Flexible ring rotating riveting device and riveting method for short shells with different diameters

Abstract

The invention provides a flexible ring rotating riveting device for short shells with different diameters and a riveting method. The flexible ring rotating riveting device comprises a rotating frame, a squeeze riveter module, a pin shaft, an electric drill module and a circumferential clamping wheel. The assembling platform is circularly arranged and placed on the ground, pulleys are arranged at the bottom of the rotating frame, and one side close to the assembling platform extends above the assembling platform; the circumferential clamping wheels are movably connected to the sides, close to the assembling platform, of the rotating frames, the outer edges of the circumferential clamping wheels abut against and are connected to the outer edge of the assembling platform in a rolling mode, the distance between the rotating frames and the circumferential clamping wheels is adjustable, and the rotating frames are located on the two sides of the assembling platform, oppositely arranged and coaxially rotate; the electric drill module and the squeeze riveter module are connected to different rotating frames in a lifting mode. The squeeze riveter has the advantages that the weight of the squeeze riveter does not need to be borne by the assembly platform, and the squeeze riveter is supported by a more concise and reliable structure to rotate around the assembly platform.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical manufacturing, and particularly relates to a flexible ring rotary riveting device for short shells with different diameters and a riveting method. BACKGROUND

[0002] Rocket cabin bodies need reliable sealing to ensure safe launching, and due to the limitation of manufacturing technology, the cabin bodies of large rockets need to be assembled in sections, and the size precision and geometric tolerance of the connecting parts are required to be high. The short shell, as a connecting part of the rocket tank, has high strength and precision requirements in the manufacturing and assembly process. The riveting task of the short shell is more arduous than that of the general cabin body. Therefore, it is necessary to design a device that can quickly and self-adaptively clamp the short shell on the assembly platform and make holes and rivet.

[0003] Patent document CN105234458A discloses a portable adjustable hole making device, which comprises a frame, a drilling device, a lifting mechanism and a limiting roller. The drilling device comprises a bench drill body and a bench drill base, and the bench drill body is fixed on the bench drill base. The lifting mechanism comprises a guide column, a lead screw, a hand wheel, a steel wire rope and a counterweight. The guide column is installed on the frame, the bench drill base is installed on the guide column, the lead screw is installed on the bench drill base, and the hand wheel is connected with the lead screw and can drive the lead screw to lift by rotating. The limiting roller comprises an outer roller, an inner roller, a side roller and a driving hand wheel, and the outer roller, the inner roller and the side roller are installed on the frame, and the driving hand wheel is connected with the outer roller.

[0004] However, the riveting structure of patent document CN105234458A is arranged on the surface of the assembly platform and connected with the assembly platform through the wheel shaft. The riveting structure is heavy, and the high placement of the heavy object is not safe and can damage the assembly platform.

[0005] In order to make the riveting machine not need to be borne by the assembly platform, the riveting machine can be supported by a more simple and reliable structure and can rotate around the assembly platform. Therefore, the present application designs a flexible ring rotary riveting device for short shells with different diameters and a riveting method, which solves the above problems. SUMMARY

[0006] In view of the defects in the prior art, the purpose of the present application is to provide a flexible ring rotary riveting device for short shells with different diameters and a riveting method.

[0007] According to the flexible ring rotary riveting device for short shells with different diameters provided by the present application, the device comprises a rotating frame, a riveting machine module, a pin shaft, an electric drill module and a circumferential clamping wheel. The assembly platform is circularly arranged and placed on the ground, the rotating frame is provided with a pulley at the bottom, and the side close to the assembly platform extends to above the assembly platform. The circumferential clamping wheel is movably connected to the rotating frame near one side of the assembly platform, and the outer edge of the circumferential clamping wheel is abutted and rollingly connected to the outer edge of the assembly platform. The rotating frame and the circumferential clamping wheel are distance-adjustable. The rotating frames are oppositely arranged on both sides of the assembly platform and coaxially rotate. The electric drill module and the riveting machine module are movably connected to different rotating frames.

[0008] Preferably, the top end of the rotating frame extends above the axis of the assembly platform to form a connecting end. Pin holes are vertically arranged in the connecting end of the rotating frame. A pin shaft is arranged through the pin holes of the two opposite rotating frames. The connecting ends of the rotating frames are hingedly connected to each other.

[0009] Preferably, the electric drill module comprises a radial drill and a screw rod module. The drill head of the radial drill is arranged towards the assembly platform and is given in the horizontal direction. The screw rod module drives the radial drill to be movably connected to the rotating frame.

[0010] Preferably, the screw rod module comprises a screw rod, a driving motor and an electric drill support. The electric drill support is vertically and linearly movably connected to the rotating frame. The screw rod is vertically arranged and rotatably connected to the rotating frame and is screwed to the electric drill support. The driving motor is fixed to the rotating frame. The output shaft of the driving motor is coaxially fixed to the screw rod. The radial drill is horizontally arranged on the electric drill support.

