A large-scale spreading section dismounting device and method

Abstract

The application discloses a large-scale diffusion section dismounting device, which comprises a hanging beam, a movable hook arranged at the top end of the hanging beam, a main shaft, one end of which is connected with the hanging beam through a rotating mechanism, the other end of which is connected with a rocker arm sliding block mechanism, the rocker arm sliding block mechanism comprising a supporting disc, a driving rod and a sliding block assembly arranged on the supporting disc, a rocker arranged between the driving rod and the sliding block assembly, a handle connected with the driving rod, and a locking rod for locking the supporting disc and the driving rod, one end of the main shaft being sequentially connected with the supporting disc and the driving rod, the sliding block assembly comprising a first sliding rail and a second sliding rail and a sliding block arranged between the first sliding rail and the second sliding rail, the sliding block being slidable to the outside of the edge of the supporting disc, a diffusion section wrench arranged on the main shaft and at one end of the rotating mechanism, the diffusion section wrench being connected with the two ends of the diffusion section respectively. The application provides a large-scale diffusion section dismounting method, and the device and the method realize efficient, safe and reliable installation of the large-scale diffusion section.

Description

Technical Field

[0001] This invention belongs to the field of disassembly and assembly device technology, specifically relating to a large-scale diffusion section disassembly and assembly device and method. Background Technology

[0002] like Figure 1 The diffusion section of the aircraft product shown is large in size and heavy, making manual installation impossible. The inner side of the diffusion section is conical, making it unsuitable for lifting and disassembly by direct support. Furthermore, the outer side, which needs to be inserted into the inner bore during installation, cannot be used as a lifting point. Additionally, the diffusion section is threaded to a component, requiring it to be supported and rotated during installation.

[0003] Most spreading sections are currently small in size and lightweight, and can be directly picked up by hand and rotated onto the part to be assembled. For the installation of such heavy and large spreading sections, multiple workers lift the spreading section together and gradually find the horizontal position and slowly rotate it for installation, but after many attempts, they have failed, and it is expected that more time and attempts will be needed to succeed. The main disadvantages of this method are: (1) It requires a large number of workers, at least 3 operators and 1 supervisor; (2) It is inefficient, and after many attempts, it is difficult to succeed, which is time-consuming and labor-intensive; (3) It has low safety and reliability. The spreading section is heavy, and manual installation will cause a greater risk of product falling and injury, and may also cause personnel injury. Moreover, the long installation time makes it easier for personnel to become fatigued and make mistakes. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a large-scale spreading section disassembly and assembly device and method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A large-scale spreading section disassembly and assembly device includes a lifting beam with a movable hook at the top of the lifting beam;

[0007] The main shaft is connected to the lifting beam at one end via a rotating mechanism and to the rocker arm slider mechanism at the other end.

[0008] The rocker arm slider mechanism includes a support plate, a drive rod and a slider assembly disposed on the support plate, a rocker arm disposed between the drive rod and the slider assembly, a handle connected to the drive rod, and a locking rod for locking the support plate and the drive rod; one end of the main shaft is connected to the support plate and the drive rod in sequence.

[0009] The slider assembly includes a first slide rail and a second slide rail, and a slider disposed between the first slide rail and the second slide rail, the slider being slidable to the outer edge of the support plate;

[0010] The diffuser wrench is located at one end of the main shaft near the rotating mechanism. The diffuser wrench and the support plate are respectively connected to the two ends of the diffusion section.

[0011] The lifting beam is L-shaped; a rack is installed along the length of the top of the lifting beam, and hooks are sleeved on the lifting beam. The bottom is connected to the rack via screws.

[0012] The rotating mechanism is connected to one end of the lifting beam via a reinforcing rib.

[0013] The rotating mechanism includes a bearing housing, bearings located on both sides of the bearing housing, and a bushing that passes through the inner hole of the bearing; the main shaft and the rotating mechanism are connected by a clearance fit and are fastened by nuts and washers.

[0014] The diffuser wrench is connected to the main shaft via a clearance fit and is secured with a nut.

[0015] The slider assembly is set in two groups, located on the same straight line as the support plate.

