Auxiliary device for repairing rotary drilling bit and construction method thereof

Abstract

The present application relates to an auxiliary device for repairing a rotary drill bit and a construction method thereof, and relates to the field of rotary drill bit repair. The auxiliary device includes a fixing assembly for clamping and fixing the rotary drill bit, the fixing assembly being connected to a rotating mechanism, the rotating mechanism being connected to a lifting mechanism, and the lifting mechanism being mounted on a support frame; the fixing assembly including at least one pair of clamping rings, each end of the pair of clamping rings being fixedly connected; the lifting mechanism including at least one first chain vertically mounted on the support frame, the first chain being fixedly connected to one side of the rotating mechanism and driven by a servo motor; and the rotating mechanism including a pair of rotating shafts fixed to the clamping rings, each rotating shaft also being connected to a servo motor via a second chain. The present application facilitates the repair and tooth replacement of rotary drill bits.

Description

Technical Field

[0001] The present application relates to the field of rotary drilling bit maintenance, and in particular to an auxiliary device for repairing a rotary drilling bit and a construction method thereof. Background Art

[0002] Reference Figure 1 The rotary drilling rig is composed of a drill rod, a rotary drill bit 8, a rotary drilling machine, and a main engine. It is generally used in bridge projects, house construction, highways, piling, etc.

[0003] The lower circumference of the rotary drill bit 8 is provided with a circle of teeth. During on-site construction, the rotary drill bit 8 often needs to be repaired or the teeth need to be replaced. During repair or tooth replacement, the rotary drill bit 8 needs to be flipped or translated, and the rotary drill bit 8 needs to be fixed at a certain tilt angle. The rotary drill bit 8 itself is large in size and inconvenient to operate manually. Therefore, it is necessary to use a crane to lift the rotary drill bit 8 and perform flipping and translation. After the crane lifts the rotary drill bit 8, it is easy to shake, and it may hit the construction workers during the translation and flipping process. The safety risk factor is too great, and the safety of the construction workers cannot be guaranteed. In addition, each repair of the rotary drill bit 8 will lead to an increase in construction costs and an increase in risk factors, which is time-consuming and cannot meet construction needs.

[0004] In view of the above problems, the inventor believes that the rotary drilling drill bit 8 is inconvenient to repair and replace teeth. Summary of the Invention

[0005] In order to facilitate the maintenance and tooth replacement of a rotary drilling bit, the present application provides an auxiliary device for repairing a rotary drilling bit and a construction method thereof.

[0006] The present application provides an auxiliary device for repairing a rotary drilling bit and a construction method thereof, which adopt the following technical solutions:

[0007] In a first aspect, the present application provides an auxiliary device for repairing a rotary drilling bit, which adopts the following technical solution:

[0008] An auxiliary device for repairing a rotary drilling bit, comprising a fixing assembly for clamping and fixing the rotary drilling bit, the fixing assembly being connected to a rotating mechanism, the rotating mechanism being connected to a lifting mechanism, and the lifting mechanism being mounted on a support frame; the fixing assembly comprising at least one pair of clamping rings, each end of the pair of clamping rings being fixedly connected; the lifting mechanism comprising at least one first chain vertically mounted on the support frame, the first chain being fixedly connected to one side of the rotating mechanism, and the first chain being driven by a servo motor; the rotating mechanism comprising a pair of rotating shafts fixed to the clamping rings, each rotating shaft being also connected to a servo motor via a second chain.

[0009] By adopting the above technical solution, when the rotary drilling bit needs to be repaired or the teeth need to be replaced, the rotary drilling bit is controlled to be located between each pair of clamping rings, and then each end of the pair of clamping rings is fixed respectively so that the rotary drilling bit is fixed between the clamping rings; then the servo motor in the lifting mechanism is controlled to drive the first chain to rotate, and the rotation of the first chain drives the rotating mechanism and the rotary drilling bit to rise and fall until they reach a height matching the height of the maintenance personnel; then the servo motor in the rotating mechanism is started to drive the second chain to rotate, and the second chain drives a pair of rotating shafts to rotate, and the rotation of the rotating shafts can drive the rotary drilling bit to rotate. When the rotary drilling bit rotates to the position where the rotary drilling bit needs to be repaired or the teeth need to be replaced, it reaches an angle that is convenient for the maintenance personnel to operate. The device is simple, easy to operate and meets the construction requirements at the same time, and is convenient for the repair and tooth replacement of the rotary drilling bit.

