Pulley yoke fixing device, rotary drilling rig with pulley yoke fixing device and fixing method

Abstract

The invention discloses a pulley yoke fixing device, a rotary drilling rig with the pulley yoke fixing device and a fixing method, and relates to the field of pile foundation construction equipment. Comprising a bottom plate and a lug plate, the bottom plate comprises a mounting part and a fixing part, the fixing part is used for fixing the bottom plate to a mast, the lug plate is mounted on the mounting part of the bottom plate, and a connecting hole is formed in the lug plate and used for being connected with a pulley yoke. The pulley yoke fixing device has the beneficial effects that the pulley yoke can be kept in a working state in the operation process of equipment, meanwhile, firm fixation can be kept, and damage caused by shaking of the pulley yoke is avoided.

Description

Technical Field

[0001] The invention relates to the field of pile foundation construction equipment, and in particular to a pulley frame fixing device, a rotary drilling rig having the same, and a fixing method. Background Art

[0002] like Figure 1 and Figure 2 As shown in the figure, when the pile foundation construction equipment with winch pressurization is transferred, in order to reduce the height or the travel limit of the pressurized wire rope, it is necessary to separate the power head 30 from the pulley frame 20 and rotate the power head 30 around the pivot shaft 31 to the bottom of the mast 10 for transportation, which can reduce the overall height of the equipment.

[0003] When the pulley frame 20 is separated from the power head 30, in order to continue to maintain the working posture of the pulley frame 20, it is necessary to apply tension to the pulley frame 20 in different directions at the same time through the first steel wire rope 1 and the second steel wire rope 2, so that the pulley frame 20 and the mast 10 maintain a relatively static posture, and then wrap and fix them with packaging tape.

[0004] However, this method may cause the pulley frame 20 to be not firmly fixed. Specifically, the first steel wire rope 1, the second steel wire rope 2 and the packaging belt have a certain elasticity. When encountering bumps during transportation, the three will produce elastic deformation, resulting in a temporary disappearance of the tension, which will cause the pulley frame 20 to shake during transportation, which may damage the paint surface of the equipment or even the structure.

[0005] Furthermore, by applying tension simultaneously by the first steel wire rope 1 and the second steel wire rope 2 to maintain the position of the pulley frame 20, equal tension can be achieved in theory. However, since the lines of action of the tension of the first steel wire rope 1 and the second steel wire rope 2 do not coincide, additional torque will be generated on the pulley frame 20, causing the pulley frame 20 to be in an unbalanced state, which is an unreliable fixing scheme. Summary of the invention

[0006] In view of this, an object of the present invention is to provide a pulley frame fixing device and a rotary drilling rig and a fixing method having the same, which can stably fix the pulley frame after the power head is separated from the pulley frame.

[0007] The present invention provides a pulley frame fixing device, comprising a base plate and an ear plate, wherein the base plate comprises a mounting portion and a fixing portion, wherein the fixing portion is used to fix the base plate to a mast, and the ear plate is installed on the mounting portion of the base plate, wherein a connecting hole is provided on the ear plate, and wherein the connecting hole is used to connect the pulley frame.

[0008] Optionally, there are multiple ear plates, and the multiple ear plates are distributed at intervals on the bottom plate, and the pulley frame is located between the ear plates.

[0009] Optionally, a notch is provided on the bottom plate, the notch divides the fixed portion into two spaced-apart connecting portions, the connecting portions are provided with mounting holes, and the bottom plate is fixed to the mast through the mounting holes.

[0010] Optionally, the base plate has a first end and a second end opposite to each other, the fixing portion is located at the first end, the mounting portion is located at the second end, and the width of the notch gradually decreases in the direction from the first end to the second end.

[0011] Optionally, in a direction from the connecting portion to the second end, the width of the bottom plate gradually decreases.

[0012] Optionally, the two connecting portions are symmetrically distributed relative to the midline of the base plate.

[0013] The present invention also provides a rotary drilling rig, comprising a power head, a mast, a pulley frame and the pulley frame fixing device described above; the power head is rotatably connected to the mounting end of the mast, the pulley frame is connected to the power head when the rotary drilling rig is working, and is connected to the pulley frame fixing device when the rotary drilling rig is transported.

[0014] Optionally, the pulley frame is movably mounted on the mast via a steel rope, one end of the pulley frame has an assembly portion, the assembly portion is provided with an assembly hole, the pulley frame fixing device and the pulley frame are connected to the assembly hole of the pulley frame via the connecting hole of the ear plate.

[0015] Optionally, the power head has a locking portion, and a locking hole is provided on the locking portion. When the power head is rotated to fit with the mounting end of the mast, the power head is connected to the pulley frame through the locking hole and the connecting hole.