[0016] The rocker arm is hinged to the drive rod and the slider via a rotating pin; a cotter pin for locking is provided at one end of the rotating pin.

[0017] The spindle is connected to the support plate by threads, and the spindle passes through the support plate and is connected to the drive rod with a clearance fit; the connection between the spindle and the support plate is locked by nuts and washers.

[0018] The first and second slide rails are mounted on the support plate using hex bolts.

[0019] A method for disassembling and assembling a large spreading section includes the following steps:

[0020] S1. The main shaft, together with the rocker arm and slider mechanism, extends from the large end to the small end of the spreading section. When the slider of the rocker arm and slider mechanism extends out of the first end face of the small end of the spreading section, the extension stops.

[0021] S2. By cranking the drive rod with the handle, the slider is slid to the outside of the support plate edge to block the end face of the small end of the spreading section, thereby achieving axial fixation of the spreading section. The rocker arm slider mechanism is fixed by using the locking rod support plate and the drive rod.

[0022] S3. The support plate supports the inner conical surface of the small end of the spreading section, and the large end of the spreading section is supported and fixed by the spreading section wrench. The two achieve radial support for the spreading section.

[0023] S4. Use an overhead crane to lift the hook. During the lifting process, continuously adjust the engagement position of the hook and rack to make the spreading section horizontal. Insert the spreading section into the part to be assembled for assembly.

[0024] S5. After assembly, remove the locking rod, and retract the slider by shaking the handle. Insert the locking rod back into the support plate to fix the rocker arm slider mechanism, and remove the disassembly and assembly device from the spreading section.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] The present invention provides a large-scale spreading section disassembly and assembly device and method, which realizes the disassembly and assembly of large-scale spreading sections, reduces the number of personnel involved in disassembly and assembly, shortens the disassembly and assembly time, improves the safety and reliability of disassembly and assembly of large-scale spreading sections, and achieves efficient, safe and reliable installation of large-scale spreading sections.

[0027] By designing a rocker arm and slider mechanism, the axial positioning and radial support of the inner conical spreading section are achieved, solving the problems of radial support and axial fixation of the inner conical spreading section and preventing the inner conical spreading section from slipping axially.

[0028] The handle and locking rod enable the operation and positioning of the rocker arm linkage mechanism installed inside the spreading section, preventing the spreading section from falling due to the slider contracting under external force.

[0029] The rotating mechanism between the main shaft and the lifting beam enables the rotary installation of the spreading section.

[0030] The adjustable rack design of the lifting beam allows for adjustment of the center of gravity during the hoisting of the spreading section, ensuring horizontal adjustment during the installation process. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the diffusion section of a certain aircraft product.

[0033] Figure 2 This is a schematic diagram of the structure of a large-scale spreading section disassembly and assembly device in this invention;

[0034] Figure 3 for Figure 2 The right view;

[0035] Figure 4 for Figure 3 Enlarged schematic diagram of the rocker arm slider mechanism;

[0036] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0037] Figure 6 for Figure 2 Enlarged view of point B in the middle;

[0038] Figure 7 This is a schematic diagram of the assembly of the disassembly and assembly device and the diffusion section of the present invention;

[0039] Reference numerals: 1-Lifting beam, 11-Hook, 12-Rack, 2-Main shaft, 21-Bearing seat, 22-Bearing, 23-Busset, 3-Rocker arm slider mechanism, 31-Support plate, 32-Drive rod, 33-Rock arm, 34-Handle, 35-Locking rod, 36-First slide rail, 37-Second slide rail, 38-Slider, 4-Diffusion section wrench, 5-Reinforcing rib, 6-Rotating pin, 61-Cotter pin, 7-Diffusion section. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. All modifications, substitutions and alterations made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0041] Reference Figures 1 to 7 The present invention provides a large-scale spreading section disassembly and assembly device, including a lifting beam 1, and a movable hook 11 is provided at the top of the lifting beam 1 as the lifting point of the disassembly and assembly device; in this embodiment, the lifting beam 1 is generally L-shaped and is welded from multiple plates, which is convenient to process and can meet the strength requirements with less material.

