Retracting mechanism and rotary drilling rig

Abstract

The present application provides a retracting mechanism and a rotary drilling rig, which relate to the field of construction machinery. The second of the first moving component and the second moving component is fixed to make the retracting mechanism in the first posture. In the first posture, when the driving component retracts the cable member, the first of the first moving component and the second moving component moves towards the second. The second is released to make the retracting mechanism in the second posture. In the second posture, when the driving component retracts the cable member, the second moves towards the first and can further drive the first and the mechanism to be driven to move together. The retracting mechanism provided by the present application uses a cable member, and realizes the pressurizing and lifting processes by fixing and releasing the second of the two moving components. When the retracting mechanism is applied to a rotary drilling rig, the maintenance difficulty of the cable member is reduced, thereby reducing the cost of the rotary drilling rig.

Description

Technical Field

[0001] This application relates to the field of construction machinery, and particularly to a winding mechanism and a rotary drilling rig. Background Art

[0002] In existing rotary drilling rigs, the pressurization and lifting of the drill pipe adopt two sets of independently operating systems, that is, pressurization and lifting respectively use a set of hoists to drive the steel wire rope to bypass the pulley block, that is, two steel wire ropes are used to respectively control the pressurization and lifting of the drill pipe through the forward and reverse rotation of the hoist, which increases the difficulty of maintaining the steel wire rope and results in an increase in the cost of the rotary drilling rig. Summary of the Invention

[0003] In view of this, this application provides a winding mechanism and a rotary drilling rig, aiming to solve the above technical problems to a certain extent.

[0004] In a first aspect, this application provides a winding mechanism, which includes:

[0005] A first motion component and a second motion component, the first motion component and the second motion component are arranged along a predetermined direction;

[0006] A cable member, the cable member passes through the first motion component and the second motion component;

[0007] A driving component, connected to one end of the cable member;

[0008] The second of the first motion component and the second motion component is fixed to make the winding mechanism in a first posture. In the first posture, when the driving component takes in the cable member, the first of the first motion component and the second motion component moves towards the second;

[0009] The first is connected to the mechanism to be driven;

[0010] The second is released to make the winding mechanism in a second posture. In the second posture, when the driving component takes in the cable member, the second moves towards the first and can further drive the first and the mechanism to be driven to move together.

[0011] Preferably, the first motion component is located above the second motion component, the first motion component forms the first, and the second motion component forms the second.

[0012] Preferably, the first motion component includes a first guiding member, the second motion component includes a second guiding member, a part of the cable member is wound around the first guiding member, and a part of the cable member is wound around the second guiding member;

[0013] When the driving assembly houses the cable member, the portion of the cable member wound around the first guiding member moves along a first clockwise direction, and the portion of the cable member wound around the second guiding member moves along a second clockwise direction, and the first clockwise direction and the second clockwise direction are opposite to each other.

[0014] Preferably, the number of the first guiding members is m, the number of the second guiding members is m + 1, the cable member is alternately wound between the first guiding members and the second guiding members, m is greater than or equal to 1, and m is an integer.

[0015] Preferably, one end of the cable member connected to the driving assembly is defined as the first end of the cable member, and the end of the cable member opposite to the first end of the cable member is defined as the second end of the cable member;

[0016] The winding mechanism further includes a third guiding member, and the second end of the cable member first winds around the third guiding member before winding around the first guiding member and the second guiding member.

[0017] Preferably, the second end of the cable member is fixed at a predetermined position independent of the second guiding member; or

[0018] The second end of the cable member is fixed to the outer portion of the last one of the m + 1 second guiding members.

[0019] Preferably, the first guiding member, the second guiding member, and the third guiding member are all formed as pulleys.

[0020] Preferably, the second moving assembly further includes a seat member, and the second guiding member is disposed on the seat member;

[0021] The driving assembly is formed as a winch;

[0022] The winding mechanism further includes a supporting member, and both the first moving assembly and the second moving assembly are connected to the supporting member and can move relative to the supporting member;

[0023] In the first posture, the second one is fixed to the supporting member.

[0024] In a second aspect, the present application provides a rotary drilling rig including the winding mechanism as described above.

[0025] Preferably, the predetermined direction is the vertical direction, and the rotary drilling rig further includes:

[0026] A mast member, wherein both the first motion assembly and the second motion assembly are connected to the mast member and are capable of moving relative to the mast member in the vertical direction;

[0027] The mechanism to be driven includes the power head and the drill tool of the rotary drilling rig.