[0016] The present invention also provides a pulley frame fixing method, comprising the following steps: S10, when the rotary drilling rig is working normally, the power head is fixedly connected to the pulley frame through the locking part and the assembly part; S20, when the rotary drilling rig stops working and operates, the power head is disconnected from the pulley frame and the power head rotates around the mast so that the power head is located below the mast; S30, fixing the fixing portion of the bottom plate of the pulley frame fixing device to the mast through the mounting hole, and fixing the lug on the mounting portion of the bottom plate to the pulley frame; S40, after the rotary drilling rig is operated to the work site, the pulley frame fixing device is removed from the mast and the pulley frame fixing device is separated from the pulley frame, the power head is turned over to be aligned with the mast, and the power head and the pulley frame are fixedly connected through the locking part and the assembly part.

[0017] The beneficial effects of the present invention are as follows: the pulley frame fixing device and the rotary drilling rig and fixing method having the same provided by the present invention can firmly fix the pulley frame on the mast through the pulley frame fixing device after the power head is separated from the pulley frame on the mast, thereby preventing the pulley frame from shaking and causing damage to the equipment when the equipment is running. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are 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 creative work.

[0019] Figure 1 It is a structural schematic diagram of existing pile foundation construction equipment.

[0020] Figure 2 It is a schematic diagram of the fixing method of the pulley frame in the existing pile foundation construction equipment.

[0021] Figure 3 The figure is a schematic structural diagram of a pulley frame fixing device of the present invention.

[0022] Figure 4 This is a structural schematic diagram of a pulley frame fixing device of the present invention from another perspective.

[0023] Figure 5 The present invention is a partial structural schematic diagram of a rotary drilling rig.

[0024] Figure 6 The present invention is a partial structural schematic diagram of a rotary drilling rig.

[0025] Figure 7 The present invention is a partial structural schematic diagram of a rotary drilling rig.

[0026] In the figure: The first wire rope 1; Second steel wire rope 2; Mast 10, mounting end 11; Pulley frame 20, frame body 21, assembly portion 22, assembly hole 221, pulley 23; The power head 30, the pivot shaft 31, the locking portion 32, the locking hole 321, the vertical plate 322, the first side edge 33, and the second side edge 34; Bottom plate 40, fixing portion 41, connecting portion 411, through slot 412, mounting portion 42, mounting hole 43, first end 44, second end 45; Ear plate 50, connecting hole 51; Pad 60; Connecting shaft 70; Screw 80. DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the description 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.

[0028] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" 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. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] The terms "first", "second", "third", etc. are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0031] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0032] like Figure 3 and Figure 4 As shown in , this embodiment provides a pulley frame fixing device, including a base plate 40 and an ear plate 50 , wherein the base plate 40 has a first end 44 and a second end 45 opposite to each other, and the ear plate 50 is disposed at the second end 45 of the base plate 40 and is perpendicular to the base plate 40 .

[0033] Specifically, the base plate 40 is roughly A-shaped, and includes an integral mounting portion 42 and a fixing portion 41. The ear plate 50 is mounted on the mounting portion 42 of the base plate 40, and a connecting hole 51 is provided on the ear plate 50 for fixing the pulley frame. The fixing portion 41 is provided with a mounting hole 43, and the pulley frame fixing device is connected to the mounting end of the mast through the mounting hole 43 on the fixing portion 41. The mounting end of the mast refers to the end of the mast connected to the power head. The mounting portion 42 of the pulley frame fixing device extends out of the mounting end of the mast, and the ear plate 50 is vertically mounted on the mounting portion 42 of the base plate 40. The ear plate 50 extends from the mounting portion 42 to the other end of the mast. The pulley frame is located between the two ear plates 50 and is connected to the pulley frame fixing device through the ear plate 50, so that the pulley frame, the pulley frame fixing device and the mast remain relatively fixed, which can prevent the pulley frame from shaking during the equipment transportation process and avoid damage to the pulley frame or the equipment.

[0034] Furthermore, a notch 412 extending from the first end 44 to the second end 45 is provided on the bottom plate 40, and the notch 412 separates the fixing portion 41 into two spaced connection portions 411, and the mounting holes 43 are provided on the connection portions 411, and the two connection portions 411 are symmetrically distributed relative to the center line of the bottom plate 40. By providing the notch 412 on the bottom plate 40, the weight and production cost of the bottom plate 40 can be reduced, and the mounting holes 43 are provided on the two connection portions 411, and the two connection portions 411 are fixed to the mounting end of the mast, and the ear plate 50 installed on the mounting portion 42 of the bottom plate 40 is fixed to the pulley frame, and the mounting portion 42 of the bottom plate 40 and the two connection portions 411 are arranged in a triangle, so that the force of the bottom plate 40 is distributed in a triangular shape, and has high stability, and the fixing effect on the pulley frame will not be reduced due to the opening of the notch 412.