[0042] A rack 12 is provided along the length of the top of the lifting beam 1. The rack 12 is composed of multiple parallel semi-circular slots. A hook 11 is sleeved on the lifting beam 1 and connected to the rack 12 at the bottom by a screw. The outer wall of the screw is adapted to the semi-circular slot. The hook 11 can be adjusted in different semi-circular slots of the rack 12 by the screw, thereby adjusting the lifting center of gravity and thus adjusting the horizontal level of the spreading section 7.

[0043] The main shaft 2 is connected to the lifting beam 1 at one end via a rotating mechanism and to the rocker arm slider mechanism 3 at the other end; it also serves as the support shaft for the lifting and spreading section 7. Specifically, the main shaft 2 is parallel to the top of the lifting beam 1 and vertically connected to the side wall of the lifting beam 1.

[0044] The rotating mechanism is connected to the side wall of the lifting beam 1 via reinforcing ribs 5. The rotating mechanism includes a bearing housing 21 and bearings 22 located in the inner holes on both sides of the bearing housing 21, with an interference fit to fix the outer ring of the bearings 22. A bushing 23 passes through the inner hole of the bearing 22, and a clearance fit allows free rotation within the bearing 22. The main shaft 2 is connected to the rotating mechanism with a clearance fit, and the end of the main shaft 2 away from the rocker arm slider mechanism 3 is secured with a nut and a washer. The rotating mechanism enables the rotation of components such as the main shaft 2 and the rocker arm slider mechanism 3, further facilitating the rotational installation of the spreading section 7.

[0045] The rocker arm slider mechanism 3 includes a support plate 31. One end of the main shaft 2 is threaded to the center of the support plate 31 and passes through the support plate 31. The connection between the main shaft 2 and the support plate 31 is locked with a nut and a washer. The support plate 31 serves as the mounting base of the rocker arm slider mechanism 3, supporting the entire rocker arm slider mechanism 3. At the same time, the support plate 31 directly supports the inner conical surface of the spreading section 7 as a support component, thus supporting the spreading section 7.

[0046] A drive rod 32 and a slider assembly are provided on the support plate 31. One end of the drive rod 32 extends out of the support plate 31. The lower part of the drive rod 32 is connected to the end of the main shaft 2 that passes through the support plate 31 using a clearance fit.

[0047] A handle 34 is provided at the extended end of the drive rod 32 and is vertically connected thereto; the handle 34 is provided to realize the movement of the drive rod 32 and the sliding component; the handle 34 is connected to the drive rod 32 by a nut.

[0048] Two sets of slider assemblies are configured and positioned on the same straight line as the support plate 31. Each slider assembly includes a first slide rail 36 and a second slide rail 37, and a slider 38 positioned between the first and second slide rails 36 and 37. The slider 38 can slide to the outer edge of the support plate 31. The first and second slide rails 36 and 37 are mounted to the support plate 31 using hexagonal socket head cap screws. The first and second slide rails 36 and 37 serve as the sliding tracks for the slider 38, defining its direction of movement and spatial dimensions. The slider 38, as the driven component of the rocker arm slider mechanism 3, slides with the first and second slide rails 36 and 37 in a clearance fit, achieving axial positioning of the spreading section 7 during movement.

[0049] The drive rod 32 and the support plate 31 are respectively provided with mounting holes for locking rods 35. The locking rods 35 are inserted to limit the rocker arm slider mechanism 3. One mounting hole is provided on the drive rod 32, and multiple holes are provided on the support plate 31. In this invention, the locking rod 35 is a free component. During use, it is inserted into the corresponding mounting holes on the support plate 31 and the drive rod 32 to lock the support plate 31 and the drive rod 32.

[0050] A rocker arm 33 is provided between the slider 38 and the drive rod 32. In this embodiment, two rocker arms 33 are provided, one of which is located at one end of the drive rod 32 and the other is located at the middle of the drive rod 32. The rocker arms 33 are hinged to the drive rod 32 and the slider 38 respectively through a rotating pin 6. A cotter pin 61 for locking is provided at one end of the rotating pin 6 to prevent the rotating pin 6 from falling off.

