Bore wall polishing apparatus and method

Abstract

The application relates to a hole wall polishing device and method, which comprises a driving assembly, a first driving part and a second driving part, the fixed end of the second driving part is connected with the output end of the first driving part, and the first driving part is used for driving the second driving part to move along a first axis; a grinding head assembly comprises a polishing head, the polishing head is connected with the output end of the second driving part, and the second driving part is used for driving the polishing head to move along a first straight line, and the first straight line intersects with the first axis. The hole wall polishing device in the embodiment can improve the polishing efficiency of the hole to be polished, saves time cost and material cost.

Description

Technical Field

[0001] This application relates to the field of grinding equipment technology, and in particular to a hole wall grinding device and method. Background Technology

[0002] In the nuclear power industry, the reheat steam inlet butterfly valve of a nuclear power turbine is equipped with a mounting hole with a depth between 300mm and 500mm. The valve shaft of the butterfly valve passes through the mounting hole and rotates around the axis of the mounting hole.

[0003] The distance between the valve shaft of the butterfly valve and the inner wall of the mounting hole is between 10 and 15 mm. A bearing is installed in the annular gap between the mounting hole and the valve shaft. The bearing is sleeved on the outer circumference of the valve shaft and contacts the wall of the mounting hole to reduce the resistance encountered by the valve shaft when it rotates. In the prior art, the bearing needs to be removed from the valve shaft periodically. However, during the disassembly process, the bearing is prone to scratching the inner wall of the mounting hole. Therefore, after removing the bearing, the area on the inner wall of the mounting hole that has been scratched by the bearing usually needs to be ground.

[0004] In related technologies, a grinding tool is used to grind the damaged area on the inner wall of the mounting hole. The grinding tool includes a drive motor and a grinding head; the output end of the drive motor is connected to the grinding head to drive its rotation. During the grinding process, workers typically hold the grinding tool and insert the grinding head into the annular gap between the mounting hole and the valve shaft of the reheat steam inlet butterfly valve to grind the damaged area on the inner wall of the mounting hole. Using this grinding tool is inefficient, time-consuming, and labor-intensive. Summary of the Invention

[0005] Therefore, it is necessary to propose a hole wall grinding device and method to address the problems of low efficiency, time and labor costs associated with grinding mounting holes using current grinding tools.

[0006] A hole wall grinding device, the hole wall grinding device comprising:

[0007] A drive assembly includes a first drive member and a second drive member, wherein the fixed end of the second drive member is connected to the output end of the first drive member, and the first drive member is used to drive the second drive member to move along a first axis.

[0008] A grinding head assembly includes a grinding head connected to the output end of a second driving member, the second driving member being used to drive the grinding head to move along a first straight line, the first straight line intersecting the first axis.

[0009] In one embodiment, the grinding head assembly further includes a grinding head mounting bracket connected to the output end of the second drive member, the second drive member being used to drive the grinding head mounting bracket to move along the first straight line; the grinding head is rotatably connected to the grinding head mounting bracket.

[0010] In one embodiment, the grinding head includes a plurality of grinding heads arranged along the first axis, and the rotation axis of the grinding head is parallel to the first axis.

[0011] In one embodiment, the grinding head assembly further includes a rotary platform connected to the output end of the first drive member, the first drive member being used to drive the rotary platform to move along the first axis;

[0012] The fixed end of the second driving component is located on the rotating platform, and the grinding head mounting bracket is slidably connected to the rotating platform along the first straight line.

[0013] In one embodiment, the grinding head assembly includes a rotating shaft extending along the first straight line and rotatably connected to the rotating platform about its own central axis;

[0014] The grinding head mounting bracket is sleeved on the outside of the rotating shaft and threadedly connected to the rotating shaft. The output end of the second driving member is connected to the rotating shaft, and the second driving member is used to drive the rotating shaft to rotate.

[0015] In one embodiment, the rotating shaft includes a first shaft segment and a second shaft segment arranged along the first straight line; the grinding head mounting bracket is sleeved on the first shaft segment and threadedly connected to the first shaft segment;

[0016] The grinding head assembly also includes a bevel gear set, which includes a first bevel gear and a second bevel gear. The first bevel gear is sleeved outside the second shaft segment, and the second bevel gear meshes with the first bevel gear for transmission. The output end of the second drive member is connected to the second bevel gear to drive the second bevel gear to rotate around an axis parallel to the first axis.

[0017] In one embodiment, the grinding head assembly further includes a third driving member, the fixed end of which is disposed on the grinding head mounting bracket, and the output end of which is connected to the grinding head. The third driving member is used to drive the grinding head to rotate about an axis parallel to the first axis.

[0018] In one embodiment, the driving assembly further includes a fourth driving member, the output end of which is connected to the fixed end of the first driving member, and the fourth driving member is used to drive the first driving member to rotate around the first axis.

[0019] In one embodiment, the hole wall polishing device includes:

[0020] Mounting framework;

[0021] Rotate the base to rotatably connect it to the mounting frame around the first axis;

[0022] The fixed end of the fourth driving member is located on the mounting frame, and the output end of the fourth driving member is connected to the rotating base to drive the rotating base to rotate; the fixed end of the first driving member is located on the rotating base.

