Power head buffer device and rotary drilling rig

Abstract

The present application relates to the technical field of engineering machinery and equipment, and in particular to a power head buffer device and a rotary drilling rig, wherein the power head buffer device comprises: a pressure plate body, a key sleeve body and a buffer assembly; the pressure plate body is connected to the key sleeve body, and the key sleeve body is located below the pressure plate body and arranged facing the pressure plate body; the buffer assembly is arranged between the pressure plate body and the key sleeve body, one end of the buffer assembly is connected to the pressure plate body, and the other end of the buffer assembly is movably connected to the key sleeve body, and the buffer assembly can move relative to the key sleeve body. The power head buffer device provided by the present application arranges the buffer assembly between the pressure plate body and the key sleeve body, specifically on the outside of the pressure plate body, avoiding the prior art of arranging the buffer body along the periphery of the key sleeve body, and requiring space to be reserved on the outside of the key sleeve body for arranging the buffer assembly, which not only results in a larger diameter of the buffer device, but also causes the diameter and size of the key sleeve body to be too large, thereby affecting the installation of the power head and the key sleeve body.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery and equipment, and in particular to a power head buffer device and a rotary drilling rig. Background Art

[0002] The power head of a rotary drilling rig is an important component of the rotary drilling rig. The power head usually includes a power box, a speed reducer and a buffer device. The buffer device is installed on the power box and can withstand the heavy impact of the instantaneous fall of the drill rod and protect the power head box components. In the prior art, the buffer device generally includes a tube welding assembly, a buffer pressure plate welding assembly installed above the tube welding, and a buffer body arranged between the tube welding assembly and the buffer pressure plate welding assembly. The buffer body generally includes a spring, a hydraulic buffer, etc. Since the buffer spring and the buffer are arranged around the key sleeve body, it is necessary to leave space for arranging the spring outside the key sleeve body, resulting in a larger overall outer diameter of the buffer device. When the overall space of the power head is arranged, in order to prevent the speed reducer from interfering with the buffer device, it is generally chosen to increase the module of the driven gear ring and the input shaft to increase the center distance of the power head, which makes the cost higher. In addition, when the main machine needs to be transported as a whole, it is necessary to limit the overall height of the power head. The existing power head buffer device structure has structural limitations. Summary of the Invention

[0003] The purpose of this application is to provide a power head buffer device and a rotary drilling rig, so as to solve, to a certain extent, the technical problems existing in the prior art that the overall outer diameter of the buffer device is large, resulting in limitations in the structure and layout of the buffer device.

[0004] The present application provides a power head buffer device, comprising: a pressure plate body, a key sleeve body and a buffer assembly;

[0005] The pressure plate body is connected to the key sleeve body, and the key sleeve body is arranged facing the pressure plate body;

[0006] The buffer assembly is arranged between the pressure plate body and the key sleeve body, one end of the buffer assembly is connected to the pressure plate body, the other end of the buffer assembly is movably connected to the key sleeve body, and the buffer assembly can move relative to the key sleeve body.

[0007] In the above technical solution, further, a first fixing member is provided at one end of the key sleeve body close to the pressure plate body, the pressure plate body and the key sleeve body are connected through the first fixing member, and a ring groove is formed on the side of the first fixing member facing away from the pressure plate body, and the ring groove is arranged around the key sleeve body.

[0008] In any of the above technical solutions, further, the buffer assembly includes a plurality of guide rods, the plurality of guide rods are distributed at intervals, and any of the guide rods is sleeved with an elastic member;

[0009] One end of the elastic member contacts the pressure plate body, and the other end of the elastic member contacts the first fixing member.

[0010] In any of the above technical solutions, further, one end of the guide rod is connected to the surface of the pressure plate body facing the key sleeve body, and the other end of the guide rod passes through the first fixing member and is locked by a first fastener.

[0011] In any of the above technical solutions, further, the buffer assembly also includes a guide member, one end of the guide member is connected to the pressure plate body, and the other end of the guide member is passed through the first fixing member. When the pressure plate body moves toward the key sleeve body, the guide member can pass through the first fixing member and fall into the annular groove.

