head end of the fastener 4 is close to the first fixing member 11, the tail end of the fastener 4 is close to the second fixing member 21. In this case, the second damping member 5 can be located between the first fixing member 11 and the head end of the fastener 4, or between the second fixing member 21 and the tail end of the fastener 4. Alternatively, the head end of the fastener 4 can be close to the second fixing member 21, and the tail end of the fastener 4 can be close to the first fixing member 11. In this case, the second damping member 5 can be located between the first fixing member 11 and the tail end of the fastener 4, or between the second fixing member 21 and the head end of the fastener 4.

[0056] In addition, such as Figure 1 and Figure 4 As shown, in some embodiments, the rotary drilling equipment vibration damping device further includes a protective sleeve 6, which is at least fitted around the outer periphery of the first vibration damping member 3.

[0057] In other words, this embodiment provides a protective sleeve 6 on the outer periphery of the first shock absorber 3, which protects the first shock absorber 3 from damage or wear caused by external impacts, thereby ensuring the reliability of the first shock absorber 3 and improving its service life.

[0058] Furthermore, such as Figure 1 and Figure 4 As shown, in order to facilitate the fixing of the protective sleeve 6, in some embodiments, one end of the protective sleeve 6 is provided with a radially inwardly protruding connecting part 61. The connecting part 61 is located on the side of one of the first fixing member 11 and the second fixing member 21 away from the first shock absorber 3. The first fixing member 11, the second fixing member 21 and the connecting part 61 are connected by fasteners 4.

[0059] In other words, this embodiment provides a connecting part 61 at one end of the protective sleeve 6, and uses fasteners 4 to connect the connecting part 61, the first fixing member 11 and the second fixing member 21 together, thereby fixing the position of the protective sleeve 6 to ensure the positional stability of the protective sleeve 6 relative to the first shock absorber 3, thereby ensuring the reliability of the protective effect of the protective sleeve 6 on the first shock absorber 3.

[0060] It is understandable that the connecting part 61 can be located on the side of the first fixing member 11 away from the first shock absorber 3 (e.g., Figure 5 (As shown), it can also be located on the side of the second fixing member 21 away from the first shock absorber 3.

[0061] In addition, such as Figure 1 As shown, when a second shock absorber 5 is provided between one of the first fastener 11 and the second fastener 21 and the head or tail end of the fastener 4, and a protective sleeve 6 is also included, in some embodiments, a second shock absorber 5 is provided between the head or tail end of the fastener 4 and the connecting portion 61, and the second shock absorber 5 is located inside the protective sleeve 6.

[0062] In other words, when a second shock absorber 5 is provided between one of the first fixing member 11 and the second fixing member 21 and the head or tail end of the fastener 4, and a protective sleeve 6 is also included, the relative positional relationship between the connecting part 61 of the protective sleeve 6 and the second shock absorber 5 is as follows: the second shock absorber 5 is located between the head or tail end of the fastener 4 and the connecting part 61. For example, when the head of the fastener 4 is close to the connecting part 61, the second shock absorber 5 is located between the connecting part 61 and the head of the fastener 4; when the tail end of the fastener 4 is close to the connecting part 61, the second shock absorber 5 is located between the connecting part 61 and the tail end of the fastener 4, and the second shock absorber 5 is located inside the protective sleeve 6. That is, in this case, the protective sleeve 6 also protects the second shock absorber 5, preventing the second shock absorber 5 from being damaged or worn by external impacts, thereby ensuring the reliability of the second shock absorber 5 and improving the service life of the second shock absorber 5.

[0063] In addition, such as Figure 1 As shown, in order to facilitate the rapid positioning and installation of the protective sleeve 6, in some embodiments, one of the first adapter 1 and the second adapter 2 is provided with a limiting part 22 for axially limiting the protective sleeve 6.

[0064] In other words, when installing the protective sleeve 6, the protective sleeve 6 is made to abut against the limiting part 22. The limiting part 22 plays an axial limiting role for the protective sleeve 6, which can ensure the correct position of the protective sleeve 6. At this time, the protective sleeve 6 is at least located on the outer periphery of the first shock absorber 3, so as to ensure that the protective sleeve 6 can at least protect the first shock absorber 3.

[0065] It should be noted that the specific structure of the limiting part 22 is not limited in this embodiment, as long as the limiting part 22 can limit the protective sleeve 6. For example, the limiting part 22 is a radially outward protrusion provided on the outer periphery of the first adapter 1 or the second adapter 2, which limits one end of the protective sleeve 6 or the connecting part 61 of the protective sleeve 6.