[0023] In one embodiment, the hole wall grinding device includes a gear set, the gear set comprising:

[0024] The first gear is rotatably connected to the mounting frame, and the rotation axis of the first gear is parallel to the first axis; the output end of the fourth driving member is connected to the first gear to drive the first gear to rotate.

[0025] The second gear is connected to the rotating base, and the second gear meshes with the first gear for transmission.

[0026] In one embodiment, the hole wall polishing device includes a housing assembly, the housing assembly comprising:

[0027] A protective sleeve extending along the first axis;

[0028] A housing positioning platform is provided at one end of the protective sleeve along its own axial direction. The housing positioning platform is provided with a through hole extending along the first axis. The through hole communicates with the inner cavity of the protective sleeve. A positioning ring is provided around the outer periphery of the through hole. The positioning ring is used to cooperate with the hole to be polished.

[0029] The grinding head assembly is located in the inner cavity. When the second drive member moves along the first axis, the grinding head passes through the through hole under the drive of the second drive member.

[0030] In one embodiment, the hole wall polishing device includes an image acquisition device connected to the output end of the second drive unit. The image acquisition device is used to capture image information inside the hole to be polished in order to obtain the polishing state of the hole.

[0031] This application also proposes a hole wall grinding method, which is used in the hole wall grinding apparatus described in the foregoing embodiments, and the hole wall grinding method includes:

[0032] Control the first driving component to drive the second driving component to move along the first axis;

[0033] The second driving component is controlled to drive the grinding head to move along the first straight line.

[0034] The hole wall grinding device and method in this embodiment connects the fixed end of the second driving member to the output end of the first driving member, allowing the first driving member to drive the second driving member to move along a first axis. This enables the first driving member to automatically drive the second driving member to move towards the hole to be ground along the first axis. By placing the grinding head at the output end of the second driving member, the grinding head can move synchronously as the second driving member automatically moves towards the hole to be ground along the first axis. Thus, when the first axis is parallel to the axis of the hole to be ground, during the process of the second driving member driving the grinding head to move along the first axis, the grinding head will automatically extend into the annular gap between the valve shaft of the reheat steam inlet butterfly valve and the hole to be ground. By allowing the grinding head to automatically extend into the hole to be ground, the working efficiency of the hole wall grinding device can be improved, thereby saving time and material costs.

[0035] By configuring a second driving component to move the grinding head along a first straight line, the grinding head, after being inserted into the hole to be ground, can be driven to move along the first straight line within the hole. Thus, when the first straight line is parallel to any radial direction of the hole to be ground, as the second driving component moves the grinding head along the first straight line, the grinding head gradually approaches and contacts the hole wall, grinding the hole wall. By allowing the grinding head to automatically approach the hole wall, the grinding efficiency of the hole wall grinding device can be improved, thereby saving time and material costs. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of a hole wall grinding device in one embodiment of this application.

[0038] Figure 2 for Figure 1 Another schematic diagram of the hole wall grinding device shown.

[0039] Figure 3 for Figure 1 The diagram shows the structure of the hole wall grinding device after the outer casing positioning table has been removed.

[0040] Figure 4 for Figure 3The diagram shows a structural schematic of the hole wall grinding device after the protective sleeve has been removed.

[0041] Figure 5 for Figure 4 The diagram shows another structural design of the hole wall grinding device after the protective sleeve has been removed.

[0042] Figure 6 for Figure 4 The diagram shows another structural design of the hole wall grinding device after the protective sleeve has been removed.

[0043] Figure 7 for Figure 6 The diagram shown is a partial enlarged view of the structure at point A.

[0044] Figure 8 This is a flowchart of a hole wall grinding method according to an embodiment of this application.

[0045] Figure label:

[0046] Hole wall grinding device 10;

[0047] Drive component 100, first drive element 110, second drive element 120, fourth drive element 130;

[0048] Grinding head assembly 200, grinding head 210, grinding head mounting bracket 220, rotating platform 230, guide rail 231, rotating shaft 240, first shaft section 241, second shaft section 242, bevel gear set 250, first bevel gear 251, second bevel gear 252, third drive component 260;

[0049] Mounting frame 300;

[0050] Rotating base 400;

[0051] Gear set 500, first gear 510, second gear 520;

[0052] Housing assembly 600, protective sleeve 610, inner cavity 611, housing positioning platform 620, through hole 621, positioning ring 622, rotating ring 630, opening 631, lead screw 640;

[0053] Image acquisition device 700;

[0054] Transmission rod 800. Detailed Implementation

[0055] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific implementation methods of this application will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0056] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0057] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this application, unless otherwise expressly 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via 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. Similarly, "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.

[0060] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0061] Figure 1 This is a schematic diagram of a hole wall grinding device in one embodiment of this application. Figure 3 for Figure 1 The diagram shows the structure of the hole wall grinding device after the outer casing positioning table has been removed. Figure 4 for Figure 3 The diagram shows a structural schematic of the hole wall grinding device after the protective sleeve has been removed. Figure 5 for Figure 4 The diagram shows another structural design of the hole wall grinding device after the protective sleeve has been removed.

