High pressure rotor interstage bolt disassembly mechanism

Abstract

The utility model provides a kind of high-pressure rotor interstage bolt disassembly mechanism, it is related to bolt disassembly technical field, and it includes: main part, link part and open-close interface;The open-close interface is connected between main part and link part, and the switching of main part and link part in closed state and open state is controlled;Kinetic energy input interface is provided on the main part, and kinetic energy output interface is provided on the link part, and transmission device is provided with transmission connection between the kinetic energy input interface and the kinetic energy output interface.The utility model can provide adaptation narrow blind cavity, expand operating range.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt decomposition technical field, specifically, relate to a high pressure rotor interstage bolt decomposition mechanism. BACKGROUND

[0002] In the high pressure cylinder inside of turbine, gas turbine and similar closed / semi-closed narrow space scene, with the characteristics of limited operation space, obstructed vision, tight gap, under the blind field of view state in the cavity, the existing operation mode is manual using sleeve+extension rod to decompose the bolt, because the operation angle is tricky under the usual condition, and the bolt is uniformly distributed in a week, so it is time-consuming and laborious to operate.

[0003] Defects in the prior art:

[0004] 1, when the production rhythm requirement is higher, the manual disassembly speed will not meet the production operation demand, and it needs more than one hour of operation time to loosen 42 bolts in a circle under the conventional condition;2, when the bolt (such as ≥50N.m) is decomposed, because the bolt is in the blind cavity, manual cannot be visual, and the upper part is hindered, manual cannot ensure that the bolt can be loosened at one time, and in most cases, there will be slip and other conditions, which not only damages the bolt, but also causes the wrench to knock the workpiece due to slip. Utility model content

[0005] In view of the defects in the prior art, the utility model provides a high pressure rotor interstage bolt decomposition mechanism.

[0006] According to the high pressure rotor interstage bolt decomposition mechanism provided by the utility model, the scheme is as follows:

[0007] A high pressure rotor interstage bolt decomposition mechanism, comprising: a main body part, a connecting part and an opening and closing interface;The opening and closing interface is connected between the main body part and the connecting part, and controls the switching of the main body part and the connecting part between the closed state and the open state;

[0008] The main body part is provided with a kinetic energy input interface, and the connecting part is provided with a kinetic energy output interface, and a transmission device is arranged in transmission connection between the kinetic energy input interface and the kinetic energy output interface.

[0009] Preferably, the transmission device is a gear transmission assembly, which at least contains a driving gear and a driven gear;Wherein, the center shaft of the driving gear is coaxially fixed with the power output end of the kinetic energy input interface, the center shaft of the driven gear is coaxially fixed with the power input end of the kinetic energy output interface, and the driving gear transmits power to the driven gear through tooth surface engagement.

[0010] Preferably, multiple transition gears are added between the driving gear and the driven gear, and the meshing clearance of all gear teeth is controlled within a preset accuracy range;

[0011] The rotation of the driving gear drives the intermediate gear to rotate in the opposite direction around its own axis. The intermediate gear then drives the driven gear to rotate in the same direction through tooth surface meshing. Multi-stage gear meshing transmission realizes the transmission of power and torque.

[0012] Preferably, the main body is provided with a receiving cavity on the side facing the connecting part when it is folded and closed, and when the main body and the connecting part are in a closed state, a part of the connecting part is placed into the receiving cavity.

[0013] Preferably, the end of the main body away from the connecting part is provided with a folding part that is folded towards the side that is folded with the connecting part. When the main body and the connecting part are in a closed state, the end of the connecting part is tangent to the folding surface of the folding part.

[0014] Preferably, a locking interface is provided at the junction of the main body and the connecting part, and the locking interface is used to lock the open state of the locking mechanism.

[0015] Preferably, the locking interface includes a rotatably mounted latch and a locking rod that engages with the latch. When the mechanism is in the open state, the latch rotates and engages with the locking rod, thereby locking the mechanism in the open state.

[0016] Preferably, the latch includes a rotating part, an extension part connected to the rotating part, and a snap-fit ​​part with one end of the extension part bent toward the locking rod. During operation, the latch rotates to engage the snap-fit ​​part with the locking rod to complete the locking.

[0017] Preferably, the main body and the connecting part are provided with mounting grooves, and the locking interface is embedded in the mounting groove.