[0010] Optionally, the rotating mechanism includes a hollow lifting plate and a pair of hollow connecting rods, the pair of connecting rods are connected to and fixed at both ends of the lifting plate, each rotating shaft is inserted into the corresponding connecting rod and connected to the second chain, and the servo motor connected to the second chain is installed inside the lifting plate.

[0011] By adopting the above technical solution, the second chain and the servo motor are installed inside the connecting rod and the lifting plate, so that the connecting rod and the lifting plate have a certain protective effect on the second chain and the servo motor.

[0012] Optionally, a connecting plate is fixed to the upper surface of one of the clamping rings, and a first reinforcement ring and a second reinforcement ring are hinged on both side surfaces thereof. The first reinforcement ring and the second reinforcement ring are connected to reinforcement components that rotate through a rotating shaft to pull the free ends of the first reinforcement ring and the second reinforcement ring to move toward each other to clamp the rotary drilling drill bit.

[0013] By adopting the above technical solution, the rotation of the rotating shaft can drive the reinforcement assembly to pull the first reinforcement ring and the second reinforcement ring to move toward each other, so that the first reinforcement ring and the second reinforcement ring clamp the rotary drill bit, reducing the possibility of the rotary drill bit being thrown off during rotation, and no additional power is needed to drive the first reinforcement ring and the second reinforcement ring to move toward each other, which saves resources.

[0014] Optionally, the reinforcement assembly includes a mounting plate fixed to one end of the first reinforcement ring away from the connecting plate, a through hole is provided on the mounting plate, a winding wheel is fixed on the side wall of the rotating shaft near the through hole, and a steel wire rope is fixed to one end of the second reinforcement ring near the through hole, and the steel wire rope passes through the through hole and is fixed to the side wall of the winding wheel.

[0015] By adopting the above technical solution, the rotary drill bit is placed between the first reinforcement ring and the second reinforcement ring, and at the same time, the rotary drill bit is placed between a pair of clamping rings. After the rotary drill bit is fixed by the pair of clamping rings, the rotating mechanism is started to drive the rotating shaft to rotate, thereby driving the rotary drill bit to rotate. The rotation of the rotating shaft drives the winding wheel to rotate to reel in the wire rope, and the wire rope pulls the first reinforcement ring and the second reinforcement ring in opposite directions to clamp the rotary drill bit. In this way, as the rotary drill head rotates, the first reinforcement ring and the second reinforcement ring gradually clamp the rotary drill bit, thereby reducing the occurrence of the rotary drill bit falling during the rotation process.

[0016] Optionally, the second reinforcement ring includes at least one section of elastic rod.

[0017] By adopting the above technical solution, when the second reinforcement ring is pulled toward the first reinforcement ring to clamp the rotary drill bit, the elastic rod is stretched so that the second reinforcement ring moves more smoothly toward the first reinforcement ring, thereby facilitating the second reinforcement ring to gradually clamp the rotary drill bit.

[0018] Optionally, a first support block is fixed to the upper surface of the first reinforcement ring, a second support block is fixed to the upper surface of the second reinforcement ring, a plug hole is provided on one side of the first support block, a mounting rod passing through the plug hole is fixed on the side of the second support block close to the first support block, a connecting block is connected to the mounting rod, the connecting block is located on the side of the first support block away from the second support block, a spring in a compressed state is sleeved on the outside of the mounting rod, one end of the spring is fixed to the connecting block, and the other end is fixed to the first support block.

[0019] By adopting the above technical solution, the first reinforcement ring and the second reinforcement ring are rotated in a direction away from each other, and then the rotary drilling bit is placed between the first reinforcement ring and the second reinforcement ring. The compressed spring causes the first reinforcement ring and the second reinforcement ring to initially clamp the rotary drilling bit.

[0020] Optionally, the mounting rod is a threaded rod, the connecting block is threadedly connected to the mounting rod, the connecting block is rotatably connected to a transition block passed through by the mounting rod on one side close to the first support block, and the end of the spring away from the first support block is fixed to the transition block.

[0021] By adopting the above technical solution, by twisting the connecting block and the mounting rod, the connecting block can drive the transition block to move away from or closer to the first support block, so that the compression amount of the spring can be controlled, thereby controlling the degree to which the first reinforcement ring and the second reinforcement ring clamp the rotary drilling bit.