[0011] Preferably, the riveting machine module comprises a riveting machine and a riveting air pump. The riveting machine is movably connected to the connecting end of the rotating frame. The riveting air pump is arranged on the same rotating frame as the riveting machine. The riveting air pump is pneumatically connected to the riveting machine to drive the riveting machine to rivet.

[0012] Preferably, a pulley block is arranged on the connecting end of the rotating frame. A rope is wound on the pulley block. The two ends of the rope are connected to the riveting machine and the riveting air pump, respectively. The riveting air pump is movably connected to the rotating frame and is provided with a counterweight. The weight of the counterweight is adjusted to control the lifting of the riveting machine.

[0013] Preferably, the circumferential clamping wheel is rotatably connected to a telescopic frame. The telescopic frame is horizontally movably connected to the rotating frame. The telescopic frame is fixed with a spring connected to the rotating frame. The spring drives the circumferential clamping wheel on the telescopic frame to be close to the assembly platform.

[0014] Preferably, a driving structure is arranged on the circumferential clamping wheel. The driving structure comprises a handle connected to the circumferential clamping wheel. The handle is shaken to drive the circumferential clamping wheel to rotate.

[0015] Preferably, the assembly platform is uniformly and circumferentially provided with clamping jaws. The clamping jaws clamp and position the short shell of the rocket cabin section.

[0016] According to the riveting method of the flexible ring riveting device for different diameter short shells provided by the present application, the flexible ring riveting device for different diameter short shells is adopted. The method comprises the following steps: Step S1: the rocket cabin section short shell is fixed by a crane on the assembly platform; Step S2: the rotating frame is installed on the assembly platform, and the circumferential clamping wheel is close to and pressed on the assembly platform; the appropriate pin hole is selected, and the two rotating frames are connected by using the pin shaft; Step S3: the riveting machine module and the electric drill module are respectively installed on the rotating frame, the counterweight on the riveting air pump is adjusted, the riveting machine is controlled to move up and down, the lead screw module is adjusted, and the radial arm electric drill is controlled to move up and down; Step S4: the handle is rotated to drive the circumferential clamping wheel to rotate and drive the rotating frame to rotate around the center of the assembly platform; Step S5: the operator moves the rotating frame while performing the hole drilling and riveting work of the cabin section.

[0017] Compared with the prior art, the present application has the following beneficial effects: 1. Self-adapting rotation around the assembly platform. In the traditional rotating device, the device needs to be aligned with the two sides of the assembly platform disc by the crane, and the two clamping wheels are clamped on the two sides of the assembly platform. The high placement of the weight is not safe, and it will also cause damage to the assembly platform. The weight of the innovative mechanism does not need to be borne by the assembly platform, and the circumferential clamping wheel can be tightly attached to the platform for rotation by the spring force.

[0018] 2. Reducing the weight of the riveting machine. By installing a counterweight on the air pump, the weight of the riveting machine is similar to that of the counterweight, which reduces the weight burden of the operator holding the riveting machine, and makes the operator better position the riveting position.

[0019] 3. Adapt to different short shell diameters. The diameters of various types of rocket cabin sections are different. For different diameters, different position pin holes on the rotating frame can be selected to cover riveting of short shells of various diameters.

[0020] 4. Designing the lead screw module. The radial arm electric drill is placed on the lead screw module, and the height of the motor can be adjusted by the lead screw to complete the riveting and hole drilling requirements of different positions of the short shell end frame. The accuracy of the axial hole drilling position can be ensured.

[0021] 5. Ensuring that the hole drilling and riveting are synchronized. The two side frame vehicles can work simultaneously, and the riveting machine is lifted by the steel rope. When the hole drilling and riveting are not synchronized, the riveting can also be adjusted in time. BRIEF DESCRIPTION OF DRAWINGS

[0022] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the accompanying drawings: Figure 1 The figure is a structural schematic diagram of the present application.

[0023] The figure shows: 1, rotating frame; 2, radial arm electric drill; 3, lead screw module; 4, pin shaft; 5, riveting machine; 6, riveting air pump; 7, circumferential clamping wheel. DETAILED DESCRIPTION

[0024] The application will be described in detail below with specific examples. The following examples will help those skilled in the art to further understand the application, but do not limit the application in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the application. These are within the scope of protection of the application.

[0025] As shown in the drawings, a flexible ring riveting device with different diameter short shells includes a rotating frame 1, a riveting machine module, a pin shaft 4, a drill module and a circumferential clamping wheel 7. Figure 1

[0026] The assembly platform is circularly arranged and placed on the ground. The rotating frame 1 is provided with a pulley at the bottom and extends above the assembly platform near one side of the assembly platform.

