Cathead and rotary drilling rig

Abstract

The cathead comprises a pulley yoke, a first pulley and a second pulley, the pulley yoke is provided with a first mounting position and a second mounting position, the first mounting position is used for mounting the first pulley, and the second mounting position is used for mounting the second pulley. The first pulley and the second pulley are rotationally connected with the pulley yoke, and the pulley yoke is integrally formed. According to the cathead, the pulley yoke is integrally welded and formed, so that vibration generated by a shaft hole fit clearance in the mounting process of the pulley yoke is reduced, and the service life of the pulley yoke is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drilling rigs, in particular to an anchor hanging frame and a rotary drilling rig. Background Art

[0002] As one of the most important construction machinery in engineering construction, the rotary drilling rig has a harsh working environment and complex working conditions. The rotary drilling rig is equipped with a power head, a load-bearing drill rod and a fixed front main winch through a mast, among which the anchor frame is an important component installed on the mast.

[0003] In the prior art, the anchor frame includes a main pulley frame, a front pulley frame and a rear pulley frame, and the front pulley frame and the rear pulley frame are both mounted on the main pulley frame by bolts or pins. The front pulley frame is mounted on the front pulley frame, and the rear pulley frame is mounted on the rear pulley frame. Because the front pulley frame and the rear pulley frame are both mounted on the main pulley frame by assembly, mounting holes need to be opened on the main pulley frame. Then, during the working process, the gap between the pin and the diameter of the mounting hole at the connection between the front pulley frame and the main pulley frame, and at the connection between the rear pulley frame and the main pulley frame, will vibrate, causing the entire structure to crack, thereby affecting the structural strength and service life.

[0004] Therefore, it is necessary for those skilled in the art to design an anchor frame that can improve the structural strength and service life. Utility Model Content

[0005] In view of this, an object of the utility model is to provide an anchor frame with higher structural strength and longer service life.

[0006] The utility model provides an anchor frame, comprising: a pulley frame, a first pulley and a second pulley, the pulley frame is provided with a first installation position and a second installation position, the first installation position is used to install the first pulley, the second installation position is used to install the second pulley, and the first pulley and the second pulley are both rotatably connected to the pulley frame, and the pulley frame is welded in one piece.

[0007] In one embodiment, the anchor frame also includes a pin shaft, and the first mounting position includes a first slide groove and at least two card slots, each of the card slots is connected to the first slide groove, and the pin shaft slides along the first slide groove to engage with any of the card slots to achieve the installation of the first pulley at different positions.

[0008] In one embodiment, the first mounting position includes a plurality of first mounting holes, and the second mounting position includes a plurality of second mounting holes. By installing the first pulley in different first mounting holes and installing the second pulley in different second mounting holes, different drilling diameters are corresponded.

[0009] In one embodiment, the center of the line connecting the first pulley and the second pulley is always on the axis of the mast.

[0010] In one embodiment, the pulley frame includes a vertical plate and a bottom plate, the vertical plate is fixedly connected to the bottom plate, the bottom plate is used to support the vertical plate, the vertical plate and the bottom plate are welded together, and the vertical plate is provided with a first installation position and a second installation position.

[0011] In one embodiment, there are two vertical plates, and both vertical plates are fixedly connected to the bottom plate.

[0012] In one embodiment, the two vertical plates are arranged at an interval, and the first pulley and the second pulley are both located between the two vertical plates.

[0013] In one embodiment, the vertical plate includes a first end and a second end relative to each other, the first end is used to install the first pulley, the second end is used to install the second pulley, and the distance between the first end and the base plate is greater than the distance between the second end and the base plate.

[0014] In one embodiment, a lightening hole is opened in the middle of the vertical plate, and the lightening hole is arranged at an interval with the mounting hole.

[0015] Another embodiment of the present application further provides a rotary drilling rig, comprising the anchor frame as described above.

[0016] In the anchor frame provided by the embodiment of the utility model, there is only one pulley frame, and then a mounting hole is opened on the pulley frame, and the first pulley and the second pulley are both installed on the pulley frame through the mounting hole and connected with the pulley frame pin. The anchor frame in the present application has only one pulley frame, and the pulley frame is a welded structure. Compared with the assembled structure, no additional shaft holes are required to cooperate with the installation of the remaining pulley frames, which reduces vibration and improves structural strength and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, 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 utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The utility model is a schematic diagram of the structure of an anchor frame according to an embodiment of the present invention.