[0022] In a second aspect, the present application provides a construction method for repairing a rotary drilling bit auxiliary device, which adopts the following technical solution:

[0023] A construction method for repairing a rotary drilling bit auxiliary device comprises the following steps:

[0024] 1) Push the auxiliary device to the designated location on the construction site and wait;

[0025] 2) Loosen the bolts and nuts between a pair of clamping rings, lower the rotary drill bit that needs to be repaired or replaced between the pair of clamping rings with a crane, and lock the pair of clamping rings with the bolts and nuts;

[0026] 3) Control the crane to separate from the rotary drilling bit and evacuate the crane from the lifting area;

[0027] 4) The lifting mechanism is activated to drive the rotating mechanism and the rotary drill bit to a height suitable for the rotation of the rotary drill bit. The rotating mechanism is then activated to control the rotary drill bit to rotate in the air until the rotary drill bit reaches a position where it needs to be repaired or the teeth are replaced, which is convenient for maintenance personnel to operate. The servo motor is then controlled to lock the rotation angle of the rotary drill bit at this time.

[0028] 5) Start the lifting mechanism to drive the rotating mechanism and the rotary drill bit to rise and fall until the rotary drill bit reaches a height that is convenient for maintenance personnel to operate, and control the servo motor to lock the height of the rotary drill bit (8) at this time;

[0029] 6) The maintenance personnel will carry out the next step of maintenance.

[0030] By adopting the above technical solution, the device can fix the rotary drill bit and can control the rotary drill bit to be raised, lowered and rotated to a fixed height and angle, effectively reducing the safety risks during the maintenance and tooth replacement of the rotary drill bit and shortening the maintenance time. In addition, this construction method is simple, convenient and fast, and can meet the construction requirements.

[0031] Optionally, add the following steps between step 1) and step 2):

[0032] The first reinforcement ring and the second reinforcement ring are rotated away from each other, and the rotary drilling bit that needs to be repaired or the teeth replaced is lowered by a crane to pass between the first reinforcement ring and the second reinforcement ring. The rotating shaft rotates to control the reinforcement assembly to pull the free ends of the first reinforcement ring and the second reinforcement ring to move toward each other and clamp the rotary drilling bit.

[0033] By adopting the above technical solution, the first reinforcement ring and the second reinforcement ring have a pre-clamping effect on the rotary drill bit. As the rotating shaft rotates, the wire rope is gradually reeled in by the drive of the rotating shaft, thereby driving the first reinforcement ring and the second reinforcement ring to gradually clamp the rotary drill bit, reducing the possibility of the rotary drill bit being easily thrown off during rotation.

[0034] In summary, this application includes at least one of the following beneficial technical effects:

[0035] 1. The device has a simple structure and meets the construction requirements. Compared with the traditional hoisting and laying method, the device of the present invention is prefabricated off-site and then used directly on-site, which reduces safety risks, takes less time and is easy to operate.

[0036] 2. This device has strong versatility, reduces the safety risks during the maintenance and tooth replacement of rotary drilling bits, speeds up construction, saves construction time, and improves the safety of the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural diagram of the background technology of this application.

[0038] Figure 2 It is a schematic diagram of the overall structure of the auxiliary device according to the first embodiment of the present application.

[0039] Figure 3 It is a structural diagram of the lifting mechanism of Example 1 of the present application.

[0040] Figure 4 It is a structural diagram of the rotating mechanism according to the first embodiment of the present application.

[0041] Figure 5 It is a structural diagram of the fixing component of the second embodiment of the present application.

[0042] Figure 6 This is a schematic structural diagram of the reinforcement component according to the second embodiment of the present application.

[0043] Figure 7 This is a schematic diagram of the connection position of the clamping assembly according to the third embodiment of the present application.

[0044] Figure 8 This is a schematic structural diagram of the clamping assembly according to the third embodiment of the present application.

[0045] Explanation of reference numerals: 1. support frame; 11. first support rod; 12. second support rod; 13. mounting groove; 14. support block; 2. fixing assembly; 21. fixing ring; 211. clamping ring; 22. connecting plate; 23. first reinforcement ring; 24. second reinforcement ring; 241. elastic rod; 242. transition rod; 3. rotating mechanism; 31. lifting plate; 32. sealing box; 33. connecting rod; 34. rotating shaft; 35. second sprocket; 36. second chain; 37. second drive Motor; 4. Lifting mechanism; 41. First sprocket; 42. Fixed plate; 43. First chain; 44. First drive motor; 5. Track; 6. Counterweight; 7. Reinforcement assembly; 71. Mounting plate; 72. Through hole; 73. Guide wire wheel; 74. Winding wire wheel; 75. Wire rope; 8. Rotary drill bit; 9. Clamping assembly; 91. First support block; 911. Plug hole; 92. Second support block; 93. Mounting rod; 94. Spring; 95. Transition block; 96. Connecting block. DETAILED DESCRIPTION

[0046] The following is combined with Figure 2-8 This application is described in further detail.

