Disassembling tool and method for deep shaft sleeve locking screw

Abstract

The application relates to a dismounting tool for a deep type shaft sleeve locking screw and a dismounting method thereof. The dismounting tool comprises a power mechanism, a transmission mechanism and a driving mechanism arranged along the axial direction of a pump shaft in sequence, the power mechanism is arranged on the pump shaft, the power mechanism is in transmission connection with the driving mechanism through the transmission mechanism, and the driving mechanism is driven to rotate through the transmission mechanism; the driving mechanism comprises a camera assembly, a driving head and a pushing assembly. The camera assembly is used for acquiring the position of the locking screw; the driving head is coaxially arranged with the camera assembly along the radial direction of the pump shaft; the pushing assembly is arranged at the end of the driving head away from the shaft sleeve, and the pushing assembly is used for pushing the driving head to be inserted into a countersunk groove of the locking screw along the radial direction of the pump shaft. The dismounting tool for the deep type shaft sleeve locking screw can be inserted into a sealed envelope to dismount the locking screw, the hydrophobic pump does not need to be completely disassembled for maintenance, the maintenance period is shortened, the maintenance cost is reduced, and the power generation loss is reduced.

Description

Technical Field

[0001] This application relates to the field of drainage pump maintenance technology, and in particular to the disassembly and assembly tooling and method of the deep-insertion bushing locking screw. Background Technology

[0002] According to the nuclear power plant maintenance program, the highest level of maintenance for condensate pumps is a full inspection, which involves completely disassembling the condensate pump and hoisting it to the maintenance workshop for thorough disassembly and overhaul. Due to the large workload and high difficulty of a full inspection, the maintenance cost is very high.

[0003] In nuclear power plants, when the rubber seal (O-ring) at the bottom of the pump body leaks, it needs to be replaced. However, before replacing the rubber seal, the locking screw on the outer circumference of the shaft sleeve needs to be removed first. The locking screw is tightened on the shaft sleeve radially, and a sealing box is set on the outer circumference of the shaft sleeve. The locking screw is located between the shaft sleeve and the sealing box. During disassembly, because the workers cannot insert the screwdriver between the shaft sleeve and the sealing box and align it with the countersunk groove on the screw for disassembly, the entire condensate pump has to be completely disassembled for maintenance, directly delaying the maintenance period by 6 days and causing significant maintenance costs and power generation losses. Summary of the Invention

[0004] Therefore, it is necessary to provide a tooling and method for disassembling and assembling a deep-mounted bushing locking screw to address the issues of maintenance costs and power generation losses caused by the need to completely disassemble the condensate pump when replacing the rubber seal.

[0005] A fixture for disassembling and assembling a deep-insertion bushing locking screw, wherein the bushing is fitted onto a portion of a pump shaft, and the locking screw passes radially through the bushing along the pump shaft. The fixture includes a power mechanism, a transmission mechanism, and a drive mechanism arranged sequentially along the axial direction of the pump shaft. The power mechanism is mounted on the pump shaft and is connected to the drive mechanism via the transmission mechanism to drive the drive mechanism to rotate around its own axis. The drive mechanism includes:

[0006] A camera assembly is used to capture the position of the locking screw;

[0007] A drive head is coaxially arranged with the camera assembly, and the axial direction of the drive head is radially along the pump shaft, which is the same as the axial direction of the camera assembly.

[0008] A pushing assembly is disposed at the end of the drive head away from the bushing, the pushing assembly being used to push the drive head radially into the countersunk groove of the locking screw.

[0009] In one embodiment, the drive mechanism includes a first housing that is pulsatorically connected to the transmission mechanism, a drive head is mounted at one end of the first housing, a camera assembly is mounted inside the first housing, and a light-transmitting hole is provided on the drive head. The camera assembly is used to obtain the position of the locking screw through the light-transmitting hole.

[0010] In one embodiment, the drive mechanism includes a first level disposed in the first housing and near one end of the drive head, the first level being used to emit cross rays radially along the pump shaft for positioning the locking screw.

[0011] In one embodiment, the pushing component includes:

[0012] The second housing is connected to the end of the first housing that is furthest from the drive head;

[0013] An electromagnetic coil is disposed inside the second housing;

[0014] A push rod, which is a magnet, has one end inserted into the electromagnetic coil and the other end extended out of the second housing. A stop structure is provided between the two ends of the push rod.

[0015] An elastic element is sleeved outside the push rod, with one end of the elastic element abutting against the inner wall of the second housing and the other end abutting against the stop structure.

[0016] In one embodiment, the disassembly and assembly fixture includes an auxiliary bushing, which is sleeved on the outside of the pump shaft. One end of the auxiliary bushing is used to abut against the bushing, and the power mechanism is located at the other end of the auxiliary bushing.