[0012] In any of the above technical solutions, further, there are multiple guide members, the multiple guide members are arranged at intervals, and the guide members are arranged on the outside of the guide rod.

[0013] In any of the above technical solutions, further, the power head buffer device also includes a second fixing member, which is close to the end of the key sleeve body away from the pressure plate body and is arranged around the key sleeve body.

[0014] In any of the above technical solutions, further, the power head buffer device also includes a plurality of connecting components, and the plurality of connecting components are arranged at intervals along the outer circumference of the key sleeve body.

[0015] The present application also provides a rotary drilling rig, comprising a power head buffer device as described in any of the above technical solutions, and thus having all the beneficial technical effects of the power head buffer device, which will not be repeated here.

[0016] In the above technical solution, further, the rotary drilling rig further comprises: a power head housing, the power head housing being connected to a second fixing member of the power head buffer device that is arranged around the key sleeve body;

[0017] and a drill bit, wherein the drill bit is connected to the key sleeve body of the power head buffer device through connecting members of the power head buffer device that are arranged at intervals along the outer circumference of the key sleeve body.

[0018] Compared with the prior art, the beneficial effect of the present application is that by arranging the buffer assembly between the pressure plate body and the key sleeve body, the buffer body is avoided from being arranged outside the key sleeve body in the prior art, thereby greatly reducing the diameter and size of the key sleeve body and the entire buffer device.

[0019] The power head buffer device provided in the present application includes: a pressure plate body, a key sleeve body and a buffer assembly, wherein the key sleeve body is located below the pressure plate body and the key sleeve body is arranged facing the pressure plate body, the pressure plate body has a cylindrical structure with openings at both ends, and an annular flange is provided at one end of the pressure plate body away from the key sleeve body, the annular flange is perpendicularly arranged to the side wall of the pressure plate body, thereby increasing the area of ​​the end face (opening diameter) of the pressure plate body, the interior of the key sleeve body is hollow, and the key sleeve body and the pressure plate body are connected for passing the drill rod, and the buffer assembly is arranged between the pressure plate body and the key sleeve body, specifically, the buffer assembly is arranged between the annular flange and the key sleeve body, one end of the buffer assembly is connected to the annular flange of the pressure plate body, and the other end of the buffer assembly is movably connected to the key sleeve body.

[0020] Specifically, the power head buffer device is particularly suitable for rotary drilling rigs. When the power head buffer device encounters abnormal situations such as instantaneous falling, the lower surface of the key sleeve body hits the ground or other positions, and the key sleeve body moves toward the pressure plate body. The end face of the key sleeve body in contact with the buffer component squeezes the buffer component, and the buffer component buffers the impact of the key sleeve body, thereby protecting the power head of the rotary drilling rig.

[0021] It can be seen that the power head buffer device provided in the present application arranges the buffer assembly between the pressure plate body and the key sleeve body, specifically on the outside of the pressure plate body, so that the overall outer diameter of the power head buffer device is determined by the diameter and size of the pressure plate body, avoiding the prior art of arranging the buffer body along the outer periphery of the key sleeve body, and requiring space to be reserved on the outside of the key sleeve body for arranging the buffer assembly, which not only results in a larger diameter of the buffer device, but also causes the diameter and size of the key sleeve body to be too large, thereby affecting the installation of the power head and the key sleeve body, and also limiting the overall height of the power head when the main unit needs to be transported as a whole.

[0022] The rotary drilling rig provided in the present application includes the power head buffer device described above. Therefore, the power head buffer device has a smaller diameter, which avoids the problem in the prior art that the drill bit has a larger diameter, resulting in the need to increase the module of the driven gear ring and the input shaft when arranging the overall space of the power head to increase the center distance of the power head, resulting in a complex structure and high cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a schematic structural diagram of the power head buffer device provided in an embodiment of the present application.

[0025] Reference numerals:

[0026] 1-pressure plate body, 2-guide member, 3-annular groove, 4-first fixing member, 5-key sleeve body, 6-second fixing member, 7-connecting member, 8-first fastener, 9-guide rod, 10-elastic member. DETAILED DESCRIPTION

[0027] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0028] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.

