Reaming equipment for deep well pipe

Abstract

The utility model discloses and provides reaming equipment for a deep well pipe, which comprises a mechanical stabilizing assembly, an equipment fixing assembly and a grinding and cutting assembly are arranged in the mechanical stabilizing assembly, and the equipment fixing assembly fixes the grinding and cutting assembly at the position of a grinding and cutting area; the abrasion cutting assembly comprises an abrasion cutting wheel, and the abrasion cutting assembly can drive the abrasion cutting wheel to conduct abrasion cutting at any angle in the position of the abrasion cutting area. The equipment fixing assembly fixes the grinding and cutting assembly to the position of a grinding and cutting area, and it is guaranteed that the equipment is kept stable in the working process. The grinding and cutting assembly controls the grinding and cutting wheel to carry out accurate grinding and cutting in the grinding and cutting area, so that the grinding and cutting wheel can carry out continuous grinding and cutting in the advancing direction in the position of the grinding and cutting area, and the grinding and cutting wheel can be controlled to rotate to carry out repeated grinding and cutting; by means of the design, the contact area in the grinding and cutting process is reduced, more accurate grinding and cutting are provided, the part needing to be reserved cannot be damaged, and therefore the grinding and cutting speed of the device is higher, and the efficiency is higher.

Description

Technical Field

[0001] This utility model belongs to the field of construction and drilling equipment technology, and in particular relates to a hole enlargement device for locally grinding and cutting deep well pipes. Background Technology

[0002] With the continuous advancement of geological and mineral resource exploration technologies, drilling operations are gradually expanding to deeper strata. In this process, the geological environment faced by exploration operations is becoming increasingly complex, and the technical difficulty of drilling is also increasing. Especially in deep and ultra-deep well drilling operations, as the well depth increases, the underground geological conditions become more complex, and the physical properties of the formation change significantly, further exacerbating the challenges of drilling operations. During the drilling process of deep and ultra-deep wells, as the well depth gradually increases, the hardness and plasticity of the rock increase significantly, greatly limiting the cutting performance of the drill bit and noticeably slowing down the drilling speed.

[0003] Traditional drilling technologies and equipment cannot fully meet the needs of local grinding and enlarging of well casing. Therefore, it is necessary to rely on more advanced drilling technologies and innovative grinding and cutting equipment to effectively solve the problem of selective grinding of deep well casing, avoiding the parts that need to be preserved, and ensuring the stability, safety and efficiency of the drilling process.

[0004] Chinese patent document CN106869799A discloses a hydraulic rotary reamer for wear-resistant rock formations, mainly composed of internal and external threads, drilling fluid channels, a spinning drill bit, gears, drilling fluid orifices, a turbine, a plug, a drive shaft, a power chamber, sealed bearings, and toothed cutting edges. This invention addresses the problems of uneven wellbore surfaces in deep, dense formation drilling operations, which hinders subsequent construction processes such as tripping and casing installation. The hydraulic rotary reamer for wear-resistant rock formations utilizes high-pressure, high-speed drilling fluid to power a turbine within the power chamber. The turbine drives gears on the drive shaft, which in turn rotate the spinning drill bit. The toothed cutting edges on the upper and lower surfaces of the spinning drill bit grind and smooth the uneven wellbore, creating a smooth surface.

[0005] In the above solution, although the installation of this tool can eliminate the problem of uneven wellbore, reduce the accident rate in later construction, save drilling time and improve drilling efficiency, there are still problems in actual use, such as large contact area, high resistance and low grinding efficiency. In addition, it can only perform unidirectional downward grinding action, cannot selectively grind, and cannot avoid the parts that need to be retained, resulting in low grinding efficiency.

[0006] Therefore, in order to improve the complex grinding conditions during grinding, it is necessary to develop a new reaming device for deep well pipes that can provide more precise grinding, reduce the contact area during the grinding process, avoid damage to the retained parts, and be faster and more efficient. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a more precise grinding and cutting device that reduces the contact area during the grinding and cutting process, does not damage the retained part, and is faster and more efficient for deep well pipe enlargement.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: it includes a mechanical stabilizing component, and the mechanical stabilizing component is provided with a device fixing component and a grinding component. The device fixing component fixes the grinding component at the grinding area position. The grinding component includes a grinding wheel, and the grinding component can drive the grinding wheel to perform grinding at any angle at the grinding area position.

