A device for making up and breaking out a joint of a tubular string

Abstract

This utility model relates to a top-and-bottom coupling device for iron drills, comprising a support structure. The support structure includes an upper plate assembly, a lower plate assembly, and a drive assembly. The support structure, the upper plate assembly, and the lower plate assembly are coaxially connected to form a working cavity. A first drill rod and a second drill rod, which are coaxial, can pass through the working cavity. The upper plate assembly and the lower plate assembly are used to clamp the first drill rod and the second drill rod, respectively. The drive assembly is meshed with the upper plate assembly to drive the upper plate assembly to rotate relative to the lower plate assembly. In this utility model, the drive assembly and the upper plate assembly are meshed. By increasing the rotation angle of the upper plate assembly, the first drill rod can be rotated to a larger angle during coupling or uncoupling, simplifying operation and shortening operation time.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment for engineering or geological drilling, specifically to a detachment device for iron drillers. Background Technology

[0002] During drilling operations, the drill pipes of the drilling tools are frequently engaged and disengaged. Currently, the disengagement of drilling tools is usually carried out using hydraulic tongs, hydraulic anchor heads, or iron drills. Among them, the use of hydraulic tongs or hydraulic anchor heads requires two or more people to work together, which is labor-intensive, inconvenient to operate, and poses certain dangers. Iron drills are driven by multiple cylinders. Although iron drills have a certain degree of automation, their complex structure, small and fixed rotation angle, and the need for multiple clamping and loosening operations are required to complete one engagement or disengagement. This operation is cumbersome, time-consuming, and labor-intensive. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a simple structure, easy operation and larger rotation angle iron driller's top and bottom buckle device.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A top and bottom buckle device for iron drillers includes a support structure. The support structure is provided with an upper plate assembly, a lower plate assembly, and a drive assembly. The support structure, the upper plate assembly, and the lower plate assembly are coaxially connected to form a working cavity. A first drill rod and a second drill rod with a coaxial axis are passed through the working cavity. The upper plate assembly and the lower plate assembly are respectively used to clamp the first drill rod and the second drill rod. The drive assembly is driven by the upper plate assembly to drive the upper plate assembly to rotate relative to the lower plate assembly.

[0005] The beneficial effects of this utility model are: the drive assembly and the upper plate assembly are connected by meshing. By increasing the rotation angle of the upper plate assembly, the first drill rod can be rotated at a larger angle when engaging or disengaging, which simplifies the operation and shortens the operation time.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the upper plate assembly includes two axially spaced and fixed upper plate retaining rings, at least one of which is slidably engaged with the support structure. A rotary gear ring is stacked between the two upper plate retaining rings, with the gear portion of the rotary gear ring facing away from the working cavity. The drive assembly includes a drive motor, the output shaft of which is connected to the rotary gear ring via a transmission gear set and is used to drive the upper plate assembly to rotate.

[0008] The beneficial effects of adopting the above-mentioned further solution are: by connecting the drive motor with the rotary gear ring, controlling the drive motor to rotate forward, reverse, or reset, a large-angle rotation of the upper plate assembly can be achieved, which has the advantages of simple structure and convenient operation.

[0009] Furthermore, the rotary gear ring is an incomplete gear ring, and the rotary gear ring is fixed between two upper plate retaining rings by multiple upper plate screws, which are arranged around the outside of the working cavity in a circumferential direction.

[0010] The beneficial effect of adopting the above-mentioned further solution is that the rotary gear ring is fixed in the upper plate assembly by multiple upper plate screws. The upper plate screws can not only play a fixing role, but also provide power transmission during the rotation of the upper plate assembly.

[0011] Furthermore, the transmission gear set includes a motor gear and two intermediate gears. The motor gear is fixedly connected to the output shaft of the drive motor, and the two intermediate gears are symmetrically distributed on both sides of the motor gear and rotatably mounted on the support structure. Each intermediate gear is meshed with the motor gear and the rotary gear ring, respectively.

[0012] The advantage of adopting the above-mentioned further solution is that the motor gear is simultaneously engaged with the rotating gear ring through two intermediate gears, which helps to ensure that the rotating gear ring is subjected to a stable and balanced driving force.

[0013] Furthermore, the upper plate assembly also includes a rotary table, which is fixed to the surface of one of the upper plate retaining rings. The rotary table is provided with a rotation limit block, and the support structure is provided with a rotation stop, which is located on the rotation trajectory of the rotation limit block.

[0014] The beneficial effect of adopting the above-mentioned further solution is that by setting a rotation limit block on the turntable, and by having the rotation limit block cooperate with the rotation stop of the support structure, the rotation angle of the upper plate assembly can be limited, and the upper plate assembly can also be used to indicate that the rotation of the upper plate assembly has reached the correct position.

[0015] Furthermore, the upper plate assembly also includes at least one pair of upper plate cylinders. Each pair of upper plate cylinders is radially spaced between two upper plate retaining rings along the working chamber. Each upper plate cylinder is connected to an upper cylinder die for contacting the first drill pipe. The upper cylinder die is driven by the upper plate cylinder to reciprocate radially along the working chamber.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the clamping of the first drill rod is completed by the upper cylinder and the upper cylinder die, which has the advantages of rapid action and high reliability.