[0047] Example 1:

[0048] The embodiment of the present application discloses an auxiliary device for repairing a rotary drilling drill bit. Figure 2 The auxiliary device includes a support frame 1. A fixing assembly 2 for mounting a rotary drill bit 8 is provided on one side of the support frame 1. A rotating mechanism 3 is connected to the fixing assembly 2. The rotating mechanism 3 can control the rotation of the fixing assembly 2. The rotating mechanism 3 is connected to a lifting mechanism 4 that drives the rotating mechanism 3 to rise and fall. The lifting mechanism 4 is connected to the support frame 1.

[0049] When the rotary drilling bit 8 needs to be repaired or the teeth need to be replaced, the rotary drilling bit 8 is fixedly connected to the fixing assembly 2, and then the lifting mechanism 4 is started to drive the rotating mechanism 3, the fixing assembly 2 and the rotary drilling bit 8 to rise and fall to a height that matches the height of the maintenance personnel. Then the rotating mechanism 3 is started to drive the fixing assembly 2 and the rotary drilling bit 8 to rotate, and the rotary drilling bit 8 is fixed at a certain tilt angle, so as to adapt to the maintenance personnel to repair different parts of the rotary drilling bit 8 and replace the teeth of different parts.

[0050] The fixing assembly 2 includes a pair of upper and lower fixing rings 21, with a pair of connecting plates 22 fixedly connected between the fixing rings 21. Each fixing ring 21 includes a pair of flexible clamping rings 211. The rotary drill bit 8 is positioned between the pair of clamping rings 211 in each fixing ring 21. The ends of the clamping rings 211 are fastened together using bolts and nuts. The flexible clamping rings 211 facilitate the insertion of the rotary drill bit 8 between the pair of clamping rings 211.

[0051] After the pair of fixing rings 21 clamp the rotary drill bit 8, the static friction between the fixing rings 21 and the rotary drill bit 8 is greater than the self-weight of the rotary drill bit 8, so the rotary drill bit 8 is difficult to fall due to its own weight.

[0052] The support frame 1 includes a pair of first support rods 11 arranged in a vertical direction, and a pair of second support rods 12 arranged in a horizontal direction, and each end of the pair of first support rods 11 is fixedly connected to one of the second support rods 12.

[0053] Reference Figure 1 and Figure 3 The side surfaces of the pair of first support rods 11 that are adjacent to each other are each provided with a mounting slot 13. The lifting mechanism 4 includes a pair of first sprockets 41 disposed within each mounting slot 13. The pair of first sprockets 41 are disposed at both ends of each mounting slot 13 in the longitudinal direction. Each first sprocket 41 is rotatably connected to the bottom wall of the mounting slot 13 via an axis. A fixing plate 42 is rotatably connected to the side of each first sprocket 41 that is away from the mounting slot 13. One end of the fixing plate 42 is fastened to the first support rod 11 via bolts. A first chain 43 is mounted between the pair of first sprockets 41 within each mounting slot 13. One side of the pair of first chains 43 is fixedly connected to the rotating mechanism 3.

[0054] The lifting mechanism 4 also includes two first drive motors 44. The output shaft of each first drive motor 44 extends through the fixed plate 42 and is fixedly connected to the axis of one of the first sprockets 41 in each mounting slot 13. A support block 14 is fixedly connected to the side of the support frame 1 facing away from the rotating mechanism 3. The support block 14 is located at the lower end of the support frame 1. The first drive motor 44 is fixedly connected to the side of the support block 14 facing the lifting mechanism 4.

[0055] When it is necessary to control the lifting of the rotary drill bit 8, the first drive motors 44 are started at the same time. The two first drive motors 44 rotate synchronously to drive the first sprocket 41 to rotate. The rotation of the first sprocket 41 drives the first chain 43 to rotate. The first chain 43 rotates back and forth up and down to drive the rotating mechanism 3 to lift and lower, and further drive the rotary drill bit 8 to lift and lower. The operation is simple.

[0056] Reference Figure 3 and Figure 4To facilitate securing the drill bit 8 at the desired height after lifting, the first drive motor 44 is a servo motor. When the servo motor is powered on, its output shaft has a self-locking function when the servo motor is turned off. This means that the servo motor's output shaft is difficult to rotate. Furthermore, a brake is installed on the servo motor to prevent the servo motor from self-locking due to unexpected situations such as power outages. Thus, when the first drive motor 44 is activated to raise and lower the drill bit 8 to the desired height, the first drive motor 44 is controlled to lock, securing the drill bit 8 at this height. At this point, the entire mechanism is less likely to fall due to its own gravity, ensuring a relatively stable state of the drill bit 8 at the desired height. The servo motor controls the first chain 43 to prevent it from performing a full rotation.