[0017] In one embodiment, the auxiliary bushing includes at least two arc bushings that form a ring structure. The disassembly and assembly fixture includes a connecting plate assembly, which is fixed to the end of the auxiliary bushing away from the bushing. The connecting plate assembly includes at least two arc connecting plates that can form a ring structure, and the arc connecting plates are offset from the arc bushings along the circumference of the auxiliary bushing.

[0018] In one embodiment, the disassembly and assembly fixture includes at least one clamping plate assembly sleeved outside the auxiliary bushing. The clamping plate assembly includes at least two arc-shaped clamping plates, each of which has ears at both ends. Adjacent arc-shaped clamping plates are connected to each other through the ears. The power mechanism is disposed on the clamping plate assembly.

[0019] In one embodiment, at least one clamping plate assembly includes a first clamping plate assembly for setting the power mechanism;

[0020] At least one clamping plate assembly includes a first clamping plate assembly for setting a power mechanism; the first clamping plate assembly is connected to a connecting plate assembly by a first bolt and a second bolt, the first bolt is threaded to the connecting plate assembly and one end abuts against the first clamping plate assembly, and the second bolt passes through the connecting plate assembly and the first clamping plate assembly in sequence to be locked with a lock nut.

[0021] In one embodiment, the transmission mechanism includes:

[0022] A transmission chain, one end of which is connected to the power mechanism and the other end of which is connected to the drive mechanism;

[0023] A connecting rod assembly is arranged parallel to the transmission chain. One end of the connecting rod assembly is rotatably connected to the power mechanism, and the other end of the connecting rod assembly is rotatably connected to the drive mechanism.

[0024] In one embodiment, the linkage assembly includes a first linkage, a second linkage, and a third linkage arranged sequentially along the axial direction of the pump shaft. One end of the second linkage is connected to the first linkage via a first thread, and the other end of the second linkage is connected to the third linkage via a second thread. The first thread and the second thread have opposite helical directions.

[0025] A method for installing a fixture for disassembling and assembling a deep-insertion bushing locking screw, wherein the power mechanism is connected to the drive mechanism via the transmission mechanism, and the installation method includes the following steps:

[0026] The drive mechanism extends between the bushing and the sealing box;

[0027] The power mechanism is moved so that it drives the drive mechanism to move through the transmission mechanism, and the camera component in the drive mechanism moves to obtain the position of the locking screw.

[0028] Once the camera assembly has located the screw, keep the drive mechanism stationary and fix the power mechanism on the pump shaft.

[0029] The push assembly extends so that the end of the push assembly away from the drive head abuts against the sealing body, while the drive head is inserted into the threaded groove of the locking screw.

[0030] The aforementioned fixture and method for disassembling and assembling the deep-insertion bushing locking screw involves the following steps: First, the drive mechanism and power mechanism are connected via a transmission mechanism. Then, the drive mechanism extends between the bushing and the sealing chamber, and the position of the locking screw is captured by a camera component. Next, the power mechanism is fixed to the pump shaft. Then, a pushing component pushes the drive head so that it is inserted radially into the countersunk groove of the locking screw. Finally, the power mechanism is controlled to rotate, and the drive head rotates via the transmission mechanism. This rotation of the drive head causes the locking screw to rotate, thus disassembling it. During installation, the power mechanism is rotated in the opposite direction to install the locking screw. In other words, the fixture for disassembling and assembling the deep-insertion bushing locking screw of this application can extend into the sealing chamber to disassemble the locking screw without requiring complete disassembly and overhaul of the condensate pump, thus shortening the maintenance period, reducing maintenance costs, and minimizing power generation losses. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a tooling for disassembling and assembling a deep-penetrating bushing locking screw, which is fixed on a condensate pump in one embodiment.

[0032] Figure 2 This is a schematic diagram of the disassembly and assembly fixture for a deep-insertion bushing locking screw in one embodiment.

[0033] Figure 3 This is a schematic diagram of the drive mechanism in one embodiment.

[0034] Figure 4 This is a schematic diagram of the linkage assembly in one embodiment.

[0035] Figure 5 This is a schematic diagram of the spline shaft sprocket in one embodiment.

[0036] Figure 6 This is a schematic diagram of the auxiliary bushing in one embodiment.

[0037] Figure 7 This is a schematic diagram of the connecting plate assembly in one embodiment.

[0038] Figure 8 This is a schematic diagram of the structure of the first clamping plate assembly in one embodiment.