[0028] The winching mechanism provided in this application uses a cable member to realize the pressurization and lifting processes by fixing and releasing the second of the two motion assemblies. Applying the winching mechanism to a rotary drilling rig thus reduces the maintenance difficulty of the cable member, thereby reducing the cost of the rotary drilling rig.

[0029] To make the above objects, features, and advantages of this application more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, provides detailed descriptions as follows. Description of the Drawings

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0031] Figure 1 A schematic diagram showing the first attitude of the first embodiment of the winching mechanism;

[0032] Figure 2 A schematic diagram showing the second attitude of the first embodiment of the winching mechanism;

[0033] Figure 3 A schematic diagram showing the lifting ratio of the first embodiment of the winching mechanism;

[0034] Figure 4 A schematic diagram showing the lifting ratio of the second embodiment of the winching mechanism;

[0035] Figure 5 A schematic diagram showing the lifting ratio of the third embodiment of the winching mechanism.

[0036] Reference Signs:

[0037] 1 - Hoisting; 2 - Steel wire rope; 3 - First pulley; 4 - Second pulley; 5 - Third pulley; 6 - Power head; 7 - Pulley frame; 8 - Predetermined position; 9 - Mast;

[0038] A - First lifting ratio; B - Second lifting ratio; C - Third lifting ratio. Detailed Embodiments

[0039] The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0040] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the 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 cannot be construed as a limitation of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of the technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0043] See Figures 1 to 5 , the reel mechanism provided in this embodiment includes a driving component, a first moving component, a second moving component, and a cable member. The connection relationships and working principles of the foregoing components will be specifically described below.

[0044] In the embodiment, the reel mechanism can be used for a rotary drilling rig. For the convenience of the following description of the characteristics of the reel mechanism, the components included in a general rotary drilling rig will be briefly introduced here. A rotary drilling rig usually includes a power head 6 and a drill tool connected below the power head 6. The power head 6 is used to drive the drill tool to drill. The rotary drilling rig usually further includes a mast 9. The mast 9 can be arranged along the vertical direction and play a supporting role. The power head 6 can be lifted and lowered along the mast 9 via a carriage. Thus, when the power head 6 rises, the drill tool is lifted, and when the power head 6 descends, the drill tool can be pressurized.

[0045] Based on the structure of the above rotary drilling rig, refer to Figure 1 , Figure 1 which shows a schematic diagram of the first embodiment of the winding mechanism. In the first embodiment, the first moving component may include a first pulley 3, and the first pulley 3 may be rotatably mounted on the above-mentioned power head 6 via a pin shaft. The second moving component may include a second pulley 4 and a pulley frame 7. The second pulley 4 may also be rotatably mounted on the pulley frame 7 via a pin shaft. Further, the pulley frame 7 may be disposed below the power head 6, and a slider may be provided on the pulley frame 7, and a guide rail cooperating with the slider may be provided on the mast 9. Thus, the pulley frame 7 can also move up and down along the mast 9.

[0046] In the first embodiment, the number of the second pulleys 4 may be two, and the number of the first pulleys 3 may be one. The two second pulleys 4 may be arranged at the same height, for example, the axes of the two second pulleys 4 are located at the same height. The winding mechanism may further include a third pulley 5, and the third pulley 5 may be disposed, for example, on the left side of the power head 6. The foregoing first pulley 3, second pulley 4, and third pulley 5 are all used to be wound by the above-mentioned steel wire rope 2. As for the winding method, specific descriptions will be given below.

[0047] The first end of the steel wire rope 2 may be connected to the hoist 1, so that when the hoist 1 rotates, the steel wire rope 2 can be retracted. The second end of the steel wire rope 2 may first be wound around the third pulley 5, and then alternately wound around the second pulley 4 and the first pulley 3. Here, the so-called "alternately wound" means that after the second end of the steel wire rope 2 winds around the second pulley 4 on the left side, it then winds around the first pulley 3, and then winds around the second pulley 4 on the right side. In the first embodiment, the second end of the steel wire rope 2 may finally be fixed at a predetermined position 8. Continue to refer to Figure 1 , and the predetermined position 8 may be independent of the second pulley 4 on the right side. For example, it may be a point on the mast 9 (the mast 9 shown by the dotted line box in the figure is only for illustrative purposes and does not mean that the mast 9 is only the setting shown in the figure).

