Swivel head device and down-the-hole drill

Abstract

The utility model provides a rotary head device and a down-the-hole drill, and the rotary head device comprises a rotary head used for transmitting power; the rotary head is mounted on the sliding seat, and the sliding seat is used for driving the rotary head to slide together; the transition joint is connected to the rotary head, and the rotary head is used for driving the transition joint to slide together so as to be connected with the drill rod; and the cushioning assembly comprises a fixed seat, an elastic piece and a connecting shaft, the connecting shaft is connected to the fixed seat, the rotating head is arranged on the connecting shaft in a sleeving mode, the two ends of the elastic piece are connected with the fixed seat and the rotating head correspondingly, the elastic piece is used for driving the rotating head to slide along the connecting shaft, and the fixed seat is connected to the sliding seat and used for driving the rotating head and the sliding seat to slide together. According to the swiveling head device, the swiveling head is connected with the sliding seat through the cushioning assembly, when the sliding seat drives the swiveling head and the transition joint to be connected with the drill rod, the impact of the swiveling head on the sliding seat can be buffered through the elastic piece in the cushioning assembly, and the service life of the swiveling head is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of down-the-hole drills, in particular to a rotary head device and a down-the-hole drill. Background Art

[0002] In the traditional fields of geotechnical drilling and mining, down-the-hole drills are one of the key equipment for drilling operations in hard rock or soil. With the development of technology, significant progress has been made in the design and application of down-the-hole drills. However, in the actual operation process, there are still some limitations and deficiencies. In a down-the-hole drill, power is transmitted through a rotary head to drive the drill pipe to work. Therefore, the connection and transmission between the rotary head and the drill pipe are very important.

[0003] For example, in the connection process between the rotary head and the drill pipe, since the rotary head slide block drives the rotary head, the transition joint and the drill pipe to be connected in a hard connection, if the operator operates improperly, it is very easy to damage the connection thread of the transition joint and the drill pipe. At the same time, when the rotary head drives the drill pipe to work, a very large vibration will be generated during the process of drilling the drill pipe into hard rock or soil. Such vibration impact will damage the rotary head, thereby reducing the service life of the rotary head. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a rotary head device that can extend the service life of the rotary head.

[0005] The utility model provides a rotary head buffer device, comprising:

[0006] A rotary head for transmitting power;

[0007] A slide block, the rotary head is mounted on the slide block, and the slide block is used to drive the rotary head to slide together;

[0008] A transition joint connected to the rotary head, and the rotary head is used to drive the transition joint to slide together to connect with the drill pipe;

[0009] A shock absorption assembly, the shock absorption assembly includes a fixed seat, an elastic member and a connecting shaft. The connecting shaft is connected to the fixed seat, the rotary head is sleeved on the connecting shaft, and both ends of the elastic member are respectively connected to the fixed seat and the rotary head. The elastic member is used to drive the rotary head to slide along the connecting shaft, and the fixed seat is connected to the slide block for driving the rotary head and the slide block to slide together.

[0010] In one embodiment, the shock absorption assembly further includes a clamping plate, the clamping plate is connected to the fixed seat, and the connecting shaft is fixedly connected to the fixed seat through the clamping plate.

[0011] In one embodiment, the elastic member is sleeved on the connecting shaft, and the elastic member expands and contracts along the connecting shaft.

[0012] In one embodiment, the fixed seat is provided with a sliding groove, the rotary head is connected in the sliding groove, and the elastic member is used to drive the rotary head to slide in the sliding groove.

[0013] In one embodiment, along the sliding direction of the sliding seat, the sliding groove includes opposite first and second wall surfaces, and the rotary head fits against one of the first wall surface or the second wall surface under the drive of the elastic member.

[0014] In one embodiment, the shock absorption assembly includes at least two elastic members. The at least two elastic members are divided into a first group and a second group. The first group is connected between the first wall surface and the rotary head, and the second group is connected between the second wall surface and the rotary head.

[0015] In one embodiment, along the sliding direction of the sliding seat, the distance between the rotary head and the first wall surface is greater than the maximum compression amount of the elastic member, and the distance between the rotary head and the second wall surface is greater than the maximum compression amount of the elastic member.