[0017] Furthermore, at least one upper plate retaining ring surface is provided with a cylinder positioning groove, and the upper plate cylinder is installed in the cylinder positioning groove.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the cylinder positioning groove can not only provide space for the upper plate cylinder to be installed in a limited position, but also play a role in transmitting rotational torque, so that the upper plate cylinder can rotate together with the upper plate assembly.

[0019] Furthermore, the support structure, the upper plate assembly, and the lower plate assembly are provided with a notch on the same side that connects to the working cavity, and the inner diameter of the notch is greater than or equal to the diameter of the working cavity.

[0020] The advantage of adopting the above-mentioned further solution is that by setting the notch on the same side of the support structure, the upper plate assembly and the lower plate assembly, it is convenient to introduce the drill bit into the working chamber.

[0021] Furthermore, the lower plate assembly includes two axially spaced lower plate retaining rings, and at least one pair of lower plate cylinders are provided between the two lower plate retaining rings. Each pair of lower plate cylinders is radially spaced and opposite to each other along the working chamber. Each lower plate cylinder is connected to a lower cylinder die for contacting the second drill pipe. Guide slopes are formed on both sides of the notch of the upper plate retaining ring and the notch of the lower plate retaining ring.

[0022] The advantages of adopting the above-mentioned further solution are that, compared with the upper plate assembly, the lower plate assembly has a simpler structure, which is conducive to simplifying the structure and reducing costs; at the same time, by forming guide slopes on both sides of the notches of the upper plate retaining ring and the lower plate retaining ring, it is more convenient to introduce the drill bit into the working chamber.

[0023] Furthermore, the support structure includes an upper plate slip ring, an upper plate slide block, and a lower plate slide block, all of which are annular. The upper plate slip ring, the upper plate slide block, and the lower plate slide block are arranged alternately from top to bottom. The upper plate assembly is rotatably disposed between the upper plate slip ring and the upper plate slide block, and the lower plate assembly is disposed between the upper plate slide block and the lower plate slide block. The drive assembly is installed through the upper plate slip ring and / or the upper plate slide block and is adjacent to the upper plate assembly. The upper plate slip ring, the upper plate slide block, and the lower plate slide block have a notch on the same side that communicates with the working cavity, and the notch faces away from the drive assembly.

[0024] The beneficial effect of adopting the above-mentioned further solution is that the support structure has an upper plate slip ring, an upper plate slide block and a lower plate slide block arranged at intervals, which can provide relatively independent installation space for the upper plate assembly and the lower plate assembly and prevent mutual interference between components. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the iron drill undock device of this utility model in its initial state;

[0026] Figure 2 This is a schematic diagram of the clockwise rotation structure of the iron drill undock device of this utility model;

[0027] Figure 3This is a schematic diagram of the counterclockwise rotation structure of the iron drill undock device of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the drive assembly and the upper disk assembly in this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the lower plate assembly in this utility model;

[0030] Figure 6 This is a schematic diagram showing the fit between the drive gear, intermediate gear, and rotary gear ring in this utility model.

[0031] Figure 7 This is a schematic diagram of the upper disc retaining ring in this utility model;

[0032] Figure 8 This is a schematic diagram of the rotary table in this utility model;

[0033] Figure 9 This is a schematic diagram of the supporting structure in this utility model.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1. Support structure; 11. Upper plate slip ring; 111. Rotation stop; 12. Upper plate slide; 13. Lower plate slide; 14. Mounting base; 15. Large through hole; 16. Small through hole; 2. Upper plate assembly; 21. Upper plate retaining ring; 22. Rotation gear ring; 23. Upper plate screw; 24. Rotary plate; 241. Rotation limit block; 242. Clearance groove; 25. Upper plate cylinder; 26. Upper cylinder die; 3. Lower plate assembly; 31. Lower plate retaining ring; 32. Lower plate screw; 33. Lower plate cylinder; 34. Lower cylinder die; 4. Drive assembly; 41. Drive motor; 42. Motor gear; 43. Intermediate gear; 44. Fixing pin; 5. Cylinder positioning groove; 6. Notch; 7. Guide slope; 81. First drill rod; 82. Second drill rod. Detailed Implementation

[0036] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0037] Example 1

[0038] like Figure 1-3As shown, a jacking / unjacking device for iron drills includes a support structure 1. The support structure 1 has an upper plate assembly 2, a lower plate assembly 3, and a drive assembly 4. The support structure 1, the upper plate assembly 2, and the lower plate assembly 3 are coaxially connected to form a working cavity. A first drill rod 81 and a second drill rod 82 with a coaxial axis can pass through the working cavity. The upper plate assembly 2 and the lower plate assembly 3 are respectively used to clamp the first drill rod 81 and the second drill rod 82. The drive assembly 4 is driven by the upper plate assembly 2 to drive the upper plate assembly 2 to rotate relative to the lower plate assembly 3, so that the first drill rod 81 is driven to rotate relative to the second drill rod 82 to complete the unjacking or jacking.

