Rotary drilling rig

Abstract

The present invention provides a rotary drilling rig. It includes a main machine, a luffing mechanism, a mast beam, and multiple counterweights. The main machine is connected to the mast beam via the luffing mechanism and is used to drive the mast beam to change its luffing. The multiple counterweights are connected to the main machine. The rig also includes a moving mechanism and a pulley frame assembly. The moving mechanism is mounted on the mast beam, and the pulley frame assembly is movably mounted on the moving mechanism. The moving mechanism is used to drive the pulley frame assembly to move along the extension direction of the mast beam. The pulley frame assembly is used to connect to a lifting unit to lift the counterweight and move it to a target position. The present invention utilizes the mast beam and moving mechanism of the rotary drilling rig itself to achieve safe and reliable lifting of the counterweight, reducing the use and reliance on cranes, enabling rapid disassembly and transfer, and saving costs.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, in particular to a rotary drilling rig. Background Art

[0002] After the piling construction is completed, the rear-inverted mast rotary drilling rig needs to be moved to another site. Due to road control requirements, the counterweight needs to be removed and transported separately. Usually, a tire crane is needed to assist in removing the counterweight of the drilling rig and loading it onto a flatbed trailer for transportation. Each time the counterweight is moved, disassembled, and installed, a lifting equipment is needed to assist in completing the installation and removal work. Each installation and removal requires the rental fee of the lifting equipment, which makes the installation and removal complicated and expensive. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a rotary drilling rig that addresses the drawback of prior art rotary drilling rigs requiring crane assistance during counterweight removal. By utilizing the rotary drilling rig's own mast beam and a separate mobile mechanism, the counterweight can be safely and reliably hoisted, reducing the use and reliance on cranes, saving costs, and enabling rapid removal and relocation.

[0004] According to the present invention, a rotary drilling rig includes a mainframe, a luffing mechanism, a mast beam, and a plurality of counterweights. The mainframe is connected to the mast beam via the luffing mechanism to drive the mast beam to change its luffing, and the plurality of counterweights are connected to the mainframe. The rig also includes a moving mechanism and a pulley frame assembly.

[0005] The moving mechanism is installed on the mast beam, and the pulley frame assembly is movably installed on the moving mechanism. The moving mechanism is used to drive the pulley frame assembly to move along the extension direction of the mast beam. The pulley frame assembly is used to connect the lifting part to lift the counterweight and move it to the target position.

[0006] According to one embodiment of the present invention, the pulley frame assembly includes: a pulley frame and a sliding seat, the sliding seat is movably mounted on the moving mechanism, the pulley frame is connected to the sliding seat, and the pulley frame is provided with a lifting hook for connecting the lifting part to lift the counterweight.

[0007] According to another embodiment of the present invention, the pulley frame assembly includes: a pulley frame and a sliding seat, the sliding seat is movably mounted on the moving mechanism, the pulley frame is connected to the sliding seat, and the sliding seat is provided with a lifting hook for connecting to the lifting part to lift the counterweight.

[0008] According to one embodiment of the present invention, the hoisting part is at least one of a hand hoist and a wire rope.

[0009] According to one embodiment of the present invention, the moving mechanism includes a drive cylinder, which is mounted on an end of the mast beam away from the main engine via a mounting seat, and a piston rod of the drive cylinder is connected to the sliding seat.

[0010] According to one embodiment of the present invention, the moving mechanism further comprises a guide rail, wherein the guide rail is mounted on the mast beam along an extension direction of the mast beam, and the sliding seat is movably mounted on the guide rail.

[0011] According to one embodiment of the present invention, the guide rail is welded to the mast beam.

[0012] According to one embodiment of the present invention, a counterweight installation position is configured on the side of the main machine facing the sliding seat, and a plurality of counterweights are superimposedly installed on the counterweight installation position.

[0013] According to one embodiment of the present invention, the extended end of the piston rod is hinged to one side of the sliding seat.

[0014] According to one embodiment of the present invention, the side of the sliding seat provided with the lifting hook and the side of the sliding seat hinged to the piston rod are respectively arranged on opposite sides of the sliding seat along the moving direction.

[0015] In an application scenario, after obtaining the current position information of the mast beam and the pulley frame assembly, the mast beam is adjusted to rise or fall to a certain height through the luffing mechanism. This height is based on the distance of 300mm between the pulley frame assembly and the upper surface of the self-removal target counterweight. When the pulley frame assembly is 300mm away from the upper surface of the counterweight, the luffing mechanism stops driving the mast beam; the pulley frame assembly is moved to the vicinity of the counterweight through the moving mechanism, and the lifting between the pulley frame assembly and the counterweight is realized through the lifting part; after the lifting part lifts the counterweight 100mm away from the counterweight installation position, the pulley frame assembly is removed through the moving mechanism, and the counterweight is moved according to the planned moving trajectory through the moving mechanism, the pulley frame assembly, the mast beam and the luffing mechanism.