[0018] Preferably, a vision camera is built into the front end of the connecting part on the side away from the main body. The vision camera is configured to take pictures to identify the bolt position and realize the automatic alignment of the bolt position.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Adaptable to narrow blind cavity spaces, expanding the working range. Through the automatic opening and closing mechanism, it can freely extend within a limited space. In the closed state, the diameter is 122mm (smaller than the cavity's allowable diameter of 130mm), allowing free entry and exit. When opened, the working radius is 180mm, which can cover the loosened bolt positions, solving the problem of working in narrow blind cavities.

[0021] 2. Improve work efficiency and adapt to high production cycle time. Through gear transmission, the force is stably transmitted and the tightening position is changed, which greatly shortens the operation time and meets the requirements of high production cycle time.

[0022] 3. To ensure the quality and safety of disassembling high-torque bolts, the built-in vision camera performs visual recognition and automatic alignment, achieving real-time monitoring and data traceability of the operation process. It can loosen the bolts accurately in one go, avoiding the problems of stripped threads damaging the bolts and the wrench hitting the workpiece.

[0023] 4. Enhance the continuity and stability of operations, reduce costs, and improve the continuity and stability of operations by relying on automated configuration to reduce human error and downtime; at the same time, reduce manpower input, shorten time, and reduce manpower and time costs.

[0024] Other beneficial effects of this utility model will be explained in detail through the introduction of specific technical features and technical solutions in the specific embodiments. Those skilled in the art should be able to understand the beneficial technical effects brought about by the technical features and technical solutions through the introduction of these technical features and technical solutions. Attached Figure Description

[0025] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of the disassembly mechanism;

[0027] Figure 2 This is a schematic diagram of the decomposition mechanism in its closed state.

[0028] Figure 3 A schematic diagram showing the external dimensions of the disassembly mechanism in its closed state;

[0029] Figure 4 A schematic diagram showing the external dimensions of the disassembly mechanism in its open state;

[0030] Figure 5 This is a schematic diagram of the locking state of the locking interface;

[0031] Figure 6 This is a diagram illustrating the usage process;

[0032] Figure 7 This is a schematic diagram of kinetic energy access;

[0033] Figure 8 This is a schematic diagram showing the amplified input of kinetic energy.

[0034] Reference numerals: 1. Main body; 11. Kinetic energy input interface; 2. Connecting part; 21. Kinetic energy output interface; 3. Opening and closing interface; 4. Transmission device; 41. Driving gear; 42. Driven gear; 43. Transition gear; 5. Locking interface; 51. Lock; 511. Rotating part; 512. Extension part; 513. Snap-fit ​​part; 52. Locking rod; 6. Receiving cavity; 7. Mounting groove; 8. Folding part. Detailed Implementation

[0035] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0036] This utility model embodiment provides a high-pressure rotor interstage bolt disassembly mechanism, suitable for loosening nuts in confined spaces where the center radius of the bolt loosening location is greater than the inner diameter of the disc core (e.g., the cavity allows a diameter of 130mm, but the radius of the bolt location is greater than 130mm). In this case, the loosening mechanism cannot operate directly above the bolt, and the bolt is inside the product, making its location visually inaccessible, such as when loosening bolts in the blind cavities of high-pressure compressor discs in the aerospace field. (Refer to...) Figure 1 As shown, the disassembled structure specifically includes: a main body 1, a connecting part 2, and an opening / closing interface 3; the opening / closing interface 3 connects the main body 1 and the connecting part 2, and controls the switching between the main body 1 and the connecting part 2 in a closed state and an open state.

[0037] The main body 1 is provided with a kinetic energy input interface 11, and the connecting part 2 is provided with a kinetic energy output interface 21. A transmission device 4 is provided to drive the kinetic energy input interface 11 and the kinetic energy output interface 21. In this embodiment, the transmission device 4 is a gear transmission assembly, which includes at least a driving gear 41 and a driven gear 42. The central axis of the driving gear 41 is coaxially fixed with the power output end of the kinetic energy input interface 11, and the central axis of the driven gear 42 is coaxially fixed with the power input end of the kinetic energy output interface 21. The driving gear 41 transmits power to the driven gear 42 through tooth surface meshing. The structural design of the gear transmission assembly is adapted to the overall diameter requirements of the mechanism in the closed state, does not exceed the outer contour dimensions of the mechanism in the closed state, and ensures that the mechanism can freely enter and exit narrow spatial cavities with a certain diameter.