[0039] In this embodiment, the drive assembly 4 and the upper plate assembly 2 are connected by transmission. By increasing the rotation angle of the upper plate assembly 2, the first drill rod 81 can rotate to a larger angle when engaging or disengaging, which simplifies the operation and shortens the operation time.

[0040] In this embodiment, the support structure 1, upper plate assembly 2, and lower plate assembly 3 all adopt an annular structure. The upper plate assembly 2 is slidably assembled on the upper part of the support structure 1, and the lower plate assembly 3 is preferably fixedly disposed on the lower part of the support structure 1. The hollow areas of the upper plate assembly 2, the support structure 1, and the lower plate assembly 3 are axially connected to form a working cavity. The drill bit is disposed through the working cavity along the axial direction. The drill bit includes a coaxial first drill rod 81 and a coaxial second drill rod 82. In the working cavity, the first drill rod 81 corresponds to the hollow area of ​​the upper plate assembly 2. The upper plate assembly 2 can be driven to clamp or release the first drill rod 81. The second drill rod 82 corresponds to the hollow area of ​​the lower plate assembly 3. In the empty area, the lower plate assembly 3 can clamp or release the second drill rod 82; the support structure 1 is fixedly equipped with a drive assembly 4, which is adjacent to the upper plate assembly 2 and is connected to the upper plate assembly 2 in a transmission manner. Preferably, the drive assembly 4 is engaged with the outer circumference of the upper plate assembly 2. After the upper plate assembly 2 and the lower plate assembly 3 clamp the first drill rod 81 and the second drill rod 82 respectively, the drive assembly 4 drives the upper plate assembly 2 to rotate relative to the lower plate assembly 3. That is, the upper plate assembly 2 rotates around the working cavity, so that the first drill rod 81 can be driven by the upper plate assembly 2 to rotate relative to the second drill rod 82, thereby completing the uncoupling or coupling.

[0041] Preferred, such as Figure 2 As shown, drive assembly 4 drives upper plate assembly 2 to rotate clockwise to complete the upper locking, as... Figure 3 As shown, the drive component 4 drives the upper plate component 2 to rotate counterclockwise to complete the unhooking. The upper plate component 2 can rotate clockwise or counterclockwise by an angle greater than 180°. The rotation angle of the upper plate component 2 is preset according to actual needs. This can reduce the number of operation steps when fastening or unhooking. Of course, the upper plate component 2 can also be used to fasten by rotating counterclockwise and unhooking by rotating clockwise.

[0042] Example 2

[0043] like Figure 1-4 As shown, based on Embodiment 1, in the iron drill upper shackle device of this embodiment, the upper plate assembly 2 includes two axially spaced upper plate retaining rings 21, at least one upper plate retaining ring 21 is slidably engaged with the support structure 1, and a rotary gear ring 22 is stacked between the two upper plate retaining rings 21. The gear portion of the rotary gear ring 22 faces away from the working cavity. The drive assembly 4 includes a drive motor 41, and the output shaft of the drive motor 41 is meshed with the rotary gear ring 22 through a transmission gear set to drive the upper plate assembly 2 to rotate.

[0044] In this embodiment, the drive motor 41 is meshed with the rotary gear ring 22. By controlling the drive motor 41 to rotate forward, reverse, or reset, the large-angle rotation of the upper plate assembly 2 can be achieved, which has the advantages of simple structure and convenient operation.

[0045] In this embodiment, the upper plate assembly 2 includes two upper plate retaining rings 21 that are axially spaced and opposite to each other. The two upper plate retaining rings 21 are fixedly connected, and at least one upper plate retaining ring 21 is in sliding contact with the support structure 1. Figure 1-4 In section 7, the upper plate retaining ring 21 located below slides in contact with the support structure 1. A rotary gear ring 22 is stacked between the two upper plate retaining rings 21, wherein the gear portion of the rotary gear ring 22 faces away from the working cavity. The drive assembly 4 includes a drive motor 41, and the output shaft of the drive motor 41 is meshed with the rotary gear ring 22 through a transmission gear set to drive the upper plate assembly 2 to rotate. Preferably, the output shaft of the drive motor 41 is arranged in the vertical direction, and the transmission gear set includes at least two meshing gears, at least one gear is meshed with the rotary gear ring 22, and at least another gear is connected to the output shaft of the drive motor 41.

[0046] Preferably, the outer circumferential wall of the upper plate retaining ring 21 is slidably engaged with the support structure 1. That is, the support structure 1 is provided with a circular groove that can constrain the rotation trajectory of the upper plate retaining ring 21, and the upper plate assembly 2 is rotatably assembled in the circular groove. Of course, as another embodiment, the upper surface or lower surface of one of the upper plate retaining rings 21 can also be slidably engaged with the support structure 1. For example, the bottom surface of the upper plate assembly 2 and the surface of the support structure 1 can also restrict the rotation trajectory through a groove and a rail with a concave-convex fit.