[0009] Mechanical stabilization components protect the equipment by fixing and supporting it, reducing external interference and internal vibrations, and ensuring stability during operation, thereby improving processing accuracy, efficiency, and safety. Equipment fixing components secure the grinding assembly to the grinding area, ensuring stability during operation. The grinding assembly controls the grinding wheel to perform precise grinding within the grinding area, allowing it to not only continuously grind in the forward direction but also rotate clockwise and counterclockwise for repeated grinding. This design reduces the contact area during grinding, providing more precise grinding without damaging the desired parts, resulting in faster and more efficient grinding.

[0010] Preferably, the grinding assembly includes a grinding power section, a grinding forward and backward moving section, and a grinding rotation section; the grinding wheel is disposed in the grinding power section, and the grinding forward and backward moving section and the grinding rotation section are connected to the grinding power section.

[0011] The grinding power unit is the core drive component of the entire grinding assembly, providing power to the grinding wheel and enabling it to work efficiently and continuously during the grinding process. The grinding wheel is fixed within the grinding power unit, and through its drive mechanism, it performs precise cutting operations within the grinding area. The forward and backward movement unit is connected to the grinding power unit and controls the forward and backward movement of the grinding wheel. By controlling the forward and backward movement unit, the grinding assembly can adjust the path of the grinding wheel as needed, performing linear or repetitive forward and backward grinding to ensure that the workpiece receives uniform and precise processing at the set grinding position. Simultaneously, the grinding rotation unit is also connected to the grinding power unit, enabling the grinding wheel to rotate. Driven by the grinding rotation unit, the grinding wheel can rotate within a certain angle range, allowing for detailed localized grinding within complex or narrow grinding areas. This rotation function allows the grinding assembly to adapt to more varied processing requirements, improving the overall system's flexibility and operability.

[0012] Preferably, the grinding and cutting power unit includes a motor, a gearbox, a power output wheel, a grinding and cutting wheel, and a positioning wheel; the motor provides power to the gearbox; the gearbox is connected to the power output wheel and drives the power output wheel to rotate the grinding and cutting wheel, and the positioning wheel is engaged inside the grinding and cutting wheel.

[0013] The gearbox is connected to the power output wheel and is responsible for appropriately decelerating or accelerating the power provided by the motor and transmitting it. The gearbox not only regulates the power output rate but also ensures stable torque during the grinding process, thereby achieving a smoother and more efficient grinding operation. The power output wheel transmits the mechanical energy from the gearbox to the grinding wheel, enabling the grinding wheel to rotate within the grinding area at a set speed and direction. During this process, the power output wheel, through precise connection and cooperation, ensures that the grinding wheel can run stably along the predetermined path and speed. The grinding wheel is used for the actual grinding work, while the positioning wheel ensures the precise positioning of the grinding wheel throughout the operation, increases the stability of the grinding wheel during rotation, avoids processing errors caused by positional deviations, and further improves grinding accuracy and processing quality.

[0014] Preferably, the grinding wheel includes a grinding block, a stabilizing groove, and a power output tooth. The grinding block is disposed on the outer edge of the grinding wheel, and a stabilizing groove is disposed inside the grinding block. A power output tooth is connected inside the stabilizing groove. The positioning wheel is engaged in the stabilizing groove.

[0015] The grinding block, located on the outer edge of the grinding wheel, is the part that directly contacts the workpiece surface and performs the grinding. The grinding block is made of a mixture of diamond and hexagonal boron nitride abrasive. Diamond is excellent for grinding concrete but intolerant to iron, while cubic boron nitride is excellent for grinding metals. This ensures sufficient hardness and wear resistance during processing, effectively removing material from the workpiece surface and maintaining sharpness over extended use, thus providing efficient and uniform grinding results. A stabilizing groove designed inside the grinding block improves the stability of the grinding wheel, reducing potential deviations or vibrations during operation and minimizing grinding errors and uneven processing caused by unstable movement. Furthermore, a power output tooth is connected inside the stabilizing groove. This power output tooth is a key component connecting to the power output wheel, allowing the grinding wheel to receive rotational power and transmit it to the grinding block for the actual grinding operation. The combination of the power output tooth and the stabilizing groove design avoids inaccurate or inefficient grinding caused by uneven or unstable power transmission, ensuring efficient and stable torque transmission of the grinding wheel.