[0016] It should be noted that in the present invention, the luffing mechanism serves as the power mechanism of the mast beam, and the moving mechanism serves as the power mechanism of the pulley frame assembly. The relative position between the mast beam and the pulley frame assembly is adjusted by the luffing mechanism and the moving mechanism, and the relative position between the mast beam and the pulley frame assembly is utilized to realize the self-disassembly of the counterweight during the relative position adjustment process of the mast beam and the pulley frame assembly.

[0017] Specifically, this embodiment provides two implementation methods for lifting the counterweight by using a pulley frame assembly. One is to connect the lifting hook of the pulley frame with the lifting part to achieve the lifting of the counterweight. The other is to connect the lifting hook of the sliding seat with the lifting part to achieve the lifting of the counterweight, and the lifting part can move with the movement of the pulley frame, thereby moving the counterweight to the target position.

[0018] The above one or more technical solutions in the present invention have at least one of the following technical effects: the present invention provides a rotary drilling rig, which utilizes the mast beam of the rotary drilling rig itself and the provided moving mechanism to realize safe and reliable lifting of the counterweight, reduces the use and dependence on the crane, realizes rapid disassembly and rapid transfer, achieves the effect of one machine with multiple functions, and can save the rental cost of a 25t lifting equipment. Current similar models do not have this function, which greatly enhances the competitiveness of the rotary drilling rig of this embodiment.

[0019] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the structural relationship of the rotary drilling rig provided by the present invention;

[0022] Figure 2 It is a structural schematic diagram of the display moving mechanism of the rotary drilling rig provided by the present invention.

[0023] Reference numerals:

[0024] 1. Main machine; 2. Booming mechanism; 3. Mast beam; 4. Moving mechanism; 41. Guide rail; 42. Drive cylinder; 43. Piston rod; 44. Mounting seat; 5. Pulley frame; 6. Hoisting part; 7. Counterweight; 8. Moving trolley; 9. Counterweight mounting position; 10. Sliding seat; 11. Lifting hook. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not 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 efforts shall fall within the scope of protection of the present invention.

[0026] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0027] The embodiment of the present invention provides a rotary drilling rig, such as Figure 1 and Figure 2 As shown, it mainly includes a main machine 1, a luffing mechanism 2, a mast beam 3 and multiple counterweights 7, a pulley frame assembly, and a moving mechanism 4.

[0028] Specifically, the main engine 1 is connected to the mast beam 3 via the luffing mechanism 2 for driving the mast beam 3 to perform luffing, and a plurality of counterweights 7 are connected to the main engine 1 .

[0029] It is understandable that the main machine 1 , the luffing mechanism 2 and the mast beam 3 are all existing components of the rotary drilling rig, and the present embodiment does not make any improvements to the main machine 1 , the luffing mechanism 2 and the mast beam 3 .

[0030] It is worth noting that in this embodiment, the moving mechanism 4 is installed on the mast beam 3, and the pulley frame assembly is movably installed on the moving mechanism 4. The moving mechanism 4 is used to drive the pulley frame assembly to move along the extension direction of the mast beam 3. The pulley frame assembly is used to connect the lifting part 6 to lift the counterweight 7 and move it to the target position, so as to facilitate the disassembly of the counterweight 7.

[0031] This embodiment realizes the self-disassembly of the counterweight 7 of the rotary drilling rig by utilizing the mast beam 3 and the pulley frame assembly of the rotary drilling rig itself and the additionally provided moving mechanism 4 .

[0032] In actual application, the mast beam 3 is connected to the amplitude variation mechanism 2, and the pulley frame assembly is connected to the moving mechanism 4, wherein the amplitude variation mechanism 2 is used to adjust the amplitude of the mast beam 3, and the moving mechanism 4 is connected to the mast beam 3, driving the pulley frame assembly to slide along the extension direction of the mast beam 3, and then adjusting the position of the pulley frame assembly. By adjusting the relative position between the mast beam 3 and the pulley frame assembly, the pulley frame assembly is moved to the counterweight installation position 9 set on the main machine 1, and the counterweight 7 on the counterweight installation position 9 is hoisted by connecting the pulley frame assembly to the hoisting part 6, thereby realizing self-disassembly of the counterweight 7.

[0033] Specifically, the lifting part 6 can be at least one of a steel wire rope and a steel wire rope, that is, the lifting part 6 can be a separate steel wire rope, a separate hand hoist, or a combination of a steel wire rope and a hand hoist. For the convenience of lifting, the lifting part 6 of this embodiment adopts a combination of a steel wire rope and a hand hoist.