[0038] In this design, multiple transition gears 43 are added between the driving gear 41 and the driven gear 42, and the meshing clearance of all gears is controlled within a preset precision range. The rotation of the driving gear 41 drives the transition gears 43 to rotate in the opposite direction around their own axes. The transition gears 43 then drive the driven gear 42 to rotate in the same direction through tooth meshing. This multi-stage gear meshing transmission achieves power and torque transmission, ensuring smooth power transmission. In this embodiment, all gears can be mounted on a single bearing housing. The bearing housing and the main frame of the mechanism are integrally machined or welded together, ensuring that the gear transmission components do not shift or wobble during operation, maintaining the stability of the gear meshing.

[0039] Reference Figure 2 As shown, a receiving cavity 6 is provided on the side of the main body 1 facing the folded-closed connecting part 2. When the main body 1 and the connecting part 2 are in the closed state, a portion of the connecting part 2 is placed into the receiving cavity 6. A folding part 8 is provided on the end of the main body 1 away from the connecting part 2, folded away from the side facing the folded connecting part 2. When the main body 1 and the connecting part 2 are in the closed state, the end of the connecting part 2 is tangent to the folding surface of the folding part 8. The folding part 8 shortens the length of the main body 1, and the receiving cavity 6 can accommodate part of the connecting part 2, further reducing the overall volume of the mechanism after folding, facilitating operation in confined spaces. For specific details, refer to... Figure 3 and Figure 4 As shown, in the closed state, the overall diameter of the loosening mechanism is 122mm, which is smaller than the cavity diameter of 130mm, allowing it to freely enter and exit the cavity. Once the mechanism enters the cavity, the equipment automatically opens the closing mechanism, resulting in an operating radius of 180mm, sufficient to cover the loosened bolt position.

[0040] Reference Figure 5 As shown, a locking interface 5 is also provided at the connection between the main body 1 and the connecting part 2. The locking interface 5 is used to lock the open state of the locking mechanism. The locking interface 5 includes a rotatably disposed latch 51 and a locking rod 52 that engages with the latch 51. When the mechanism is in the open state, the latch 51 rotates and engages with the locking rod 52, thereby locking the open state of the mechanism.

[0041] The latch 51 includes a rotating part 511, an extension part 512 connected to the rotating part 511, and a snap-fit ​​part 513 bent toward the locking rod 52 at one end of the extension part 512. During operation, the latch 51 rotates to snap the snap-fit ​​part 513 into the locking rod 52 to complete the locking.

[0042] The main body 1 and the connecting part 2 are provided with mounting grooves 7, and the locking interface 5 is embedded in the mounting grooves 7. The mounting grooves 7 ensure that the upper surfaces of the main body 1 and the connecting part 2 are flat when the mechanism is open or closed, thus reducing the overall size of the mechanism. A miniature vision camera can also be provided at the front end of the connecting part 2 away from the main body 1, which can automatically take pictures to identify the bolt position and feed the feedback to the actuator, thereby automatically aligning the bolt position and performing the loosening operation.

[0043] Reference Figure 6 As shown, the process route includes:

[0044] 1. The mechanism is in a closed state before operation (e.g.) Figure 2 As shown, the mechanism enters the blind cavity and, after reaching the predetermined position, rotates the opening / closing interface 3 to change the mechanism from a closed state to an open state (as shown). Figure 1 (as shown);

[0045] 2. Then rotate the locking interface 5 to ensure that the mechanism remains in the open state throughout the loosening process (e.g., Figure 3 As shown), the mechanism moves to the bolt position, rises, and snaps the kinetic energy output interface 21 into the bolt;

[0046] 3. Reference Figure 7 and Figure 8 The kinetic energy input terminal is connected to the kinetic energy input interface 11 to provide kinetic energy. The kinetic energy input interface 11 does work. After the driving gear 41 rotates, it drives multiple transition gears 43 and driven gears 42 to rotate in succession. As the kinetic energy output interface 21 rotates, the bolts are loosened.

[0047] This utility model provides a high-pressure rotor stage bolt disassembly mechanism. It is designed for scenarios where the bolt position radius is greater than the cavity diameter in narrow blind cavities (such as high-pressure cylinders in turbine machinery and blind cavities in aviation high-pressure compressor discs), where it is impossible to see the bolts visually and it is difficult to operate from directly above. Through a combination of automatic opening and closing, gear transmission, and visual recognition, it achieves automated, efficient, and safe bolt loosening, while also meeting the needs of production data monitoring and traceability.