[0039] Reference numerals: 10, pump shaft; 20, shaft sleeve; 30, sealing box; 31, locking screw;

[0040] 100. Power mechanism; 110. First bearing; 120. Splined shaft sprocket; 121. First sprocket; 122. Spline; 130. Handwheel;

[0041] 200. Transmission mechanism; 210. Transmission chain; 220. Linkage assembly; 221. First link; 2211. First lock nut; 2212. First bearing ring; 222. Second link; 223. Third link; 2231. Second lock nut; 2232. Second bearing ring;

[0042] 300. Drive mechanism; 310. Camera assembly; 311. Light-emitting diode (LED); 313. Camera; 320. Drive head; 321. Drive section; 322. Connecting section; 323. Light-transmitting hole; 330. Push assembly; 331. Electromagnetic coil; 332. Push rod; 333. Elastic element; 340. First housing; 341. First level; 342. Second sprocket; 343. Second bearing; 344. Pressure equalizing pad; 345. Spring; 346. Gasket; 347. Porous pad; 350. Second housing; 360. First end cap;

[0043] 410. Auxiliary bushing; 411. Arc bushing; 420. Connecting plate assembly; 421. Arc connecting plate; 430. First clamping plate assembly; 431. Arc clamping plate; 432. Ear; 433. Second level; 440. Second clamping plate assembly. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] See Figure 1 and Figure 3An embodiment of this application provides a disassembly and assembly fixture for a deep-penetrating bushing locking screw. The bushing 20 is sleeved on part of the pump shaft 10, and the locking screw 31 passes through the bushing 20 radially along the pump shaft 10. The disassembly and assembly fixture includes a power mechanism 100, a transmission mechanism 200, and a drive mechanism 300 arranged sequentially along the axial direction of the pump shaft 10. The power mechanism 100 is used to be installed on the pump shaft 10. The power mechanism 100 is connected to the drive mechanism 300 through the transmission mechanism 200 so as to drive the drive mechanism 300 to rotate around its own axis through the transmission mechanism 200. The drive mechanism 300 includes a camera assembly 310, a drive head 320, and a push assembly 330. The camera assembly 310 is used to obtain the position of the locking screw 31; the drive head 320 is coaxially arranged with the camera assembly 310, and the axial direction of the drive head 320 is radially along the pump shaft 10, which is the same as the axial direction of the camera assembly 310; the push assembly 330 is arranged at the end of the drive head 320 away from the bushing 20, and the push assembly 330 is used to push the drive head 320 radially along the pump shaft 10 into the countersunk groove of the locking screw 31.

[0051] In this embodiment, when disassembling the locking screw 31, the drive mechanism 300 and the power mechanism 100 are first connected via the transmission mechanism 200; then, the drive mechanism 300 is inserted between the bushing 20 and the sealing box 30, and the position of the locking screw 31 is obtained via the camera component 310; next, the power mechanism 100 is fixed to the pump shaft 10; then, the drive head 320 is pushed by the push component 330 so that the drive head 320 is inserted radially into the countersunk groove of the locking screw 31 along the pump shaft 10; then, the power mechanism 100 is controlled to rotate, and the power mechanism 100 drives the drive head 320 to rotate via the transmission mechanism 200. When the drive head 320 rotates, it can drive the locking screw 31 to rotate, thereby realizing the disassembly of the locking screw 31. During installation, the locking screw is installed by rotating the power mechanism 100 in the opposite direction. The tooling for disassembling and assembling the deep-penetrating bushing locking screw of this application can be inserted into the sealing chamber to disassemble the locking screw without having to completely disassemble and repair the condensate pump, thus shortening the maintenance period, reducing maintenance costs, and minimizing power generation losses.

[0052] Combination Figure 2 and Figure 3 In some embodiments, the drive mechanism 300 includes a first housing 340, which is connected to the transmission mechanism 200. A drive head 320 is installed at one end of the first housing 340, and a camera assembly 310 is installed inside the first housing 340. A light-transmitting hole 323 is provided on the drive head 320, and the camera assembly 310 is used to obtain the position of the locking screw 31 through the light-transmitting hole 323.

[0053] In this embodiment, the drive head 320 is disposed at one end of the first housing 340 and is used to insert into the countersunk groove of the locking screw 31. The camera assembly 310 is disposed inside the first housing 340 and is used to photograph the locking screw 31 through the light-transmitting hole 323. When the camera assembly 310 photographs the locking screw 31, since the camera assembly 310 and the drive head 320 are coaxially arranged, it indicates that the drive head 320 is aligned with the locking screw 31. At this time, the pushing assembly 330 is activated so that the pushing assembly 330 pushes the drive head 320 into the countersunk groove. There are multiple light-transmitting holes 323, which are arranged sequentially around the axial direction of the drive head 320.