[0035] Furthermore, in the direction from the first end 44 to the second end 45, the width of the notch 412 gradually decreases. At the same time, in the direction from the first end 44 to the second end 45, the width of the connecting portion 411 of the bottom plate 40 gradually increases, which can ensure that the connecting portion 411 of the bottom plate 40 and the mounting portion 42 of the bottom plate 40 have a high connection strength, and avoid the bottom plate 40 from being broken due to the involvement of the ear plate 50 on the mounting portion 42 because the width of the connecting portion 411 is too small. At the same time, in the direction from the connecting portion 411 to the second end 45, the width of the mounting portion 42 gradually decreases, which can further reduce the weight of the bottom plate 40 without reducing the structural strength of the bottom plate 40, saving production costs.

[0036] It should be noted that in this embodiment, there are two ear plates 50, which are parallel to each other and have coaxial connection holes 51 thereon. The connection holes 51 are aligned with the through holes provided on the pulley frame, and the pulley frame, the pulley frame fixing device and the mast can be fixed together by the connecting pieces passing through the connection holes 51 of the ear plates 50 and the through holes of the pulley frame, so that the pulley frame will not shake easily when the equipment is transported. It can be understood that the number and distribution orientation of the ear plates 50 can be adapted according to the structure of the pulley frame, and the number of the ear plates 50 can be multiple, and the multiple ear plates 50 are distributed at intervals on the bottom plate 40. In some embodiments, the ear plates 50 can be installed on the bottom plate 40 at an angle according to the structure of the pulley frame.

[0037] Furthermore, a pad 60 is installed on the ear plate 50. The pad 60 is annular and has a through hole. The diameter of the through hole is not less than the diameter of the connecting hole 51 of the ear plate 50. The through hole of the pad 60 is aligned with the connecting hole 51 of the ear plate 50. The pad 60 is arranged on one side of the ear plate 50. The ear plate 50 is distinguished by the pad 60 from two surfaces of the ear plate 50, one of which is connected to the pulley frame as an assembly surface. When installing the ear plate 50, the surface of the ear plate 50 without the pad 60 is facing the pulley frame for matching with the pulley frame and fixing the pulley frame.

[0038] The ear plate 50 and the bottom plate 40 in this embodiment are both steel plates, and the two are fixed together by welding. When the ear plate 50 is produced, burrs, flashes, etc. will appear. In order to ensure the stable assembly of the ear plate 50 and the pulley frame, the burrs, flashes, etc. need to be polished. Therefore, the two surfaces of the ear plate 50 are identified by the pad 60, and the surface of the ear plate 50 assembled with the pulley frame 20 is finely processed. It can be understood that in some embodiments, the ear plate 50 can also be installed on the bottom plate 40 through a fixing element. In these embodiments, the two ear plates 50 can be connected to each other through a connecting plate perpendicular to the two ear plates 50, the connecting plate is vertically connected to the bottom plate 40, and the ear plate 50 is vertically connected to the connecting plate, so that the ear plate 50 is parallel to the bottom plate 40, adapted to the structure in which the extension direction of the opening on the pulley frame is perpendicular to the bottom plate 40, and the ear plate 50 is installed on the bottom plate 40 by the fixing element passing through the connecting plate and the bottom plate 40.

[0039] To sum up, through the above-mentioned structural setting, the pulley frame fixing device provided in this embodiment can firmly fix the pulley frame on the mast after the power head is separated from the pulley frame, thereby preventing the pulley frame from shaking during the transportation of the equipment and damaging the pulley frame or the equipment.

