Rotary drilling rig and rotary drilling rig transport method

Abstract

The application relates to the technical field of engineering machinery, and discloses a rotary drilling rig which comprises a mast, a pressurized winch, a power head and a lower tensioning mechanism, the pressurized winch is arranged in the mast, a first rope is wound on the pressurized winch, the power head is connected to the mast, the mast comprises an upper mast, a middle mast and a lower mast which are arranged in sequence, the lower mast is arranged close to the ground, the middle mast is provided with a first pulley block, the power head is connected with a second pulley block, the second pulley block is arranged at one end of the power head close to the upper mast, the first rope is fixedly connected to the lower tensioning mechanism after being wound on the first pulley block and the second pulley block in sequence, and the lower tensioning mechanism can control the tightness of the first rope. The technical scheme of the application can improve the working efficiency of the rotary drilling rig during the transportation of the rotary drilling rig in the field, and can avoid the phenomenon that the first rope is damaged. The application also relates to a transportation method for the field change of the rotary drilling rig.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundation construction machinery, in particular to a rotary drilling rig and a rotary drilling rig transport method. BACKGROUND

[0002] The rotary drilling rig is a construction machinery suitable for hole forming operation in building foundation engineering, mainly suitable for sand soil, cohesive soil, silty soil and other soil construction, widely used in cast-in-place pile, continuous wall, foundation reinforcement and other foundation construction, generally adopting hydraulic caterpillar type telescopic chassis, self-lifting foldable drill mast, telescopic drill rod, vertical automatic detection adjustment, hole depth digital display and the like, the whole machine is generally controlled by hydraulic pilot control and load sensing, with the characteristics of easy and comfortable operation.

[0003] The rotary drilling rig comprises a mast and a power head, the mast is internally provided with a pressurized winch, the mast comprises a lower mast, the lower mast is provided with a transition wheel and a lower pressing plate, the transition wheel is arranged at one end of the lower mast close to the ground, the power head comprises a mounting frame and a lower power wheel, the mounting frame is connected to the mast, and the lower power wheel is arranged in the mounting frame, wherein the lower pull rope of the pressurized winch is wound over the transition wheel and the lower power wheel in sequence, and the end of the lower pull rope is fixedly connected to the lower pull plate; when the mast is in a mast standing state, the lower pull rope is in a tension state; when the mast needs to be lowered, the tension of the lower pull rope is first released, and then the lower pressing plate of the lower mast is disassembled; when the mast is lowered, the lower pull rope is elongated, and the pressurized winch needs to be operated to release the lower pull rope, otherwise the lower pull rope will be broken due to being too tight; in addition, since the lower power wheel is arranged in the mounting frame, when the power head needs to be assembled or disassembled for field conversion, the lower pull rope needs to be wound over the lower power wheel in the mounting frame, the operation space is limited, the operation is inconvenient, and time and energy are wasted; when the lowered mast needs to be switched to a mast standing state, the lower pull rope needs to be wound over the transition wheel and the lower power wheel again when the central mast and the lower mast are folded, which needs to re-wind the rope, and then the excess lower pull rope is fixed on the lower pull plate.

[0004] Since the traditional rotary drilling rig often forgets to disassemble the lower pressing plate or does not operate the pressurized winch to adjust the length of the steel wire rope during field conversion transportation, the lower pull rope is prone to damage. SUMMARY

[0005] In view of the above problems, the present application provides a rotary drilling rig for improving the working efficiency of the rotary drilling rig during field conversion transportation.

[0006] According to an aspect of the embodiments of the present application, a rotary drilling rig is provided, comprising a mast, a pressure winch, a power head and a lower tensioning mechanism, the pressure winch is arranged in the mast, a first rope is wound on the pressure winch, the power head is connected to the mast, the mast comprises an upper mast, a middle mast and a lower mast arranged in sequence, the lower mast is arranged close to the ground, the middle mast is provided with a first pulley block, the power head is connected with a second pulley block, the second pulley block is arranged at one end of the power head close to the upper mast, the first rope is fixedly connected to the lower tensioning mechanism after passing through the first pulley block and the second pulley block in sequence, and the lower tensioning mechanism can control the tightness of the first rope.

[0007] In an alternative way, the first pulley block comprises a first pulley and a second pulley arranged side by side, the second pulley block comprises a first power pulley and a second power pulley arranged side by side, and the first rope on the pressure winch is fixedly connected to the lower tensioning mechanism after passing through the first pulley, the first power pulley and the second pulley in sequence.

[0008] In an alternative way, the middle mast is provided with a first transition pulley, the first transition pulley is arranged at one end of the middle mast close to the upper mast, and the first rope is arranged after passing through the second power pulley and the first transition pulley in sequence.