[0057] Reference Figure 4 The rotating mechanism 3 includes a lifting plate 31 fixedly connected to a pair of first chains 43. The lifting plate 31 is hollow and has openings at both ends. Sealing boxes 32 are fixedly connected to the openings at both ends of the lifting plate 31 to seal the lifting plate 31. Each sealing box 32 is fixedly connected to a connecting rod 33 on a side away from the first support rod 11. The connecting rod 33 is arranged horizontally in a direction close to the rotary drilling bit 8. The connecting rod 33 is hollow and communicates with the sealing box 32.

[0058] A rotating shaft 34 is fixedly connected to a side of each connecting plate 22 away from the rotary drilling bit 8. An end of each rotating shaft 34 close to the connecting rod 33 penetrates into the interior of the connecting rod 33, and the rotating shaft 34 is rotatably connected to the two side walls of the connecting rod 33 through bearings.

[0059] Each rotating shaft 34 is fixedly connected to a second sprocket 35 on the side wall inside the connecting rod 33, and a pair of second drive motors 37 are fixedly connected to an inner side wall of the lifting plate 31. The output shaft of each second drive motor 37 is set in the direction of the sealing box 32 closer to it, and another second sprocket 35 is fixedly connected to the output shaft of the second drive motor 37. A second chain 36 is installed between the second sprocket 35 on each second drive motor 37 and the second sprocket 35 on the corresponding rotating shaft 34.

[0060] When the second drive motors 37 are started synchronously, the second drive motors 37 drive the second sprocket 35 and the second chain 36 to rotate, thereby driving the pair of rotating shafts 34 to rotate synchronously and in the same direction. The rotation of the rotating shafts 34 can drive the rotary drill bit 8 to rotate.

[0061] In order to facilitate the rotary drill bit 8 to rotate to a desired angle and keep the angle fixed, the second drive motor 37 is also a servo motor.

[0062] Reference Figure 2A pair of crawlers 5 are provided at the lower end of the support frame 1, toward the direction of the rotary drill bit 8. This facilitates the movement of the auxiliary device and helps maintain the overall balance of the auxiliary device. A counterweight 6 is fixedly connected to the upper surface of the support block 14, which also serves to maintain the balance of the auxiliary device.

[0063] Example 2:

[0064] The embodiment of the present application discloses an auxiliary device for repairing a rotary drilling drill bit. Figure 5 , which is different from the first embodiment in that the fixing assembly 2 includes a pair of arc-shaped clamping rings 211 for clamping the rotary drilling bit 8. The two ends of the pair of clamping rings 211 are connected by bolts and nuts, so that the rotary drilling bit 8 is fixed between the pair of clamping rings 211. The upper surface of each clamping ring 211 is fixedly connected to a connecting plate 22, and one side of one connecting plate 22 is hingedly connected to a first reinforcement ring 23, and the other side is hingedly connected to a second reinforcement ring 24. Figure 6 The lower surface of the first reinforcement ring 23 is fixedly connected to another connecting plate 22.

[0065] Reference Figure 6 The first reinforcement ring 23 and the second reinforcement ring 24 are connected to a reinforcement assembly 7, and the reinforcement assembly 7 includes a mounting plate 71 fixedly connected to the free end of the first reinforcement ring 23, and the mounting plate 71 protrudes radially outward along the first reinforcement rod 23. A through hole 72 is provided on the mounting plate 71, and a guide wheel 73 is rotatably connected to the side of the mounting plate 71 away from the second reinforcement ring 24. The guide wheel 73 is arranged below the through hole 72. A winding wheel 74 is fixedly connected to the side wall of the rotating shaft 34 near the guide wheel 73, and a steel wire rope 75 is fixedly connected to the end of the second reinforcement ring 24 near the through hole 72. The steel wire rope 75 passes through the through hole 72, is guided around the guide wheel 73, and is then wound around the winding wheel 74 to be wound up.

[0066] When the rotary drill bit 8 is arranged in a vertical direction, the steel wire rope 75 is in a relaxed state, which facilitates the installation of the rotary drill bit 8 between the first reinforcement ring 23 and the second reinforcement ring 24 .

[0067] The first reinforcement ring 23 and the second reinforcement ring 24 are both made of elastic material, or the second reinforcement ring 24 includes a section of elastic rod 241 and a transition rod 242 made of a hard material fixedly connected to both ends of the elastic rod 241. In this embodiment, the second reinforcement ring 24 includes a section of elastic rod 241 as an example.