[0016] Preferably, the forward and backward moving part of the grinding includes a forward motor, a forward gear, a forward rack, a guide rail, an upper base, and a lower base; the lower base is disposed at the bottom of the mechanical stabilizing component, the guide rail is disposed between the lower base and the upper base, the forward rack is fixed on the guide rail, the forward rack meshes with the forward gear, and the forward gear is connected to the forward motor.

[0017] Preferably, the grinding and cutting rotating part includes a rotary motor, a rotary internal gear, a rotary drive wheel, and a rotary support shaft; the rotary support shaft is connected to the guide rail, the rotary internal gear is fixed on the rotary support shaft, the rotary internal gear meshes with the rotary drive wheel, and the rotary drive wheel is connected to the rotary motor.

[0018] The grinding and cutting moving parts and the grinding and cutting rotating parts work together through the cooperation of various internal mechanical components to form a highly efficient and precise motion system. This ensures that the grinding and cutting equipment can move accurately in the front-back direction and rotate at any angle in the left and right directions within the die-cutting area. It supports different grinding modes and operational requirements, thereby optimizing the accuracy and efficiency of the entire grinding and cutting process. This allows the equipment to not only maintain high stability during processing, but also to flexibly adapt to different working environments and operational requirements.

[0019] Preferably, the mechanical stabilizing assembly includes a housing, a stabilizing wheel, a spring seat, a damping block, and a housing nut; the housing includes an upper supporting housing and a lower supporting housing, which are connected by the housing nut; the stabilizing wheel is installed inside the upper supporting housing, and the damping block is wrapped around the outer edge of the stabilizing wheel, which is connected to the spring seat.

[0020] The mechanical stabilization assembly, through the precise design and coordination of components such as the housing, stabilizing wheel, elastic seat, damping block, and housing nut, forms a highly efficient stabilization system, ensuring that the entire grinding and cutting system maintains extremely high precision and stability during operation. The housing provides robust external protection and support for the assembly, the stabilizing wheel plays a role in precise guidance and support, and the damping block and elastic seat effectively absorb and mitigate vibrations and impacts during operation, reducing the negative impact of vibrations on the system. This effectively improves the working efficiency, processing accuracy, and service life of the grinding and cutting equipment, ensuring the stability and reliability of grinding and cutting.

[0021] Preferably, the stabilizing wheel is snapped onto the outer edge of the equipment fixing assembly, and the damping block and the elastic seat play a buffering role between the stabilizing wheel and the equipment fixing assembly.

[0022] The stabilizing wheel provides support for the fixed components of the equipment, while the damping block and the elastic seat play a crucial buffering role between them. The damping block is responsible for absorbing vibration and impact, while the elastic seat further enhances the buffering effect, ensuring the stability and accuracy of the system during operation. This improves the working efficiency of the grinding and cutting system and effectively reduces mechanical failures and accuracy errors caused by vibration.

[0023] Preferably, the device fixing assembly includes a fixed motor, a fixed driving wheel, a fixed driven wheel, a fixed drive shaft, a fixed cam, and a fixed foot; the fixed motor drives the fixed driving wheel to rotate, the fixed driving wheel is meshed with the fixed driven wheel, the fixed drive shaft is disposed inside the fixed driven wheel, the fixed cam is connected above the fixed drive shaft, and the fixed foot is disposed on the fixed cam.

[0024] A fixed motor provides power to drive a fixed drive wheel to rotate; the fixed drive wheel transmits power to a fixed drive shaft, which then transmits power to a fixed cam to control the operation of other moving parts; finally, the fixed cam drives the fixed foot through its designed motion trajectory, so that the entire system maintains a stable position and support during operation, improving the grinding accuracy and grinding efficiency of the equipment.

[0025] Preferably, the position of the grinding area is set by the control part of the digital programmable control system through programming, and the digital programmable control system is connected to the fixed component of the equipment through a signal connection.

[0026] By programming, the specific position of the grinding tool in the working area is determined. These positions are set based on the equipment's coordinate system or reference points. The system can accurately calculate the starting and ending positions of the grinding tool in each work cycle and adjust the equipment's movement trajectory according to these positions. The precise control and real-time feedback mechanism enable the equipment to complete tasks efficiently and accurately during operation, reducing rework and scrap caused by positioning errors or operational mistakes, and effectively improving grinding efficiency. Attached Figure Description

[0027] The following is a detailed description of the embodiments of this utility model in conjunction with the accompanying drawings:

[0028] Figure 1 This is a side view of the present invention;

[0029] Figure 2 This is the front view of the present invention;

[0030] Figure 3 This is a top view of the present invention;