[0054] Specifically, the drive head 320 includes a connecting section 322 and a drive section 321 arranged radially along the pump shaft 10. The axial dimension of the connecting section 322 along the pump shaft 10 is larger than that of the drive section 321 along the pump shaft 10. The connecting section 322 is connected to the first housing 340 by screws. A light-transmitting hole 323 is formed on the portion of the connecting section 322 where the axial dimension of the pump shaft 10 is larger than that of the drive section 321, so that the camera assembly 310 can directly capture a portion of the countersunk groove through the light-transmitting hole 323. Specifically, to facilitate the insertion of the drive head 320 into the countersunk groove, the end of the drive section 321 away from the connecting section 322 is chamfered. For example, both the connecting section 322 and the drive section 321 are cylindrical structures, and the diameter of the connecting section 322 is larger than the diameter of the drive section 321.

[0055] Specifically, the camera assembly 310 includes a light-emitting diode (LED) group 311, an LED 312, and a camera 313 arranged sequentially along the axial direction of the pump shaft 10. The light-emitting diode 312 is located on the side of the LED 312 near the drive head 320. The LED 312 emits light, and the light-emitting diode group 311 adjusts the light so that it can pass through the light-transmitting hole 323 to provide sufficient light for the camera 313 to capture images. A gasket 346 is provided between one radial end of the camera assembly 310 and the inner wall of the first housing 340, and the other radial end of the camera assembly 310 is connected to the first end cap 360 via a porous gasket 347. Two gaskets 346 are used, each with a thickness of 0.08mm-0.15mm, to provide preload and reduce vibration of the camera assembly 310. A pressure equalizing pad 344 and a spring 345 are provided between the drive head 320 and the first housing 340 to buffer the clamping force of the drive head 320 on the first housing 340.

[0056] The drive head 320 is detachably connected to the first housing 340, such as by screw connection or snap-fit ​​connection, which facilitates the replacement of different types of drive heads 320, such as cross drive heads and Torx drive heads, so as to achieve the disassembly of different screws.

[0057] Furthermore, the drive mechanism 300 includes a first level 341 disposed in the first housing 340 and near the end of the drive head 320. The first level 341 is used to emit cross rays along the radial direction of the pump shaft 10 for positioning the locking screw 31.

[0058] In this embodiment, the first level 341 emits a crosshair. When the camera 313 captures the intersection of the crosshairs within the countersunk groove of the locking screw 31, it indicates that the drive head 320 is aligned with the countersunk groove. The camera assembly 310 is connected to the interactive terminal to transmit signals. The operator can determine whether the drive head 320 is aligned with the countersunk groove based on the image displayed on the interactive terminal. The first level 341 can be an infrared level or a laser level.

[0059] Furthermore, the pushing component 330 is located at the end of the first housing 340 away from the driving head 320. The pushing component 330 includes a second housing 350, an electromagnetic coil 331, a push rod 332, and an elastic element 333. The electromagnetic coil 331 is located inside the second housing 350; the push rod 332 is a magnet, with one end extending into the electromagnetic coil 331 and the other end extending outside the second housing 350. A stop structure 337 is provided between the two ends of the push rod 332; the elastic element 333 is sleeved on the outside of the push rod 332, with one end abutting against the inner wall of the second housing 350 and the other end abutting against the stop structure 337. The stop structure 337 may be a protrusion provided on the outside of the push rod 332.

[0060] In this embodiment, the first housing 340 and the second housing 350 are threadedly connected. When the electromagnetic coil 331 is energized, it generates a magnetic field, pushing the push rod 332 to move away from the drive head 320. This causes the push rod 332 to compress the elastic element 333 and extend out of the second housing 350 until it abuts against the sealing box 30. Simultaneously, it pushes the drive head 320 to insert into the countersunk groove along the radial direction of the pump shaft 10. At this time, when the first housing 340 of the drive mechanism 300 is rotated by the power mechanism 100, the drive head 320 is rotated, which in turn drives the locking screw 31 to rotate, thereby enabling the installation or removal of the locking screw 31. When the locking screw 31 is removed, it is gradually pushed out of the bushing 20. At the same time, because the locking force of the locking screw 31 along the radial direction of the pump shaft 10 is greater than the electromagnetic force on the push rod 332, part of the push rod 332 can retract into the second housing 350.

[0061] Combination Figure 1 and Figure 6In some embodiments, the disassembly and assembly tooling includes an auxiliary bushing 410, which is sleeved on the outside of the pump shaft 10. One end of the auxiliary bushing 410 is used to abut against the bushing 20, and the power mechanism 100 is disposed at the other end of the auxiliary bushing 410.