[0068] When the rotating mechanism 3 drives the rotating shaft 34 to rotate, the rotating shaft 34 rotates, thereby driving the winding wheel 74 to rotate. The rotation of the winding wheel 74 drives the wire rope 75 to reel in until the wire rope 75 is in a tensioned state. Then the rotating shaft 34 continues to rotate, driving the wire rope 75 to pull the second reinforcement ring 24 toward the mounting plate 71. At this time, the elastic rod 241 is stretched, and as the rotating mechanism 3 drives the rotary drill bit 8 to rotate, the reinforcement assembly 7 controls the first reinforcement ring 23 and the second reinforcement ring 24 to gradually clamp the rotary drill bit 8, thereby reducing the occurrence of the rotary drill bit 8 falling during the rotation process.

[0069] In order to prevent the reinforcement assembly 7 from being damaged, the rotary drill bit 8 is controlled to rotate from a vertical state around the axis of the rotation shaft 34 within one hundred and eighty degrees.

[0070] Compared with the first embodiment, when the rotary drill bit 8 needs to be installed, the first embodiment needs to squeeze the rotary drill bit 8 between the two pairs of clamping rings 211. Although the first reinforcement ring 23 and the second reinforcement ring 24 are tough, compared with the present embodiment, the rotary drill bit 8 only needs to be squeezed between the pair of clamping rings 211, which is convenient for clamping and installing the rotary drill bit 8; and the reinforcement assembly 7 has the function of pre-clamping the rotary drill bit 8. As the rotating shaft 34 rotates, the wire rope 75 is gradually wound up, thereby driving the first reinforcement ring 23 and the second reinforcement ring 24 to gradually clamp the rotary drill bit 8, reducing the possibility of the rotary drill bit 8 being easily thrown off during rotation.

[0071] Example 3:

[0072] The embodiment of the present application discloses an auxiliary device for repairing a rotary drilling drill bit. Figure 7 The difference from Example 2 is that a clamping assembly 9 is connected between the first reinforcement ring 23 and the second reinforcement ring 24. When the rotary drilling bit 8 is installed between the first reinforcement ring 23 and the second reinforcement ring 24, the clamping assembly 9 controls the first reinforcement ring 23 and the second reinforcement ring 24 to initially clamp the rotary drilling bit 8.

[0073] Reference Figure 7 and Figure 8 The clamping assembly 9 includes a first support block 91 fixed to the upper surface of the first reinforcement ring 23 and a second support block 92 fixed to the upper surface of the second reinforcement ring 24. The first support block 91 is provided with a plug hole 911 passing through the first support block 91 on a side close to the second support block 92, and the second support block 92 is fixedly connected to a mounting rod 93 passing through the plug hole 911 on a side close to the first support block 91.

[0074] Mounting rod 93 is a threaded rod, and is threadedly connected to a connecting block 96 on the upper mounting rod 93. Connecting block 96 is located on the side of first support block 91 away from second support block 92. A transition block 95 is rotatably connected to the side of connecting block 96 near first support block 91, and transition block 95 is penetrated by mounting rod 93. A spring 94 is sleeved on the outer side of mounting rod 93 and located between first support block 91 and transition block 95. One end of spring 94 is fixedly connected to first support block 91, and the other end is fixedly connected to transition block 95. The diameter of insertion hole 911 is larger than that of mounting rod 93, so that insertion hole 911 does not affect the movement of mounting rod 93 within insertion hole 911.

[0075] When the rotary drilling bit 8 is installed between the first reinforcement ring 23 and the second reinforcement ring 24, the spring 94 is in a compressed state. At this time, the first support block 91 and the second support block 92 tend to approach each other under the action of the spring 94, and the first support block 91 and the second support block 92 drive the first reinforcement ring 23 and the second reinforcement ring 24 to approach each other, thereby preliminarily clamping the rotary drilling bit 8 between the first reinforcement ring 23 and the second reinforcement ring 24.

[0076] When it is necessary to install or remove the rotary drill bit 8 between the first reinforcement ring 23 and the second reinforcement ring 24, the second reinforcement ring 24 is rotated in the direction away from the first reinforcement ring 23. At this time, the second support block 92 moves in the direction away from the first support block 91. The movement of the second support block 92 drives the installation rod 93 to move in the direction away from the first support block 91. The movement of the installation rod 93 drives the transition block 95 and the connecting block 96 to move in the direction close to the first support block 91. At this time, the spring 94 is further compressed, and the area between the first reinforcement ring 23 and the second reinforcement ring 24 is increased, which facilitates the installation or removal of the rotary drill bit 8 between the first reinforcement ring 23 and the second reinforcement ring 24.