[0016] In one embodiment, the rotary head shock absorption device further includes a mounting seat, and the transition joint is connected to the rotary head through the mounting seat.

[0017] In one embodiment, the mounting seat is connected to one side of the rotary head facing the first wall surface, and the first wall surface is provided with a notch. When the rotary head drives the mounting seat to slide towards the first wall surface, the mounting seat fits against the notch.

[0018] An embodiment of another aspect of the present application further provides a down-the-hole drill, including a drill pipe and the rotary head device as described above.

[0019] In the rotary head device provided by the embodiment of the present utility model, the rotary head is connected to the sliding seat through the shock absorption assembly. When the sliding seat drives the rotary head and the transition joint to be connected to the drill pipe, the elastic member in the shock absorption assembly can buffer the impact generated by the drill pipe on the rotary head and the impact generated by the rotary head on the sliding seat, thereby improving the service life of the rotary head and the sliding seat. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 The structural schematic diagram of a swivel head device according to an embodiment of the present utility model.

[0022] Figure 2 The top view of a swivel head device according to an embodiment of the present utility model. Detailed implementation manners

[0023] The following will describe in detail specific embodiments of the present utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the description of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0024] In the description of the present utility model, unless otherwise clearly defined and limited, terms such as "arranged", "installed", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of description and simplification of description, rather than indicating or implying 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 construed as a limitation to the present utility model.

[0026] Terms such as "first", "second", "third", etc. are only used to distinguish elements with similar attributes, rather than indicating or implying relative importance or a specific order.

[0027] The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion. In addition to including the listed elements, it may also include other elements not specifically listed.

[0028] Please refer to Figure 1 andFigure 2 , which shows a swivel head device provided in an embodiment of the present utility model, including:

[0029] A swivel head 1 for transmitting power;

[0030] A sliding seat 2, the swivel head 1 is installed on the sliding seat 2, and the sliding seat 2 is used to drive the swivel head 1 to slide together;

[0031] An adapter 3, the adapter 3 is connected to the swivel head 1, and the swivel head 1 is used to drive the adapter 3 to slide together, so as to connect with the drill pipe;

[0032] A shock absorption assembly 4, the shock absorption assembly 4 includes a fixed seat 41, an elastic member 42 and a connecting shaft 43, the connecting shaft 43 is connected to the fixed seat 41, the swivel head 1 is sleeved on the connecting shaft 43, and both ends of the elastic member 42 are respectively connected to the fixed seat 41 and the swivel head 1. The elastic member 42 is used to drive the swivel head 1 to slide along the connecting shaft 43, and the fixed seat 41 is connected to the sliding seat 2 for driving the swivel head 1 and the sliding seat 2 to slide together.

[0033] In one embodiment, the elastic member 42 is sleeved on the connecting shaft 43, and the elastic member 42 expands and contracts along the connecting shaft 43.

[0034] As Figure 1 shown, this embodiment includes a flat sliding seat 2, which moves along the direction towards or away from the drill pipe under the drive of the power assembly. The swivel head 1 is installed on the sliding seat 2, and the adapter 3 is installed on the swivel head 1. When the sliding seat 2 slides towards the drill pipe, it can drive the swivel head 1 to slide towards the drill pipe together, and the swivel head 1 is connected to the drill pipe through the adapter 3. Therefore, the adapter 3 is installed on the side of the swivel head 1 facing the drill pipe, and the adapter 3 moves towards the drill pipe under the drive of the swivel head 1 and aligns and connects with the drill pipe.

[0035] Because the connection between the adapter 3 and the drill pipe is rigid, the vibration generated during the operation of the drill pipe will be transmitted to the swivel head 1 and the sliding seat 2 through the adapter 3. Then, under the mutual impact between the swivel head 1 and the sliding seat 2, the swivel head 1 and the sliding seat 2 will be worn, shortening the service life of the swivel head 1 and the sliding seat 2.