[0062] Please see Figure 1 , Figure 3 , Figure 4 as well as Figure 5 An embodiment of this application provides a hole wall grinding device 10, including a drive assembly 100. The drive assembly 100 includes a first drive member 110 and a second drive member 120. The fixed end of the second drive member 120 is connected to the output end of the first drive member 110. The first drive member 110 drives the second drive member 120 to move along a first axis V1. The first axis V1 is parallel to the axis of the hole to be ground (not shown). The first drive member 110 and the second drive member 120 can be selected from common rotary motors, pneumatic motors, hydraulic motors, or other devices that output rotary motion.

[0063] In one example, the hole wall grinding device 10 may include a grinding head assembly 200, which includes a grinding head 210. The grinding head 210 is connected to the output end of a second drive member 120, which drives the grinding head 210 to move along a first straight line V2, which intersects a first axis V1. The first straight line V2 is parallel to any radial direction of the hole to be ground.

[0064] In this embodiment, the hole wall grinding device 10 connects the fixed end of the second driving member 120 to the output end of the first driving member 110, allowing the first driving member 110 to drive the second driving member 120 to move along the first axis V1. This enables the first driving member 110 to drive the second driving member 120 to automatically move towards the hole to be ground (not shown) along the first axis V1. By placing the grinding head 210 at the output end of the second driving member 120, when the second driving member 120 automatically moves towards the hole to be ground along the first axis V1, it can drive the grinding head 210 to move synchronously. Thus, when the first axis V1 is parallel to the axis of the hole to be ground, during the process of the second driving member 120 driving the grinding head 210 to move along the first axis V1, the grinding head 210 will automatically extend into the annular gap between the valve shaft of the reheat steam inlet butterfly valve and the hole to be ground. By allowing the grinding head 210 to automatically extend into the hole to be ground, the working efficiency of the hole wall grinding device 10 can be improved, thereby saving time and material costs.

[0065] By configuring a second driving member 120 to drive the grinding head 210 to move along a first straight line V2, after the grinding head 210 extends into the hole to be ground, the second driving member 120 can drive the grinding head 210 to move along the first straight line V2 within the hole. Thus, when the first straight line V2 is parallel to any radial direction of the hole to be ground, as the second driving member 120 drives the grinding head 210 to move along the first straight line V2, the grinding head 210 will gradually approach the hole wall and then contact the hole wall to grind it. By allowing the grinding head 210 to automatically approach the hole wall, the grinding efficiency of the hole wall grinding device 10 can be improved, thereby saving time and material costs.

[0066] Please see Figure 4 and Figure 5 In some embodiments, the grinding head assembly 200 further includes a grinding head mounting bracket 220, which is made of high-strength steel. The grinding head mounting bracket 220 is connected to the output end of the second drive member 120, which drives the grinding head mounting bracket 220 to move along a first straight line V2.

[0067] In one example, the grinding head 210 is rotatably connected to the grinding head mounting bracket 220.

[0068] In this embodiment, the hole wall grinding device 10 connects the grinding head mounting bracket 220 to the output end of the second driving member 120, allowing the second driving member 120 to drive the grinding head mounting bracket 220 to move along the first straight line V2. By rotatably connecting the grinding head 210 to the grinding head mounting bracket 220, when the second driving member 120 drives the grinding head mounting bracket 220 to move, the grinding head mounting bracket 220 can synchronously move the grinding head 210 along the first straight line V2, thereby bringing the grinding head 210 close to the hole wall to be ground, contacting the hole wall, and grinding the hole wall.

[0069] Please see Figure 4 and Figure 5 In some embodiments, the grinding head 210 includes a plurality of grinding heads arranged along a first axis V1, and the rotation axis of the grinding head 210 is parallel to the first axis V1.

[0070] The hole wall grinding device 10 in this embodiment includes multiple grinding heads 210, allowing multiple grinding heads 210 to grind the hole wall to be ground simultaneously. This increases the grinding speed of the hole wall grinding device 10, completing the grinding of the hole wall in a shorter time. By arranging the multiple grinding heads 210 along the first axis V1, so that the first axis V1 is parallel to the axis of the hole to be ground, the multiple grinding heads 210 can grind the hole wall at different positions along the first axis V1. By setting the rotation axis of the grinding head 210 to be parallel to the first axis V1, so that the first axis V1 is parallel to the axis of the hole to be ground, the outer peripheral surface of the grinding head 210 is always in contact with the hole wall during the rotation of the grinding head 210, thereby making better use of the peripheral surface of the grinding head 210 to grind the hole wall.

[0071] Please see Figure 4 and Figure 5 In some embodiments, the grinding head assembly 200 further includes a rotary platform 230, which is made of aluminum alloy or polymer synthetic plastic. The rotary platform 230 is connected to the output end of the first drive member 110, which drives the rotary platform 230 to move along the first axis V1. The fixed end of the second drive member 120 is disposed on the rotary platform 230, and the grinding head mounting bracket 220 is slidably connected to the rotary platform 230 along the first straight line V2.

[0072] Optionally, the rotary platform 230 is provided with a guide rail 231, which extends along the first straight line V2, and the grinding head mounting bracket 220 is slidably connected to the guide rail 231 along the first straight line V2.

[0073] Optionally, the guide rail 231 includes multiple guide rails 231 arranged along the second straight line V3, the second straight line V3 intersects the first straight line V2, and the second straight line V3 intersects the first axis V1.

