Mast device and rotary drilling rig

Abstract

The present invention provides a mast device and a rotary drilling rig, belonging to the field of rotary drilling rigs. The mast device comprises an upper mast, a middle mast and a folding mast device; the upper mast and the middle mast are hinged by a pin shaft; a pulley frame for guiding a winch rope is arranged on the upper mast; the folding mast device comprises a first guide member and a second guide member for steering the winch rope; the first guide member is arranged on the pin shaft, and the second guide member is arranged on the middle mast; the winch rope can be tightly attached to the first guide member and the second guide member in a taut state and pass through the pulley frame. Through the mast device and rotary drilling rig provided by the present invention, the existing winch rope on the rotary drilling rig can be used to realize the automatic folding and unfolding of the upper mast, which is time-saving, labor-saving and safe, and does not need to add other actuating components; the setting structure of the guide member is simple, and it is easy to manufacture and arrange.

Description

Technical Field

[0001] The invention relates to the field of rotary drilling rigs, and in particular to a mast device and a rotary drilling rig. Background Art

[0002] A rotary drilling rig is a construction machine suitable for drilling holes in pile foundation projects. Its principle is to use a power head to drive the drill rod to rotate the drill to cut rock and soil, and then use a winch to lift the drill to the outside of the hole to unload the soil. After periodic cycles, the hole is formed. The rotary drilling rig is not only suitable for the construction of sand, clay, silty soil and other soil layers, but also for the construction of rock layers. It has been widely used in various foundation construction projects such as cast-in-place piles, continuous walls, and foundation reinforcement. As an efficient and advanced drilling equipment, the rotary drilling rig has outstanding advantages when drilling large-diameter holes in high-speed railways, bridges, etc.

[0003] During the use of rotary drilling rigs, after the construction is completed at one site, it needs to be transported to another site. Due to the limitations of road transportation conditions, the shorter the transportation length of the drilling rig, the better. Therefore, most rotary drilling rigs currently have the upper mast made into a foldable structure, such as Figure 1 As shown, the upper mast and the pulley frame installed on the upper mast are connected to the mid-mast through a pin shaft and a fastening bolt, and a connecting seat is provided on the side of the upper mast, and a connecting pin is inserted into the connecting seat. With the contact surface between the mid-mast and the upper mast as the symmetry surface, a connecting seat is provided on the side of the mid-mast at a position symmetrical to the connecting seat.

[0004] When the rotary drilling rig is transported to another site, first remove the fastening bolts, pull out the connecting pin from the connecting seat, and then use manual labor or excavators, cranes and other equipment to pull the upper mast and pulley frame to rotate the upper mast and pulley frame around the pin shaft. When the upper mast and pulley frame rotate 180 degrees, the connecting seat and the connecting seat overlap, and the connecting pin is inserted to fix the upper mast and the middle mast together, so as to realize the folding of the upper mast and the pulley frame, thereby reducing the transportation length of the rotary drilling rig. Figure 2 shown.

[0005] When the rig is relocated and then resumes operation, the above reverse operation is performed to connect the upper mast 4 and the middle mast 1 into a straight line to achieve the working state. As can be seen from the above, when the rotary drilling rig is reassembled before and after the relocation, in order to realize the folding and unfolding of the mast device, it needs to be dragged by manpower or equipment such as excavators and cranes, which is time-consuming and labor-intensive, and there are many safety hazards.

[0006] Patent CN201210030675 discloses a mast device for a rotary drilling rig, including an automatic folding mechanism for an upper mast. The automatic folding mechanism for the upper mast is a connecting rod type connection device of a crank slider plus a double rocker, including a connecting rod, an angle rod and a folding cylinder connected to the middle mast. One end of the angle rod is hinged to the connecting rod and the folding cylinder, the other end of the angle rod is hinged to the middle mast, and the other end of the connecting rod is hinged to the upper mast. Although the automatic folding and unfolding of the upper mast can be achieved, the connecting rod structure is too complicated and difficult to manufacture; and it is necessary to add accessories such as cylinders and hydraulic pipelines, which is costly and difficult to promote and apply. Summary of the invention

[0007] The present invention provides a mast device and a rotary drilling rig, aiming to solve the above problems existing in the mast device and the rotary drilling rig in the prior art.

[0008] The present invention is achieved in that:

[0009] A mast device comprises an upper mast, a mid-mast and a folding mast device;

[0010] The upper mast and the middle mast are hinged via a pin;

[0011] The upper mast is provided with a pulley frame for guiding the hoisting rope;

[0012] The mast-folding device comprises a first guide member and a second guide member for steering the hoisting rope;

[0013] The first guide member is arranged on the pin shaft, and the second guide member is arranged on the mid-mast;

[0014] The hoisting rope can be tightly attached to the first guide member and the second guide member in a taut state and pass through the pulley frame.