[0036] In this embodiment, a shock absorption assembly 4 is designed, including a fixed seat 41, an elastic member 42 and a connecting shaft 43. The fixed seat 41 is connected to the sliding seat 2, and the swivel head 1 is connected to the fixed seat 41 through the elastic member 42. At the same time, the fixed seat 41 is also provided with a connecting shaft 43. Preferably, the axis of the connecting shaft 43 is parallel to the sliding direction of the sliding seat 2. The swivel head 1 is sleeved on the connecting shaft 43, that is, the connecting shaft 43 passes through the swivel head 1, and the connection between the swivel head 1 and the connecting shaft 43 is a sliding connection. Therefore, the swivel head 1 slides along the connecting shaft 43 under the drive of the elastic member 42.

[0037] Preferably, there are at least two connecting shafts 43. In this embodiment, taking two connecting shafts 43 as an example, the two connecting shafts 43 are respectively connected to both sides of the rotary head 1, so as to prevent the rotary head 1 from rotating when sliding along the connecting shaft 43. And the rotary head 1 is arranged at an interval from the fixed seat 41 under the support of the connecting shaft 43, thus avoiding friction between the rotary head 1 and the fixed seat 41 when sliding.

[0038] Preferably, in this embodiment, the elastic member 42 is sleeved on the connecting shaft 43. The elastic member 42 will expand and contract when subjected to impact vibration, but the impact vibration transmitted by the drill pipe to the elastic member 42 is not necessarily along the axial direction of the connecting shaft 43. When the elastic member 42 is subjected to impact vibration in a direction deviating from the axial direction, the elastic member 42 may shift during the extrusion process between the fixed seat 41 and the rotary head 1, and further cause the elastic member 42 to slide out from between the fixed seat 41 and the rotary head 1.

[0039] In this embodiment, by passing the connecting shaft 43 through the elastic member 42, the elastic member 42 can only move along the connecting shaft 43, and the movement in other directions is restricted by the connecting shaft 43. Therefore, the elastic member 42 can be prevented from sliding out from between the fixed seat 41 and the rotary head 1 by the way of passing the connecting shaft 43 through the elastic member 42.

[0040] When the rotary head 1 is subjected to impact vibration, the rotary head 1 transmits the impact vibration to the elastic member 42, and the elastic member 42 absorbs the impact vibration, thereby avoiding the mutual impact vibration between the rotary head 1 and the fixed seat 41, and also avoiding the mutual impact vibration between the rotary head 1 and the sliding seat 2. Therefore, in this embodiment, the shock absorption assembly 4 is used to buffer the impact vibration brought by the drill pipe, thereby extending the service life of the transition joint 3, the rotary head 1 and the sliding seat 2.

[0041] In one embodiment, the shock absorption assembly 4 further includes a clamping plate 44, the clamping plate 44 is connected to the fixed seat 41, and the connecting shaft 43 is fixedly connected to the fixed seat 41 through the clamping plate 44.

[0042] As Figure 1 shown, in this embodiment, a clamping plate 44 is also provided at the connection between the connecting shaft 43 and the fixed seat 41. The connecting shaft 43 passes through the fixed seat 41 and is connected to the fixed seat 41. Since the connecting shaft 43 is cylindrical and passes through the fixed seat 41. When the drill pipe is working, the drill pipe and the connecting shaft 43 are both vertically oriented towards the ground. Under the action of gravity and vibration, the connecting shaft 43 may slide out of the fixed seat 41.

[0043] Therefore, in this embodiment, the connection between the connecting shaft 43 and the fixed seat 41 is strengthened by the clamping plate 44. The clamping plate 44 is fixedly connected to the fixed seat 41. Preferably, the connection method is threaded connection. The frame of the clamping plate 44 corresponds to the frame of the connecting shaft 43, so that the connecting shaft 43 is clamped by the clamping plate 44 to prevent the connecting shaft 43 from sliding relative to the fixed seat 41 and ensure the stability of the connection between the connecting shaft 43 and the fixed seat 41.

[0044] In one embodiment, the fixed seat 41 is provided with a sliding groove 45, the swivel head 1 is connected in the sliding groove 45, and the elastic member 42 is used to drive the swivel head 1 to slide in the sliding groove 45. In one embodiment, along the sliding direction of the sliding seat 2, the sliding groove 45 includes opposite first wall surface 451 and second wall surface 452, and the swivel head 1 is attached to one of the first wall surface 451 and the second wall surface 452 under the drive of the elastic member 42.