[0034] See Figure 1 Furthermore, by adjusting the relative position of the mast beam 3 and the pulley frame assembly, the counterweight 7 is moved to the target position, which can be on the mobile trolley 8. By hoisting the counterweight 7 onto the mobile trolley 8 and transporting it away, the counterweight 7 can be self-disassembled. No lifting equipment is required to lift the counterweight 7, which saves costs and makes it easy to disassemble the counterweight 7.

[0035] In an application scenario, after obtaining the current position information of the mast beam 3 and the pulley frame assembly, the mast beam 3 is adjusted to rise or fall to a certain height through the luffing mechanism 2. This height is based on the distance between the pulley frame assembly and the upper surface of the self-removal target counterweight 7 by 300 mm. When the pulley frame assembly is 300 mm away from the upper surface of the counterweight 7, the luffing mechanism 2 stops driving the mast beam 3; the pulley frame assembly is moved to the vicinity of the counterweight 7 through the moving mechanism 4, and the lifting between the pulley frame assembly and the counterweight 7 is realized through the lifting part 6; after the lifting part 6 lifts the counterweight 7 away from the counterweight installation position 9 by 100 mm, the pulley frame assembly is removed through the moving mechanism 4, and the counterweight 7 is moved according to the planned moving trajectory through the moving mechanism 4, the pulley frame assembly, the mast beam 3 and the luffing mechanism 2.

[0036] It should be noted that in the present invention, the variable amplitude mechanism 2 serves as the power mechanism of the mast beam 3, and the moving mechanism 4 serves as the power mechanism of the pulley frame assembly. The position adjustment of the pulley frame assembly relative to the mast beam 3 is realized by the moving mechanism 4, and the relative height of the pulley frame assembly relative to the mast beam 3 is adjusted by the variable amplitude mechanism 2, so as to realize the self-disassembly of the counterweight 7 during the relative position adjustment process of the mast beam 3 and the pulley frame assembly.

[0037] In a specific embodiment, the pulley frame assembly includes a pulley frame 5 and a sliding seat 10. The sliding seat 10 is movably mounted on the mobile mechanism 4. The pulley frame assembly is slidably connected to the mobile mechanism 4 through the sliding seat 10. The pulley frame 5 is connected to the sliding seat 10. The specific connection method can be hinged. Of course, other connection methods can also be used. The pulley frame 5 is provided with a lifting hook 11, which can be a lifting hook 11 provided by the pulley frame 5 or a lifting hook 11 provided separately for the pulley frame 5, which is used to connect the lifting part 6 to lift the counterweight 7. The lifting part 6 has been specifically introduced above and will not be repeated here.

[0038] In another specific embodiment, the pulley frame assembly includes a pulley frame 5 and a sliding seat 10. The sliding seat 10 is movably mounted on the moving mechanism 4. The pulley frame 5 is connected to the sliding seat 10. The sliding seat 10 is provided with a lifting hook 11. That is, the lifting hook 11 can also be set on the sliding seat 10 for connecting the lifting part 6 to lift the counterweight 7.

[0039] Specifically, this embodiment provides two implementation methods for lifting the counterweight 7 by the pulley frame assembly. One is to lift the counterweight 7 through the lifting hook 11 of the pulley frame 5, and the other is to connect the lifting hook 11 of the sliding seat 10 with the lifting part 6, so that the lifting part 6 can move with the movement of the pulley frame 5, and then the lifting part 6 is set to a hand hoist and / or a wire rope, and correspondingly a hook body is provided on the counterweight 7 to cooperate with the lifting part 6 to realize the lifting of the counterweight 7.

[0040] See Figure 2 According to one embodiment of the present invention, the moving mechanism 4 includes a driving cylinder, for example, a hydraulic cylinder, which is installed on the end of the mast beam 3 away from the main machine 1 through a mounting base. In order to ensure the stability of the installation of the driving cylinder body, both ends of the cylinder body can be installed on the mast beam 3 through mounting bases. In this embodiment, the driving cylinder can be installed at the bottom of the mast beam 3, and the piston rod of the driving cylinder is connected to the sliding seat 10, which is used to push or pull the sliding seat 10 to move, specifically, it can be a movement toward the direction of the main machine 1 or a movement away from the direction of the main machine 1.

[0041] Please see again Figure 2 In order to facilitate the guidance of the sliding seat 10 so that the sliding seat 10 moves more steadily and smoothly, according to one embodiment of the present invention, the moving mechanism 4 also includes a guide rail 41, and the guide rail 41 is installed on the mast beam 3 along the extension direction of the mast beam 3, so as to ensure that the moving direction of the sliding seat 10 is the extension direction of the mast beam 3, and the sliding seat 10 is movably installed on the guide rail 41.

[0042] In a specific embodiment, the guide rail 41 can be set to a shape similar to an I-shape, and the sliding seat 10 is wrapped around the outside of the guide rail 41. The opposite sides of the sliding seat 10 can be set to protrusions protruding outward, and the protrusions are just stuck in the grooves on both sides of the I-shape, ensuring the reliability of the connection between the sliding seat 10 and the guide rail 41.