[0048] In the first embodiment, the pulley frame 7 may be fixed to the mast 9 or released relative to the mast 9 (i.e., capable of moving up and down relative to the mast 9). Figure 1 What is shown is exactly the case where the pulley frame 7 is fixed to the mast 9. In this case, the attitude of the winding mechanism may be defined as the first attitude. In contrast, Figure 2 what is shown is the case where the pulley frame 7 is released. At this time, the attitude of the winding mechanism may be defined as the second attitude. Combining Figure 1 and Figure 2, regardless of whether the reel mechanism is in the first posture or the second posture, when the winch 1 reels in the wire rope 2, the portion of the wire rope 2 wound around the first pulley 3 moves counterclockwise, and the portion of the wire rope 2 wound around the second pulley 4 moves clockwise. In addition, similarly, the portion of the wire rope 2 wound around the third pulley 5 moves counterclockwise.

[0049] Based on the features described above, the working process of the winch 1 mechanism in the first embodiment will be specifically described below. Still referring to Figure 1 , as mentioned above, Figure 1 shows the first posture of the reel mechanism, that is, the pulley frame 7 is fixed to the mast 9. Therefore, when the winch 1 takes in the wire rope 2, as the wire rope 2 is gradually taken in, the first pulley 3 and the power head 6 will gradually move downward (i.e., move towards the pulley frame 7), thus realizing the pressurization process of the power head 6 and the drill tool. Further referring to Figure 2 , Figure 2 is the second posture of the reel mechanism. When the wire rope 2 is taken in by the winch 1, the pulley frame 7 and the two second pulleys 4 rise. When the pulley frame 7 abuts against the power head 6, the pulley frame 7 and the power head 6 rise synchronously, so that the power head 6 and the drill tool are lifted, thus realizing the lifting process of the power head 6 and the drill tool.

[0050] Further referring to Figure 3 , Figure 3 shows the second posture of the first embodiment of the reel mechanism, that is, the lifting process. As can be found from Figure 3 , the pulley frame 7, the second pulley 4, the first pulley 3, the power head 6 and the drill tool are carried by four segments of the wire rope 2 marked with dotted lines. Therefore, the first lifting ratio A corresponding to the first embodiment of the reel mechanism is 4, that is, the lifting process is carried out at a ratio of 4. Similarly, although not shown, the ratio of the pressurization process is the same as that of the lifting process, that is, it is also 4 times.

[0051] Similarly, referring to Figure 4 , Figure 4 shows the second posture of the second embodiment of the reel mechanism. By comparing Figure 4 and Figure 3 , it can be found that the difference between the second embodiment of the reel mechanism and the first embodiment is only that the predetermined position 8 where the second end of the wire rope 2 is fixed is different. In the second embodiment of the reel mechanism, the second end of the wire rope 2 is fixed to the outer part of the right second pulley 4. Therefore, the pulley frame 7, the second pulley 4, the first pulley 3, the power head 6 and the drill tool are carried by three segments of the wire rope 2 marked with dotted lines, that is, the second lifting ratio B corresponding to the second embodiment of the reel mechanism is 3 times.

[0052] Further referring to Figure 5, Figure 5 shows the second posture of the third embodiment of the winching mechanism, which will be specifically described below. In the third embodiment of the winching mechanism, the number of the first pulleys 3 can be two, the number of the second pulleys 4 can be three, and the setting modes of the other parts can be the same as those in the first embodiment of the winching mechanism. Therefore, the second end of the steel wire rope 2 first winds around the third pulley 5, and then alternately winds around the second pulley 4 and the first pulley 3, that is, first winds around the second pulley 4 on the left side, then winds around the first pulley 3 on the left side, and then further winds around the second pulley 4 in the middle. On this basis, it further winds around the first pulley 3 on the right side, and finally winds around the second pulley 4 on the right side, and is finally fixed at the predetermined position 8.

[0053] Still referring to Figure 5 , it can be known that in the third embodiment of the winching mechanism, the movement laws of the part of the steel wire rope 2 wound around the first pulley 3, the part of the steel wire rope 2 wound around the second pulley 4, and the part of the steel wire rope 2 wound around the third pulley 5 during the winching 1 to store the steel wire rope 2 are the same as those in the first and second embodiments of the winching mechanism, so they will not be elaborated here.

[0054] Further referring to Figure 5 , according to the characteristics described above, during the lifting process of the third embodiment, the pulley frame 7, the second pulley 4, the first pulley 3, and the power head 6 and the drill tool are carried by six section parts of the steel wire rope 2 marked by dotted lines, that is, the third lifting ratio C corresponding to the third embodiment of the winching mechanism is 6 times.