[0009] In an alternative way, the axis of the first pulley is arranged perpendicularly to the axis of the second pulley block, and the axis of the second pulley block is arranged in parallel to the axis of the first transition pulley.

[0010] In an alternative way, one side of the middle mast is detachably connected to the lower mast, and the other side of the middle mast is connected to the lower mast through a rotating shaft.

[0011] In an alternative way, the power head comprises a mounting seat provided with a first mounting hole, the second pulley block is provided with a second mounting hole, a pin shaft is arranged through the first mounting hole and the second mounting hole, so that the second pulley block is detachably connected to the power head.

[0012] In an alternative way, a second rope is wound on the pressure winch, the upper mast is provided with a third power pulley, a third pulley block, a tensioning pulley and an upper tensioning mechanism, the third power pulley is connected to one side of the upper mast close to the middle mast, the third pulley block and the tensioning pulley are connected to one side of the upper mast away from the middle mast, and an end of the second rope is fixedly connected to the upper tensioning mechanism after passing through the third pulley block, the second power pulley and the tensioning pulley in sequence.

[0013] In an alternative, the axis of the second powered wheel is perpendicular to the axis of the third pulley block.

[0014] In an alternative, the third pulley block comprises a fifth pulley and a sixth pulley arranged side by side, and the second rope is arranged in sequence around the fifth pulley, the third powered wheel, the sixth pulley and the tension pulley.

[0015] The present application relates to a method for transporting a rotary drilling rig from one site to another, and the method comprises:

[0016] elongating the lower tensioning mechanism to release the tension of the first rope;

[0017] disassembling the connection between the lower mast and the middle mast;

[0018] inverting the middle mast and the upper mast.

[0019] The first pulley block is arranged on the middle mast, the first rope on the pressure winch is arranged in sequence around the first pulley block and the second pulley block, and the end of the first rope is fixed on the lower tensioning mechanism. The tension of the first rope is controlled by the lower tensioning mechanism. When the rotary drilling rig needs to be rotated and transported, the tension of the first rope is released by the lower tensioning mechanism, and then the power head is disassembled. The steps of disassembly are reduced, the efficiency of the rotary drilling rig is improved, and the rotary drilling rig is efficient and convenient. In addition, since the lower pull plate is not arranged, the first rope is not damaged.

[0020] The above description is only a summary of the technical scheme of the embodiments of the present application. In order to more clearly understand the technical means of the embodiments of the present application, the content of the specification can be implemented, and in order to make the above and other purposes, characteristics and advantages of the embodiments of the present application more obvious and easy to understand, the specific embodiments of the present application are described below. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings from the structures shown in the drawings without creating any creative labor.

[0022] Figure 1 The structure of the rotary drilling rig of the present application is shown in the structure diagram;

[0023] Figure 2 The side view structure diagram of the middle mast of the present application is shown;

[0024] Figure 3 A rear view structural schematic diagram of the middle mast of the application is shown;

[0025] Figure 4 A rear view structural schematic diagram of the middle mast of the application is shown; Figure 2 A rear view structural schematic diagram of the middle mast of the application is shown;

[0026] Figure 5 A rear view structural schematic diagram of the middle mast of the application is shown;

[0027] Figure 6 A rear view structural schematic diagram of the middle mast of the application is shown;

[0028] The figure number explanation: mast-11; upper mast-111; middle mast-112; lower mast-113; power head-12; mounting base-121; motor-122; speed reducer-123; buffer-124; lower tensioning mechanism-13; first pulley set-14; first pulley-141; second pulley-142; second pulley set-15; first power pulley-151; second power pulley-152; pin shaft-153; pressurized hoist-16; first rope-161; second rope-162; upper tensioning mechanism-17.

[0029] The realization of the object of the application, the functional features and the advantages will be further explained by combining the embodiments with the accompanying drawings. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the application will be described clearly and completely below by combining the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all the other embodiments obtained by those skilled in the art without any creative work under the premise that the object of the application is achieved, belong to the protection scope of the application.

[0031] It should be noted that if the embodiments of the application involve directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directionality indication also changes accordingly.

[0032] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of such technical solutions does not exist, nor within the scope of protection required by the present application.