[0047] Example 3

[0048] Based on Example 2, in the iron driller's upper unhooking device of this example, such as Figure 4 , 6As shown, the rotary gear ring 22 in the upper plate assembly 2 is an incomplete gear ring. The rotary gear ring 22 is fixed between two upper plate retaining rings 21 by multiple upper plate screws 23. The multiple upper plate screws 23 are arranged around the outside of the working cavity in the circumferential direction.

[0049] The beneficial effect of adopting the above-mentioned further solution is that the rotary gear ring 22 is fixed in the upper plate assembly 2 by a plurality of upper plate screws 23. The upper plate screws 23 can not only play a fixing role, but also provide power transmission during the rotation of the upper plate assembly 2.

[0050] Specifically, such as Figure 6 As shown, the rotary gear ring 22 is an incomplete gear ring with a certain thickness, that is, the rotary gear ring 22 is a fan-shaped outer gear ring. The outer arc-shaped sidewall of the rotary gear ring 22 is provided with a gear section for meshing with the transmission gear set. The inner arc-shaped sidewall of the rotary gear ring 22 faces the working cavity. Preferably, in the radial direction of the working cavity, there is a gap between the inner arc-shaped sidewall of the rotary gear ring 22 and the first drill rod 81, so as to avoid the rotary gear ring 22 contacting the first drill rod 81 during rotation and causing wear. The inner arc-shaped sidewall and the outer arc-shaped sidewall are connected. The surface of the rotary gear ring 22 between the side walls is provided with multiple through mounting holes. Correspondingly, the upper plate retaining ring 21 is also provided with mounting holes. Each mounting hole is used to assemble an upper plate screw 23. In this embodiment, the multiple upper plate screws 23 are spaced apart along the circumferential direction of the upper plate assembly 2. The multiple upper plate screws 23 can stably connect the upper plate retaining ring 21 and the rotary gear ring 22. At the same time, when the rotary gear ring 22 is driven to rotate, the multiple upper plate screws 23 can provide power transmission, and the multiple upper plate screws 23 help to ensure uniform force distribution.

[0051] Example 4

[0052] Based on Examples 2 and 3, such as Figure 4 , 6 As shown, the transmission gear set includes a motor gear 42 and two intermediate gears 43. The motor gear 42 is driven to rotate by the output shaft of the drive motor 41. The two intermediate gears 43 are symmetrically distributed on both sides of the motor gear 42, and each intermediate gear 43 is meshed with the motor gear 42 and the rotary gear ring 22 respectively.

[0053] In this embodiment, the motor gear 42 is simultaneously engaged with the rotating gear ring 22 via two intermediate gears 43, which helps to ensure that the rotating gear ring 22 receives a stable and balanced driving force.

[0054] Specifically, such as Figure 4 , 6As shown, the motor gear 42 is preferably mounted on the output shaft of the drive motor 41. The two intermediate gears 43 are rotatably supported by rod-like bodies such as fixing pins 44, ensuring that the intermediate gears 43 do not undergo axial displacement during rotation. In this embodiment, the dimensions of the motor gear 42 and the two intermediate gears 43 are similar, that is, their radii and number of teeth are similar. The radius and number of teeth of the rotating gear ring 22 are much larger than those of the motor gear 42 and the intermediate gears 43, and the thickness of the motor gear 42 and the intermediate gears 43 is approximately the same as the thickness of the rotating gear ring 22. Figure 4 , 6 In this design, the thickness of the rotary gear ring 22 is greater than that of the motor gear 42 and the intermediate gear 43, which helps to ensure the contact area between the intermediate gear 43 and the rotary gear ring 22, thereby improving the stability of the fit.

[0055] Example 5

[0056] Based on Embodiments 3 and 4, the upper plate assembly 2 further includes a rotary table 24, which is fixed to the surface of one of the upper plate retaining rings 21. The rotary table 24 is provided with a rotation limit block 241, and the support structure 1 is provided with a rotation stop part 111, which is located on the rotation trajectory of the rotation limit block 241.

[0057] The beneficial effect of adopting the above-mentioned further solution is that by setting a rotation limit block 241 on the rotary table 24, the rotation limit block 241 cooperates with the rotation stop part 111 of the support structure 1 to limit the rotation angle of the upper plate assembly 2, and can also serve as a prompt when the upper plate assembly 2 has rotated into place.