[0029] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0030] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0032] Refer to the following Figure 1 The present invention describes a power head buffer device and a rotary drilling rig according to some embodiments of the present application.

[0033] Example 1

[0034] See also Figure 1As shown, an embodiment of the present application provides a power head buffer device, comprising: a pressure plate body 1, a key sleeve body 5 and a buffer assembly;

[0035] The pressure plate body 1 is connected to the key sleeve body 5, and the key sleeve body 5 is located below the pressure plate body 1 and is arranged facing the pressure plate body 1;

[0036] The buffer assembly is arranged between the pressure plate body 1 and the key sleeve body 5. One end of the buffer assembly is connected to the pressure plate body 1, and the other end of the buffer assembly is movably connected to the key sleeve body 5. The buffer assembly can move relative to the key sleeve body 5.

[0037] The power head buffer device provided in the present application includes: a pressure plate body 1, a key sleeve body 5 and a buffer assembly, wherein the key sleeve body 5 is located below the pressure plate body 1 and the key sleeve body 5 is arranged facing the pressure plate body 1, the pressure plate body 1 has a cylindrical structure with two ends open, and an annular flange is provided at one end of the pressure plate body 1 away from the key sleeve body 5. The annular flange is perpendicular to the side wall of the pressure plate body 1, which increases the area of ​​the end face (opening diameter) of the pressure plate body 1. The interior of the key sleeve body 5 is hollow, and the key sleeve body 5 is connected to the pressure plate body 1 for passing the drill rod. The buffer assembly is arranged between the pressure plate body 1 and the key sleeve body 5. Specifically, the buffer assembly is arranged between the annular flange and the key sleeve body 5. One end of the buffer assembly is connected to the annular flange of the pressure plate body 1, and the other end of the buffer assembly is movably connected to the key sleeve body 5.

[0038] Specifically, the power head buffer device is particularly suitable for rotary drilling rigs. When the power head buffer device encounters abnormal situations such as instantaneous falling, the lower surface of the key sleeve body 5 hits the ground or other positions, and the key sleeve body 5 moves toward the pressure plate body 1. The end face of the key sleeve body 5 in contact with the buffer component squeezes the buffer component, and the buffer component buffers the impact of the key sleeve body 5, thereby protecting the power head of the rotary drilling rig.

[0039] It can be seen that the power head buffer device provided in the present application sets the buffer component between the pressure plate body 1 and the key sleeve body 5, specifically on the outside of the pressure plate body 1, so that the overall outer diameter of the power head buffer device is determined by the diameter and size of the pressure plate body 1, avoiding the prior art of setting the buffer body along the outer periphery of the key sleeve body 5, and requiring space to be reserved outside the key sleeve body 5 for arranging the buffer component, which not only leads to a larger diameter of the buffer device, but also leads to the diameter and size of the key sleeve body 5 being too large, thereby affecting the installation of the power head and the key sleeve body 5, and also limiting the overall height of the power head when the main unit needs to be transported as a whole.

[0040] Preferably, if Figure 1 As shown, a first fixing part 4 is provided at one end of the key sleeve body 5 close to the pressure plate body 1, the pressure plate body 1 and the key sleeve body 5 are connected through the first fixing part 4, and a ring groove 3 is formed on the side of the first fixing part 4 facing away from the pressure plate body 1, and the ring groove 3 is arranged around the key sleeve body 5.

[0041] In this embodiment, the first fixing member 4 can be a common flange in the prior art, of course, it is not limited thereto. The first fixing member 4 connects the pressure plate body 1 with the key sleeve body 5. The first fixing member 4 is formed with a plurality of through holes, and is arranged according to Figure 1 In the state shown, an annular groove is provided on the lower surface of the first fixing member 4 , and the annular groove is communicated with the through hole of the first fixing member 4 , so as to extend the depth of the through hole of the first fixing member 4 .