[0077] The threaded connection between the connecting block 96 and the mounting rod 93 facilitates adjustment of the degree to which the first reinforcement ring 23 and the second reinforcement ring 24 clamp the rotary drill bit 8. When the connecting block 96 is screwed to move the connecting block 96 toward the first support block 91, the spring 94 is further compressed, further clamping the first reinforcement ring 23 and the second reinforcement ring 24 against the rotary drill bit 8. Conversely, when the connecting block 96 is screwed to move the connecting block 96 away from the first support block 91, the compression of the spring 94 decreases, reducing the force with which the first reinforcement ring 23 and the second reinforcement ring 24 clamp the rotary drill bit 8.

[0078] In view of the above embodiment, the present application further discloses a construction method for repairing a rotary drilling bit auxiliary device, comprising the following steps:

[0079] (1) Manpower pushes the auxiliary device to the designated location on the construction site and waits;

[0080] (2) According to the first embodiment, this step is: loosen the bolts and nuts between each pair of clamping rings 211, lower the rotary drilling bit 8 that needs to be repaired or replaced between the pair of clamping rings 211 by a crane, and lock the pair of clamping rings 211 by the bolts and nuts, thereby fixing the rotary drilling bit 8 between the pair of clamping rings 211;

[0081] According to the second and third embodiments, this step is as follows: loosen the bolts and nuts between the pair of clamping rings 211, rotate the first reinforcement ring 23 and the second reinforcement ring 24 in a direction away from each other, lower the rotary drill bit 8 that needs to be repaired or replaced with teeth by a crane until it passes between the first reinforcement ring 23 and the second reinforcement ring 24, and allow the rotary drill bit 8 to enter between the pair of clamping rings 211, and then fix the rotary drill bit 8 between the pair of clamping rings 211 with the bolts and nuts;

[0082] (3) Control the crane to separate from the rotary drill bit 8 and evacuate the crane from the lifting area;

[0083] (4) Start the first drive motor 44 to drive the rotating mechanism 3 and the rotary drill bit 8 to a height suitable for the rotation of the rotary drill bit 8, and then start the second drive motor 37 to control the rotary drill bit 8 to rotate in the air until the rotary drill bit 8 needs to be repaired or the teeth are changed, which is convenient for the maintenance personnel to operate. At this time, the height of the rotary drill bit 8 may not match the height of the maintenance personnel;

[0084] (5) Restart the first drive motor 44 to drive the rotating mechanism 3 and the rotary drill bit 8 to move up and down until the rotary drill bit 8 reaches a height that is convenient for maintenance personnel to operate;

[0085] (6) The maintenance personnel will carry out the next step of maintenance;

[0086] (7) After the maintenance is completed, the first drive motor 44 is started to drive the rotating mechanism 3 and the rotary drill bit 8 to a height suitable for the rotation of the rotary drill bit 8, and then the second drive motor 37 is started to drive the rotary drill bit to rotate until the rotary drill bit 8 is in a vertical state;

[0087] (8) According to the first embodiment, this step is: loosen the bolts and nuts on the clamping rings 211 so that the rotary drill bit 8 is separated from between the two pairs of clamping rings 211 and falls to the ground;

[0088] According to the second and third embodiments, this step is as follows: pulling the first reinforcement ring 23 and the second reinforcement ring 24 away from each other, and loosening the bolts and nuts on the clamping ring 211, so that the rotary drilling drill bit 8 is separated from between the first reinforcement ring 23 and the second reinforcement ring 24, and at the same time, is separated from between the pair of clamping rings 211 and falls to the ground;

[0089] (9) The rotary drilling bit 8 is waiting to be hoisted and the next construction process is continued.