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the middle pulley frame.

[0020] Figure 3 This is a schematic structural diagram of an anchor frame according to another embodiment of the utility model.

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0022] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", "connection" 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.

[0024] 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 utility model product is usually placed when in use. 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 utility model.

[0025] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0026] 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.

[0027] Please refer to Figure 1 and Figure 2 , which shows an anchor frame provided in an embodiment of the utility model, including: a pulley frame 1, a first pulley 2 and a second pulley 3, the pulley frame 1 is provided with a first mounting position 11 and a second mounting position 14, the first mounting position 11 is used to install the first pulley 2, the second mounting position 14 is used to install the second pulley 3, and the first pulley 2 and the second pulley 3 are both rotatably connected to the pulley frame 1, and the pulley frame 1 is welded as an integral body.

[0028] like Figure 1 As shown, the pulley frame 1 is preferably in a flat plate shape. The shape of the pulley frame 1 is similar to a triangular plate, and the three corners are ground flat, thereby increasing the contact area and reducing the pressure when touching. Further, it is also convenient to install the pulley frame 1 with other components.

[0029] Specifically, the anchor frame is usually installed on the mast. The first corner of the pulley frame 1 is used to be installed on the mast, so it needs to be ground so that the pulley frame 1 can fit the mast. The second corner of the pulley frame 1 is provided with a first installation position 11, and the third corner is provided with a second installation position 14. Then the first pulley 2 is installed through the first installation position 11 on the second corner, and the second pulley 3 is installed through the second installation position 14 on the third corner.

[0030] The first pulley 2 and the second pulley 3 need to rotate during operation, so the first pulley 2 and the second pulley 3 need to be rotatably connected to the pulley frame 1, and the connection method is preferably a pin connection. Therefore, a through hole is also required to be opened in the center of the first pulley 2 and the second pulley 3, and then the first pulley 2 is installed on the pulley frame 1 by passing the first pin through the first installation position 11 and the center of the first pulley 2 at the same time, and then the second pulley 3 is installed on another second installation position 14 in the same way by using the second pin.

[0031] In this embodiment, the pulley frame 1 is welded as one piece, so the first mounting position 11 and the second mounting position 14 for mounting the first pulley 2 and the second pulley 3 are both provided on the pulley frame 1. When the first pulley 2 and the second pulley 3 are in operation, the force exerted on the first pulley 2 and the second pulley 3 will be transmitted to the pulley frame 1. Because the pulley frame 1 is welded as one piece, the pulley frame 1 will not generate vibration between the pulley frames when subjected to force. In addition, the pulley frame 1 welded as one piece does not require additional mounting holes to be provided to install the pulley frame, which reduces the vibration caused by the clearance of the shaft hole during installation, thereby improving the service life and structural strength of the pulley frame 1.

[0032] In one embodiment, the anchor frame also includes a pin shaft 4, the first mounting position 11 includes a first slide groove 112 and at least two card slots 113, each card slot 113 is connected to the first slide groove 112, the pin shaft 4 is used to install the first pulley 2, and the pin shaft 4 slides along the first slide groove 112 to engage with any card slot 113.

[0033] Please refer to Figure 3 and Figure 4, the first slide groove 112 is preferably rectangular, and the four corners are rounded. Because the first pulley 2 is installed through the pin 4, the slot 113 is preferably arc-shaped to engage the pin 4. And in order to facilitate the pin 4 to slide out of the slot 113 and enter the next slot 113, the slot 113 is preferably semicircular, which ensures that the pin can enter and exit the slot 113 normally. The larger the contact surface between the slot 113 and the pin, the better the limiting effect of the slot 113 on the pin. When the pin 4 passes through the first pulley 2 and engages with one of the slots 113, it is only necessary to move the pin 4 upward into the first slide groove 112, and the pin 4 can slide along the first slide groove 112.

[0034] The first pulley 2 is sleeved on the pin 4, so when the pin 4 slides in the first slide groove 112, it drives the first pulley 2 to slide together. Because each slot 113 is connected to the first slide groove 112, when the pin 4 slides in the first slide groove 112, it can choose to enter any slot 113 in the first slide groove 112 and engage with the slot 113. Thereby driving the first pulley 2 to adjust its relative position with the second pulley 3 to adapt to drill rods of different diameters. In this embodiment, the spacing between the first pulley 2 and the second pulley 3 is adjusted by sliding the pin in the first slide groove 112. This adjustment method does not require the pin 4 to be removed from the first pulley 2 and then installed, which is more convenient. Similarly, the second pulley 3 can be adjusted in the same way.