[0040] like Figure 5 and Figure 6As shown, this embodiment also provides a rotary drilling rig, including a power head 30, a mast 10, a pulley frame 20 and the pulley frame fixing device described above. The power head 30 is arranged at the mounting end 11 of the mast 10 and can rotate relative to the mast 10. For details, please refer to Figure 2 The power head 30 is fixed to the mounting end 11 of the mast 10 through a pivot shaft 31, and can rotate around the pivot shaft 31, so that the power head 30 can rotate to the bottom of the mast 10 after being separated from the pulley frame 20. The pulley frame 20 is movably mounted on the mast 10 through a first steel wire rope 1 and a second steel wire rope 2 extending along the length direction of the mast 10, so that the state of the pulley frame 20 after being separated from the power head 30 is consistent with the working state. The pulley frame 20 includes a frame body 21 and an assembly portion 22 located at one end of the frame body 21. The frame body 21 of the pulley frame 20 is used to assemble the pulley 23. The assembly portion 22 is provided with an assembly hole 221. The axial direction of the assembly hole 221 is perpendicular to the axial direction of the pulley 23 and parallel to the axial direction of the connecting hole 51 on the pulley frame fixing device. The pulley frame fixing device is installed on the mounting end 11 of the mast 10 through the mounting hole 43 on the fixing portion 41 , and the pulley frame 20 is fixed to the pulley frame fixing device through the connecting hole 51 of the ear plate 50 and the assembly hole 221 of the pulley frame 20 .

[0041] When the equipment is transported, the pulley frame 20 is separated from the power head 30, and the power head 30 is rotated to the bottom of the mast 10. At this time, the bottom plate 40 of the pulley frame fixing device is fixed to the mounting end 11 of the mast 10 through the mounting hole 43 of the fixing part 41, specifically, the screw 80 is passed through the mounting hole 43 of the fixing part 41 to connect with the mounting end 11 of the mast 10, and the ear plate 50 of the pulley frame fixing device is connected to the assembly part 22 of the pulley frame 20 through the connecting hole 51 of the ear plate 50 and the assembly hole 221 of the assembly part 22, specifically: the two ear plates 50 on the bottom plate 40 are respectively located on both sides of the assembly part 22 of the pulley frame 20, and the connecting hole 51 of the ear plate 50 is aligned with the assembly hole 221 of the assembly part 22 of the pulley frame 20, and then the connecting shaft 70 is passed through the connecting hole 51 and the assembly hole 221, and the pulley frame fixing device, the pulley frame 20 and the mast 10 are fixed together through the ear plate 50 and the assembly part 22. During the equipment transportation process, the pulley frame 20 is kept fixed, and the posture of the pulley frame 20 is consistent with the working state. When the equipment is transported to the working position and needs to be put into use, the screw 80 connecting the pulley frame fixing device and the mast 10 and the connecting shaft 70 connecting the ear plate 50 and the assembly part 22 of the pulley frame 20 are removed, and then the pulley frame fixing device is removed, and the power head 30 is rotated to connect the power head 30 with the pulley frame 20, and the equipment can be quickly put into use.

[0042] Further, such as Figure 7As shown in , the power head 30 has a locking portion 32, and a locking hole 321 having the same diameter as the assembly hole 221 is formed on the locking portion 32. When the power head 30 rotates to fit the mounting end 11 of the mast 10, the power head 30 is connected to the pulley frame 20 through the locking hole 321 and the assembly hole 221. Specifically, one surface of the power head 30 has a first side edge 33 and a second side edge 34 opposite to each other. The power head 30 is connected to one end of the mast 10 through the first side edge 33 of the surface. The power head 30 can rotate around the first side edge 33 on the mast 10 (i.e., rotate around the pivot axis 31). The locking portion 32 is located on the second side edge 34 of the power head 30. When the power head 30 rotates to fit the mast 10, the locking portion 32 can be aligned with the assembly portion 22 of the pulley frame 20. The locking portion 32 includes two parallel vertical plates 322, and the locking holes 321 are opened on the two vertical plates 322. The spacing between the two vertical plates 322 is the same as the spacing between the two ear plates 50 of the pulley frame fixing device. The aperture of the locking hole 321 is the same as the aperture of the connecting hole 51 of the ear plate 50. When the locking portion 32 is aligned with the assembly portion 22 of the pulley frame 20, the two vertical plates 322 of the locking portion 32 are respectively located on both sides of the assembly portion 22 of the pulley frame 20, and the locking hole 321 is aligned with the assembly hole 221. A connecting shaft 70 is passed through the locking hole 321 and the assembly hole 221 to connect the power head 30 and the pulley frame 20 together.

[0043] This method allows a connecting shaft 70 of the same model size to be used in both the assembly of the power head 30 and the pulley frame 20 and the assembly of the pulley frame fixing device and the pulley frame 20. Only one pulley frame fixing device is added to achieve stable transportation of the pulley frame 20 without adding other parts. It has high versatility and the assembly is quick and efficient when the power head 30 is transported and the use status is changed.

[0044] In summary, the rotary drilling rig and the pulley frame fixing device thereof provided in this embodiment can keep the pulley frame 20 firmly fixed when the equipment is transported, and the equipment can switch between the transport state and the working state quickly without adding many parts.