[0027] The circumferential clamping wheel 7 is movably connected to the rotating frame 1 near the assembly platform. The outer edge of the circumferential clamping wheel 7 abuts and rolls on the outer edge of the assembly platform. The distance between the rotating frame 1 and the circumferential clamping wheel 7 is adjustable. The rotating frames 1 are arranged opposite to each other on both sides of the assembly platform and rotate coaxially.

[0028] The drill module and the riveting machine module are movably connected to different rotating frames 1.

[0029] The working principle of the application is that the weight of the riveting machine does not need to be borne by the assembly platform. The rotating frame 1 can be closely attached to the platform for rotation. Multiple rotating frames 1 can also ensure that the hole drilling and riveting are performed synchronously. The structure is compact and reliable, which guarantees the assembly work of the rocket short shell.

[0030] Specifically, the rotating frame 1 extends to the top of the assembly platform to form a connecting end. The connecting end of the rotating frame 1 is provided with a pin hole vertically and spaced apart. The pin shaft 4 penetrates the pin holes of the two opposite rotating frames 1. The connecting ends of the rotating frames 1 are hingedly connected to each other, thereby adapting to more models of rocket cabin short shells.

[0031] The drill module includes a radial drill 2 and a lead screw module 3. The lead screw module 3 includes a lead screw, a driving motor and a drill support. The drill support is vertically and linearly slidably connected to the rotating frame 1. The lead screw is vertically arranged and rotatably connected to the rotating frame 1 and is screwed to the drill support. The driving motor is fixed to the rotating frame 1. The output shaft of the driving motor is coaxially fixed to the lead screw. The radial drill 2 is horizontally placed on the drill support with the drill bit facing the assembly platform and feeding in the horizontal direction.

[0032] ​The press riveter module comprises the press riveter 5 and the press riveting air pump 6, the press riveter 5 is connected to the connecting end of the rotating frame 1, the press riveting air pump 6 is arranged on the same rotating frame 1 with the press riveter 5, the press riveting air pump 6 is pneumatically connected to the press riveter 5, and the press riveter 5 is driven to press rivet.

[0033] In one embodiment, the connecting end of the rotating frame 1 is provided with a pulley block, a rope is arranged around the pulley block, the two ends of the rope are connected to the press riveter 5 and the press riveting air pump 6 respectively, the press riveting air pump 6 is connected to the rotating frame 1 in a lifting manner and is provided with a counterweight, and the weight of the counterweight is adjusted to control the lifting of the press riveter 5.

[0034] Preferably, the circumferential clamping wheels 7 are respectively rotationally connected to the telescopic frames, and the telescopic frames are respectively horizontally slidably connected to the two rotating frames 1. The telescopic frames are fixed with springs connected to the rotating frames 1, and the springs drive the circumferential clamping wheels 7 on the telescopic frames to approach the assembly platform.

[0035] In one embodiment, the circumferential clamping wheels 7 are provided with driving structures, and the driving structures comprise handles connected to the circumferential clamping wheels 7, and shaking the handles drives the circumferential clamping wheels 7 to rotate.

[0036] In one embodiment, the assembly platform is uniformly and circumferentially provided with clamping jaws, and the clamping jaws clamp and position the rocket cabin section shells.

[0037] The embodiment also provides a riveting method of the flexible ring rotary riveting device for short shells with different diameters, and the method comprises the following steps: Step S1: The rocket cabin section shells are clamped and fixed on the assembly platform by a crane.

[0038] Step S2: The rotating frames 1 are installed on the assembly platform, and the circumferential clamping wheels 7 are close to and pressed against the assembly platform. Suitable pin holes are selected, and the two rotating frames 1 are connected by using the pin shafts 4.

[0039] Step S3: The press riveter module and the electric drill module are respectively installed on the rotating frames 1, the counterweight on the press riveting air pump 6 is adjusted, the press riveter 5 is controlled to move up and down, the lead screw module 3 is adjusted, and the radial drill 2 is controlled to move up and down.

[0040] Step S4: The handle is rotated to drive the circumferential clamping wheels 7 to rotate and drive the rotating frames 1 to rotate around the center of the assembly platform.

[0041] Step S5: The operator moves the rotating frames 1 while performing the hole drilling and press riveting work of the cabin section.

[0042] The application has the advantages of compact structure, reliability and improved processing efficiency of the short shell of the storage tank.

[0043] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0044] The specific embodiments of the present application are described above. It should be understood that the present application is not limited to the specific embodiments described above, and various changes or modifications can be made by those skilled in the art within the scope of the claims, which does not affect the essential content of the present application. The embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other without conflict.