[0042] Preferably, the buffer assembly includes a plurality of guide rods 9 , the plurality of guide rods 9 are spaced apart, and any guide rod 9 is sleeved with an elastic member 10 ;

[0043] One end of the elastic member 10 contacts the pressure plate body 1 , and the other end of the elastic member 10 contacts the first fixing member 4 .

[0044] Furthermore, one end of the guide rod 9 is connected to the surface of the pressure plate body 1 facing the key sleeve body 5 , and the other end of the guide rod 9 passes through the first fixing member 4 and is locked by the first fastener 8 .

[0045] In this embodiment, the elastic member 10 can be a compression spring, and one end of the elastic member 10 abuts against the pressure plate body 1, and the other end of the elastic member 10 abuts against the first fixing member 4, or the key sleeve body 5. One end of the guide rod 9 is fixedly connected to the pressure plate body 1, such as welding, of course not limited to this. The other end of the guide rod 9 passes through the through hole of the first fixing member 4 and is locked with the first fastener 8. The first fastener 8 can be a nut. Preferably, the diameter of the through hole of the first fixing member 4 is slightly larger than the diameter of the guide rod 9. When the pressure plate body 1 or the key sleeve body 5 is squeezed or collided, the guide rod 9 moves relative to the first fixing member 4. At the same time, the elastic member 10 is compressed, preventing the pressure plate body 1 and the key sleeve body 5 from approaching each other, completely or to a certain extent offsetting the impact of the pressure plate body 1 or the key sleeve body 5, avoiding damage to the power head and power box of the rotary drilling rig, and the number of guide rods 9 is multiple, and multiple guide rods 9 with elastic members 10 are distributed at intervals, which enhances the stability of the structure and the ability to withstand impact, and ensures the buffering effect.

[0046] Preferably, the buffer assembly also includes a guide member 2, one end of which is connected to the pressure plate body 1, and the other end of the guide member 2 is passed through the first fixing member 4. When the pressure plate body 1 moves toward the key sleeve body 5, the guide member 2 can pass through the first fixing member 4 and fall into the annular groove 3.

[0047] In this embodiment, the guide member 2 can specifically be a guide key, one end of the guide member 2 is fixedly connected to the pressure plate body 1, and the other end of the guide member 2 passes through the through hole of the first fixing member 4 and falls into the annular groove 3 below the first fixing member 4. When the elastic member 10 contracts, the guide member 2 moves synchronously with the guide rod 9, playing a good guiding role, and the extended key groove formed by the annular groove 3 ensures the guiding effect and enhances the stability of the guide member 2 during the movement (upward or downward) process.

[0048] Preferably, there are multiple guide members 2 , the multiple guide members 2 are arranged at intervals, and the guide members 2 are arranged outside the guide rod 9 .

[0049] In this embodiment, there are multiple guide members 2. On the one hand, the guiding effect is enhanced, and on the other hand, the shear force bearing capacity of the power head buffer device can be significantly improved. When the drill rod is instantly smashed down or collides, the force points are random, the force conditions of each guide rod 9 are different, and the contraction conditions of each elastic member 10 are different, which causes the power head buffer device to be subjected to different degrees of shear force. By setting multiple guide members 2, the overall shear force bearing capacity of the power head buffer device can be significantly improved.

[0050] Preferably, the first fixing member 4 is formed with two rows of through holes, one row of which is relatively closer to the key sleeve body 5 and is used to pass through the guide rod 9, and the other row of which is relatively closer to the edge of the first fixing member 4 and is used to pass through the guide member 2, so that the guide member 2 is located outside the guide rod 9. Multiple guide members 2 can play a role in protecting the guide rod 9 and the elastic member 10.

[0051] Example 2

[0052] Embodiment 2 of the present application also provides a rotary drilling rig (not shown in the figure), including the power head buffer device described in any of the above embodiments, and thus has all the beneficial technical effects of the power head buffer device. The same technical features and beneficial effects will not be repeated here.

[0053] Preferably, if Figure 1 As shown, the rotary drilling rig further includes: a power head housing, which is connected to the second fixing member 6 of the power head buffer device;

[0054] And a drill bit, which is connected to the key sleeve body 5 of the power head buffer device through a connecting member 7.