[0074] In this embodiment, the hole wall grinding device 10 connects the rotating platform 230 to the output end of the first driving member 110, allowing the first driving member 110 to drive the rotating platform 230 to move along the first axis V1. By fixing the end of the second driving member 120 to the rotating platform 230, the device can synchronously drive the rotating platform 230 to move along the first axis V1. Furthermore, by slidably connecting the grinding head mounting bracket 220 to the rotating platform 230 along the first straight line V2, the second driving member 120 can drive the grinding head mounting bracket 220 to slide relative to the rotating platform 230 along the first straight line V2.

[0075] Figure 6 for Figure 4 The diagram shows another structural design of the hole wall grinding device after the protective sleeve has been removed. Figure 7 for Figure 6 The diagram shown is a partial enlarged view of the structure at point A.

[0076] Please see Figure 6 and Figure 7 In some embodiments, the grinding head assembly 200 includes a rotating shaft 240 made of aluminum alloy or polymer synthetic plastic. The rotating shaft 240 extends along a first straight line V2 and is rotatably connected to the rotating platform 230 about its own central axis. The grinding head mounting bracket 220 is sleeved on the rotating shaft 240 and threadedly connected to the rotating shaft 240.

[0077] In one example, the output of the second drive unit 120 is connected to the rotating shaft 240, and the second drive unit 120 is used to drive the rotating shaft 240 to rotate.

[0078] In this embodiment, the hole wall grinding device 10 has a rotating shaft 240 extending along a first straight line V2. The rotating shaft 240 is rotatably connected to the rotating platform 230 around its central axis. The grinding head mounting bracket 220 is sleeved on the rotating shaft 240 and threadedly connected to it. This allows the grinding head mounting bracket 220 to move along the first straight line V2 during the rotation of the rotating shaft 240. By connecting the output end of the second driving member 120 to the rotating shaft 240, the second driving member 120 drives the rotating shaft 240 to rotate, thereby causing the grinding head mounting bracket 220 to move along the first straight line V2.

[0079] Please see Figure 6 and Figure 7 In some embodiments, the rotating shaft 240 includes a first shaft segment 241 and a second shaft segment 242 arranged along a first straight line V2; the first shaft segment 241 and the second shaft segment 242 are connected, and the grinding head mounting bracket 220 is sleeved on the first shaft segment 241 and threadedly connected to the first shaft segment 241.

[0080] In one example, the grinding head assembly 200 also includes a bevel gear set 250, which includes a first bevel gear 251 and a second bevel gear 252. The first bevel gear 251 is sleeved outside the second shaft segment 242, and the second bevel gear 252 meshes with the first bevel gear 251 for transmission.

[0081] In one example, the output of the second drive member 120 is connected to the second bevel gear 252 to drive the second bevel gear 252 to rotate about an axis parallel to the first axis V1. The output of the second drive member 120 rotates about an axis parallel to the first axis V1.

[0082] In this embodiment, the hole wall grinding device 10 includes a rotating shaft 240 comprising a first shaft segment 241 and a second shaft segment 242 arranged along a first straight line V2. A grinding head mounting bracket 220 is fitted over the first shaft segment 241 and threadedly connected to it. This allows the first shaft segment 241 to drive the grinding head mounting bracket 220 to move along the first straight line V2 during the rotation of the rotating shaft 240. A first bevel gear 251 is fitted over the second shaft segment 242, meshing with it. This allows the first bevel gear 251 to drive the second shaft segment 242 to rotate during the rotation of the first bevel gear 251, thus driving the first shaft segment 241 to rotate via the second shaft segment 242. Finally, the output end of the second driving member 120 is connected to the second bevel gear 252, enabling the second driving member 120 to drive the second bevel gear 252 to rotate around an axis parallel to the first axis V1.

[0083] Please see Figure 4 and Figure 5 In some embodiments, the grinding head assembly 200 further includes a third drive member 260. The fixed end of the third drive member 260 is disposed on the grinding head mounting bracket 220, and the output end of the third drive member 260 is connected to the grinding head 210. The third drive member 260 is used to drive the grinding head 210 to rotate about an axis parallel to the first axis V1. The grinding head 210 is sleeved on the output end of the third drive member 260, and grinding heads 210 of different precision can be replaced as needed to achieve grinding of different precisions of the hole wall to be ground. By replacing grinding heads 210 of different precisions, the grinding precision of the hole wall to be ground can be gradually improved, achieving grinding of the hole from coarse to fine.

[0084] Optionally, the third drive unit 260 can be a common device that outputs rotary motion, such as a rotary motor, pneumatic motor, or hydraulic motor. It should be noted that when the third drive unit 260 is a pneumatic motor, the flow rate of gas entering the pneumatic motor can be controlled by adjusting the valve opening on the air supply pipe connected to the pneumatic motor's air inlet. This changes the rotational speed at the output end of the pneumatic motor, allowing it to drive the grinding head 210 to rotate at different speeds. The valve on the aforementioned air supply pipe is a solenoid valve, electrically connected to the controller. When an abnormality occurs in the grinding of the grinding head 210, the operator can issue an emergency stop command to the controller via the display. Based on the emergency stop command, the controller closes the solenoid valve, cutting off the air supply pipe to prevent gas from the gas cylinder from entering the pneumatic motor through the air supply pipe, thus stopping the pneumatic motor from driving the grinding head 210 and causing the grinding head 210 to stop rotating.