[0015] In one embodiment of the present invention, the first guide member is a first pulley, and the first pulley has a first winding groove.

[0016] In one embodiment of the present invention, the second guide member is a second pulley, the second pulley has a second winding groove, and the first winding groove is coplanar with the second winding groove.

[0017] In one embodiment of the present invention, the upper mast is also provided with a rope hanging hole for hanging the end of the hoisting rope.

[0018] In one embodiment of the present invention, a rope hanging shaft for hanging the end of the hoisting rope is also provided on the upper mast.

[0019] In one embodiment of the present invention, the mast device has a working state, in which the upper mast is coaxial with the middle mast, a first fixing member is provided on the side of the upper mast opposite to the pin shaft, and a second fixing member is provided on the side of the middle mast opposite to the pin shaft, and the first fixing member and the second fixing member are detachably connected.

[0020] In one embodiment of the present invention, it also includes a fixing bolt, the first fixing member is a first fixing through hole that cooperates with the fixing bolt, the first fixing through hole is axially parallel to the upper mast, and the second fixing member is a second fixing through hole that cooperates with the fixing bolt, and the second fixing through hole is axially parallel to the middle mast.

[0021] In one embodiment of the present invention, the mast device has a folded state. In the folded state, the upper mast and the middle mast are arranged in parallel and side by side. A first connecting seat is provided on the side of the upper mast close to the middle mast, and a second connecting seat is provided on the middle mast at a position opposite to the first connecting seat. The first connecting seat and the second connecting seat are detachably connected.

[0022] In one embodiment of the present invention, it also includes a connecting pin, the first connecting seat is provided with a first connecting through hole that cooperates with the connecting pin, and the second connecting seat is provided with a second connecting through hole that cooperates with the connecting pin. In the folded state, the first connecting through hole is coaxial with the second connecting through hole.

[0023] A rotary drilling rig comprises a rotary drilling rig body and the above-mentioned mast device, wherein the mast device is fixedly arranged on the rotary drilling rig body, and the rotary drilling rig body is provided with a hoisting rope, which can pass through the first guide member, the second guide member and the pulley frame and be fixed on the upper mast.

[0024] The beneficial effects of the present invention are as follows: through the mast device and rotary drilling rig provided by the present invention, the existing hoisting rope on the rotary drilling rig can be used to realize the automatic folding and unfolding of the upper mast, which saves time, labor and safety, and does not require the addition of other actuating components; the setting structure of the guide part is simple and easy to manufacture and arrange. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the 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 invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1It is a structural schematic diagram of the working state of the mast device in the prior art;

[0027] Figure 2 is a schematic structural diagram of a mast device in the prior art in a folded state;

[0028] Figure 3 is a structural schematic diagram of a mast device provided by an embodiment of the present invention from a first perspective;

[0029] Figure 4 is a structural schematic diagram of a mast device provided by an embodiment of the present invention from a second viewing angle;

[0030] Figure 5 yes Figure 4 A partial enlarged view of the middle A area;

[0031] Figure 6 is a structural schematic diagram of a mast device provided by an embodiment of the present invention in a working state under a first winding line;

[0032] Figure 7 is a schematic structural diagram of a mast device provided by an embodiment of the present invention in a folded state under a first winding line;

[0033] Figure 8 yes Figure 7 A partial enlarged view of the middle B area;

[0034] Fig. 9 is a schematic structural diagram of a mast device provided by an embodiment of the present invention in a folded state under a second winding line;

[0035] Fig.10 It is a structural schematic diagram of the mast device provided by an embodiment of the present invention in a working state under the second winding line.

[0036] Icons: 001-mast device; 010-pin shaft; 030-auxiliary winch wire rope; 031-hook; 100-upper mast; 101-first end; 103-second end; 110-hanging rope hole; 130-first fixing piece; 131-fixing bolt; 150-first connecting seat; 151-connecting pin; 200-middle mast; 201-third end; 230-second fixing piece; 250-second connecting seat; 300-folding mast device; 310-first pulley; 330-second pulley; 400-pulley frame. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 understood as a limitation on the present invention.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] Embodiment 1

[0042] This embodiment provides a mast device 001, see Figure 3 The mast device 001 includes an upper mast 100, a middle mast 200 and a folding mast device 300.