[0058] Preferred, such as Figure 1-4 As shown in Figure 8, the rotary table 24 adopts a disc body that matches the size of the upper disc retaining ring 21. The rotary table 24 is fixed to an adjacent upper disc retaining ring 21 by fasteners. In this embodiment, the rotary table 24 is fixed to the upper surface of an upper disc retaining ring 21. Figure 8 In this configuration, the inner diameter of the rotary disk 24 is larger than the inner diameter of the upper disk retaining ring 21. The outer edge of the rotary disk 24 extends to form a convex edge, which is fitted onto the outer side of the upper disk retaining ring 21 for rotational engagement with the support structure 1. When the upper disk assembly 2 is rotatably mounted on the support structure 1, the rotary disk 24 is located on the upper surface of the upper disk assembly 2. A rotation limiting block 241 protrudes from the surface of the rotary disk 24. Figure 8As shown, the rotation limit block 241 consists of two rectangular bosses, and the two rotation blocks are symmetrically located on both sides of the turntable 24. Each rotation limit block 241 extends outward along the radial direction of the turntable 24 for a certain distance, so that the rotation limit block 241 can cooperate with the support structure 1. That is, the support structure 1 is provided with a protruding rotation stop part 111. The number of rotation stop parts 111 is preferably two. The rotation stop parts 111 are located on the trajectory of the rotation limit block 241 and are used to limit the rotation angle of the upper plate assembly 2.

[0059] like Figure 2 As shown, when the upper plate assembly 2 rotates clockwise, the left-side rotation limit block 241 on the rotary table 24 abuts against one rotation stop 111, and the right-side rotation limit block 241 on the rotary table 24 separates from the other rotation stop 111, thereby limiting the clockwise rotation angle of the upper plate assembly 2; Figure 3 As shown, when the upper plate assembly 2 rotates counterclockwise, the rotation limit block 241 on the left side of the rotary table 24 separates from a rotation stop 111, and the rotation limit block 241 on the right side of the rotary table 24 abuts against another rotation stop 111, thereby limiting the counterclockwise rotation angle of the upper plate assembly 2.

[0060] Furthermore, a sensor (not shown) can be configured between the rotary table 24 and the support assembly. The sensor can be triggered when the rotary table 24 rotates to the limit position or the initial position. The limit position is the position where the rotary table 24 rotates the largest clockwise or counterclockwise angle. Preferably, the sensor's set position can be used in conjunction with the rotary limit block 241 and / or the rotary stop part 111.

[0061] Furthermore, such as Figure 1-4 As shown in Figure 8, the rotary table 24 is also provided with multiple clearance grooves 242, each clearance groove 242 corresponding to an upper plate screw 23, so that one end of each upper plate screw 23 can be located in a clearance groove 242. This facilitates the installation of a nut at one end of the upper plate screw 23 to form an assembly and fixation, and also avoids the end of the nut from contacting the lower surface of the rotary table 24, reducing wear between the nut and the rotary table 24. In addition, when the rotary gear ring 22 is driven to rotate, the upper plate screw 23 can cooperate with the two sides of the clearance groove 242, realizing the consistency of the overall rotation of the upper plate assembly 2.

[0062] In this embodiment, the clearance groove 242 is an open groove with its opening facing the working cavity. Of course, in other embodiments, the clearance groove 242 can also be a closed groove, and the shape of the clearance groove 242 can be circular, strip-shaped, etc.

[0063] Example 6

[0064] Based on the above embodiments, such as Figure 1-4As shown, the upper plate assembly 2 also includes at least one pair of upper plate cylinders 25. Each pair of upper plate cylinders 25 is radially spaced between two upper plate retaining rings 21 along the working chamber. Each upper plate cylinder 25 is connected to an upper cylinder die 26 for contacting the first drill pipe 81. The upper cylinder die 26 is driven by the upper plate cylinder 25 to reciprocate radially along the working chamber.

[0065] The beneficial effect of adopting the above-mentioned further solution is that the clamping of the first drill rod 81 is completed by the upper cylinder 25 and the upper cylinder die 26, which has the advantages of rapid action and high reliability.

[0066] Specifically, such as Figure 4 As shown, the upper plate assembly 2 includes a pair of upper plate cylinders 25. The two upper plate cylinders 25 are radially spaced between the two upper plate retaining rings 21 along the working chamber. Each upper plate cylinder 25 is adjacent to one end of the rotary gear ring 22, so that the two upper plate cylinders 25 form a symmetrical structure. The upper plate cylinder 25 is connected to an upper cylinder die 26. Under the drive of the upper plate cylinders 25, the upper cylinder die 26 reciprocates radially along the working chamber. That is, when the two upper cylinder dies 26 move towards each other, the two upper cylinder dies 26 clamp the first drill rod 81. Then the rotary gear ring 22 rotates and can drive the first drill rod 81. When the two upper cylinder dies 26 move away from each other, the two upper cylinder dies 26 separate from the first drill rod 81, thereby releasing the first drill rod 81.

[0067] Example 7

[0068] Based on Example 6, such as Figure 7 As shown, at least one upper plate retaining ring 21 has a cylinder positioning groove 5. The cylinder positioning groove 5 can provide space for the upper plate cylinder 25 to be installed in a limited position, and can also transmit rotational torque, so that the upper plate cylinder 25 can rotate together with the upper plate retaining ring 21, ensuring the rotation consistency of the upper plate assembly 2.