[0031] Figure 4 for Figure 2 Schematic diagram of the structure of the intermediate grinding cutting wheel;

[0032] Figure 5 for Figure 3 A schematic diagram of the guide rail structure in the moving part before and after intermediate grinding and cutting;

[0033] The components are: 1-Mechanical stabilization assembly, 101-Outer shell, 102-Stabilizing wheel, 103-Elastomer seat, 104-Damping block, 105-Outer shell nut, 10101-Upper support shell, 10102-Lower support shell; 2-Equipment fixing assembly, 201-Fixing motor, 202-Fixing drive wheel, 203-Fixing driven wheel, 204-Fixing drive shaft, 205-Fixing cam, 206-Fixing foot; 3-Grinding assembly, 301-Grinding power unit, 30101-Motor, 30102-Gearbox, 30103-Power unit. Output wheel, 30104-positioning wheel, 302-grinding forward and backward moving part, 30201-forward motor, 30202-forward gear, 30203-forward rack, 30204-guide rail, 30205-upper base, 30206-lower base, 303-grinding rotating part, 30301-rotation motor, 30302-rotation internal gear, 30303-rotation drive wheel, 30304-rotation support shaft, 4-grinding area position, 5-grinding wheel, 501-grinding block, 502-stabilizing groove, 503-power output tooth. Detailed Implementation

[0034] As attached Figures 1-5As shown, an enlarging device for deep well pipes according to this embodiment includes a mechanical stabilization component 1. The mechanical stabilization component 1 is characterized by having an equipment fixing component 2 and a grinding component 3. The equipment fixing component 1 fixes the grinding component 3 at the grinding area position 4. The grinding component 3 includes a grinding wheel 5, which can drive the grinding wheel 5 to perform grinding at any angle at the grinding area position 4.

[0035] like Figure 1 As shown, the mechanical stabilizing assembly 1 includes a housing 101, a stabilizing wheel 102, a spring seat 103, a damping block 104, and a housing nut 105. The housing 101 includes an upper supporting housing 10101 and a lower supporting housing 10102, which are connected by the housing nut 105. The stabilizing wheel 102 is installed inside the upper supporting housing 10101, and the outer edge of the stabilizing wheel 102 is wrapped with a damping block 104, which is connected to the spring seat 103.

[0036] Specifically, such as Figure 3 As shown, the stabilizing wheel 102 is snapped onto the outer edge of the equipment fixing component 2, and the damping block 104 and the elastic seat 103 play a buffering role between the stabilizing wheel 102 and the equipment fixing component 2.

[0037] like Figure 1 , Figure 2 As shown, the equipment fixing assembly 2 includes a fixed motor 201, a fixed drive wheel 202, a fixed driven wheel 203, a fixed drive shaft 204, a fixed cam 205, and a fixing foot 206. The fixed motor 201 drives the fixed drive wheel 202 to rotate. The fixed drive wheel 202 is meshed with the fixed driven wheel 203. The fixed drive shaft 204 is installed inside the fixed driven wheel 203. The fixed cam 206 is connected above the fixed drive shaft 204. The fixing foot 206 is installed on the fixed cam 205.

[0038] The grinding area position 4 is set by the digital programmable control system through programming, and the digital programmable control system is connected to the equipment fixing component 4 through a signal.

[0039] The grinding and cutting assembly 3 includes a grinding and cutting power part 301, a grinding and cutting forward and backward moving part 302, and a grinding and cutting rotating part 303; the grinding and cutting wheel 5 is disposed in the grinding and cutting power part 301, and the grinding and cutting forward and backward moving part 302 and the grinding and cutting rotating part 303 are connected to the grinding and cutting power part 301.

[0040] The grinding and cutting power unit 301 includes a motor 30101, a gearbox 30102, a power output wheel 30103, a grinding and cutting wheel 5, and a positioning wheel 30104; the motor 30101 provides power to the gearbox 30102; the gearbox 30102 is connected to the power output wheel 30103 and drives the power output wheel 30103 to drive the grinding and cutting wheel 5 to rotate, and the positioning wheel 30104 is locked inside the grinding and cutting wheel 5.

[0041] Specifically, such as Figure 4 As shown, the grinding wheel 5 includes a grinding block 501, a stabilizing groove 502, and a power output tooth 503. The grinding block 501 is disposed on the outer edge of the grinding wheel 5, and a stabilizing groove 502 is disposed inside the grinding block 501. The power output tooth 503 is connected inside the stabilizing groove 502. The positioning wheel 30104 is engaged in the stabilizing groove 502. It should be noted that in this embodiment, the grinding block 501 is made of a mixture of diamond and hexagonal boron nitride abrasive.