[0085] In this embodiment, the hole wall grinding device 10, by fixing the fixed end of the third driving member 260 to the grinding head mounting bracket 220, allows the third driving member 260 to move synchronously when the grinding head mounting bracket 220 moves along the first straight line V2. By connecting the output end of the third driving member 260 to the grinding head 210, the third driving member 260 drives the grinding head 210 to rotate around an axis parallel to the first axis V1. This allows the third driving member 260 to automatically drive the grinding head 210 to rotate around an axis parallel to the first axis V1, thereby allowing the grinding head 210 to better grind the hole wall to be ground.

[0086] Figure 2 for Figure 1 Another schematic diagram of the hole wall grinding device shown.

[0087] Please see Figure 2 , Figure 4 and Figure 5 In some embodiments, the drive assembly 100 further includes a fourth drive member 130, the output end of which is connected to the fixed end of the first drive member 110. The fourth drive member 130 is used to drive the first drive member 110 to rotate around the first axis V1. The fourth drive member 130 can be selected from common devices that output rotary motion, such as rotary motors, pneumatic motors, and hydraulic motors.

[0088] In this embodiment, the hole wall grinding device 10 connects the output end of the fourth driving member 130 to the fixed end of the first driving member 110, allowing the fourth driving member 130 to drive the first driving member 110 to rotate around the first axis V1. This enables the fourth driving member 130 to drive the first driving member 110 to rotate or oscillate around the first axis V1. Thus, when the first axis V1 coincides with the axis of the hole to be ground, the first driving member 110 can automatically rotate or oscillate around the axis of the hole, and simultaneously drive the second driving member 120 to rotate or oscillate. It is important to emphasize that when the second driving member 120 rotates or oscillates around the axis of the hole to be ground, it will simultaneously drive the grinding head 210 to rotate or oscillate, allowing the grinding head 210 to grind the hole wall along the circumference of the hole.

[0089] Please see Figure 4 and Figure 5 In some embodiments, the hole wall grinding device 10 includes a mounting frame 300 and a rotating base 400. The mounting frame 300 and the rotating base 400 are made of aluminum alloy or high-molecular synthetic plastic. The rotating base 400 is rotatably connected to the mounting frame 300 about a first axis V1. The fixed end of the fourth driving member 130 is located on the mounting frame 300, and the output end of the fourth driving member 130 is connected to the rotating base 400 to drive the rotating base 400 to rotate; the fixed end of the first driving member 110 is located on the rotating base 400.

[0090] In this embodiment, the hole wall grinding device 10 rotatably connects the rotating base 400 to the mounting frame 300 around the first axis V1, and sets the fixed end of the first driving member 110 on the rotating base 400, so that the first driving member 110 can rotate around the first axis V1 during the rotation of the rotating base 400. By setting the fixed end of the fourth driving member 130 on the mounting frame 300 and connecting the output end of the fourth driving member 130 to the rotating base 400, the fourth driving member 130 can drive the rotating base 400 to rotate automatically around the first axis V1.

[0091] Please see Figure 4 and Figure 5 In some embodiments, the hole wall grinding device 10 includes a gear set 500, which includes a first gear 510 and a second gear 520. The first gear 510 is rotatably connected to the mounting frame 300, and the rotation axis of the first gear 510 is parallel to the first axis V1. The materials of the first gear 510 and the second gear 520 include aluminum alloy or polymer synthetic plastic.

[0092] In one example, the output of the fourth drive 130 is connected to the first gear 510 to drive the first gear 510 to rotate.

[0093] In one example, the second gear 520 is connected to the rotating base 400, and the second gear 520 meshes with the first gear 510 for transmission.

[0094] In this embodiment, the hole wall grinding device 10 rotatably connects the first gear 510 to the mounting frame 300, making the rotation axis of the first gear 510 parallel to the first axis V1, allowing the first gear 510 to rotate relative to the mounting frame 300 around an axis parallel to the first axis V1. By connecting the output end of the fourth driving member 130 to the first gear 510, the fourth driving member 130 drives the first gear 510 to rotate, enabling the first gear 510 to automatically rotate around an axis parallel to the first axis V1. By connecting the second gear 520 to the rotating base 400, and setting the second gear 520 to mesh with the first gear 510, during the process of the fourth driving member 130 driving the first gear 510 to rotate, the first gear 510 can drive the second gear 520 to rotate, thereby relying on the second gear 520 to drive the rotating base 400 to rotate relative to the mounting frame 300.

[0095] Please see Figure 1 and Figure 2 In some embodiments, the hole wall grinding device 10 includes a housing assembly 600, which includes a protective sleeve 610 and a housing positioning platform 620. The protective sleeve 610 extends along a first axis V1. The housing positioning platform 620 is located at one end of the protective sleeve 610 along its own axial direction, and the housing positioning platform 620 has a through hole 621 extending along the first axis V1, which communicates with the inner cavity 611 of the protective sleeve 610. A positioning ring 622 is provided around the outer periphery of the through hole 621, which is used to engage with the hole to be ground. The grinding head assembly 200 is located in the inner cavity 611. When the second driving member 120 moves along the first axis V1, the grinding head 210 passes through the through hole 621 under the drive of the second driving member 120.