[0051] During the disassembly and assembly of the spreading section 7, the drive rod 32 is the driving component of the rocker arm slider mechanism 3. The drive rod 32 is controlled by the handle 34, and the rocker arm 33 transmits the motion and force from the drive rod 32 to the slider 38 to realize the movement of the slider 38; thereby causing the slider 38 to extend and realize the axial fixation of the spreading section 7. When the disassembly and assembly device is withdrawn from the spreading section 7, the slider 38 is retracted by the handle 34 to remove the disassembly and assembly device.

[0052] The diffuser wrench 4 is located at one end of the main shaft 2 near the rotating mechanism. Specifically, the diffuser wrench 4 is set close to the rotating mechanism. The diffuser wrench 4 is connected to the main shaft 2 through a clearance fit and is fastened by nuts and washers. The diffuser wrench 4 and the support plate 31 are respectively connected to the two ends of the spreading section 7, and the two work together to fix the spreading section 7.

[0053] A method for disassembling and assembling a large spreading section includes the following steps:

[0054] S1. The main shaft 2, together with the rocker arm slider mechanism 3, extends from the large end to the small end of the spreading section 7. When the slider 38 of the rocker arm slider mechanism 3 extends out of the first end face of the small end of the spreading section 7, the extension stops.

[0055] S2. By shaking the drive rod 32 with the handle 34, the slider 38 is slid to the outside of the edge of the support plate 31 to block the end face of the small end of the spreading section 7, thereby fixing the spreading section 7 axially. The locking rod 35 is inserted into the corresponding mounting holes of the support plate 31 and the drive rod 32 to fix the rocker arm slider mechanism 3.

[0056] S3. The support plate 31 supports the inner conical surface of the small end of the spreading section 7, and the large end of the spreading section 7 is supported and fixed by the spreading section wrench 4. The two achieve radial support for the spreading section 7.

[0057] S4. After the spreading section 7 is supported and fixed in both the axial and radial directions, use an overhead crane to lift the hook 11. During the lifting process, continuously adjust the engagement position of the hook 11 and the rack 12 to adjust the center of gravity of the entire object to be aligned with the lifting point of the overhead crane, so that the spreading section 7 reaches a horizontal state. Insert the spreading section 7 into the part to be assembled for assembly. Specifically, insert the spreading section 7 into the inner hole of the part to be assembled. When the internal thread of the small end of the spreading section 7 approaches the external thread of the part to be assembled, slowly rotate the spreading section 7 to find the right thread and install the spreading section 7 onto the part to be assembled. Note that after the spreading section 7 is rotated and screwed into the part to be assembled several times, the assembly is complete.

[0058] S5. After assembly, remove the locking rod 35, and retract the drive rod 32 and slider 38 by shaking the handle 34. Insert the locking rod 35 into the support plate 31 again to fix the rocker arm slider mechanism 3, and remove the disassembly and assembly device from the spreading section 7.

[0059] The present invention provides a large-scale spreading section disassembly and assembly device and method, which realizes the disassembly and assembly of the large-scale spreading section 7, reduces the number of personnel involved in disassembly and assembly, shortens the disassembly and assembly time, improves the safety and reliability of the disassembly and assembly of the large-scale spreading section 7, and achieves efficient, safe and reliable installation of the large-scale spreading section 7.

[0060] By designing the rocker arm slider mechanism 3, the axial positioning and radial support of the inner conical spreading section 7 are achieved, solving the problems of radial support and axial fixation of the inner conical spreading section 7 and preventing the inner conical spreading section 7 from slipping axially.

[0061] The handle 34 and the locking rod 35 enable the operation and position fixation of the rocker arm linkage mechanism installed inside the spreading section 7, preventing the slider 38 from contracting due to external force and causing the spreading section 7 to fall.

[0062] The rotating mechanism between the main shaft 2 and the lifting beam 1 enables the rotational installation of the spreading section 7.

[0063] The adjustable rack 12 of the lifting beam 1 section can adjust the center of gravity of the spreading section 7 during hoisting, ensuring the horizontal adjustment of the spreading section 7 during installation.