[0062] The auxiliary bushing 410 is used to provide an installation position for the power mechanism 100. One end of the auxiliary bushing 410 abuts against the original bushing 20 on the pump shaft 10, which can prevent the auxiliary bushing 410 from sliding along the axial direction. At the same time, it is also helpful to ensure the installation level of the power mechanism 100, effectively reducing the risk of the power mechanism 100 tilting, that is, further effectively reducing the risk of the drive head 320 tilting.

[0063] It should be noted that when the auxiliary bushing 410 is fitted on the pump shaft 10, one end of the auxiliary bushing 410 abuts against the bushing 20 of the pump body, and the other end extends out of the sealing box 30. The power mechanism 100 is fixed on the end of the auxiliary bushing 410 that extends out of the sealing box 30, so that the operator can manually operate the power mechanism 100 so that the power mechanism 100 drives the drive mechanism 300 to rotate through the transmission mechanism 200.

[0064] Combination Figure 1 and Figure 7 Furthermore, the auxiliary bushing 410 includes at least two arc bushings 411 that enclose a ring structure. The disassembly and assembly tooling includes a connecting plate assembly 420, which is fixed to the end of the auxiliary bushing 410 away from the bushing 20. The connecting plate assembly 420 includes at least two arc connecting plates 421 that can enclose a ring structure, and the arc connecting plates 421 and the arc bushings 411 are misaligned along the circumference of the auxiliary bushing 410.

[0065] In this embodiment, the auxiliary bushing 410 includes two semi-circular bushings that form an annular structure, and the connecting plate assembly 420 includes two semi-circular connecting plates that can form an annular structure. During installation, the two semi-circular bushings are first placed around the pump shaft 10, and then the semi-circular connecting plates are placed around the end of the auxiliary bushing 410 away from the original bushing 20, with the semi-circular connecting plates and the semi-circular bushings offset. The semi-circular connecting plates are then fixed to the semi-circular bushings with screws, thus fixing the auxiliary bushing 410. The auxiliary bushing 410 is divided into two halves for easy installation. The auxiliary bushing 410 has threaded holes through which screws are inserted. On one hand, the screws act as handles for the auxiliary bushing 410, facilitating its handling; on the other hand, when disassembling the auxiliary bushing 410, the screws act as set screws. Tightening the screws pushes against the pump shaft 10, causing the auxiliary bushing 410 to detach from the pump shaft 10.

[0066] Combination Figure 1 and Figure 8Furthermore, the disassembly and assembly fixture includes at least one clamping plate assembly fitted outside the auxiliary bushing 410. The clamping plate assembly includes at least two arc-shaped clamping plates 431. Each arc-shaped clamping plate 431 has ears 432 at both ends. Adjacent arc-shaped clamping plates 431 are connected to each other through the ears 432. The power mechanism 100 is mounted on the clamping plate assembly.

[0067] In this embodiment, the clamping plate assembly is sleeved over the auxiliary bushing 410 for further fixing the auxiliary bushing 410. Each clamping plate assembly includes two semi-circular clamping plates, and the ears 432 of the two semi-circular clamping plates are fixed by screws to form a ring structure.

[0068] Specifically, at least one clamping plate assembly includes a first clamping plate assembly 430 for setting the power mechanism 100; the first clamping plate assembly 430 is connected to the connecting plate assembly 420 by a first bolt and a second bolt, the first bolt is threaded to the connecting plate assembly 420 and one end abuts against the first clamping plate assembly 430, and the second bolt passes through the connecting plate assembly 420 and the first clamping plate assembly 430 in sequence to lock with the locking nut.

[0069] In this embodiment, the first bolt is threadedly connected to the connecting plate assembly 420, and one end abuts against the first clamping plate assembly 430, meaning the first bolt is used to keep the first clamping plate assembly 430 and the connecting plate assembly 420 away from each other. The second bolt passes sequentially through the connecting plate assembly 420 and the first clamping plate assembly 430 to be locked with the locking nut, meaning the second bolt is used to bring the first clamping plate assembly 430 and the connecting plate assembly 420 closer together. Adjusting the first and second bolts allows for adjustment of the axial and horizontal perpendicularity of the first clamping plate assembly 430.

[0070] The inner diameter of the first clamping plate group 430 is 1mm-3mm smaller than the outer diameter of the auxiliary bushing 410, that is, the first clamping plate group 430 and the auxiliary bushing 410 are tightly fitted together, which increases the limiting effect on the auxiliary bushing 410.