[0096] Optionally, the outer wall of the protective sleeve 610 is provided with perforations to reduce the weight of the protective sleeve 610 and to facilitate the inflow of cool air from the outside into the inner cavity 611 of the protective sleeve 610 for cooling. The protective sleeve 610 and the outer shell positioning platform 620 are made of aluminum alloy or polymer synthetic plastic.

[0097] Optionally, the second drive element 120 is located in the inner cavity 611.

[0098] Optionally, the positioning ring 622 is located on the side of the housing positioning platform 620 away from the protective sleeve 610, and the outer diameter of the positioning ring 622 gradually decreases along the direction from the protective sleeve 610 to the housing positioning platform 620.

[0099] Optionally, the rotating platform 230 and the grinding head mounting bracket 220 are arranged in sequence along the direction from the protective sleeve 610 to the housing positioning table 620.

[0100] Optionally, the mounting frame 300 is located in the inner cavity 611, on the side of the grinding head assembly 200 away from the housing positioning stage 620, and the mounting frame 300 is connected to the protective sleeve 610.

[0101] Optionally, the mounting frame 300 is provided with a mounting hole (not shown), which passes through the mounting frame 300 along the axis of the protective sleeve 610. The rotating base 400 is located inside the mounting hole and is rotatably connected to the mounting frame 300 about the axis of the mounting hole.

[0102] Optionally, the second gear 520 is located at one end of the protective sleeve 610 away from the housing positioning platform 620.

[0103] Optionally, the first gear 510 is located outside the protective sleeve 610 and is rotatably connected to the protective sleeve 610, and the rotation axis of the first gear 510 is parallel to the first axis V1.

[0104] Optionally, the housing assembly 600 includes a rotating ring 630 located within a through hole 621. The rotating ring 630 is rotatably connected to the housing positioning stage 620 about the central axis of the through hole 621. The rotating ring 630 has multiple openings 631 arranged around its center, and each opening 631 passes through the rotating ring 630 along the axis of the through hole 621. When the second drive member 120 moves along the first axis V1, the grinding head 210 passes through any of the openings 631 under the drive of the second drive member 120. The rotating ring 630 is made of aluminum alloy or polymer synthetic plastic.

[0105] Optionally, the projection of the opening 631 along the central axis of the through hole 621 covers the projection of the grinding head mounting bracket 220 along the central axis of the through hole 621.

[0106] Optionally, the housing assembly 600 includes a lead screw 640 that passes through the rotating platform 230 along the axis of the through hole 621 and is threadedly connected to the rotating platform 230. One end of the lead screw 640 is connected to the rotating ring 630, and the other end is connected to the first drive member 110, which is located in the inner cavity 611 and is used to drive the lead screw 640 to rotate about its own central axis. The lead screw 640 may be made of aluminum alloy or polymer synthetic plastic.

[0107] Optionally, the hole wall grinding device 10 includes a transmission rod 800, which extends along the central axis of the protective sleeve 610 and passes through the rotating base 400, the rotating platform 230, and the rotating ring 630. The rotating base 400, the rotating platform 230, and the rotating ring 630 are respectively connected to the transmission rod 800. The transmission rod 800 is made of aluminum alloy or high-molecular synthetic plastic.

[0108] Optionally, the transmission rod 800 includes multiple transmission rods 800 arranged around the central axis of the protective sleeve 610.

[0109] In this embodiment, the hole wall grinding device 10 protects the grinding head assembly 200 by providing a protective sleeve 610 extending along the first axis V1. The protective sleeve 610 protects the grinding head assembly 200 within its inner cavity 611. A housing positioning platform 620 is positioned at one end of the protective sleeve 610 along its axial direction. A through hole 621 extending along the first axis V1 is provided on the housing positioning platform 620, communicating with the inner cavity 611 of the protective sleeve 610. This allows the grinding head 210 to pass through the through hole 621 and extend into the hole to be ground when the second driving member 120 moves along the first axis V1. By setting a positioning ring 622 around the outer periphery of the through hole 621, the positioning ring 622 is used to cooperate with the hole to be ground, so that the outer peripheral surface of the positioning ring 622 contacts the hole wall of the hole to be ground, so that the central axis of the through hole 621 is collinear with the central axis of the hole to be ground, simplifying the alignment difficulty between the through hole 621 and the hole to be ground.

[0110] Please see Figure 3 In some embodiments, the hole wall polishing device 10 includes an image acquisition device 700, which is connected to the output end of the second drive unit 120. The image acquisition device 700 is used to capture image information inside the hole to be polished in order to obtain the polishing status of the hole.

[0111] Optionally, the hole wall grinding device 10 includes a control cabinet (not shown), which houses a controller. The controller is a common PLC control module, which will not be described in detail here. The controller is electrically connected to the image acquisition unit 700 to acquire image information captured by the image acquisition unit 700. In this way, the image information captured by the image acquisition unit 700 can be transmitted to the controller for storage.