[0033] As Figures 1 to 6As shown, the rotary drilling rig of the embodiment comprises a mast 11, a pressurized winch 16, a power head 12 and a lower tensioning mechanism 13, the pressurized winch 16 is arranged on the mast 11, the first rope 161 and the second rope 162 are arranged on the pressurized winch 16 respectively, the first rope 161 and the second rope 162 are oppositely wound, the first rope 161 and the second rope 162 are connected with the power head 12 respectively, the first rope 161 is used for pressurizing the power head 12, the second rope 162 is used for lifting the power head 12, the power head 12 is connected with the mast 11, and the power head 12 is connected with a drill rod or a casing, and the power head 12 is used for driving the drill rod or the casing to rotate; the mast 11 comprises an upper mast 111, a middle mast 112 and a lower mast 113 arranged in sequence, the lower mast 113 is arranged close to the ground, the middle mast 112 is provided with a first pulley block 14, the power head 12 is connected with a second pulley block 15, the second pulley block 15 is arranged on one end of the power head 12 close to the upper mast 111, the first rope 161 extending out of the pressurized winch 16 is wound over the first pulley block 14 and the second pulley block 15 in sequence, and then the end of the first rope 161 is fixedly connected with the lower tensioning mechanism 13, and the lower tensioning mechanism 13 can control the tension or relaxation of the first rope 161. In the embodiment, the lower tensioning mechanism 13 can be an oil cylinder or an air cylinder, and of course can also be other telescopic mechanisms; wherein the upper mast 111 and the middle mast 112 are detachably connected through bolt connection or the like, one side of the middle mast 112 and the lower mast 113 is detachably connected through bolt connection or the like, and the other side of the middle mast 112 and the lower mast 113 is connected through a rotating shaft. When it is necessary to reverse the mast, the bolt between the middle mast 112 and the lower mast 113 is disassembled, the lower mast 113 can rotate relative to the middle mast 112, so that the lower mast 113 and the middle mast 112 form an included angle of 90 degrees or 80 degrees, that is, the lower mast 113 and the middle mast 112 are not on the same straight line when the mast is reversed; when the power head 12 exceeds the transportation weight, the power head 12 needs to be disassembled from the mast 11, if the power head 12 does not exceed the transportation weight, the power head 12 can be hung on the lower mast 113.

[0034] In the embodiment of the present application, the first pulley block 14 is arranged on the middle mast 112, the first rope 161 on the pressurized winch 16 is wound over the first pulley block and the second pulley block in sequence, and the end of the first rope 161 is fixed on the lower tensioning mechanism 13, the tension strength of the first rope 161 is controlled through the lower tensioning mechanism 13, when the rotary drilling rig needs to rotate and transport, only the tension of the first rope 161 needs to be removed through the lower tensioning mechanism, the steps of disassembly are reduced, the efficiency of the rotary drilling rig in the field is improved, and it is efficient and convenient. In addition, since the lower pull plate is not arranged in the embodiment of the present application, the phenomenon that the first rope 161 is damaged can be avoided.

[0035] As Figure 4As shown, the first pulley set 14 includes a first pulley 141 and a second pulley 142, the first pulley 141 and the second pulley 142 are arranged side by side, and the first pulley 141 and the second pulley 142 can be arranged in parallel or at an angle less than 90°, the second pulley set 15 includes a first power pulley 151 and a second power pulley 152, the first power pulley 151 and the second power pulley 152 are arranged side by side. The axis of the first pulley 141 is arranged perpendicular to the axis of the second pulley set 15; the first rope 161 on the pressure winch 16 is wound around the first pulley 141, the first power pulley 151 and the second pulley 142 in turn, and the end of the first rope 161 is fixedly connected to the lower tensioning mechanism 13. The lower tensioning mechanism 13 can tension and relax the first rope 161, and prepare for the inverted mast when the first rope 161 is relaxed.

[0036] As shown in Figure 3 , the middle mast 112 is provided with a first transition pulley, which is arranged at one end of the middle mast 112 close to the upper mast 111, and the first rope 161 is wound around the second power pulley 152 and the first transition pulley in turn. The axis of the second pulley set 15 is arranged in parallel with the axis of the first transition pulley.

[0037] As shown in Figure 5 and Figure 6 , the power head 12 includes a mounting seat 121, a motor 122 and a speed reducer 123. The mounting seat 121 is connected to the mast 11, and the second pulley set 15 is connected to the mounting seat 121 and protrudes outward from the mounting seat 121. In this embodiment, the second pulley set 15 is located at the top of the mounting seat 121. When assembling or disassembling the power head 12, since the second pulley set 15 is not arranged inside the power head 12 but exposed outside the power head 12, the first rope 161 can be easily observed and operated during installation. The motor 122 and the speed reducer 123 are connected to the mounting seat 121, one end of the speed reducer 123 is connected to the driving shaft of the motor 122, and the other end of the speed reducer 123 is connected to the casing of the rotary drilling rig. The motor 122 drives the drill pipe and the casing to dig holes through the speed reducer 123. In this embodiment, the mounting seat 121 is provided with a first sliding part, and the mast 11 is provided with a second sliding part matched with the first sliding part. The first sliding part and the second sliding part matched with each other can make the power head 12 move along the length direction of the mast 11, and the mounting seat 121 and the mast 11 are fixedly connected by bolts. A plurality of buffer members 124 are connected between the mounting seat 121 and the motor 122. Each buffer member 124 can provide a buffer force for the motor 122 to avoid damage to the motor 122 due to excessive impact force during use of the rotary drilling rig. The buffer member 124 is preferably a spring.