[0071] A second level 433 can be installed on the first clamping plate assembly 430. For example, one second level 433 can be installed at the zero o'clock position and another at the nine o'clock position of the clamping plate assembly. When the second level 433 indicates that a certain position of the clamping plate is not horizontal, the clamping plate assembly can be kept horizontal by adjusting the first bolt and the second bolt, thereby making the power mechanism 100 and the drive mechanism 300 horizontal, ensuring that the drive head 320 is horizontally inserted into the countersunk groove. The second level 433 can be a bubble level.

[0072] Furthermore, at least one clamping plate assembly includes a second clamping plate assembly 440 sleeved around the outer periphery of the auxiliary bushing 410. The second clamping plate assembly 440 is located at the middle of the auxiliary bushing 410 or at an end away from the first clamping plate assembly 430, to further enhance the clamping effect on the auxiliary bushing 410 and improve the installation accuracy of the auxiliary bushing 410. The inner diameter of the second clamping plate assembly 440 is 1mm-3mm smaller than the outer diameter of the auxiliary bushing 410, meaning the second clamping plate assembly 440 fits tightly with the auxiliary bushing 410, increasing the limiting effect on the auxiliary bushing 410.

[0073] Combination Figure 1 and Figure 2 In some embodiments, the transmission mechanism 200 includes a transmission chain 210 and a connecting rod assembly 220 that are parallel to each other. One end of the transmission chain 210 is connected to the power mechanism 100, and the other end of the transmission chain 210 is connected to the drive mechanism 300. One end of the connecting rod assembly 220 is rotatably connected to the power mechanism 100, and the other end of the connecting rod assembly 220 is rotatably connected to the drive mechanism 300.

[0074] Combination Figure 1 , Figure 2 as well as Figure 5 The power mechanism 100 includes a first bearing 110, a splined shaft sprocket 120, and a handwheel 130. The splined shaft sprocket 120 includes a spline 122 and a first sprocket 121 arranged coaxially. The handwheel 130 is fitted onto the spline 122. A second sprocket 342 is disposed outside the first housing 340. The first sprocket 121 and the second sprocket 342 are connected by a chain. One end of the first bearing 110 is embedded in the first sprocket 121.

[0075] In other embodiments, the spline shaft sprocket 120 may also be matched with an electric wrench adapter so that the spline shaft sprocket 120 can be driven to rotate by an electric wrench.

[0076] In this embodiment, one end of the transmission chain 210 is connected to the first sprocket 121, and the other end is connected to the second sprocket 342. Therefore, when the handwheel 130 is rotated, the first sprocket 121 can drive the second sprocket 342 to rotate, which in turn drives the drive head 320 to rotate through the first housing 340. One end of the connecting rod assembly 220 is rotatably connected to the first bearing 110 on the first sprocket 121, and the other end is rotatably connected to the second bearing 343 on the first housing 340. That is, the connecting rod assembly 220 is used to support the transmission chain 210, but not for transmission.

[0077] Combination Figure 4Furthermore, the connecting rod assembly 220 includes a first connecting rod 221, a second connecting rod 222, and a third connecting rod 223 arranged sequentially along the axial direction of the pump shaft 10. One end of the second connecting rod 222 is connected to the first connecting rod 221 via a first thread, and the other end of the second connecting rod 222 is connected to the third connecting rod 223 via a second thread. The helical directions of the first thread and the second thread are opposite.

[0078] In this embodiment, one end of the first connecting rod 221 is connected to a first bearing ring 2212, and the other end is provided with an internal thread. One end of the second connecting rod 222 is connected to the internal thread on the first connecting rod 221 via a first thread. One end of the third connecting rod 223 is connected to a second bearing ring 2232, and the other end is provided with an internal thread. The other end of the second connecting rod 222 is connected to the internal thread on the third connecting rod 223 via a second thread. Since the helical directions of the first thread and the second thread are opposite, when the second connecting rod 222 is rotated, both ends of the second connecting rod 222 rotate simultaneously relative to the third connecting rod 223 of the first connecting rod 221, so that both ends of the second connecting rod 222 gradually extend out of the first connecting rod 221 and the third connecting rod 223, or gradually retract into the first connecting rod 221 and the third connecting rod 223, thereby allowing the length of the transmission rod assembly to be adjusted. Specifically, a first locking nut 2211 is provided on the end of the second connecting rod 222 that connects to the first connecting rod 221, and a second locking nut 2231 is provided on the end of the second connecting rod 222 that connects to the third connecting rod 223. After the position of the second connecting rod 222 is adjusted, both ends of the second connecting rod 222 can be locked using the first locking nut 2211 and the second locking nut 2231 respectively. The cross-section of the second connecting rod 222 can be hexagonal or quadrilateral.