[0112] Optionally, the hole wall grinding device 10 includes a display (not shown), which is electrically connected to the controller to display image information acquired by the image acquisition unit 700. That is, after the image information captured by the image acquisition unit 700 is transmitted to the controller, the controller will transmit it to the display for display.

[0113] Optionally, the controller is electrically connected to the first drive unit 110 to start or stop the first drive unit 110. In this way, the controller can communicate with the first drive unit 110 and issue control commands to the control board of the first drive unit 110 (motor) to start or stop the first drive unit 110.

[0114] It should be further explained that operators can input commands regarding the first drive unit 110 on the display. After reading the commands, the controller will send them to the first drive unit 110 to start or stop it, thus achieving manual control of the first drive unit 110. This involves manually adjusting the movement of the grinding head 210 along the first axis V1, and manually adjusting the grinding head 210 along the first axis V1 towards the area to be ground within the hole to be ground. Alternatively, a program for controlling the first drive unit 110 can be pre-stored in the controller. After manual control of the first drive unit 110, the controller will read the program and start or stop the first drive unit 110 according to the program's instructions, thus achieving automatic control of the first drive unit 110.

[0115] Optionally, the controller is electrically connected to the second drive unit 120 to start or stop the second drive unit 120. In this way, the controller can communicate with the second drive unit 120 and issue control commands to the control board of the second drive unit 120 (motor) to start or stop the second drive unit 120.

[0116] It should be further explained that operators can input commands regarding the second drive unit 120 on the display. After reading the commands, the controller will send them to the second drive unit 120 to start or stop it, thus achieving manual control of the second drive unit 120. Manual control involves moving the grinding head 210 along the first straight line V2, and manually adjusting the grinding head 210 to approach the area to be ground within the hole along the first straight line V2. Alternatively, a program for controlling the second drive unit 120 can be pre-stored in the controller. After manual control of the second drive unit 120, the controller will read the program and start or stop the second drive unit 120 according to the program's instructions, thus achieving automatic control of the second drive unit 120.

[0117] Optionally, the controller is electrically connected to the third drive 260 to start or stop the third drive 260.

[0118] Optionally, the controller is electrically connected to the fourth drive unit 130 to start or stop the fourth drive unit 130. In this way, the controller can communicate with the fourth drive unit 130 and issue control commands to the control board of the fourth drive unit 130 (motor) to start or stop the fourth drive unit 130.

[0119] It should be further explained that operators can input commands regarding the fourth drive unit 130 on the display. After reading the commands, the controller will send them to the fourth drive unit 130 to start or stop it, thus achieving manual control of the fourth drive unit 130. Manual control allows the grinding head 210 to rotate around the first axis V1, and manual adjustment allows the grinding head 210 to rotate along the first axis V1 towards the area to be ground within the hole to be ground. Alternatively, a program for controlling the fourth drive unit 130 can be pre-stored in the controller. After manual control of the fourth drive unit 130, the controller will read the program and start or stop the fourth drive unit 130 according to the program's instructions, achieving automatic control of the fourth drive unit 130.

[0120] Optionally, the control cabinet is equipped with a power supply, which is electrically connected to the first drive unit 110, the second drive unit 120, the third drive unit 260 and the fourth drive unit 130 to supply power to the first drive unit 110, the second drive unit 120, the third drive unit 260 and the fourth drive unit 130.

[0121] In this embodiment, the hole wall grinding device 10 connects the image acquisition unit 700 to the output end of the second driving member 120, allowing the image acquisition unit 700 to move along the first axis V1 and along the first straight line V2 under the drive of the second driving member 120. By setting the image acquisition unit 700 to acquire image information inside the hole to be ground, the operator outside the hole can observe the situation inside the hole in real time, determine the degree of damage to the hole wall, and understand the grinding effect of the grinding head 210 on the hole wall.

[0122] Figure 8 A flowchart illustrating a hole wall grinding method according to an embodiment of this application is shown. Please refer to... Figure 8 An embodiment of this application provides a method for grinding the wall of a hole, comprising:

[0123] S100: Control the first driving element 110 to drive the second driving element 120 to move along the first axis V1.

[0124] S200: Control the second drive unit 120 to drive the grinding head 210 to move along the first straight line V2.

[0125] In this embodiment, the hole wall grinding method connects the fixed end of the second driving member 120 to the output end of the first driving member 110, allowing the first driving member 110 to drive the second driving member 120 to move along the first axis V1. This enables the first driving member 110 to drive the second driving member 120 to automatically move towards the hole to be ground along the first axis V1. By placing the grinding head 210 at the output end of the second driving member 120, when the second driving member 120 automatically moves towards the hole to be ground along the first axis V1, it can drive the grinding head 210 to move synchronously. Thus, when the first axis V1 is parallel to the axis of the hole to be ground, during the process of the second driving member 120 driving the grinding head 210 to move along the first axis V1, the grinding head 210 will automatically extend into the annular gap between the valve shaft of the reheat steam inlet butterfly valve and the hole to be ground. By allowing the grinding head 210 to automatically extend into the hole to be ground, the working efficiency of the hole wall grinding device 10 can be improved, thereby saving time and material costs.