[0042] like Figure 3 , Figure 5 As shown, the grinding and cutting forward and backward moving part 302 includes a forward motor 30201, a forward gear 30202, a forward rack 30203, a guide rail 30204, an upper base 30205, and a lower base 30206. The lower base 30206 is located at the bottom of the mechanical stabilizing component 1. A guide rail 30204 is provided between the lower base 30206 and the upper base 30205. A forward rack 30203 is fixed on the guide rail 30204. The forward rack 30203 meshes with the forward gear 30202. The forward gear 30202 is connected to the forward motor 30201.

[0043] The grinding and cutting rotating part 303 includes a rotating motor 30301, a rotating internal gear 30302, a rotating drive wheel 30303, and a rotating support shaft 30304. In this embodiment, the rotating support shaft 30304 is disposed on the lower support housing 10102. The rotating support shaft 30304 is connected to the guide rail 30204, and the rotating internal gear 30302 is fixed on the rotating support shaft 30304. The rotating drive wheel 30303 meshes with the outer periphery of the rotating internal gear 30302. The rotating drive wheel 30303 is connected to the rotating motor 30301.

[0044] In practical use, first, the grinding area position 4 is set by programming, the equipment fixing component 2 is started, the equipment fixing component 2 is moved to the grinding area position 4, and the fixing foot 206 is started to make the equipment firmly fixed on the grinding area position 4; then the grinding component 3 is started to prepare for the grinding action, the grinding back and forth moving part 302 in the grinding component 3 is started to control the grinding wheel 5 to start grinding back and forth. If necessary, it can be repeatedly ground back and forth until the set position is reached. Then, the grinding rotation part 303 in the grinding component 3 is started to control the grinding wheel 5 to rotate and grind. If necessary, it can be repeatedly ground in both directions within a local angle until the grinding is completed.

[0045] It should be noted that a stabilizing wheel 102 is installed inside the upper support housing 10101. The stabilizing wheel 102 is an adaptive stabilizing wheel. When the equipment moves up and down, the stabilizing wheel 102 and the damping block 104 can automatically adjust the opening amplitude under the action of the elastic rubber 103, so that the equipment fixing component 2 can move up and down stably. At the same time, the damping block 103 can prevent the equipment fixing component 2 from falling down rapidly. The housing nut 105 is locked after the upper support housing 10101 and the lower support housing 10102 are connected.

[0046] The equipment fixing component 2 is a fixing mechanism that controls the equipment to reach the grinding and cutting area position 4. When the fixing motor 201 is started, it links the fixing drive wheel 202. The fixing drive wheel 202 drives the fixing driven wheel 203 to rotate. The fixing driven wheel 203 drives the fixing drive shaft 204 to rotate, which drives the fixing cam 205 to rotate synchronously. The fixing cam 205 has three protrusions. When the fixing cam 205 rotates, the three protrusions will squeeze the fixing foot 206, forcing the fixing foot 206 to open. According to the set output force, the fixing motor 201 makes the fixing foot 206 firmly fix the equipment in the grinding and cutting area position 4.

[0047] The grinding power section 301 in the grinding assembly 3 is used to output grinding power. After the motor 30101 starts, it drives the gearbox 30102. The gearbox 30102 drives the power output wheel 30103 to make the grinding wheel 5 rotate at high speed. The grinding work is ready. In this embodiment, there are four positioning wheels 30104. The four positioning wheels 30104 are engaged in the stabilizing groove 502 of the grinding teeth 5. The tooth end face presses against the side of the stabilizing groove 502, so that the power input teeth 503 of the grinding wheel 5 accurately meshes with the power output wheel 30103. The grinding wheel 5 rotates stably, and the grinding block 501 on the grinding wheel 5 performs grinding and cutting work.

[0048] Both the grinding power unit 301 and the grinding forward and backward moving part 302 are mounted on a movable base. The movable base includes an upper base 30205 and a lower base 30206. A guide rail 30204 is located between the upper base 30205 and the lower base 30206. The guide rail 30204 is fixed on the rotating support shaft 30304 and guides the forward and backward movement. A forward rack 30203 is fixedly mounted on the guide rail 30204. After the grinding wheel 5 is started, the forward motor 30201 is started. The forward motor 30201 drives the forward gear 30202 to rotate. The forward gear 30202 meshes with the forward rack 30203, driving the upper base 30205 and the lower base 30206 to move forward and backward, performing forward grinding or backward return.