[0045] This embodiment also provides a pulley frame fixing method, comprising the following steps: S10, when the rotary drilling rig works normally, the power head 30 and the pulley frame 20 are fixedly connected via the locking portion 32 and the assembly portion 22.

[0046] S20, when the rotary drilling rig stops working and operates, the power head 30 is disconnected from the pulley frame 20 and the power head 30 rotates around the mast 10, so that the power head 30 is located below the mast 10.

[0047] S30, the fixing portion 41 of the bottom plate 40 of the pulley frame 20 fixing device is fixedly connected to the mast 10 through the mounting hole 43, and is fixedly connected to the pulley frame 20 through the ear plate 50 on the mounting portion 42 of the bottom plate 40.

[0048] S40, after the rotary drilling rig is operated to the work site, the pulley frame 20 fixing device is removed from the mast 10 and the pulley frame 20 fixing device is detached from the pulley frame 20, the power head 30 is flipped to be aligned with the mast 10, and the power head 30 and the pulley frame 20 are fixedly connected via the locking portion 32 and the assembly portion 22.

[0049] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A pulley frame fixing device, characterized in that: The invention comprises a base plate (40) and an ear plate (50), wherein the base plate (40) comprises a mounting portion (42) and a fixing portion (41), wherein the fixing portion (41) is used to fix the base plate (40) to the mast (10), and the ear plate (50) is mounted on the mounting portion (42) of the base plate (40). A connecting hole (51) is provided on the ear plate (50), and the connecting hole (51) is used to connect to a pulley frame.

2. The pulley frame fixing device according to claim 1, characterized in that: There are a plurality of ear plates (50), and the plurality of ear plates (50) are distributed at intervals on the bottom plate (40), and the pulley frame is located between the ear plates (50).

3. The pulley frame fixing device according to claim 1, characterized in that: The bottom plate (40) is provided with a notch (412), the notch (412) divides the fixing portion (41) into two spaced-apart connecting portions (411), the connecting portions (411) are provided with mounting holes (43), and the bottom plate (40) is fixed to the mast via the mounting holes (43).

4. The pulley frame fixing device according to claim 3, characterized in that: The bottom plate (40) has a first end (44) and a second end (45) opposite to each other, the fixing portion (41) is located at the first end (44), the mounting portion (42) is located at the second end (45), and the width of the notch (412) gradually decreases in the direction from the first end (44) to the second end (45).

5. The pulley frame fixing device according to claim 4, characterized in that: In the direction from the connecting portion (411) to the second end (45), the width of the bottom plate (40) gradually decreases.

6. The pulley frame fixing device according to claim 3, characterized in that: The two connection portions (411) are symmetrically distributed relative to the midline of the bottom plate (40).

7. A rotary drilling rig, characterized in that: The rotary drilling rig comprises a power head (30), a mast (10), a pulley frame (20), and a pulley frame fixing device according to any one of claims 1 to 6; the power head (30) is rotatably connected to the mounting end (11) of the mast (10); the pulley frame (20) is connected to the power head (30) when the rotary drilling rig is working, and is connected to the pulley frame fixing device when the rotary drilling rig is transported.

8. The rotary drilling rig according to claim 7, characterized in that: The pulley frame (20) is movably mounted on the mast (10) via a steel rope, one end of the pulley frame (20) has an assembly portion (22), the assembly portion (22) is provided with an assembly hole (221), and the pulley frame fixing device and the pulley frame (20) are connected to the assembly hole (221) of the pulley frame (20) via the connection hole (51) of the ear plate (50).

9. The rotary drilling rig according to claim 7, characterized in that: The power head (30) has a locking portion (32), and a locking hole (321) is formed on the locking portion (32). When the power head (30) is rotated to fit the mounting end (11) of the mast (10), the power head (30) is connected to the pulley frame (20) via the locking hole (321) and the connecting hole (51).

10. A method for fixing a pulley frame, characterized in that: The following steps are involved: S10, when the rotary drilling rig is working normally, the power head is fixedly connected to the pulley frame through the locking part and the assembly part; S20, when the rotary drilling rig stops working and operates, the power head is disconnected from the pulley frame and the power head rotates around the mast so that the power head is located below the mast; S30, fixing the fixing portion of the bottom plate of the pulley frame fixing device to the mast through the mounting hole, and fixing the lug on the mounting portion of the bottom plate to the pulley frame; S40, after the rotary drilling rig is operated to the work site, the pulley frame fixing device is removed from the mast and the pulley frame fixing device is separated from the pulley frame, the power head is turned over to be aligned with the mast, and the power head and the pulley frame are fixedly connected through the locking part and the assembly part.

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