[0066] In addition, the above embodiments do not limit the specific connection method between the first adapter 1 and the second adapter 2, as long as it can ensure that the first adapter 1 and the second adapter 2 can move relative to each other in a preset direction and can transmit torque (to ensure the torque transmission from the drill rod to the drill bit).

[0067] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, one of the first adapter 1 and the second adapter 2 is provided with a first inner square portion 12, and the other is provided with a first outer square portion 23 that cooperates with and limits the first inner square portion 12.

[0068] In other words, this embodiment utilizes the cooperation and limiting of the first inner square portion 12 and the first outer square portion 23 to realize the connection of the first adapter 1 and the second adapter 2, so as to ensure that the first adapter 1 and the second adapter 2 can move relative to each other in a preset direction to adapt to the damping movement of the first damping component 3. At the same time, through the cooperation of the first inner square portion 12 and the first outer square portion 23, the torque from the first adapter 1 to the second adapter 2 is transmitted, thereby ensuring the torque transmission from the drill rod to the drill bit.

[0069] In addition, such as Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the first adapter 1 and the second adapter 2 are respectively provided with a central hole 24.

[0070] It is understandable that the center hole 24 of the first adapter 1 and the center hole 24 of the second adapter 2 are connected to allow for the transmission of gas or liquid through the center hole 24, in order to suit special situations such as the need for gas or liquid transmission.

[0071] Furthermore, such as Figure 1 As shown, in some embodiments, a sealing element 7 is provided at the mating surface of the first adapter 1 and the second adapter 2.

[0072] In other words, this embodiment provides a sealing element 7 at the connection between the first adapter 1 and the second adapter 2 to achieve a sealed connection between the first adapter 1 and the second adapter 2, thereby preventing air and liquid leakage.

[0073] It should be noted that the specific structure of the first damping member 3 is not limited in the above embodiments, as long as the first damping member 3 can play a damping role between the first adapter 1 and the second adapter 2. For example, the first damping member 3 can be an annular pad 31 (e.g., Figure 6 As shown), it can also be spring 32 (as shown). Figure 7 As shown), it can also be a disc spring 33 (such as...). Figure 8 (as shown). Those skilled in the art can configure the first damping element 3 with a suitable structure according to actual needs.

[0074] Additionally, it should be noted that the above embodiments do not limit the specific structure of the first adapter 1 for connecting with the drill pipe. For example, as shown in the figure... Figure 2 As shown, the first adapter 1 has a second inner square portion 13, which is used to connect with the second outer square portion at the bottom of the drill pipe.

[0075] The above embodiments do not limit the specific structure of the second adapter 2 for connecting with the drill bit. For example, Figure 3 As shown, the second adapter 2 is provided with a third outer square portion 25, which is used to connect with the third inner square portion of the drill bit.

[0076] In addition to the aforementioned rotary drilling equipment vibration damping device, this utility model embodiment also provides a rotary drilling equipment including the rotary drilling equipment vibration damping device disclosed in the above embodiment. For the structure of other parts of the rotary drilling equipment, please refer to the relevant technology, which will not be repeated here.

[0077] The key point of this embodiment is that the rotary drilling rig adopts the rotary drilling rig vibration damping device disclosed in any of the above embodiments, and at least includes the beneficial effects of the above rotary drilling rig vibration damping device, which will not be repeated here.

[0078] It is understood that the rotary drilling equipment includes a drill rod and a drill bit. The aforementioned rotary drilling equipment vibration damping device is located between the drill rod and the drill bit. The first adapter 1 of the aforementioned rotary drilling equipment vibration damping device is connected to the drill rod, and the second adapter 2 is connected to the drill bit, so as to play a vibration damping role between the drill rod and the drill bit.

[0079] When the drill rod is a multi-section telescopic drill rod, the above-mentioned rotary drilling equipment vibration damping device can be installed between the bottom section of the drill rod and the drill bit.

[0080] It should also be noted that, in this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0081] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0082] The above provides a detailed description of the vibration damping device and rotary drilling equipment provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A vibration damping device for a rotary digging apparatus, characterized by, The utility model relates to a rotary drilling rig shock-absorbing device, comprising: a first adapter (1) for connecting with a drill rod of a rotary drilling rig; a second adapter (2) for connecting with a drill bit of the rotary drilling rig, the second adapter (2) being relatively movable with the first adapter (1) along a preset direction, the preset direction being an axial direction of the drill rod; a first shock-absorbing member (3) arranged between the first adapter (1) and the second adapter (2).

2. The shock absorbing device for a rotary digging apparatus according to claim 1, characterized by The outer periphery of the first adapter (1) is provided with a first fixing member (11), the outer periphery of the second adapter (2) is provided with a second fixing member (21), the first shock-absorbing member (3) is arranged between the first fixing member (11) and the second fixing member (21), and the first fixing member (11) and the second fixing member (21) are connected by a fastener (4).