[0045] Please refer to Figure 1 and Figure 2 , the fixed seat 41 is provided with a sliding groove 45 along the sliding direction of the sliding seat 2, and the length direction of the sliding groove 45 is parallel to the sliding direction of the sliding seat 2. After the swivel head 1 is installed on the fixed seat 41, the swivel head 1 slides in the sliding groove 45 along the length direction of the sliding groove 45. The swivel head 1 slides in the sliding groove 45, and the sliding groove 45 can protect the swivel head 1.

[0046] Preferably, the connecting shaft 43 is installed between the first wall surface 451 and the second wall surface 452 and passes through the first wall surface 451 and the second wall surface 452. When the swivel head 1 slides along the connecting shaft 43, the swivel head 1 may abut against one of the first wall surface 451 and the second wall surface 452. Therefore, in this embodiment, the outer surfaces of the first wall surface 451 and the second wall surface 452 and the corresponding surfaces on the swivel head 1 are designed to have the same shape, so that when the swivel head 1 moves towards one of the first wall surface 451 and the second wall surface 452, it will not be blocked.

[0047] In one embodiment, the shock absorption assembly 4 includes at least two elastic members 42. The at least two elastic members 42 are divided into a first group and a second group. The first group is connected between the first wall surface 451 and the swivel head 1, and the second group is connected between the second wall surface 452 and the swivel head 1.

[0048] Please refer to Figure 1 and Figure 2 , in this embodiment, there are a total of 4 elastic members 42, with two as a group. Preferably, the elastic member 42 is a spring. Along the sliding direction of the sliding seat 2, the first group and the second group are respectively arranged in front of and behind the swivel head 1. Since there are two connecting shafts 43, each of the first group and the second group includes at least two elastic members 42.

[0049] Specifically, in front of the swivel head 1, two elastic members 42 of the first group are respectively sleeved on two connecting shafts 43. Behind the swivel head 1, two elastic members 42 of the second group are also respectively sleeved on two connecting shafts 43. Then, regardless of whether the impact transmitted by the drill pipe is forward or backward, there will be corresponding elastic members 42 to buffer it, thereby protecting the swivel head 1. In this embodiment, the front and rear positions of the swivel head 1 are protected by the first group and the second group.

[0050] In one embodiment, along the sliding direction of the sliding seat 2, the distance between the swivel head 1 and the first wall surface 451 is greater than the maximum compression amount of the elastic member 42, and the distance between the swivel head 1 and the second wall surface 452 is greater than the maximum compression amount of the elastic member 42.

[0051] As Figure 1 shown, when the swivel head 1 is subjected to a forward impact, the swivel head 1 will move forward, thereby squeezing the elastic member 42 between the swivel head 1 and the first wall surface 451, causing the swivel head 1 to move towards the first wall surface 451. Before the elastic member 42 is squeezed to the position of the maximum compression amount, the elastic member 42 can complete the buffering of the impact received by the swivel head 1. That is, the sliding distance of the swivel head 1 is less than the maximum compression amount of the elastic member 42, and the distance between the swivel head 1 and the first wall surface 451 is greater than the maximum compression amount of the elastic member 42, then it can be avoided that the swivel head 1 comes into abutting collision with the first wall surface 451 during the sliding process, preventing damage to the swivel head 1 and the first wall surface 451. Similarly, the distance between the swivel head 1 and the second wall surface 452 is greater than the maximum compression amount of the elastic member 42, which can also avoid the swivel head 1 coming into abutting collision with the second wall surface 452 during the sliding process, and details are not described here again.

[0052] In one embodiment, the swivel head device further includes a mounting seat 5, and the transition joint 3 is connected to the swivel head 1 through the mounting seat 5. In one embodiment, the mounting seat 5 is connected to one side of the swivel head 1 facing the first wall surface 451, and the first wall surface 451 is provided with a notch 453. When the swivel head 1 drives the mounting seat 5 to slide towards the first wall surface 451, the mounting seat 5 fits with the notch 453.