[0049] When the forward and backward moving part 302 reaches the designated position, the grinding rotating part starts; the rotary motor 30301 is started, and after the rotary motor 30301 starts, the rotary drive wheel 30303 rotates in conjunction with it. The rotary drive wheel 30303 drives the rotary internal gear 30302 to rotate, and the rotary support shaft 30304 fixedly connected to the rotary internal gear 30302 rotates accordingly, starting the rotary grinding. The grinding stops after reaching the position set by the program.

[0050] At this point, the grinding and cutting moving part 302 automatically retracts to the origin and stops according to the program settings, and the rotating support shaft 30304 in the grinding and cutting rotating part 303 also automatically returns to the origin. When the computer detects that they have all returned to the origin, a work cycle is completed.

[0051] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A reaming device for deep well casings, comprising a mechanical stabilizing assembly, characterized in that, The mechanical stabilization component includes an equipment fixing component and a grinding component. The equipment fixing component fixes the grinding component in the grinding area. The grinding component includes a grinding wheel, which can drive the grinding wheel to perform grinding at any angle in the grinding area.

2. The reaming device for deep well casings according to claim 1, characterized in that, The grinding assembly includes a grinding power section, a grinding forward and backward moving section, and a grinding rotation section; the grinding wheel is disposed in the grinding power section, and the grinding forward and backward moving section and the grinding rotation section are connected to the grinding power section.

3. The reaming device for deep well casings according to claim 2, characterized in that, The grinding and cutting power unit includes a motor, a gearbox, a power output wheel, a grinding and cutting wheel, and a positioning wheel; the motor provides power to the gearbox; the gearbox is connected to the power output wheel and drives the power output wheel to rotate the grinding and cutting wheel, and the positioning wheel is engaged inside the grinding and cutting wheel.

4. The reaming device for deep well pipes according to claim 3, characterized in that, The grinding wheel includes a grinding block, a stabilizing groove, and a power output tooth. The grinding block is disposed on the outer edge of the grinding wheel, and a stabilizing groove is disposed inside the grinding block. A power output tooth is connected inside the stabilizing groove. The positioning wheel is engaged in the stabilizing groove. The grinding block is made of a mixture of diamond and hexagonal boron nitride abrasive.

5. The reaming device for deep well pipes according to claim 2, characterized in that, The grinding and cutting moving part includes a forward motor, a forward gear, a forward rack, a guide rail, an upper base, and a lower base; the lower base is located at the bottom of the mechanical stabilizing component, the guide rail is provided between the lower base and the upper base, the forward rack is fixed on the guide rail, the forward rack meshes with the forward gear, and the forward gear is connected to the forward motor.

6. The reaming device for deep well casing according to claim 5, characterized in that, The grinding and cutting rotating part includes a rotary motor, a rotary internal gear, a rotary drive wheel, and a rotary support shaft; the rotary support shaft is connected to the guide rail, the rotary internal gear is fixed on the rotary support shaft, the rotary internal gear meshes with the rotary drive wheel, and the rotary drive wheel is connected to the rotary motor.

7. The reaming device for deep well casings according to claim 1, characterized in that, The mechanical stabilizing assembly includes a housing, a stabilizing wheel, a rubber seat, a damping block, and a housing nut; the housing includes an upper supporting housing and a lower supporting housing, which are connected by the housing nut; the stabilizing wheel is installed inside the upper supporting housing, and the damping block is wrapped around the outer edge of the stabilizing wheel, which is connected to the rubber seat.

8. The reaming device for deep well casing according to claim 7, characterized in that, The stabilizing wheel is snapped onto the outer edge of the equipment fixing assembly, and the damping block and the elastic seat act as a buffer between the stabilizing wheel and the equipment fixing assembly.

9. The reaming device for deep well casings according to claim 1, characterized in that, The device fixing assembly includes a fixed motor, a fixed driving wheel, a fixed driven wheel, a fixed drive shaft, a fixed cam, and a fixed foot; the fixed motor drives the fixed driving wheel to rotate, the fixed driving wheel is meshed with the fixed driven wheel, the fixed drive shaft is disposed inside the fixed driven wheel, the fixed cam is connected above the fixed drive shaft, and the fixed foot is disposed on the fixed cam.

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