[0043] In order to ensure the reliability of the installation of the guide rail 41, according to one embodiment of the present invention, the guide rail 41 can be welded to the mast beam 3. Of course, the guide rail 41 is not limited to the welding method, and other suitable stable connection methods can also be used.

[0044] In order to increase the weight of the chassis of the rotary drilling rig and improve the stability of the rotary drilling rig during operation, according to one embodiment of the present invention, a counterweight mounting position 9 is constructed on the side of the main machine 1 facing the sliding seat 10, and multiple counterweights 7 are stacked and installed on the counterweight mounting position 9, thereby ensuring that the overall weight of the main machine 1 is increased and the stability of the chassis of the rotary drilling rig is improved. By stacking multiple counterweights 7 on the counterweight mounting position 9, the setting area of ​​the counterweight mounting position 9 can be saved, making the overall structure of the main machine 1 compact. Of course, multiple counterweights 7 can also be placed side by side on the counterweight mounting position 9, which can be selected according to actual needs.

[0045] In addition, this embodiment sets the counterweight installation position 9 on the side of the main machine 1 facing the sliding seat 10, so that the counterweight 7 is close to the sliding seat 10 after installation, thereby facilitating the lifting hook 11 on the sliding seat 10 or the lifting hook 11 on the pulley frame 5 to quickly move to the top of the counterweight 7 at the shortest distance to carry out the next step of lifting the counterweight 7, thereby improving work efficiency.

[0046] According to one embodiment of the present invention, the extended end of the piston rod can be hinged or fixedly connected to one side of the sliding seat 10, so that the piston rod can push or pull the sliding seat 10 to move.

[0047] To avoid interference, according to one embodiment of the present invention, the side of the sliding seat 10 provided with the lifting hook 11 and the side of the sliding seat 10 hinged to the piston rod are respectively arranged on opposite sides of the sliding seat 10 along the moving direction.

[0048] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0049] Finally, it should be noted that the above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and are intended to be encompassed by the claims of the present invention.

Claims

1. A rotary drilling rig comprising a mainframe, a luffing mechanism, a mast beam, and a plurality of counterweights, wherein the mainframe is connected to the mast beam via the luffing mechanism to drive the mast beam to change its luffing, and the plurality of counterweights are connected to the mainframe; characterized in that: Also included is a moving mechanism and pulley frame assembly; The moving mechanism is mounted on the mast beam, and the pulley frame assembly is movably mounted on the moving mechanism. The moving mechanism is used to drive the pulley frame assembly to move along the extension direction of the mast beam, and the pulley frame assembly is used to connect the hoisting part to lift the counterweight and move it to the target position; The pulley frame assembly includes: a pulley frame and a sliding seat, the sliding seat is movably mounted on the moving mechanism, and the pulley frame is connected to the sliding seat; The moving mechanism includes a drive cylinder, which is mounted on the end of the mast beam away from the main engine through a mounting seat, and the piston rod of the drive cylinder is connected to the sliding seat; The moving mechanism further comprises a guide rail, wherein the guide rail is mounted on the mast beam along an extension direction of the mast beam, and the sliding seat is movably mounted on the guide rail; The luffing mechanism serves as the power mechanism of the mast beam, and the moving mechanism serves as the power mechanism of the pulley frame assembly. The position of the pulley frame assembly relative to the mast beam is adjusted by the moving mechanism, and the relative height of the pulley frame assembly relative to the mast beam is adjusted by the luffing mechanism, so as to realize the self-disassembly of the counterweight during the relative position adjustment process of the mast beam and the pulley frame assembly.

2. A rotary drilling rig according to claim 1, characterized in that: The pulley frame is provided with a lifting hook for connecting to the lifting part to lift the counterweight.

3. The rotary drilling rig according to claim 1, characterized in that: The sliding seat is provided with a lifting hook for connecting to the lifting part to lift the counterweight.

4. A rotary drilling rig according to claim 2 or 3, characterized in that: The hoisting part is at least one of a hand hoist and a wire rope.

5. The rotary drilling rig according to claim 1, characterized in that: The guide rails are welded to the mast beams.

6. A rotary drilling rig according to claim 2 or 3, characterized in that: A counterweight installation position is configured on a side of the main machine facing the sliding seat, and a plurality of counterweights are superimposedly installed on the counterweight installation position.

7. The rotary drilling rig according to claim 6, characterized in that: The extended end of the piston rod is hinged to one side of the sliding seat.

8. The rotary drilling rig according to claim 7, characterized in that: The side of the sliding seat where the lifting hook is provided and the side of the sliding seat where the sliding seat is hinged to the piston rod are respectively arranged on two opposite sides of the sliding seat along the moving direction.

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