[0035] In one embodiment, the first mounting position 11 includes a plurality of first mounting holes 111, and the second mounting position 14 includes a plurality of second mounting holes 141. By mounting the first pulley 2 in different first mounting holes 111 and the second pulley 3 in different second mounting holes 141, different borehole diameters can be obtained. In one embodiment, the center of the line connecting the first pulley 2 and the second pulley 3 is always on the axis of the mast.

[0036] Please refer to Figure 2 In this embodiment, the pulley frame 1 has two first mounting holes 111 on the right side and two second mounting holes 141 on the left side. The first pulley 2 and the second pulley 3 are combined in different mounting positions to adapt to various drilling diameters.

[0037] The plurality of first mounting holes 111 and the plurality of second mounting holes 141 correspond to each other, firstly in terms of quantity, that is, the number of the first mounting holes 111 is equal to the number of the second mounting holes 141. In this embodiment, there are two first mounting holes 111 and two second mounting holes 141. Then, they can be divided into a first group and a second group, each group including a first mounting hole 111 and a second mounting hole 141. And the first mounting holes 111 and the second mounting holes 141 in each group are on the same circumference, and the circumferences of the first group and the second group are concentric.

[0038] Therefore, after the first pulley 2 and the second pulley 3 are installed, the center of the line connecting the first pulley 2 and the second pulley 3 is always on the axis of the mast, thereby reducing the torque on the pulley frame 1. In this embodiment, the spacing between the first pulley 2 and the second pulley 3 is adjusted by opening a plurality of first mounting holes 111 and a plurality of second mounting holes 141. When the first pulley 2 and the second pulley 3 are installed through a pin shaft, the pin shaft is fully covered by the first mounting hole 111 or the second mounting hole 141, making the installation more stable.

[0039] In one embodiment, the pulley frame 1 includes a vertical plate 12 and a bottom plate 13, the vertical plate 12 is fixedly connected to the bottom plate 13, the bottom plate 13 is used to receive the vertical plate 12, the vertical plate 12 and the bottom plate 13 are integrally welded, and the vertical plate 12 is provided with a first mounting position 11 and a second mounting position 14. In one embodiment, there are two vertical plates 12, and both vertical plates 12 are fixedly connected to the bottom plate 13.

[0040] Please refer to Figure 2 , wherein the vertical plate 12 is preferably a triangular plate, the first mounting position 11 and the second mounting position 14 are both provided on the vertical plate 12, and the first pulley 2 and the second pulley 3 are mounted through the vertical plate 12. The vertical plate 12 is mounted on the bottom plate 13, and then mounted on the mast through the bottom plate 13. The vertical plate 12 is fixedly connected to the bottom plate 13, and the connection method is preferably welding, so as to improve the overall structural strength.

[0041] Specifically, there are two vertical plates 12. After the two vertical plates 12 are fixedly mounted on the bottom plate 13, the first mounting positions 11 on the two vertical plates 12 correspond to each other, so that the pin can smoothly pass through the two vertical plates 12. In this embodiment, the first pulley 2 and the second pulley 3 are installed through the two vertical plates 12, which can provide more supporting force and make the installation more stable.

[0042] In one embodiment, the two vertical plates 12 are arranged at intervals, and the first pulley 2 and the second pulley 3 are both located between the two vertical plates 12. Figure 1 As shown, when the first pulley 2 is installed by the pin shaft, the pin shaft first passes through the first vertical plate 12, then passes through the first pulley 2, and finally passes through the second vertical plate 12. At this time, the first pulley 2 is located in the middle of the pin shaft, and the two vertical plates 12 are located on both sides of the first pulley 2. Preferably, the second vertical plates 12 are symmetrically arranged on both sides of the first pulley 2, thereby providing symmetrical support force to the pin shaft, making the installation of the first pulley 2 more stable. And the first pulley 2 is arranged between the two vertical plates 12, and the first pulley 2 can also be protected by the two vertical plates 12. Similarly, the second pulley 3 is also the same.