[0043] See also Figure 3 and Figure 4 The upper mast 100 has a first end 101 and a second end 103 that are relatively arranged, and the middle mast 200 has a third end 201 close to the upper mast 100, wherein a first connecting portion is arranged on one side of the second end 103 of the upper mast 100, and a second connecting portion corresponding to the first connecting portion is arranged at the third end 201 of the middle mast 200, and the first connecting portion and the second connecting portion are connected by a pin shaft 010, so that the upper mast 100 and the middle mast 200 are hinged.

[0044] After being hinged, the mast device 001 has a working state and a folded state. When the mast device 001 is in the working state, the second end 103 of the upper mast 100 and the third end 201 of the middle mast 200 are in close contact, and the upper mast 100 and the middle mast 200 are coaxial, so that the mast device 001 has the longest working length. When the mast device 001 is in the folded state, the side of the upper mast 100 where the first connecting part is arranged is in close contact with the side of the middle mast 200 where the second connecting part is arranged, that is, the upper mast 100 and the middle mast 200 are arranged in parallel, so that the mast device 001 has the shortest transportation length.

[0045] The mast device 001 provided by the present invention can provide a method of utilizing the hoisting rope (including the main hoisting wire rope and the auxiliary hoisting wire rope 030) of the rotary drilling rig itself to pull the upper mast 100 to realize the upper mast 100 being transferred from the working state to the folding state or from the folding state to the working state.

[0046] The force direction of the hoisting rope is changed by winding the first guide member and the second guide member of the folding mast device 300 to achieve control over the upper mast 100. In the present embodiment, the first guide member is the first pulley 310 and the second guide member is the second pulley 330. The pulleys can minimize the friction between the hoisting rope and the guide members, thereby ensuring the life of the hoisting rope and reducing the working intensity of the winch.

[0047] The first pulley 310 is arranged on the pin 010, so that during the rotation of the upper mast 100, before the hoisting rope is separated from the first pulley 310, the relative position between the outlet end of the hoisting rope after passing around the first pulley 310 and the force application point of the upper mast 100 remains unchanged. This ensures that the hoisting rope continuously applies force to the upper mast 100 and the direction in which the hoisting rope applies force to the upper mast 100 is stable.

[0048] The second pulley 330 is disposed on the middle mast 200, and the hoisting rope is tightened by the middle mast 200 to ensure the force of the middle mast 200. The side of the middle mast 200 provided with the second connecting portion is the first side, and the side opposite to the second side is the second side. In this embodiment, the second pulley 330 is disposed between the first side and the second side of the middle mast 200.

[0049] The first pulley 310 has a first winding groove, and the second pulley 330 has a second winding groove, and the first winding groove and the second winding groove are coplanar.

[0050] At the same time, in order to ensure the force of the hoisting rope, the end of the hoisting rope needs to be fixed. A pulley frame 400 for turning the hoisting rope is provided at the first end 101 of the upper mast 100, and the hoisting rope extending from the second end 103 to the first end 101 can be turned around and directed toward the second end 103 again through the pulley frame 400. In the case where no other fixing device is provided, the end of the hoisting rope can be wrapped around any position on the upper mast 100 and tied and fixed. In this embodiment, a hanging rope hole 110 is provided on the upper mast 100 to facilitate the fixing of the hoisting rope, and the hook 031 at the end of the hoisting rope is directly hung into the hanging rope hole 110 to achieve the fixing of the hoisting rope.

[0051] Through the position distribution of the first pulley 310 and the second pulley 330 provided in this embodiment, a first winding method for turning the upper mast 100 from the working state to the folded state and a second winding method for turning the upper mast 100 from the folded state to the working state can be provided.

[0052] The first winding method uses the auxiliary winch wire rope 030 for winding, and the specific process is as follows:

[0053] See also Figure 6 and Figure 7 , when looking directly at the axis of the first pulley 310 and the second pulley 330, first pass the auxiliary hoisting wire rope 030 around the second pulley 330 clockwise, then pass it around the first pulley 310 counterclockwise, and hang the hook 031 at the end of the auxiliary hoisting wire rope 030 into the rope hanging hole 110, operate the auxiliary hoisting wire rope 030 to retract the rope, and the upper mast 100 and the pulley frame 400 rotate clockwise around the pin 010 under the action of the tension of the auxiliary hoisting wire rope 030. When the upper mast 100 and the pulley frame 400 rotate around the pin 010 to a certain angle, the auxiliary hoisting wire rope 030 is retracted. The hoisting wire rope 030 is detached from the first pulley 310 and only passes around the second pulley 330. The arrangement of the second pulley 330 on the middle mast 200 ensures that the pulling force of the auxiliary hoisting wire rope 030 on the upper mast 100 and the pulley frame 400 is always located on the lower side of the pin 010, that is, it can always ensure that the upper mast 100 and the pulley frame 400 rotate clockwise around the pin 010 under the action of the pulling force of the auxiliary hoisting wire rope 030; the auxiliary hoisting wire rope 030 continues to be reeled in until the upper mast 100 and the pulley frame 400 rotate 180 degrees around the pin 010.