[0079] The first connecting rod 221 is rotatably connected to the first bearing 110 via the first bearing ring 2212, and the third connecting rod 223 is rotatably connected to the second bearing 343 via the second bearing ring 2232.

[0080] The transmission chain 210 is connected by a swivel chain head, which makes it easy to determine the length of the transmission chain 210 and the length of the connecting rod assembly 220 based on the distance between the locking screw 31 and the first clamping plate group 430 on site.

[0081] An embodiment of this application also provides a method for installing a disassembly and assembly fixture for a deep-insertion bushing locking screw 31. The power mechanism 100 is connected to the drive mechanism 300 via a transmission mechanism 200. The installation method includes the following steps:

[0082] The drive mechanism 300 extends between the bushing 20 and the sealing box 30;

[0083] The power mechanism 100 is moved so that the power mechanism 100 drives the drive mechanism 300 to move through the transmission mechanism 200, and the camera component 310 in the drive mechanism 300 moves to obtain the position of the locking screw 31;

[0084] Once the camera assembly 310 has acquired the position of the screw, the drive mechanism 300 is kept stationary while the power mechanism 100 is fixed on the pump shaft 10.

[0085] The push assembly 330 extends so that the end of the push assembly 330 away from the drive head 320 abuts against the sealing box 30, while the drive head 320 is inserted into the threaded groove of the locking screw 31.

[0086] Before using the tooling for disassembling and assembling the deep-set bushing locking screw 31 of this application, first check whether the power mechanism 100, transmission mechanism 200 and drive mechanism 300 meet the design requirements, such as whether the geometric tolerances, dimensional tolerances, surface finish, and reference dimensions meet the design requirements, and ensure that the surfaces of the power mechanism 100, transmission mechanism 200 and drive mechanism 300 are clean, free of dust and debris, and can be installed in place. Fill each bearing part with lubricant and anti-seize agent.

[0087] During installation, first connect the power mechanism 100, transmission mechanism 200, and drive mechanism 300 in sequence. Then, insert the drive mechanism 300 between the bushing 20 and the sealing box 30. Next, move the power mechanism 100 so that it drives the drive mechanism 300 to move through the transmission mechanism 200, thereby moving the camera component 310 in the drive mechanism 300 to obtain the position of the locking screw 31. After the camera component 310 obtains the position of the screw, keep the drive mechanism 300 stationary and fix the power mechanism 100 on the pump shaft 10.

[0088] When obtaining the position of the locking screw 31, the camera 313, the light-emitting diode 312 and the first level 341 are first turned on through the interactive terminal. At this time, the infrared level emits a cross beam, which illuminates a cross beam on the axis of the pump shaft 10. The camera 313 takes a picture to see if the cross beam and the countersunk groove position are consistent. If they are inconsistent, the drive mechanism 300 continues to move. If they are consistent, the drive mechanism 300 is kept still and the power mechanism 100 is fixed.

[0089] During disassembly or installation, first turn on the power supply to the solenoid valve coil, then push out the push rod 332, insert the drive head 320 into the countersunk groove of the locking screw 31, and maintain appropriate clamping force; then turn the handwheel 130, the handwheel 130 drives the transmission chain 210 to drive the drive head 320 to rotate, and then drive the locking screw 31 to rotate through the drive head 320, so as to disassemble the locking screw 31.

[0090] It should be noted that the drive head 320 of this application is detachable. When the drive head 320 used for cleaning is replaced, the tooling for disassembling and assembling the deep-penetrating bushing locking screw 31 of this application can also be used for cleaning. When the drive head 320 used for drilling is replaced, the tooling for disassembling and assembling the deep-penetrating bushing locking screw 31 of this application can also be used for drilling. That is, the tooling for disassembling and assembling the deep-penetrating bushing locking screw 31 of this application is suitable for cleaning, drilling, and bolt disassembly and assembly of inaccessible parts of various large, medium and small equipment; avoiding the risk of downtime for full inspection and damage caused by the inability to handle defects in confined space components of large and medium-sized water pumps or other equipment, such as the installation and maintenance of all vertical or horizontal multi-stage or single-stage water pumps.

[0091] 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.