[0038] In an alternative way, the mounting seat 121 is provided with a first mounting hole, the second pulley set 15 is provided with a second mounting hole, and the pin shaft 153 is arranged through the first mounting hole and the second mounting hole. When the rotary drilling rig is transported in the field, the pin shaft 153 is disassembled to separate the second pulley set 15 from the mounting seat 121, which is more convenient to disassemble and assemble, saves time, and improves efficiency. In the embodiment, the pin shaft 153 is provided with two pin shafts 153, which are arranged in the vertical direction of the mounting seat 121. The pin shaft 153 is used to connect the second pulley set 15 and the mounting seat 121, and the second pulley set 15 is mounted on the pulley frame of the mast 11. Therefore, when the first rope or the second rope drives the second pulley set 15 to move, the mounting seat 121 of the power head 12 is connected with the second pulley set 15 and the pulley frame, respectively. The movement of the second pulley set 15 can drive the power head 12 to move along the length direction of the mast 11.

[0039] In an alternative way, the upper mast 111 is provided with a third pulley set, a tension pulley, and an upper tensioning mechanism 17. The third pulley set and the tension pulley are connected to the side of the upper mast 111 away from the middle mast 112. The second rope 162 is sequentially wound around the third pulley set, the second power pulley, and the tension pulley, and is fixedly connected to the upper tensioning mechanism 17. The axis of the second power pulley is perpendicular to the axis of the third pulley set. The third pulley set includes a fifth pulley and a sixth pulley arranged side by side. The second rope 162 is sequentially wound around the fifth pulley, the second power pulley, the sixth pulley, and the tension pulley. In the embodiment, the upper tensioning mechanism 17 is preferably an oil cylinder or an air cylinder. When it is necessary to lower the mast, the upper tensioning mechanism 17 releases the tension of the second rope 162, and the second rope 162 is in a relaxed state. The upper mast 111 and the middle mast 112 are lowered, so that the upper mast 111 and the middle mast 112 are parallel to the bottom surface. The lower mast 113 is rotated around the rotation shaft, so that the lower mast 113 and the middle mast 112 form an included angle. At this time, the lower mast 113 is in a vertical state. When it is necessary to erect the mast, the upper mast 111 and the middle mast 112 are in a vertical state, respectively. The middle mast 112 is connected with the lower mast 113. Then, the upper tensioning mechanism 17 tightens the second rope 162, and the lower tensioning mechanism 13 tightens the first rope 161.

[0040] In the rotary drilling rig in the embodiment, the first rope 161 and the second rope 162 of the pressure winch 16 are fixed by the lower tensioning mechanism 13 and the upper tensioning mechanism 17, respectively. During construction, the tightness of the first rope 161 and the second rope 162 can be adjusted to the desired position at one time by the telescopic lower tensioning mechanism 13 and the upper tensioning mechanism 17, which saves time, improves efficiency, and reduces the use of manpower.

[0041] The application also provides a transportation method for the field change of the rotary drilling rig. The transportation method for the mast 11 is used for the rotary drilling rig. The method comprises the following steps.

[0042] The lower tensioning mechanism 13 is extended to release the tension of the first rope 161; the support rod of the lower mast 113 is installed to support and fix the lower mast 113.

[0043] The connection between the upper mast 113 and the middle mast 112 is disassembled, the bolt at the connection between the lower mast 113 and the middle mast 112 is removed, and the lower mast 113 can rotate around the middle mast 112 through the rotating shaft;

[0044] The pin between the mounting seat 121 of the power head 12 and the second pulley block 15 is removed.

[0045] The upper tensioning mechanism 17 is extended to release the tension of the second rope 162, the upper mast 111 and the middle mast 112 are inverted, at this time, the upper mast 111 and the middle mast 112 are in a horizontal state, the lower mast 113 is in a vertical state, and the second pulley block 15 is separated from the power head 12.