[0069] In this embodiment, each upper plate retaining ring 21 has a cylinder positioning groove 5 on its surface. The cylinder positioning groove 5 is located between two upper plate screws 23. The cylinder positioning grooves 5 on the same upper plate retaining ring 21 are symmetrically distributed, and the cylinder positioning grooves 5 of the two upper plate retaining rings 21 can correspond in the vertical direction, so that the upper and lower parts of the same upper plate cylinder 25 are respectively confined within the cylinder positioning grooves 5 of the two upper plate retaining rings 21. Figure 7 In the middle, each cylinder positioning groove 5 is a rectangular groove. The cylinder positioning groove 5 can communicate with the working chamber. The two sides of the cylinder positioning groove 5 form a stepped shape with the surface of the upper plate retaining ring 21. When the upper plate assembly 2 is driven to rotate, the two sides of the cylinder positioning groove 5 abut against the side wall of the upper plate cylinder 25, thereby driving the upper plate cylinder 25 to rotate together, ensuring the rotation consistency of the upper plate assembly 2.

[0070] Example 8

[0071] Based on the above embodiments, such as Figure 1-9 As shown, the support structure 1, the upper plate assembly 2 and the lower plate assembly 3 are provided with a notch 6 on the same side to connect the working chamber. The inner diameter of the notch 6 is greater than or equal to the diameter of the working chamber. By setting the notch 6 on the same side of the support structure 1, the upper plate assembly 2 and the lower plate assembly 3, it is convenient to introduce the drill bit into the working chamber.

[0072] In this embodiment, the support structure 1, the upper plate assembly 2, and the lower plate assembly 3 all adopt an annular structure with a notch 6 on one side. The hollow parts of the three are connected in the vertical direction to form a working cavity. The annular structure can reduce the space occupied by the upper plate assembly 2 during rotation. The notch 6 is opened on the same side of the three, and the inner diameter of the notch 6 is greater than or equal to the diameter of the working cavity. Preferably, the notch 6 is smoothly connected to the working cavity, which further facilitates the introduction of the drill bit.

[0073] Example 9

[0074] Based on Example 8, such as Figure 1-3 As shown in Figure 5, the lower plate assembly 3 includes two axially spaced lower plate retaining rings 31 facing each other. At least one pair of lower plate cylinders 33 is provided between the two lower plate retaining rings 31. Each pair of lower plate cylinders 33 is radially spaced facing each other along the working chamber. Each lower plate cylinder 33 is connected to a cylinder die for contacting the second drill pipe 82. The notch 6 of the upper plate retaining ring 21 and the notch 6 of the lower plate retaining ring 31 both form guide slopes 7.

[0075] Compared to the upper plate assembly 2, the lower plate assembly 3 has a simpler structure, which is conducive to simplifying the structure and reducing costs. At the same time, by forming guide slopes 7 on both sides of the notch 6 of the upper plate retaining ring 21 and the lower plate retaining ring 31, it is easier to introduce the drill bit into the working chamber.

[0076] like Figure 5As shown, the lower plate assembly 3 includes two axially spaced and opposite lower plate retaining rings 31. Unlike the upper plate assembly 2, the lower plate assembly 3 does not have a rotary gear ring 22. The lower plate retaining rings 31 can adopt the structure of the upper plate retaining rings 21. The two lower plate retaining rings 31 are fixedly connected by multiple lower plate screws 32, which are also spaced apart along the circumference of the working cavity. A pair of lower plate hydraulic cylinders 33 are provided between the two lower plate retaining rings 31. The pair of lower plate hydraulic cylinders 33 move radially along the working cavity and are symmetrically distributed. Each lower cylinder 33 is located between two adjacent lower cylinder screws 32. Each lower cylinder 33 is connected to a lower cylinder die 34 for contacting the second drill rod 82. Driven by the lower cylinder 33, the lower cylinder die 34 reciprocates radially along the working chamber. That is, when the two lower cylinder dies 34 move towards each other, the two lower cylinder dies 34 clamp the second drill rod 82. When the two lower cylinder dies 34 move away from each other, the two lower cylinder dies 34 separate from the second drill rod 82, thereby releasing the second drill rod 82.

[0077] It should be noted that when the upper plate assembly 2 rotates, the upper cylinder die 26 and the lower cylinder die 34 remain in a state of clamping the first drill rod 81 and the second drill rod 82, respectively.

[0078] Preferably, in this embodiment, the lower plate retaining ring 31 is also provided with a cylinder positioning groove 5. The cylinder positioning groove 5 can be seen from the cylinder positioning groove 5 of the upper plate retaining ring 21. The lower plate cylinder 33 is limited and assembled in the cylinder positioning groove 5.

[0079] In this embodiment, both the upper retaining ring 21 and the lower retaining ring 31 adopt a ring structure with a notch 6. Guide slopes 7 are formed on both sides of the notch 6. The guide slopes 7 change the inner diameter of the notch 6, making the inner diameter of the notch 6 narrower as it gets closer to the working chamber, so that the drill bit can be easily introduced. Furthermore, the notch 6 of the support structure 1 can also be provided with guide slopes 7.