[0043] In one embodiment, the vertical plate 12 includes a first end 121 and a second end 122 opposite to each other, the first end 121 is used to install the first pulley 2, the second end 122 is used to install the second pulley 3, and the distance between the first end 121 and the bottom plate 13 is greater than the distance between the second end 122 and the bottom plate 13. In one embodiment, a lightening hole is opened in the middle of the vertical plate 12, and the lightening hole is arranged at an interval from the first mounting position 11.

[0044] like Figure 2 As shown, the vertical plate 12 is preferably a triangular plate, the right side is the first end 121, and the left side is the second end 122. The first end 121 is provided with a first mounting position 11, the second end 122 is provided with a second mounting position 14, and the first end 121 is higher than the second end 122. When the anchor frame needs to be folded during transportation, the vertical plate 12 is designed with one side high and the other side low to save space. At the same time, a lightening hole is also provided in the middle of the vertical plate 12 where no mounting hole is provided, that is, the vertical plate 12 is hollowed out. On the premise of ensuring that the pulley frame 1 meets the structural strength requirements, materials are saved as much as possible.

[0045] The utility model also provides a rotary drilling rig, comprising the above-mentioned anchor frame. Because the pulley frame 1 in the anchor frame is welded in one piece, the gap caused by the shaft hole matching when assembling the pulley frame is reduced, and the overall structural rigidity and vibration resistance are improved. And through the designed first slide groove 112, it is easier to adjust the distance between the first pulley 2 and the second pulley 3, so the rotary drilling rig using the anchor frame can improve the service life and work efficiency.

[0046] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the attached claims.

Claims

1. An anchor frame, characterized in that: include: A pulley frame (1), a first pulley (2) and a second pulley (3), wherein the pulley frame (1) is provided with a first mounting position (11) and a second mounting position (14), wherein the first mounting position (11) is used for mounting the first pulley (2), and the second mounting position (14) is used for mounting the second pulley (3), and the first pulley (2) and the second pulley (3) are both rotatably connected to the pulley frame (1), and the pulley frame (1) is integrally formed.

2. The anchor frame according to claim 1, characterized in that: The anchor frame also includes a pin shaft (4), the first installation position (11) includes a first slide groove (112) and at least two clamping grooves (113), each of the clamping grooves (113) is connected to the first slide groove (112), and the pin shaft (4) slides along the first slide groove (112) to engage with any of the clamping grooves (113), thereby realizing the installation of the first pulley (2) at different positions.

3. The anchor frame according to claim 1, characterized in that: The first mounting position (11) includes a plurality of first mounting holes (111), and the second mounting position (14) includes a plurality of second mounting holes (141). By mounting the first pulley (2) in different first mounting holes (111) and mounting the second pulley (3) in different second mounting holes (141), different drilling diameters are obtained.

4. The anchor frame according to claim 3, characterized in that: The center of the line connecting the first pulley (2) and the second pulley (3) is always on the axis of the mast.

5. The anchor frame according to claim 1, characterized in that: The pulley frame (1) comprises a vertical plate (12) and a bottom plate (13), wherein the vertical plate (12) is fixedly connected to the bottom plate (13), the bottom plate (13) is used to receive the vertical plate (12), the vertical plate (12) and the bottom plate (13) are integrally welded, and the vertical plate (12) is provided with a first mounting position (11) and a second mounting position (14).

6. The anchor bracket according to claim 5, characterized in that: There are two vertical plates (12), and both vertical plates (12) are fixedly connected to the bottom plate (13).

7. The anchor bracket according to claim 6, characterized in that: The two vertical plates (12) are arranged at intervals, and the first pulley (2) and the second pulley (3) are both located between the two vertical plates (12).

8. The anchor frame according to claim 5, characterized in that: The vertical plate (12) comprises a first end (121) and a second end (122) opposite to each other, the first end (121) being used for mounting the first pulley (2), the second end (122) being used for mounting the second pulley (3), and the distance between the first end (121) and the bottom plate (13) being greater than the distance between the second end (122) and the bottom plate (13).

9. The anchor frame according to claim 5, characterized in that: A lightening hole is provided in the middle of the vertical plate (12), and the lightening hole is arranged at an interval from the first mounting position (11).

10. A rotary drilling rig, characterized in that: The invention comprises the anchor frame as described in any one of claims 1 to 9.

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