[0055] Based on the three embodiments of the winching mechanism mentioned above, although not mentioned, the embodiments of the winching mechanism are obviously not limited to this. For example, the number of the first pulleys 3 can be m, the number of the second pulleys 4 can be m + 1 (m is greater than or equal to 1 and m is an integer), and in accordance with the above law of winding the steel wire rope 2, combined with the setting of the predetermined position 8, more winching mechanisms can be provided, which will not be elaborated here.

[0056] The winching mechanism provided in this embodiment only uses one steel wire rope 2, and realizes the pressurization and lifting processes by fixing and releasing the pulley frame 7. Therefore, the maintenance difficulty of the steel wire rope 2 is reduced, thereby reducing the cost of the rotary drilling rig. It can also flexibly change the lifting ratio and the pressurization ratio according to actual needs, and can lift and pressurize at a ratio of three times or more.

[0057] This embodiment also provides a rotary drilling rig. The rotary drilling rig includes the winching mechanism, the mast 9, the power head 6 and the drill tool as above, and also includes the beneficial effects as described above, so they will not be elaborated here.

[0058] The above are only the preferred embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent structural transformation made by using the content of the specification and drawings of the present application under the innovative concept of the present application, or any direct / indirect application in other related technical fields is included in the protection scope of the present application.

Claims

1. A retracting mechanism, characterized in that, The retracting mechanism includes: A first motion component and a second motion component, the first motion component and the second motion component being arranged along a predetermined direction; A cable member that passes through the first motion component and the second motion component; A driving component connected to one end of the cable member; The second of the first motion component and the second motion component is fixed to make the retracting mechanism in a first posture. In the first posture, when the driving component retracts the cable member, the first of the first motion component and the second motion component moves toward the second; The first is connected to the mechanism to be driven; The second is released to make the retracting mechanism in a second posture. In the second posture, when the driving component retracts the cable member, the second moves toward the first and can further drive the first and the mechanism to be driven to move together; Wherein, the first motion component is located above the second motion component, the first motion component forms the first, and the second motion component forms the second; the second motion component includes a second guiding member and a seat member, the second guiding member is disposed on the seat member, and the seat member is for lifting movement.

2. The retracting mechanism according to claim 1, wherein The first motion component includes a first guiding member, a part of the cable member is wound around the first guiding member, and a part of the cable member is wound around the second guiding member; When the driving component retracts the cable member, the part of the cable member wound around the first guiding member moves along a first clockwise direction, and the part of the cable member wound around the second guiding member moves along a second clockwise direction, and the first clockwise direction and the second clockwise direction are opposite to each other.

3. The retracting mechanism according to claim 2, wherein The number of the first guiding members is m, the number of the second guiding members is m + 1, and the cable member is alternately wound between the first guiding member and the second guiding member, m is greater than or equal to 1 and m is an integer.

4. The retracting mechanism according to claim 3, wherein One end of the cable member connected to the driving component is defined as the first end of the cable member, and the end of the cable member opposite to the first end of the cable member is defined as the second end of the cable member; The retracting mechanism further includes a third guiding member, and the second end of the cable member passes around the third guiding member prior to the first guiding member and the second guiding member.

5. The retracting mechanism according to claim 4, wherein The second end of the cable member is fixed to a predetermined position, and the predetermined position is independent of the second guiding member; or The second end of the cable member is fixed to the outer part of the last one of the m + 1 second guiding members.

6. The retracting mechanism according to claim 4 or 5, characterized in that The first guiding member, the second guiding member and the third guiding member are all formed as pulleys.

7. The retracting mechanism according to any one of claims 2 to 5, wherein The driving component is formed as a winch; The retracting mechanism further includes a supporting member, and both the first motion assembly and the second motion assembly are connected to the supporting member and are capable of moving relative to the supporting member; In the first posture, the second one is fixed to the supporting member.

8. A rotary drilling rig, characterized in that, Comprising a retracting mechanism according to any one of claims 1 to 7.

9. The rotary drilling rig according to claim 8, characterized in that, The predetermined direction is the vertical direction, and the rotary drilling rig further includes: A mast member, and both the first motion assembly and the second motion assembly are connected to the mast member and are capable of moving along the vertical direction relative to the mast member; The mechanism to be driven includes the power head and the drill tool of the rotary drilling rig.

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