[0080] Example 10

[0081] Based on the above embodiments, such as Figure 1-3 As shown in Figure 9, the support structure 1 includes an upper sliding ring 11, an upper sliding seat 12, and a lower sliding seat 13, all of which are annular. The upper sliding ring 11, the upper sliding seat 12, and the lower sliding seat 13 are arranged sequentially from top to bottom at intervals. The upper plate assembly 2 is rotatably disposed between the upper sliding ring 11 and the upper sliding seat 12. The lower plate assembly 3 is disposed between the upper sliding seat 12 and the lower sliding seat 13. The drive assembly 4 is installed through the upper sliding ring 11 and / or the upper sliding seat 12 and is adjacent to the upper plate assembly 2. The upper sliding ring 11, the upper sliding seat 12, and the lower sliding seat 13 have a notch 6 on the same side that communicates with the working cavity. The notch 6 faces away from the drive assembly 4.

[0082] The beneficial effect of adopting the above-mentioned further solution is that the support structure 1 has an upper plate slip ring 11, an upper plate slide block 12 and a lower plate slide block 13 arranged at intervals, which can provide relatively independent installation space for the upper plate assembly 2 and the lower plate assembly 3, and prevent mutual interference between components.

[0083] Specifically in this embodiment, such as Figure 9 As shown, the support structure 1 includes an annular upper sliding ring 11, an upper sliding seat 12, and a lower sliding seat 13. The upper sliding ring 11, the upper sliding seat 12, and the lower sliding ring are preferably fixed axially at intervals by welding, so that the upper sliding ring 11, the upper sliding seat 12, and the lower sliding seat 13 are fixed as a whole, thereby providing a stable installation position for the upper assembly 2, the lower assembly 3, and the drive assembly 4. The upper sliding ring 11, the upper sliding seat 12, and the lower sliding ring are provided with a notch 6 on the same side to facilitate the introduction of the drill bit.

[0084] The inner diameters of the upper sliding ring 11 and the upper sliding seat 12 are equal to or slightly larger than the outer diameter of the upper plate assembly 2. The upper plate assembly 2 is located between the upper sliding ring 11 and the upper sliding seat 12. Alternatively, the upper and lower parts of the upper plate assembly 2 can be understood as being slidably fitted into the upper sliding ring 11 and the upper sliding seat 12, respectively. In the initial state, the notch 6 of the upper plate assembly 2 corresponds to the notch 6 of the support structure 1. When the upper plate assembly 2 is driven to rotate, the circumferential sidewall of the upper plate assembly 2 can slide and engage with the inner sidewall of the upper sliding ring 11 and the upper sliding seat 12. The notch 6 of the upper plate assembly 2 and the notch 6 of the support structure 1... The notch 6 is misaligned, and the gap between the upper plate slip ring 11 and the upper plate slide seat 12 can provide rotation space for the upper plate cylinder 25. The upper surface of the upper plate slip ring 11 is provided with a rotation stop part 111. The rotation limit part on the rotary table 24 extends to the upper surface of the upper plate slip ring 11. The rotary gear ring 22 is located between the upper plate slip ring 11 and the upper plate slide seat 12 and rotates around the working cavity. The rotary gear ring 22 cannot contact the upper plate slip ring 11 and the upper plate slide seat 12, thus ensuring the cooperation with the drive assembly 4. The upper plate cylinder 25 moves radially along the working cavity between the upper plate slip ring 11 and the upper plate slide seat 12.

[0085] The lower plate assembly 3 is located between the upper plate slide 12 and the lower plate slide 13. The inner diameter of the upper plate slide 12 and the lower plate slide 13 is equal to or slightly larger than the outer diameter of the lower plate assembly 3. The lower plate assembly 3 does not need to rotate. The lower plate assembly 3 can be fixed by embedding, so that the notch 6 of the lower plate assembly 3 always corresponds to the notch 6 of the upper plate slide 12 and the lower plate slide 13. The lower plate cylinder 33 can move at intervals between the upper plate slide 12 and the lower plate slide 13.

[0086] In this embodiment, the drive assembly 4 is mounted via the upper plate slip ring 11 and the upper plate slide block 12. Figure 9In the figure, the upper plate slip ring 11 and the upper plate slide block 12 are positioned opposite to the notch 6 for mounting the drive assembly 4. Preferably, the upper plate slip ring 11 and the upper plate slide block 12 are provided with mounting bases 14. In the figure, the mounting base 14 includes at least two vertically spaced mounting plates. Each mounting plate has at least one large through hole 15 and at least two small through holes 16. The drive motor 41 is fixed on the mounting base 14. The output shaft of the drive motor 41 passes through the large through hole 15. A motor gear 42 is sleeved on the output shaft. Each small through hole 16 is provided with a fixing pin 44. Each fixing pin 44 is used to support an intermediate gear 43, so that the motor gear 42 and the two intermediate gears 43 are located between the upper plate slip ring 11 and the upper plate slide block 12. That is, the motor gear 42 and the two intermediate gears 43 are adjacent to the rotary gear ring 22 of the upper plate assembly 2, so that the engagement process is located inside the support structure 1, avoiding the occupation of external space and reducing external interference.