[0053] As Figure 1 shown, in this embodiment, the transition joint 3 is connected to the swivel head 1 through the mounting seat 5. Through the installation of the mounting seat 5, the connection between the transition joint 3 and the swivel head 1 can be made more stable. Because the mounting seat 5 is connected to one side of the swivel head 1 facing the first wall surface 451, the mounting seat 5 is closer to the first wall surface 451 than the swivel head 1. When the mounting seat 5 slides towards the first wall surface 451 together with the swivel head 1, the mounting seat 5 may collide with the first wall surface 451.

[0054] Therefore, in this embodiment, a notch 453 is formed in the first wall surface 451 to provide an avoidance space for the mounting base 5, enabling the mounting base 5 to move along the direction towards the first wall surface 451 without colliding with the first wall surface 451.

[0055] The present utility model further provides a down-the-hole drill, which includes a drill pipe and the swivel head device described above. This down-the-hole drill uses the swivel head device described above to be drivingly connected to the drill pipe, and can buffer the impact vibration brought by the drill pipe, thereby prolonging the service lives of the drill pipe, the transition joint 3, and the swivel head 1.

[0056] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. A rotary head device, characterized in that, Comprising: A swivel head (1) for transmitting power; A slide base (2), the swivel head (1) is mounted on the slide base (2), and the slide base (2) is used to drive the swivel head (1) to slide together; An adapter (3), the adapter (3) is connected to the swivel head (1), and the swivel head (1) is used to drive the adapter (3) to slide together so as to be connected to the drill pipe; A shock-absorbing assembly (4), the shock-absorbing assembly (4) includes a fixed seat (41), an elastic member (42) and a connecting shaft (43), the connecting shaft (43) is connected to the fixed seat (41), the swivel head (1) is sleeved on the connecting shaft (43), both ends of the elastic member (42) are respectively connected to the fixed seat (41) and the swivel head (1), the elastic member (42) is used to drive the swivel head (1) to slide along the connecting shaft (43), the fixed seat (41) is connected to the slide base (2) and is used to drive the swivel head (1) and the slide base (2) to slide together, the fixed seat (41) is provided with a chute (45), the swivel head (1) is connected in the chute (45), and the elastic member (42) is used to drive the swivel head (1) to slide in the chute (45). Along the sliding direction of the slide base (2), the chute (45) includes opposite first and second wall surfaces (451, 452), and the swivel head (1) is in contact with one of the first wall surface (451) or the second wall surface (452) under the drive of the elastic member (42). The shock-absorbing assembly (4) includes at least two elastic members (42), and the at least two elastic members (42) are divided into a first group and a second group. The first group is connected between the first wall surface (451) and the swivel head (1), and the second group is connected between the second wall surface (452) and the swivel head (1).

2. The rotary head device according to claim 1, wherein, The shock-absorbing assembly (4) further includes a clamping plate (44), the clamping plate (44) is connected to the fixed seat (41), and the connecting shaft (43) is fixedly connected to the fixed seat (41) through the clamping plate (44).

3. The turret device according to claim 1, characterized in that, The elastic member (42) is sleeved on the connecting shaft (43), and the elastic member (42) expands and contracts along the connecting shaft (43).

4. The turret device according to claim 1, characterized in that, Along the sliding direction of the slide base (2), the distance between the swivel head (1) and the first wall surface (451) is greater than the maximum compression amount of the elastic member (42), and the distance between the swivel head (1) and the second wall surface (452) is greater than the maximum compression amount of the elastic member (42).

5. The rotary head device according to claim 1, characterized in that, The swivel head device further includes a mounting seat (5), and the adapter (3) is connected to the swivel head (1) through the mounting seat (5).

6. The turret device according to claim 5, characterized in that, The mounting base (5) is connected to one side of the rotary head (1) facing the first wall surface (451). A notch (453) is formed in the first wall surface (451). When the rotary head (1) drives the mounting base (5) to slide towards the first wall surface (451), the mounting base (5) fits with the notch (453).

7. A down-the-hole drill, characterized in that, It includes a drill pipe and a rotary head device as described in any one of claims 1-6.

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