[0046] When it is necessary to install the vertical mast, the middle mast 112 and the lower mast 113 are folded, the bolt at the connection between the middle mast 112 and the lower mast 113 is installed, and the upper tensioning mechanism 17 is contracted to maintain the tension of the second rope 162.

[0047] The support rod of the lower mast 113 is removed, and the pin 153 between the power head 12 and the second pulley block 15 is installed.

[0048] In the embodiment, when the rotary drilling rig is transported for field conversion and inverted mast, the action of removing the pressing plate and operating the pressing winch 16 to adjust the length of the steel wire rope in the prior art is reduced, the risk of damaging the first rope 161 due to unfamiliar operation during the field conversion and disassembly process can be eliminated, the disassembly time can be reduced, and the efficiency of field transportation can be improved.

[0049] The above is only an optional embodiment of the present application, and does not limit the patent scope of the present application, any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields under the concept of the present application scheme is included in the patent protection scope of the present application.

Claims

1. A rotary drilling rig, characterized in that, The system includes a mast (11), a pressure winch (16), a power head (12), and a lower tensioning mechanism (13). The pressure winch (16) is located inside the mast (11), and a first rope (161) is wound around the pressure winch (16). The power head (12) is connected to the mast (11). The mast (11) includes an upper mast (111), a middle mast (112), and a lower mast (113) arranged sequentially. The lower mast (113) is positioned close to the ground. The middle mast (112) is provided with a first pulley group (14), and the power head (12) is connected to a second pulley group (15). The second pulley group (15) is located at one end of the power head (12) near the upper mast (111). The first rope (161) passes through the first pulley group (14) and the second pulley group (15) in sequence and is then fixedly connected to the lower tensioning mechanism (13). The lower tensioning mechanism (13) can control the tension of the first rope (161). The first pulley group (14) includes a first pulley (141) and a second pulley (142). The first pulley (141) and the second pulley (142) are arranged side by side. The middle mast (112) is provided with a first transition pulley. The first transition pulley is located at one end of the middle mast (112) near the top mast (111). The first rope (161) is arranged to pass around the first transition pulley. The axis of the first pulley (141) is perpendicular to the axis of the second pulley group (15), and the axis of the second pulley group (15) is parallel to the axis of the first transition pulley. The pressure winch (16) is wound with a second rope (162). The upper mast (111) is provided with a third pulley group, a tension pulley and an upper tensioning mechanism (17). The third pulley group and the tension pulley are connected to the side of the upper mast (111) away from the middle mast (112). The second rope (162) passes through the third pulley group, the second power wheel (152) of the second pulley group (15) and the tension pulley in sequence, and the end of the second rope (162) is fixedly connected to the upper tensioning mechanism (17). When the rotary drilling rig needs to be moved to another location, the lower tensioning mechanism (13) releases the tension of the first rope (161), and when the mast needs to be lowered, the upper tensioning mechanism (17) releases the tension of the second rope (162).

2. The rotary drilling rig as described in claim 1, characterized in that, The second pulley group (15) includes a first power wheel (151) and a second power wheel (152). The first power wheel (151) and the second power wheel (152) are arranged side by side. The first rope (161) on the pressure winch (16) passes through the first pulley (141), the first power wheel (151) and the second pulley (142) in sequence, and the end of the first rope (161) is fixedly connected to the lower tensioning mechanism (13).

3. The rotary drilling rig as described in claim 2, characterized in that, The middle mast (112) is detachably connected to one side of the lower mast (113), and the middle mast (112) is connected to the other side of the lower mast (113) via a pivot.

4. The rotary drilling rig as described in claim 3, characterized in that, The power head (12) includes a mounting base (121), the mounting base (121) is provided with a first mounting hole, the second pulley assembly (15) is provided with a second mounting hole, and a pin (153) is provided through the first mounting hole and the second mounting hole, so that the second pulley assembly (15) is detachably connected to the power head (12).

5. The rotary drilling rig as described in any one of claims 1 to 4, characterized in that, The axis of the second power wheel (152) is perpendicular to the axis of the third pulley group.

6. The rotary drilling rig as described in claim 5, characterized in that, The third pulley group includes a fifth pulley and a sixth pulley arranged side by side, and the second rope (162) is arranged to pass through the fifth pulley, the second power wheel (152), the sixth pulley and the tension pulley in sequence.

7. A method for transporting a rotary drilling rig during relocation, used for the rotary drilling rig according to any one of claims 1 to 6, characterized in that, The method includes: The lower tensioning mechanism (13) is extended to relieve the tension of the first rope (161); Disassemble the connection between the lower mast (113) and the middle mast (112); The upper mast (111) and the middle mast (112) are tilted.

Images