[0087] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0088] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0089] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0090] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0091] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0092] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A shackle-on device for iron drillers, characterized in that, The system includes a support structure (1), which has an upper plate assembly (2), a lower plate assembly (3), and a drive assembly (4). The support structure (1), the upper plate assembly (2), and the lower plate assembly (3) are coaxially connected to form a working cavity. The working cavity is used to pass through a first drill rod (81) and a second drill rod (82) that are coaxial. The upper plate assembly (2) and the lower plate assembly (3) are used to clamp the first drill rod (81) and the second drill rod (82), respectively. The drive assembly (4) is connected to the upper plate assembly (2) and is used to drive the upper plate assembly (2) to rotate relative to the lower plate assembly (3).

2. The iron drill maker's unhooking device according to claim 1, characterized in that, The upper plate assembly (2) includes two axially spaced and fixed upper plate retaining rings (21). At least one upper plate retaining ring (21) is slidably engaged with the support structure (1). A rotary gear ring (22) is stacked between the two upper plate retaining rings (21). The gear portion of the rotary gear ring (22) faces away from the working cavity. The drive assembly (4) includes a drive motor (41). The output shaft of the drive motor (41) is meshed with the rotary gear ring (22) through a transmission gear set and is used to drive the upper plate assembly (2) to rotate.

3. The iron drill maker's unhooking device according to claim 2, characterized in that, The rotary gear ring (22) is an incomplete gear ring. The rotary gear ring (22) is fixed between two upper plate retaining rings (21) by multiple upper plate screws (23). The multiple upper plate screws (23) are arranged around the outside of the working cavity in the circumferential direction.

4. The iron drill maker's unhooking device according to claim 2, characterized in that, The transmission gear set includes a motor gear (42) and two intermediate gears (43). The motor gear (42) is fixedly connected to the output shaft of the drive motor (41). The two intermediate gears (43) are symmetrically distributed on both sides of the motor gear (42) and rotatably mounted on the support structure (1). Each intermediate gear (43) is meshed with the motor gear (42) and the rotary gear ring (22) respectively.

5. The iron drill maker's unhooking device according to claim 2, characterized in that, The upper plate assembly (2) also includes a rotary table (24), which is fixed to the surface of one of the upper plate retaining rings (21). The rotary table (24) is provided with a rotation limit block (241), and the support structure (1) is provided with a rotation stop (111). The rotation stop (111) is located on the rotation trajectory of the rotation limit block (241).

6. The iron driller's upper and lower unhooking device according to any one of claims 2-4, characterized in that, The upper plate assembly (2) further includes at least one pair of upper plate cylinders (25). Each pair of upper plate cylinders (25) is radially spaced between two upper plate retaining rings (21) along the working chamber. Each upper plate cylinder (25) is connected to an upper cylinder die (26) for contacting the first drill pipe (81). The upper cylinder die (26) is driven by the upper plate cylinder (25) to reciprocate radially along the working chamber.

7. The iron drill maker's unhooking device according to claim 6, characterized in that, At least one upper plate retaining ring (21) has a cylinder positioning groove (5) on its surface, and the upper plate cylinder (25) is installed in the cylinder positioning groove (5).

8. The iron drill maker's unhooking device according to claim 6, characterized in that, The support structure (1), the upper plate assembly (2) and the lower plate assembly (3) are provided with a notch (6) on the same side to communicate with the working cavity, and the inner diameter of the notch (6) is greater than or equal to the diameter of the working cavity.

9. A detachable device for an iron driller according to claim 8, characterized in that, The lower plate assembly (3) includes two axially spaced lower plate retaining rings (31) facing each other. At least one pair of lower plate cylinders (33) are provided between the two lower plate retaining rings (31). Each pair of lower plate cylinders (33) is radially spaced facing each other along the working chamber. Each lower plate cylinder (33) is connected to a lower cylinder die (34) for contacting the second drill pipe (82). Guide slopes (7) are formed on both sides of the notch (6) of the upper plate retaining ring (21) and the notch (6) of the lower plate retaining ring (31).

10. The iron drill maker's unhooking device according to claim 9, characterized in that, The support structure (1) includes an upper sliding ring (11), an upper sliding seat (12), and a lower sliding seat (13), all of which are annular. The upper sliding ring (11), the upper sliding seat (12), and the lower sliding seat (13) are arranged alternately from top to bottom. The upper plate assembly (2) is rotatably disposed between the upper sliding ring (11) and the upper sliding seat (12). The lower plate assembly (3) is disposed between the upper sliding seat (12) and the lower sliding seat (13). The drive assembly (4) is installed through the upper sliding ring (11) and / or the upper sliding seat (12) and is adjacent to the upper plate assembly (2). The upper sliding ring (11), the upper sliding seat (12), and the lower sliding seat (13) have a notch (6) communicating with the working cavity on the same side. The notch (6) faces away from the drive assembly (4).

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