[0055] Furthermore, the power head buffer device provided in the first embodiment further includes a second fixing member 6 , which is close to the end of the key sleeve body 5 away from the pressure plate body 1 and is arranged around the key sleeve body 5 .

[0056] In this embodiment, the second fixing member 6 may be a flange commonly used in the prior art, and is used to connect to a power head housing of a rotary drilling rig, which provides power to the drill bit.

[0057] Preferably, if Figure 1 As shown, the power head buffer device provided in the first embodiment further includes a plurality of connecting members 7 , which are arranged at intervals along the outer circumference of the key sleeve body 5 .

[0058] In this embodiment, the connecting member 7 can drive the key, and several connecting members 7 are arranged in parallel and at intervals on the inner avoidance or outer surface of the key sleeve body 5 (depending on the type of drill rod and the connection method), and the connecting member 7 is fixed to the key sleeve body 5 by a second fastener (screw and nut). The length direction of the connecting member 7 is consistent with the height direction of the key sleeve body 5. The connecting member 7 is connected to the drill bit, so that the power head housing, the drill bit and the power head buffer device provided in this application are integrated into one to complete the rotary drilling operation.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A power head buffer device, characterized in that: include: A pressure plate body (1), a key sleeve body (5) and a buffer assembly; the key sleeve body (5) is arranged facing the pressure plate body (1); the buffer assembly is arranged between the pressure plate body (1) and the key sleeve body (5), one end of the buffer assembly is connected to the pressure plate body (1), the other end of the buffer assembly is movably connected to the key sleeve body (5), and the buffer assembly can move relative to the key sleeve body (5); A first fixing member (4) is provided at one end of the key sleeve body (5) close to the pressure plate body (1), the first fixing member (4) is formed with a plurality of through holes, and a ring groove (3) is formed on a side of the first fixing member (4) facing away from the pressure plate body (1), the ring groove (3) is connected to the through hole of the first fixing member (4), and the ring groove (3) is provided around the key sleeve body (5); The buffer assembly includes a plurality of guide rods (9), the plurality of guide rods (9) are distributed at intervals, and any of the guide rods (9) is sleeved with an elastic member (10); one end of the elastic member (10) contacts the pressure plate body (1), and the other end of the elastic member (10) contacts the first fixing member (4); one end of the guide rod (9) is connected to a side surface of the pressure plate body (1) facing the key sleeve body (5), and the other end of the guide rod (9) passes through the first fixing member (4) and is locked by a first fastener (8); the diameter of the through hole of the first fixing member (4) is slightly larger than the diameter of the guide rod (9); The buffer assembly also includes a guide member (2), one end of which is connected to the pressure plate body (1), and the other end of which is passed through the first fixing member (4). When the pressure plate body (1) moves toward the key sleeve body (5), the guide member (2) can pass through the first fixing member (4) and fall into the annular groove (3).

2. The power head buffer device according to claim 1, characterized in that: There are multiple guide members (2), the multiple guide members (2) are arranged at intervals, and the guide members (2) are arranged outside the guide rod (9).

3. The power head buffer device according to claim 1 or 2, characterized in that: The power head buffer device further comprises a second fixing member (6), which is close to an end of the key sleeve body (5) away from the pressure plate body (1) and is arranged around the key sleeve body (5).

4. The power head buffer device according to claim 1 or 2, characterized in that: The power head buffer device further comprises a plurality of connecting members (7), and the plurality of connecting members (7) are arranged at intervals along the outer periphery of the key sleeve body (5).

5. A rotary drilling rig, characterized in that: The utility model comprises the power head buffer device according to any one of claims 1 to 4.

6. The rotary drilling rig according to claim 5, characterized in that: The rotary drilling rig further comprises: a power head housing, the power head housing being connected to a second fixing member (6) of the power head buffer device and arranged around the key sleeve body (5); and a drill bit, the drill bit being connected to the key sleeve body (5) of the power head buffer device through connecting members (7) of the power head buffer device arranged at intervals along the outer periphery of the key sleeve body (5).

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