[0092] 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 tooling for disassembling and assembling a deep-insertion shaft sleeve locking screw, wherein the shaft sleeve is fitted over a portion of a pump shaft, and the locking screw passes radially through the shaft sleeve along the pump shaft, characterized in that... The disassembly and assembly fixture includes a power mechanism, a transmission mechanism, and a drive mechanism arranged sequentially along the axial direction of the pump shaft. The power mechanism is mounted on the pump shaft and is connected to the drive mechanism via the transmission mechanism to drive the drive mechanism to rotate around its own axis. The drive mechanism includes: A camera assembly is used to capture the position of the locking screw; A drive head is coaxially arranged with the camera assembly, and the axial direction of the drive head is radially along the pump shaft, which is the same as the axial direction of the camera assembly. A pushing assembly is disposed at the end of the drive head away from the bushing, the pushing assembly being used to push the drive head radially into the countersunk groove of the locking screw; The drive mechanism includes a first housing that is pulsatorically connected to the transmission mechanism. The drive head is mounted at one end of the first housing. The camera assembly is mounted inside the first housing. The drive head has a light-transmitting hole. The camera assembly is used to obtain the position of the locking screw through the light-transmitting hole. The actuating component includes: The second housing is connected to the end of the first housing that is furthest from the drive head; An electromagnetic coil is disposed inside the second housing; A push rod, which is a magnet, has one end inserted into the electromagnetic coil and the other end extended out of the second housing. A stop structure is provided between the two ends of the push rod. An elastic element is sleeved outside the push rod, with one end of the elastic element abutting against the inner wall of the second housing and the other end abutting against the stop structure.

2. The disassembly and assembly fixture for the deep-insertion bushing locking screw according to claim 1, characterized in that, The drive mechanism includes a first level disposed in the first housing and near one end of the drive head. The first level is used to emit cross rays radially along the pump shaft to locate the position of the locking screw.

3. The tooling for disassembling and assembling the deep-insertion bushing locking screw according to any one of claims 1-2, characterized in that, The disassembly and assembly tooling includes an auxiliary bushing, which is sleeved on the outside of the pump shaft. One end of the auxiliary bushing is used to abut against the shaft sleeve, and the power mechanism is located at the other end of the auxiliary bushing.

4. The disassembly and assembly fixture for the deep-insertion bushing locking screw according to claim 3, characterized in that, The auxiliary bushing includes at least two arc bushings that form a ring structure. The disassembly and assembly tooling includes a connecting plate assembly. The connecting plate assembly is fixed to the end of the auxiliary bushing away from the bushing. The connecting plate assembly includes at least two arc connecting plates that can form a ring structure. Along the circumference of the auxiliary bushing, the arc connecting plates are offset from the arc bushings.

5. The disassembly and assembly fixture for the deep-insertion bushing locking screw according to claim 3, characterized in that, The disassembly and assembly fixture includes at least one clamping plate assembly sleeved outside the auxiliary bushing. The clamping plate assembly includes at least two arc-shaped clamping plates. Each arc-shaped clamping plate has ears at both ends. Adjacent arc-shaped clamping plates are connected to each other through the ears. The power mechanism is mounted on the clamping plate assembly.

6. The disassembly and assembly fixture for the deep-insertion bushing locking screw according to claim 5, characterized in that, At least one clamping plate assembly includes a first clamping plate assembly for setting the power mechanism; The first clamping plate assembly and the connecting plate assembly are connected by a first bolt and a second bolt. The first bolt is threaded to the connecting plate assembly and one end abuts against the first clamping plate assembly. The second bolt passes through the connecting plate assembly and the first clamping plate assembly in sequence to lock with the locking nut.

7. The disassembly and assembly tooling for the deep-insertion bushing locking screw according to any one of claims 1-2, characterized in that, The transmission mechanism includes: A transmission chain, one end of which is connected to the power mechanism and the other end of which is connected to the drive mechanism; A connecting rod assembly is arranged parallel to the transmission chain. One end of the connecting rod assembly is rotatably connected to the power mechanism, and the other end of the connecting rod assembly is rotatably connected to the drive mechanism.

8. The disassembly and assembly fixture for the deep-insertion bushing locking screw according to claim 7, characterized in that, The connecting rod assembly includes a first connecting rod, a second connecting rod, and a third connecting rod arranged sequentially along the axial direction of the pump shaft. One end of the second connecting rod is connected to the first connecting rod via a first thread, and the other end of the second connecting rod is connected to the third connecting rod via a second thread. The helical directions of the first thread and the second thread are opposite.

9. A method for installing a disassembly and assembly fixture for a deep-insertion bushing locking screw as described in any one of claims 1-8, wherein the power mechanism is connected to the drive mechanism via the transmission mechanism, characterized in that... The installation method includes the following steps: The drive mechanism extends between the bushing and the sealing box; The power mechanism is moved so that it drives the drive mechanism to move through the transmission mechanism, and the camera component in the drive mechanism moves to obtain the position of the locking screw. Once the camera assembly has located the screw, keep the drive mechanism stationary and fix the power mechanism onto the pump shaft. The push assembly extends so that the end of the push assembly away from the drive head abuts against the sealing body, while the drive head is inserted into the threaded groove of the locking screw.

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