[0054] The second winding method also uses the auxiliary winch wire rope 030 for winding, and the specific process is as follows:

[0055] See also Fig. 9 and Fig.10, when looking directly at the axis of the first pulley 310 and the second pulley 330, first pass the auxiliary hoisting wire rope 030 counterclockwise around the second pulley 330, then pass it clockwise around the first pulley 310, and hang the hook 031 at the end of the auxiliary hoisting wire rope 030 into the rope hanging hole 110, operate the auxiliary hoisting wire rope 030 to retract the rope, and the upper mast 100 and the pulley frame 400 rotate counterclockwise around the pin 010 under the action of the tension of the auxiliary hoisting wire rope 030 until the upper mast 100 and the pulley frame 400 rotate 180 degrees around the pin 010.

[0056] No matter in the working state or in the folded state, the relative positions of the middle mast 200 and the upper mast 100 need to be fixed.

[0057] In the working state, the positions of the upper mast 100 and the middle mast 200 are fixed by the first fixing member 130 and the second fixing member 230 .

[0058] See also Figure 5 In this embodiment, the first fixing member 130 is a first fixing through hole provided on the side of the upper mast 100 corresponding to the pin shaft 010. The second fixing member 230 is a second fixing through hole provided on the side of the middle mast 200 corresponding to the pin shaft 010. In the working state, the first fixing through hole is coaxial with the second fixing through hole and is close to each other. The fixing bolt 131 is inserted into the first fixing through hole and the second fixing through hole in sequence to fix the relative position of the upper mast 100 and the middle mast 200, and then a nut is installed on the fixing bolt 131 to ensure that the mast device 001 is stably in the working state.

[0059] When the mast device 001 needs to be turned into a folded state, the fixing bolts 131 can be taken out to release the fixing cooperation between the upper mast 100 and the middle mast 200 .

[0060] In the folded state, the positions of the upper mast 100 and the middle mast 200 are fixed by the first connecting seat 150 and the second connecting seat 250 .

[0061] See also Figure 8 In this embodiment, the first connection seat 150 is arranged on the side of the upper mast 100 close to the middle mast 200 in the folded state, and the second connection seat 250 is arranged on the side of the middle mast 200 close to the upper mast 100 in the folded state. A first connection hole is arranged on the first connection seat 150, and a second connection hole is arranged on the second connection seat 250. In the folded state, the first connection hole is coaxial with the second connection hole, and the relative position of the first connection seat 150 and the second connection seat 250 is fixed by inserting the connection pin 151 into the first connection hole and the second connection hole at the same time. In this way, the relative position of the upper mast 100 and the middle mast 200 is fixed, ensuring that the mast device 001 is stably in the folded state.

[0062] When the mast device 001 needs to be switched to a working state, the fixing cooperation between the upper mast 100 and the middle mast 200 can be released by taking out the connecting pin 151 .

[0063] It should be noted that in the present embodiment, both the first guide member and the second guide member are pulleys. In other embodiments, they may be replaced with structures such as spokes, as long as a winding foundation can be provided so that the winch rope can be turned.

[0064] In this embodiment, the end of the hoisting rope is fixed by the hanging rope hole 110. In other embodiments, a hanging rope shaft can be fixedly provided on the upper mast 100, and the hook 031 of the end of the hoisting rope is hooked on the hanging rope shaft to achieve the same fixing effect. At the same time, the position of the hanging rope hole 110 or the hanging rope shaft can also be adjusted accordingly, and can be adjusted from the rod body of the upper mast 100 to the pulley frame 400, and still achieve the same fixing effect.

[0065] The first winding method and the second winding method given in this embodiment use the auxiliary hoisting wire rope 030. In other embodiments, the main hoisting wire rope can also be used to realize the rotation of the upper mast 100. It is mainly to ensure that after the hoisting rope is wound, it goes from the first guide member to the pulley frame 400, and the force direction applied to the pulley frame 400 can drive the upper mast 100 to rotate.