[0048] The ultimate goals of this invention are: 1. To improve the automation level of the equipment, enabling data upload, monitoring, and traceability of the production process, reducing the reliance of the production line on the operator's skill level, and typically loosening 42 screws within 10 minutes; 2. To improve the continuity, stability, and safety of production operations, allowing the equipment to accurately and in one go loosen bolts with large torque and obstruction from above through visual recognition; 3. To reduce labor and time costs.

[0049] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0050] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A high-pressure rotor interstage bolt disassembly mechanism, characterized in that, include: The main body (1), the connecting part (2), and the opening and closing interface (3) are connected between the main body (1) and the connecting part (2) and control the switching between the closed state and the open state of the main body (1) and the connecting part (2). The main body (1) is provided with a kinetic energy input interface (11), and the connecting part (2) is provided with a kinetic energy output interface (21). A transmission device (4) is provided to drive the kinetic energy input interface (11) and the kinetic energy output interface (21).

2. The high-pressure rotor interstage bolt disassembly mechanism according to claim 1, characterized in that, The transmission device (4) is a gear transmission assembly, which includes at least a driving gear (41) and a driven gear (42); wherein, the central axis of the driving gear (41) is coaxially fixed with the power output end of the kinetic energy input interface (11), and the central axis of the driven gear (42) is coaxially fixed with the power input end of the kinetic energy output interface (21). The driving gear (41) transmits power to the driven gear (42) through tooth surface meshing.

3. The high-pressure rotor interstage bolt disassembly mechanism according to claim 2, characterized in that, Multiple transition gears (43) are added between the driving gear (41) and the driven gear (42), and the meshing clearance of all gears is controlled within a preset accuracy range. The rotation of the driving gear (41) will drive the intermediate gear (43) to rotate in the opposite direction around its own axis. The intermediate gear (43) will then drive the driven gear (42) to rotate in the same direction through tooth surface meshing. The multi-stage gear meshing transmission realizes the transmission of power and torque.

4. The high-pressure rotor interstage bolt disassembly mechanism according to claim 1, characterized in that, The main body (1) has a receiving cavity (6) on the side facing the connecting part (2) when it is folded and closed. When the main body (1) and the connecting part (2) are in a closed state, a part of the connecting part (2) is placed into the receiving cavity (6).

5. The high-pressure rotor interstage bolt disassembly mechanism according to claim 4, characterized in that, The main body (1) has a folding part (8) at one end away from the connecting part (2) and folded towards the side that is folded with the connecting part (2). When the main body (1) and the connecting part (2) are in a closed state, the end of the connecting part (2) is tangent to the folding surface of the folding part (8).

6. The high-pressure rotor interstage bolt disassembly mechanism according to any one of claims 1-5, characterized in that, A locking interface (5) is also provided at the connection between the main body (1) and the connecting part (2), and the locking interface (5) is used to lock the open state of the locking mechanism.

7. The high-pressure rotor interstage bolt disassembly mechanism according to claim 6, characterized in that, The locking interface (5) includes a rotatably mounted latch (51) and a locking rod (52) that engages with the latch (51). When the mechanism is in the open state, the latch (51) rotates and engages with the locking rod (52) to lock the open state of the mechanism.

8. The high-pressure rotor interstage bolt disassembly mechanism according to claim 7, characterized in that, The latch (51) includes a rotating part (511), an extension part (512) connected to the rotating part (511), and a snap-fit ​​part (513) of the extension part (512) bent toward the locking rod (52) at one end. During operation, the latch (51) rotates to make the snap-fit ​​part (513) snap into the locking rod (52) to complete the locking.

9. The high-pressure rotor interstage bolt disassembly mechanism according to claim 8, characterized in that, The main body (1) and the connecting part (2) are provided with mounting grooves (7), and the locking interface (5) is embedded in the mounting grooves (7).

10. The high-pressure rotor interstage bolt disassembly mechanism according to claim 9, characterized in that, The front end of the connecting part (2) away from the main body (1) is equipped with a vision camera. The vision camera is configured to take pictures to identify the position of the bolt and realize the automatic alignment of the bolt position.

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