[0090] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An auxiliary device for repairing a rotary drilling bit, characterized in that: It comprises a fixing assembly (2) for clamping and fixing a rotary drilling bit (8), the fixing assembly (2) is connected to a rotating mechanism (3), the rotating mechanism (3) is connected to a lifting mechanism (4), and the lifting mechanism (4) is mounted on a support frame (1); A fixing assembly (2): comprising at least one pair of clamping rings (211), wherein each end of the pair of clamping rings (211) is fixedly connected to each other; A lifting mechanism (4): comprising at least one first chain (43) vertically mounted on a support frame, the first chain (43) being fixedly connected to one side of the rotating mechanism (3), and the first chain (43) being driven by a servo motor; The rotating mechanism (3) comprises a pair of rotating shafts (34) fixed to the clamping ring (211), each rotating shaft (34) being connected to a servo motor via a second chain (36); The rotating mechanism (3) includes a hollow lifting plate (31) and a pair of hollow connecting rods (33), the pair of connecting rods (33) are connected to and fixed at both ends of the lifting plate (31), each rotating shaft (34) is inserted into the interior of the corresponding connecting rod (33) and connected to the second chain (36), and the servo motor connected to the second chain (36) is installed inside the lifting plate (31); A connecting plate (22) is fixed to the upper surface of one of the clamping rings (211), and a first reinforcement ring (23) and a second reinforcement ring (24) are hingedly connected to the two side surfaces of the connecting plate (22), and the first reinforcement ring (23) and the second reinforcement ring (24) are connected to a reinforcement assembly (7) that rotates through a rotating shaft (34) to pull the free ends of the first reinforcement ring (23) and the second reinforcement ring (24) to move toward each other to clamp the rotary drilling drill bit (8); The reinforcement assembly (7) includes a mounting plate (71) fixed to one end of the first reinforcement ring (23) away from the connecting plate (22), a through hole (72) is provided on the mounting plate (71), a winding wheel (74) is fixedly sleeved on the side wall of the rotating shaft (34) near the through hole (72), and a steel wire rope (75) is fixed to one end of the second reinforcement ring (24) near the through hole (72), and the steel wire rope (75) passes through the through hole (72) and is fixed to the side wall of the winding wheel (74); A first support block (91) is fixed to the upper surface of the first reinforcement ring (23), and a second support block (92) is fixed to the upper surface of the second reinforcement ring (24). A plug hole (911) is provided on one side of the first support block (91), and a mounting rod (93) passing through the plug hole (911) is fixed on a side of the second support block (92) close to the first support block (91). A connecting block (96) is connected to the mounting rod (93), and the connecting block (96) is located on a side of the first support block (91) away from the second support block (92). A spring (94) in a compressed state is sleeved on the outer side of the mounting rod (93), and one end of the spring (94) is fixed to the connecting block (96), and the other end is fixed to the first support block (91).

2. The auxiliary device for repairing a rotary drilling bit according to claim 1, characterized in that: The second reinforcement ring (24) comprises at least one section of elastic rod (241).

3. The auxiliary device for repairing a rotary drilling bit according to claim 1, characterized in that: The mounting rod (93) is a threaded rod, and the connecting block (96) is threadedly connected to the mounting rod (93). A side of the connecting block (96) close to the first support block (91) is rotatably connected to a transition block (95) penetrated by the mounting rod (93), and an end of the spring (94) away from the first support block (91) is fixed to the transition block (95).

4. A construction method for a rotary drilling bit auxiliary device for repairing a rotary drilling bit according to any one of claims 1 to 3, characterized in that: The steps include: 1) Push the auxiliary device to the designated location on the construction site and wait; 2) Loosen the bolts and nuts between the pair of clamping rings (211), lower the rotary drill bit (8) that needs to be repaired or replaced with teeth between the pair of clamping rings (211) by a crane, and lock the pair of clamping rings (211) with the bolts and nuts; 3) Control the crane to separate from the rotary drilling bit (8) and evacuate the crane from the lifting area; 4) starting the lifting structure to drive the rotating mechanism (3) and the rotary drill bit (8) to rise and fall to a height suitable for the rotation of the rotary drill bit (8), then starting the rotating mechanism (3) to control the rotary drill bit (8) to rotate in the air until the rotary drill bit (8) needs to be repaired or the teeth are changed, which is convenient for maintenance personnel to operate, and controlling the servo motor to lock the rotation angle of the rotary drill bit (8) at this time; 5) Start the lifting mechanism (4) to drive the rotating mechanism (3) and the rotary drill bit (8) to move up and down until the rotary drill bit (8) reaches a height that is convenient for maintenance personnel to operate, and control the servo motor to lock the height of the rotary drill bit (8) at this time; 6) The maintenance personnel will carry out the next step of maintenance.

5. The construction method of the auxiliary device for repairing a rotary drilling bit according to claim 4, characterized in that: Add the following steps between step 1) and step 2): The first reinforcement ring (23) and the second reinforcement ring (24) are rotated in directions away from each other, and the rotary drilling bit (8) that needs to be repaired or the teeth are lowered by a crane to pass between the first reinforcement ring (23) and the second reinforcement ring (24). The rotation shaft (34) is rotated to control the reinforcement assembly (7) to pull the free ends of the first reinforcement ring (23) and the second reinforcement ring (24) to move toward each other and clamp the rotary drilling bit (8).

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