[0064] The foregoing has provided a detailed description of a large-scale spreading section disassembly and assembly device and method provided by the present invention. Specific examples have been used to illustrate the structure and working principle of the invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A large-scale spreading section disassembly and assembly device, characterized in that: Includes a lifting beam (1), and a movable hook (11) is provided at the top of the lifting beam (1). The main shaft (2) is connected to the lifting beam (1) at one end via a rotating mechanism; and to the rocker arm slider mechanism (3) at the other end. The rocker arm slider mechanism (3) includes a support plate (31), a drive rod (32) and a slider assembly disposed on the support plate (31), a rocker arm (33) disposed between the drive rod (32) and the slider assembly, a handle (34) connected to the drive rod (32), and a locking rod (35) for locking the support plate (31) and the drive rod (32); one end of the main shaft (2) is connected to the support plate (31) and the drive rod (32) in sequence; The slider assembly includes a first slide rail (36) and a second slide rail (37), and a slider (38) disposed between the first slide rail (36) and the second slide rail (37), the slider (38) being slidable to the outer edge of the support plate (31); The diffuser wrench (4) is located at one end of the main shaft (2) near the rotating mechanism. The diffuser wrench (4) and the support plate (31) are respectively connected to the two ends of the diffusion section (7). The lifting beam (1) is L-shaped; a rack (12) is provided along the length of the top of the lifting beam (1), and a hook (11) is sleeved on the lifting beam (1), with the bottom connected to the rack (12) by a screw; The rotating mechanism is connected to one end of the lifting beam (1) via a reinforcing rib (5); The rotating mechanism includes a bearing housing (21), bearings (22) located on both sides of the bearing housing (21), and a bushing (23) inserted into the inner hole of the bearing (22); the main shaft (2) is connected to the rotating mechanism with a clearance fit and is fastened by nuts and washers.

2. The large-scale spreading section disassembly and assembly device according to claim 1, characterized in that: The diffuser wrench (4) is connected to the main shaft (2) through a clearance fit and is tightened by a nut.

3. The large-scale spreading section disassembly and assembly device according to claim 1, characterized in that: The slider assembly is set in two groups and located on the same straight line of the support plate (31).

4. A large-scale spreading section disassembly and assembly device according to claim 3, characterized in that: The rocker arm (33) is hinged to the drive rod (32) and the slider (38) respectively via a rotating pin (6); a cotter pin (61) for locking is provided at one end of the rotating pin (6).

5. A large-scale spreading section disassembly and assembly device according to claim 1, characterized in that: The spindle (2) is connected to the support plate (31) by a thread, and the spindle (2) passes through the support plate (31) and is connected to the drive rod (32) with a clearance fit; the connection between the spindle (2) and the support plate (31) is locked by a nut and a washer.

6. A large-scale spreading section disassembly and assembly device according to claim 1, characterized in that: The first slide rail (36) and the second slide rail (37) are mounted on the support plate (31) by hex bolts.

7. A method for disassembling and assembling a large-scale spreading section disassembly and assembly device according to claim 1, characterized in that: Includes the following steps: S1. The main shaft (2) together with the rocker arm slider mechanism (3) extends from the large end to the small end of the spreading section (7). When the slider (38) of the rocker arm slider mechanism (3) extends out of the first end face of the small end of the spreading section (7), the extension stops. S2. By shaking the drive rod (32) with the handle (34), the slider (38) is slid to the outside of the edge of the support plate (31) to block the end face of the small end of the spreading section (7), thereby fixing the spreading section (7) axially. The locking rod (35) is inserted into the support plate (31) and the drive rod (32) to fix the rocker arm slider mechanism (3). S3. The support plate (31) supports the inner conical surface of the small end of the spreading section (7), and the large end of the spreading section (7) is supported and fixed by the spreading section wrench (4). The two achieve radial support of the spreading section (7). S4. Use an overhead crane to lift the hook (11). During the lifting process, continuously adjust the engagement position of the hook (11) and the rack (12) to make the spreading section (7) reach a horizontal state; then insert the spreading section (7) into the part to be assembled for assembly. S5. After assembly, take out the locking rod (35), shake the drive rod (32) and the slider (38) with the handle (34) to retract, insert the locking rod (35) into the support plate (31) again to fix the rocker arm slider mechanism (3), and remove the disassembly and assembly device from the spreading section (7).

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