3. The shock absorbing device for a rotary digging apparatus according to claim 2, characterized by Further comprising: a second shock-absorbing member (5) arranged between one of the first fixing member (11) and the second fixing member (21) and a head end or a tail end of the fastener (4).

4. The shock absorbing apparatus for a rotary digging device of claim 2, wherein Further comprising: a protective sleeve (6) at least sleeved on the outer periphery of the first shock-absorbing member (3).

5. The shock absorbing device for a rotary digging apparatus according to claim 4, wherein One end of the protective sleeve (6) is provided with a radially inwardly convex connecting portion (61), the connecting portion (61) is located on a side of one of the first fixing member (11) and the second fixing member (21) away from the first shock-absorbing member (3), and the first fixing member (11), the second fixing member (21) and the connecting portion (61) are connected by the fastener (4).

6. The shock absorbing device for a rotary digging apparatus according to claim 5, wherein The head or the tail of the fastener (4) and the connecting portion (61) are provided with the second shock-absorbing member (5), and the second shock-absorbing member (5) is located inside the protective sleeve (6).

7. The shock absorbing device for a rotary digging apparatus of claim 4, wherein One of the first adapter (1) and the second adapter (2) is provided with a limiting portion (22) for axially limiting the protective sleeve (6).

8. The shock absorbing apparatus for a rotary digging device according to any one of claims 1 to 7, characterized in that, One of the first adapter (1) and the second adapter (2) is provided with a first inner portion (12), and the other is provided with a first outer portion (23) for cooperating with the first inner portion (12) to limit.

9. The shock absorbing apparatus for a rotary digging device according to any one of claims 1 to 7, characterized in that, The first adapter (1) and the second adapter (2) are respectively provided with a center hole (24); and / or, The mating surface of the first adapter (1) and the second adapter (2) is provided with a sealing member (7).

10. A rotary digging apparatus characterized by, The utility model relates to a rotary drilling rig shock-absorbing device, comprising: a first adapter (1) for connecting with a drill rod of a rotary drilling rig; a second adapter (2) for connecting with a drill bit of the rotary drilling rig, the second adapter (2) being relatively movable with the first adapter (1) along a preset direction, the preset direction being an axial direction of the drill rod; a first shock-absorbing member (3) arranged between the first adapter (1) and the second adapter (2). The outer periphery of the first adapter (1) is provided with a first fixing member (11), the outer periphery of the second adapter (2) is provided with a second fixing member (21), the first shock-absorbing member (3) is arranged between the first fixing member (11) and the second fixing member (21), and the first fixing member (11) and the second fixing member (21) are connected by a fastener (4). Further comprising: a second shock-absorbing member (5) arranged between one of the first fixing member (11) and the second fixing member (21) and a head end or a tail end of the fastener (4). Further comprising: a protective sleeve (6) at least sleeved on the outer periphery of the first shock-absorbing member (3). One end of the protective sleeve (6) is provided with a radially inwardly convex connecting portion (61), the connecting portion (61) is located on a side of one of the first fixing member (11) and the second fixing member (21) away from the first shock-absorbing member (3), and the first fixing member (11), the second fixing member (21) and the connecting portion (61) are connected by the fastener (4). The head or the tail of the fastener (4) and the connecting portion (61) are provided with the second shock-absorbing member (5), and the second shock-absorbing member (5) is located inside the protective sleeve (6). One of the first adapter (1) and the second adapter (2) is provided with a limiting portion (22) for axially limiting the protective sleeve (6). One of the first adapter (1) and the second adapter (2) is provided with a first inner portion (12), and the other is provided with a first outer portion (23) for cooperating with the first inner portion (12) to limit. The first adapter (1) and the second adapter (2) are respectively provided with a center hole (24); and / or, The mating surface of the first adapter (1) and the second adapter (2) is provided with a sealing member (7). The utility model relates to a rotary drilling rig shock-absorbing device, comprising: a first adapter (1) for connecting with a drill rod of a rotary drilling rig; a second adapter (2) for connecting with a drill bit of the rotary drilling rig, the second adapter (2) being relatively movable with the first adapter (1) along a preset direction, the preset direction being an axial direction of the drill rod; a first shock-absorbing member (3) arranged between the first adapter (1) and the second adapter (2). The outer periphery of the first adapter (1) is provided with a first fixing member (11), the outer periphery of the second adapter (2) is provided with a second fixing member (21), the first shock-absorbing member (3) is arranged between the first fixing member (11) and the second fixing member (21), and the first fixing member (11) and the second fixing member (21) are connected by a fastener (4).

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