Claims

1. A flexible ring-shaped riveting device for short shells of different diameters, characterized in that, include: Rotating frame (1), riveting machine module, pin shaft (4), electric drill module and circumferential clamping wheel (7); The assembly platform is circular and placed on the ground. The bottom of the rotating frame (1) is equipped with pulleys and extends to the top of the assembly platform from the side closest to the assembly platform. The circumferential clamping wheel (7) is movably connected to the side of the rotating frame (1) near the assembly platform. The outer edge of the circumferential clamping wheel (7) abuts against and rolls to the outer edge of the assembly platform. The distance between the rotating frame (1) and the circumferential clamping wheel (7) is adjustable. The rotating frame (1) is located on both sides of the assembly platform and rotates coaxially. The electric drill module and the riveting machine module are connected to different rotating frames (1) for lifting.

2. The flexible ring riveting device for short shells of different diameters according to claim 1, characterized in that, The top of the rotating frame (1) extends to the center of the assembly platform to form a connecting end. The connecting end of the rotating frame (1) has vertically spaced pin holes. The pin shaft (4) passes through the pin holes of two opposite rotating frames (1). The connecting ends of the rotating frames (1) are hinged to each other.

3. The flexible ring riveting device for short shells of different diameters according to claim 2, characterized in that, The electric drill module includes a radial arm drill (2) and a lead screw module (3). The drill bit of the radial arm drill (2) is set facing the assembly platform and feeds in the horizontal direction. The lead screw module (3) drives the radial arm drill (2) to lift and connect to the rotating frame (1).

4. The flexible ring riveting device for short shells of different diameters according to claim 3, characterized in that, The lead screw module (3) includes a lead screw, a drive motor and a drill bracket. The drill bracket is vertically slidably connected to the rotating frame (1) along a straight line. The lead screw is vertically rotatably connected to the rotating frame (1) and screwed to the drill bracket. The drive motor is fixed to the rotating frame (1), and the output shaft of the drive motor is coaxially fixed to the lead screw. The rocker arm drill (2) is horizontally placed on the drill bracket.

5. The flexible ring riveting device for short shells of different diameters according to claim 4, characterized in that, The riveting machine module includes a riveting machine (5) and a riveting air pump (6). The riveting machine (5) is connected to the connecting end of the rotating frame (1) in a lifting manner. The riveting air pump (6) is set on the same rotating frame (1) as the riveting machine (5). The riveting air pump (6) is pneumatically connected to the riveting machine (5) and drives the riveting machine (5) to rivet.

6. The flexible ring riveting device for short shells of different diameters according to claim 5, characterized in that, The rotating frame (1) is equipped with a pulley block at the connecting end, and a rope is wound around the pulley block. The two ends of the rope are connected to the riveting machine (5) and the riveting air pump (6) respectively. The riveting air pump (6) is connected to the rotating frame (1) for lifting and lowering and is equipped with a counterweight. Adjusting the weight of the counterweight controls the lifting and lowering of the riveting machine (5).

7. The flexible ring riveting device for short shells of different diameters according to claim 6, characterized in that, The circumferential clamping wheel (7) is rotatably connected to the telescopic frame, and the telescopic frame is horizontally slidably connected to the rotating frame (1); the telescopic frame is fixed with a spring connected to the rotating frame (1), and the spring drives the circumferential clamping wheel (7) on the telescopic frame to approach the assembly platform.

8. The flexible ring riveting device for short shells of different diameters according to claim 7, characterized in that, The circumferential clamping wheel (7) is provided with a driving structure, which includes a handle connected to the circumferential clamping wheel (7). The circumferential clamping wheel (7) is driven to rotate by shaking the handle.

9. The flexible ring riveting device for short shells of different diameters according to claim 8, characterized in that, The assembly platform is provided with grippers at even intervals along the circumference, which grip and position the short shell of the rocket section.

10. A riveting method for a flexible ring-shaped riveting device for short shells of different diameters, employing the flexible ring-shaped riveting device for short shells of different diameters as claimed in any one of claims 1-9, characterized in that the steps... include: Step S1: Secure the short shell of the rocket section to the assembly platform using a crane; Step S2: Install the rotating frame (1) on the assembly platform, and press the circumferential clamping wheel (7) close to and press it against the assembly platform; select a suitable pin hole and use the pin shaft (4) to connect the two rotating frames (1); Step S3: Install the riveting machine module and the electric drill module on the rotating frame (1) respectively, adjust the counterweight on the riveting air pump (6), control the riveting machine (5) to move up and down, adjust the screw module (3), and control the rocker arm electric drill (2) to move up and down; Step S4: Rotate the handle to drive the circumferential clamping wheel (7) to rotate the rotating frame (1) around the center of the assembly platform; Step S5: The operator moves the rotating frame (1) while performing hole making and riveting work on the compartment.

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