[0126] By configuring a second driving member 120 to drive the grinding head 210 to move along a first straight line V2, after the grinding head 210 extends into the hole to be ground, the second driving member 120 can drive the grinding head 210 to move along the first straight line V2 within the hole. Thus, when the first straight line V2 is parallel to any radial direction of the hole to be ground, as the second driving member 120 drives the grinding head 210 to move along the first straight line V2, the grinding head 210 will gradually approach the hole wall and then contact the hole wall to grind it. By allowing the grinding head 210 to automatically approach the hole wall, the grinding efficiency of the hole wall grinding device 10 can be improved, thereby saving time and material costs.

[0127] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0128] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A hole wall grinding device, characterized in that, The hole wall polishing device includes: A drive assembly includes a first drive member and a second drive member, wherein the fixed end of the second drive member is connected to the output end of the first drive member, and the first drive member is used to drive the second drive member to move along a first axis. A grinding head assembly includes a grinding head connected to the output end of a second driving member, the second driving member being used to drive the grinding head to move along a first straight line, the first straight line intersecting the first axis.

2. The hole wall grinding device according to claim 1, characterized in that, The grinding head assembly further includes a grinding head mounting bracket, which is connected to the output end of the second drive member. The second drive member is used to drive the grinding head mounting bracket to move along the first straight line. The grinding head is rotatably connected to the grinding head mounting bracket.

3. The hole wall grinding device according to claim 2, characterized in that, The grinding head includes multiple grinding heads, which are arranged along the first axis, and the rotation axis of the grinding head is parallel to the first axis.

4. The hole wall grinding device according to claim 2 or 3, characterized in that, The grinding head assembly further includes a rotary platform, which is connected to the output end of the first driving member. The first driving member is used to drive the rotary platform to move along the first axis. The fixed end of the second driving component is located on the rotating platform, and the grinding head mounting bracket is slidably connected to the rotating platform along the first straight line.

5. The hole wall grinding device according to claim 4, characterized in that, The grinding head assembly includes a rotating shaft that extends along the first straight line and is rotatably connected to the rotating platform about its own central axis; The grinding head mounting bracket is sleeved on the outside of the rotating shaft and threadedly connected to the rotating shaft. The output end of the second driving member is connected to the rotating shaft, and the second driving member is used to drive the rotating shaft to rotate.

6. The hole wall grinding device according to claim 5, characterized in that, The rotating shaft includes a first shaft segment and a second shaft segment arranged along the first straight line; the grinding head mounting bracket is sleeved on the first shaft segment and threadedly connected to the first shaft segment. The grinding head assembly also includes a bevel gear set, which includes a first bevel gear and a second bevel gear. The first bevel gear is sleeved outside the second shaft segment, and the second bevel gear meshes with the first bevel gear for transmission. The output end of the second drive member is connected to the second bevel gear to drive the second bevel gear to rotate around an axis parallel to the first axis.

7. The hole wall grinding device according to claim 2, characterized in that, The grinding head assembly further includes a third driving member, the fixed end of which is disposed on the grinding head mounting bracket, and the output end of which is connected to the grinding head. The third driving member is used to drive the grinding head to rotate about an axis parallel to the first axis.

8. The hole wall grinding device according to claim 1, characterized in that, The driving assembly further includes a fourth driving member, the output end of which is connected to the fixed end of the first driving member, and the fourth driving member is used to drive the first driving member to rotate around the first axis.

9. The hole wall grinding device according to claim 8, characterized in that, The hole wall polishing device includes: Mounting framework; Rotate the base to rotatably connect it to the mounting frame around the first axis; The fixed end of the fourth driving member is located on the mounting frame, and the output end of the fourth driving member is connected to the rotating base to drive the rotating base to rotate; the fixed end of the first driving member is located on the rotating base.

10. The hole wall grinding device according to claim 9, characterized in that, The hole wall grinding device includes a gear set, the gear set comprising: The first gear is rotatably connected to the mounting frame, and the rotation axis of the first gear is parallel to the first axis; the output end of the fourth driving member is connected to the first gear to drive the first gear to rotate. The second gear is connected to the rotating base, and the second gear meshes with the first gear for transmission.

11. The hole wall grinding device according to claim 1, characterized in that, The hole wall polishing device includes a housing assembly, which comprises: A protective sleeve extending along the first axis; A housing positioning platform is provided at one end of the protective sleeve along its own axial direction. The housing positioning platform is provided with a through hole extending along the first axis. The through hole communicates with the inner cavity of the protective sleeve. A positioning ring is provided around the outer periphery of the through hole. The positioning ring is used to cooperate with the hole to be polished. The grinding head assembly is located in the inner cavity. When the second drive member moves along the first axis, the grinding head passes through the through hole under the drive of the second drive member.

12. The hole wall grinding device according to claim 1, characterized in that, The hole wall grinding device includes an image acquisition device, which is connected to the output end of the second driving component. The image acquisition device is used to capture image information inside the hole to be ground in order to obtain the grinding status of the hole.

13. A method for grinding the wall of a hole, characterized in that, The hole wall grinding method is used in the hole wall grinding apparatus according to any one of claims 1 to 12, and the hole wall grinding method includes: Control the first driving component to drive the second driving component to move along the first axis; The second driving component is controlled to drive the grinding head to move along the first straight line.

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