[0066] Through the mast device 001 provided by the present invention, the existing winch rope on the rotary drilling rig can be used to realize the automatic folding and unfolding of the upper mast 100, which saves time, labor and safety, and does not require the addition of other actuating components; the setting structure of the guide part is simple and easy to manufacture and arrange.

[0067] Embodiment 2

[0068] This embodiment provides a rotary drilling rig, which includes a rotary drilling rig body and the mast device 001 in the first embodiment.

[0069] The mast device 001 is fixedly mounted on the rotary drilling rig body. The rotary drilling rig body is provided with a hoisting rope. The hoisting rope can pass through the second pulley 330 , the first pulley 310 and the pulley frame 400 , and is fixed on the rope hanging hole 110 of the upper mast 100 .

[0070] The mast device 001 can be converted between the folded state and the working state through the winding method in the first embodiment.

[0071] The rotary drilling rig provided by the present invention can utilize the existing hoisting rope on the rotary drilling rig to realize automatic folding and unfolding of the upper mast 100, which saves time, effort and is safe, and does not require the addition of other actuating components; the setting structure of the guide part is simple and easy to manufacture and arrange.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mast device, characterized in that: Including topmast, midmast and folding mast device; The upper mast and the middle mast are hinged via a pin; The upper mast is provided with a pulley frame for guiding the hoisting rope; The mast-folding device comprises a first guide member and a second guide member for steering the hoisting rope; The first guide member is arranged on the pin shaft, and the second guide member is arranged on the mid-mast; The hoisting rope can be tightly attached to the first guide member and the second guide member in a taut state and pass through the pulley frame; The mast device has a working state and a folded state. In the working state, the upper mast is coaxial with the middle mast; in the folded state, the upper mast and the middle mast are arranged in parallel. The first guide member is a first pulley, and the second guide member is a second pulley; The upper mast is also provided with a rope hole for hanging the end of the hoisting rope; The position distribution of the first pulley and the second pulley provides a first winding method for transferring the upper mast from the working state to the folded state, and a second winding method for transferring the upper mast from the folded state to the working state; The first winding method uses the auxiliary winch wire rope for winding. When looking directly at the axis of the first pulley and the second pulley, first pass the auxiliary winch wire rope around the second pulley clockwise, then pass it around the first pulley counterclockwise, and hang the hook at the end of the auxiliary winch wire rope into the rope hanging hole; The second winding method also uses the auxiliary winch wire rope for winding. When looking directly at the axis of the first pulley and the second pulley, first pass the auxiliary winch wire rope counterclockwise around the second pulley, then clockwise around the first pulley, and hang the hook at the end of the auxiliary winch wire rope into the rope hanging hole.

2. The mast device according to claim 1, characterized in that: The first pulley has a first winding groove.

3. The mast device according to claim 2, characterized in that: The second pulley has a second winding groove, and the first winding groove is coplanar with the second winding groove.

4. The mast device according to claim 1, characterized in that: The upper mast is also provided with a rope hanging shaft for hanging the end of the hoisting rope.

5. The mast device according to claim 1, characterized in that: In the working state, a first fixing member is provided on the side of the upper mast opposite to the pin shaft, and a second fixing member is provided on the side of the middle mast opposite to the pin shaft, and the first fixing member and the second fixing member are detachably connected.

6. The mast device according to claim 5, characterized in that: It also includes a fixing bolt, the first fixing piece is a first fixing through hole matched with the fixing bolt, the first fixing through hole is axially parallel to the upper mast, and the second fixing piece is a second fixing through hole matched with the fixing bolt, the second fixing through hole is axially parallel to the middle mast.

7. The mast device according to claim 1, characterized in that: In the folded state, a first connecting seat is provided on a side of the upper mast close to the middle mast, and a second connecting seat is provided on the middle mast at a position opposite to the first connecting seat, and the first connecting seat and the second connecting seat are detachably connected.

8. The mast device according to claim 7, characterized in that: It also includes a connecting pin, the first connecting seat is provided with a first connecting through hole that cooperates with the connecting pin, the second connecting seat is provided with a second connecting through hole that cooperates with the connecting pin, and in the folded state, the first connecting through hole is coaxial with the second connecting through hole.

9. A rotary drilling rig, characterized in that: It comprises a rotary drilling rig body and a mast device as described in any one of claims 1 to 8, wherein the mast device is fixedly arranged on the rotary drilling rig body, and the rotary drilling rig body is provided with a hoisting rope, and the hoisting rope can pass through the first guide member, the second guide member and the pulley frame, and be fixed on the upper mast.

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